jaroslav@49: /*
jaroslav@49:  * Copyright (c) 1994, 2010, Oracle and/or its affiliates. All rights reserved.
jaroslav@49:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jaroslav@49:  *
jaroslav@49:  * This code is free software; you can redistribute it and/or modify it
jaroslav@49:  * under the terms of the GNU General Public License version 2 only, as
jaroslav@49:  * published by the Free Software Foundation.  Oracle designates this
jaroslav@49:  * particular file as subject to the "Classpath" exception as provided
jaroslav@49:  * by Oracle in the LICENSE file that accompanied this code.
jaroslav@49:  *
jaroslav@49:  * This code is distributed in the hope that it will be useful, but WITHOUT
jaroslav@49:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jaroslav@49:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jaroslav@49:  * version 2 for more details (a copy is included in the LICENSE file that
jaroslav@49:  * accompanied this code).
jaroslav@49:  *
jaroslav@49:  * You should have received a copy of the GNU General Public License version
jaroslav@49:  * 2 along with this work; if not, write to the Free Software Foundation,
jaroslav@49:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jaroslav@49:  *
jaroslav@49:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
jaroslav@49:  * or visit www.oracle.com if you need additional information or have any
jaroslav@49:  * questions.
jaroslav@49:  */
jaroslav@49: 
jaroslav@49: package java.lang;
jaroslav@49: 
jaroslav@240: import java.util.Comparator;
jaroslav@93: import org.apidesign.bck2brwsr.core.ExtraJavaScript;
jaroslav@240: import org.apidesign.bck2brwsr.core.JavaScriptBody;
jaroslav@240: import org.apidesign.bck2brwsr.core.JavaScriptOnly;
jaroslav@240: import org.apidesign.bck2brwsr.core.JavaScriptPrototype;
jaroslav@49: 
jaroslav@49: /**
jaroslav@49:  * The <code>String</code> class represents character strings. All
jaroslav@49:  * string literals in Java programs, such as <code>"abc"</code>, are
jaroslav@49:  * implemented as instances of this class.
jaroslav@49:  * <p>
jaroslav@49:  * Strings are constant; their values cannot be changed after they
jaroslav@49:  * are created. String buffers support mutable strings.
jaroslav@49:  * Because String objects are immutable they can be shared. For example:
jaroslav@49:  * <p><blockquote><pre>
jaroslav@49:  *     String str = "abc";
jaroslav@49:  * </pre></blockquote><p>
jaroslav@49:  * is equivalent to:
jaroslav@49:  * <p><blockquote><pre>
jaroslav@49:  *     char data[] = {'a', 'b', 'c'};
jaroslav@49:  *     String str = new String(data);
jaroslav@49:  * </pre></blockquote><p>
jaroslav@49:  * Here are some more examples of how strings can be used:
jaroslav@49:  * <p><blockquote><pre>
jaroslav@49:  *     System.out.println("abc");
jaroslav@49:  *     String cde = "cde";
jaroslav@49:  *     System.out.println("abc" + cde);
jaroslav@49:  *     String c = "abc".substring(2,3);
jaroslav@49:  *     String d = cde.substring(1, 2);
jaroslav@49:  * </pre></blockquote>
jaroslav@49:  * <p>
jaroslav@49:  * The class <code>String</code> includes methods for examining
jaroslav@49:  * individual characters of the sequence, for comparing strings, for
jaroslav@49:  * searching strings, for extracting substrings, and for creating a
jaroslav@49:  * copy of a string with all characters translated to uppercase or to
jaroslav@49:  * lowercase. Case mapping is based on the Unicode Standard version
jaroslav@49:  * specified by the {@link java.lang.Character Character} class.
jaroslav@49:  * <p>
jaroslav@49:  * The Java language provides special support for the string
jaroslav@49:  * concatenation operator (&nbsp;+&nbsp;), and for conversion of
jaroslav@49:  * other objects to strings. String concatenation is implemented
jaroslav@49:  * through the <code>StringBuilder</code>(or <code>StringBuffer</code>)
jaroslav@49:  * class and its <code>append</code> method.
jaroslav@49:  * String conversions are implemented through the method
jaroslav@49:  * <code>toString</code>, defined by <code>Object</code> and
jaroslav@49:  * inherited by all classes in Java. For additional information on
jaroslav@49:  * string concatenation and conversion, see Gosling, Joy, and Steele,
jaroslav@49:  * <i>The Java Language Specification</i>.
jaroslav@49:  *
jaroslav@49:  * <p> Unless otherwise noted, passing a <tt>null</tt> argument to a constructor
jaroslav@49:  * or method in this class will cause a {@link NullPointerException} to be
jaroslav@49:  * thrown.
jaroslav@49:  *
jaroslav@49:  * <p>A <code>String</code> represents a string in the UTF-16 format
jaroslav@49:  * in which <em>supplementary characters</em> are represented by <em>surrogate
jaroslav@49:  * pairs</em> (see the section <a href="Character.html#unicode">Unicode
jaroslav@49:  * Character Representations</a> in the <code>Character</code> class for
jaroslav@49:  * more information).
jaroslav@49:  * Index values refer to <code>char</code> code units, so a supplementary
jaroslav@49:  * character uses two positions in a <code>String</code>.
jaroslav@49:  * <p>The <code>String</code> class provides methods for dealing with
jaroslav@49:  * Unicode code points (i.e., characters), in addition to those for
jaroslav@49:  * dealing with Unicode code units (i.e., <code>char</code> values).
jaroslav@49:  *
jaroslav@49:  * @author  Lee Boynton
jaroslav@49:  * @author  Arthur van Hoff
jaroslav@49:  * @author  Martin Buchholz
jaroslav@49:  * @author  Ulf Zibis
jaroslav@49:  * @see     java.lang.Object#toString()
jaroslav@49:  * @see     java.lang.StringBuffer
jaroslav@49:  * @see     java.lang.StringBuilder
jaroslav@49:  * @see     java.nio.charset.Charset
jaroslav@49:  * @since   JDK1.0
jaroslav@49:  */
jaroslav@49: 
jaroslav@93: @ExtraJavaScript(
jaroslav@93:     resource="/org/apidesign/vm4brwsr/emul/java_lang_String.js",
jaroslav@240:     processByteCode=true
jaroslav@93: )
jaroslav@240: @JavaScriptPrototype(container = "String.prototype", prototype = "new String")
jaroslav@49: public final class String
jaroslav@49:     implements java.io.Serializable, Comparable<String>, CharSequence
jaroslav@49: {
jaroslav@240:     @JavaScriptOnly
jaroslav@49:     /** Cache the hash code for the string */
jaroslav@49:     private int hash; // Default to 0
jaroslav@240:     
jaroslav@240:     /** real string to delegate to */
jaroslav@240:     private Object r;
jaroslav@49: 
jaroslav@49:     /** use serialVersionUID from JDK 1.0.2 for interoperability */
jaroslav@49:     private static final long serialVersionUID = -6849794470754667710L;
jaroslav@240:     
jaroslav@240:     @JavaScriptOnly(name="toString", value="function() { return this.fld_r; }")
jaroslav@240:     private static void jsToString() {
jaroslav@240:     }
jaroslav@240:     
jaroslav@240:     @JavaScriptOnly(name="valueOf", value="function() { return this.toString().valueOf(); }")
jaroslav@240:     private static void jsValudOf() {
jaroslav@240:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Class String is special cased within the Serialization Stream Protocol.
jaroslav@49:      *
jaroslav@49:      * A String instance is written initially into an ObjectOutputStream in the
jaroslav@49:      * following format:
jaroslav@49:      * <pre>
jaroslav@49:      *      <code>TC_STRING</code> (utf String)
jaroslav@49:      * </pre>
jaroslav@49:      * The String is written by method <code>DataOutput.writeUTF</code>.
jaroslav@49:      * A new handle is generated to  refer to all future references to the
jaroslav@49:      * string instance within the stream.
jaroslav@49:      */
jaroslav@65: //    private static final ObjectStreamField[] serialPersistentFields =
jaroslav@65: //        new ObjectStreamField[0];
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Initializes a newly created {@code String} object so that it represents
jaroslav@49:      * an empty character sequence.  Note that use of this constructor is
jaroslav@49:      * unnecessary since Strings are immutable.
jaroslav@49:      */
jaroslav@49:     public String() {
jaroslav@241:         this.r = "";
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Initializes a newly created {@code String} object so that it represents
jaroslav@49:      * the same sequence of characters as the argument; in other words, the
jaroslav@49:      * newly created string is a copy of the argument string. Unless an
jaroslav@49:      * explicit copy of {@code original} is needed, use of this constructor is
jaroslav@49:      * unnecessary since Strings are immutable.
jaroslav@49:      *
jaroslav@49:      * @param  original
jaroslav@49:      *         A {@code String}
jaroslav@49:      */
jaroslav@49:     public String(String original) {
jaroslav@241:         this.r = original.toString();
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Allocates a new {@code String} so that it represents the sequence of
jaroslav@49:      * characters currently contained in the character array argument. The
jaroslav@49:      * contents of the character array are copied; subsequent modification of
jaroslav@49:      * the character array does not affect the newly created string.
jaroslav@49:      *
jaroslav@49:      * @param  value
jaroslav@49:      *         The initial value of the string
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = { "self", "charArr" }, body=
jaroslav@240:         "for (var i = 0; i < charArr.length; i++) {\n"
jaroslav@240:       + "  if (typeof charArr[i] === 'number') charArr[i] = String.fromCharCode(charArr[i]);\n"
jaroslav@240:       + "}\n"
jaroslav@240:       + "self.fld_r = charArr.join('');\n"
jaroslav@240:     )
jaroslav@49:     public String(char value[]) {
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Allocates a new {@code String} that contains characters from a subarray
jaroslav@49:      * of the character array argument. The {@code offset} argument is the
jaroslav@49:      * index of the first character of the subarray and the {@code count}
jaroslav@49:      * argument specifies the length of the subarray. The contents of the
jaroslav@49:      * subarray are copied; subsequent modification of the character array does
jaroslav@49:      * not affect the newly created string.
jaroslav@49:      *
jaroslav@49:      * @param  value
jaroslav@49:      *         Array that is the source of characters
jaroslav@49:      *
jaroslav@49:      * @param  offset
jaroslav@49:      *         The initial offset
jaroslav@49:      *
jaroslav@49:      * @param  count
jaroslav@49:      *         The length
jaroslav@49:      *
jaroslav@49:      * @throws  IndexOutOfBoundsException
jaroslav@49:      *          If the {@code offset} and {@code count} arguments index
jaroslav@49:      *          characters outside the bounds of the {@code value} array
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = { "self", "charArr", "off", "cnt" }, body =
jaroslav@240:         "var up = off + cnt;\n" +
jaroslav@240:         "for (var i = off; i < up; i++) {\n" +
jaroslav@240:         "  if (typeof charArr[i] === 'number') charArr[i] = String.fromCharCode(charArr[i]);\n" +
jaroslav@240:         "}\n" +
jaroslav@240:         "self.fld_r = charArr.slice(off, up).join(\"\");\n"
jaroslav@240:     )
jaroslav@49:     public String(char value[], int offset, int count) {
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Allocates a new {@code String} that contains characters from a subarray
jaroslav@49:      * of the <a href="Character.html#unicode">Unicode code point</a> array
jaroslav@49:      * argument.  The {@code offset} argument is the index of the first code
jaroslav@49:      * point of the subarray and the {@code count} argument specifies the
jaroslav@49:      * length of the subarray.  The contents of the subarray are converted to
jaroslav@49:      * {@code char}s; subsequent modification of the {@code int} array does not
jaroslav@49:      * affect the newly created string.
jaroslav@49:      *
jaroslav@49:      * @param  codePoints
jaroslav@49:      *         Array that is the source of Unicode code points
jaroslav@49:      *
jaroslav@49:      * @param  offset
jaroslav@49:      *         The initial offset
jaroslav@49:      *
jaroslav@49:      * @param  count
jaroslav@49:      *         The length
jaroslav@49:      *
jaroslav@49:      * @throws  IllegalArgumentException
jaroslav@49:      *          If any invalid Unicode code point is found in {@code
jaroslav@49:      *          codePoints}
jaroslav@49:      *
jaroslav@49:      * @throws  IndexOutOfBoundsException
jaroslav@49:      *          If the {@code offset} and {@code count} arguments index
jaroslav@49:      *          characters outside the bounds of the {@code codePoints} array
jaroslav@49:      *
jaroslav@49:      * @since  1.5
jaroslav@49:      */
jaroslav@49:     public String(int[] codePoints, int offset, int count) {
jaroslav@49:         if (offset < 0) {
jaroslav@49:             throw new StringIndexOutOfBoundsException(offset);
jaroslav@49:         }
jaroslav@49:         if (count < 0) {
jaroslav@49:             throw new StringIndexOutOfBoundsException(count);
jaroslav@49:         }
jaroslav@49:         // Note: offset or count might be near -1>>>1.
jaroslav@49:         if (offset > codePoints.length - count) {
jaroslav@49:             throw new StringIndexOutOfBoundsException(offset + count);
jaroslav@49:         }
jaroslav@49: 
jaroslav@49:         final int end = offset + count;
jaroslav@49: 
jaroslav@49:         // Pass 1: Compute precise size of char[]
jaroslav@49:         int n = count;
jaroslav@49:         for (int i = offset; i < end; i++) {
jaroslav@49:             int c = codePoints[i];
jaroslav@49:             if (Character.isBmpCodePoint(c))
jaroslav@49:                 continue;
jaroslav@49:             else if (Character.isValidCodePoint(c))
jaroslav@49:                 n++;
jaroslav@49:             else throw new IllegalArgumentException(Integer.toString(c));
jaroslav@49:         }
jaroslav@49: 
jaroslav@49:         // Pass 2: Allocate and fill in char[]
jaroslav@49:         final char[] v = new char[n];
jaroslav@49: 
jaroslav@49:         for (int i = offset, j = 0; i < end; i++, j++) {
jaroslav@49:             int c = codePoints[i];
jaroslav@49:             if (Character.isBmpCodePoint(c))
jaroslav@49:                 v[j] = (char) c;
jaroslav@49:             else
jaroslav@49:                 Character.toSurrogates(c, v, j++);
jaroslav@49:         }
jaroslav@49: 
jaroslav@241:         this.r = new String(v, 0, n);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Allocates a new {@code String} constructed from a subarray of an array
jaroslav@49:      * of 8-bit integer values.
jaroslav@49:      *
jaroslav@49:      * <p> The {@code offset} argument is the index of the first byte of the
jaroslav@49:      * subarray, and the {@code count} argument specifies the length of the
jaroslav@49:      * subarray.
jaroslav@49:      *
jaroslav@49:      * <p> Each {@code byte} in the subarray is converted to a {@code char} as
jaroslav@49:      * specified in the method above.
jaroslav@49:      *
jaroslav@49:      * @deprecated This method does not properly convert bytes into characters.
jaroslav@49:      * As of JDK&nbsp;1.1, the preferred way to do this is via the
jaroslav@49:      * {@code String} constructors that take a {@link
jaroslav@49:      * java.nio.charset.Charset}, charset name, or that use the platform's
jaroslav@49:      * default charset.
jaroslav@49:      *
jaroslav@49:      * @param  ascii
jaroslav@49:      *         The bytes to be converted to characters
jaroslav@49:      *
jaroslav@49:      * @param  hibyte
jaroslav@49:      *         The top 8 bits of each 16-bit Unicode code unit
jaroslav@49:      *
jaroslav@49:      * @param  offset
jaroslav@49:      *         The initial offset
jaroslav@49:      * @param  count
jaroslav@49:      *         The length
jaroslav@49:      *
jaroslav@49:      * @throws  IndexOutOfBoundsException
jaroslav@49:      *          If the {@code offset} or {@code count} argument is invalid
jaroslav@49:      *
jaroslav@49:      * @see  #String(byte[], int)
jaroslav@49:      * @see  #String(byte[], int, int, java.lang.String)
jaroslav@49:      * @see  #String(byte[], int, int, java.nio.charset.Charset)
jaroslav@49:      * @see  #String(byte[], int, int)
jaroslav@49:      * @see  #String(byte[], java.lang.String)
jaroslav@49:      * @see  #String(byte[], java.nio.charset.Charset)
jaroslav@49:      * @see  #String(byte[])
jaroslav@49:      */
jaroslav@49:     @Deprecated
jaroslav@49:     public String(byte ascii[], int hibyte, int offset, int count) {
jaroslav@49:         checkBounds(ascii, offset, count);
jaroslav@49:         char value[] = new char[count];
jaroslav@49: 
jaroslav@49:         if (hibyte == 0) {
jaroslav@49:             for (int i = count ; i-- > 0 ;) {
jaroslav@49:                 value[i] = (char) (ascii[i + offset] & 0xff);
jaroslav@49:             }
jaroslav@49:         } else {
jaroslav@49:             hibyte <<= 8;
jaroslav@49:             for (int i = count ; i-- > 0 ;) {
jaroslav@49:                 value[i] = (char) (hibyte | (ascii[i + offset] & 0xff));
jaroslav@49:             }
jaroslav@49:         }
jaroslav@241:         this.r = new String(value, 0, count);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Allocates a new {@code String} containing characters constructed from
jaroslav@49:      * an array of 8-bit integer values. Each character <i>c</i>in the
jaroslav@49:      * resulting string is constructed from the corresponding component
jaroslav@49:      * <i>b</i> in the byte array such that:
jaroslav@49:      *
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      *     <b><i>c</i></b> == (char)(((hibyte &amp; 0xff) &lt;&lt; 8)
jaroslav@49:      *                         | (<b><i>b</i></b> &amp; 0xff))
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      *
jaroslav@49:      * @deprecated  This method does not properly convert bytes into
jaroslav@49:      * characters.  As of JDK&nbsp;1.1, the preferred way to do this is via the
jaroslav@49:      * {@code String} constructors that take a {@link
jaroslav@49:      * java.nio.charset.Charset}, charset name, or that use the platform's
jaroslav@49:      * default charset.
jaroslav@49:      *
jaroslav@49:      * @param  ascii
jaroslav@49:      *         The bytes to be converted to characters
jaroslav@49:      *
jaroslav@49:      * @param  hibyte
jaroslav@49:      *         The top 8 bits of each 16-bit Unicode code unit
jaroslav@49:      *
jaroslav@49:      * @see  #String(byte[], int, int, java.lang.String)
jaroslav@49:      * @see  #String(byte[], int, int, java.nio.charset.Charset)
jaroslav@49:      * @see  #String(byte[], int, int)
jaroslav@49:      * @see  #String(byte[], java.lang.String)
jaroslav@49:      * @see  #String(byte[], java.nio.charset.Charset)
jaroslav@49:      * @see  #String(byte[])
jaroslav@49:      */
jaroslav@49:     @Deprecated
jaroslav@49:     public String(byte ascii[], int hibyte) {
jaroslav@49:         this(ascii, hibyte, 0, ascii.length);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /* Common private utility method used to bounds check the byte array
jaroslav@49:      * and requested offset & length values used by the String(byte[],..)
jaroslav@49:      * constructors.
jaroslav@49:      */
jaroslav@49:     private static void checkBounds(byte[] bytes, int offset, int length) {
jaroslav@49:         if (length < 0)
jaroslav@49:             throw new StringIndexOutOfBoundsException(length);
jaroslav@49:         if (offset < 0)
jaroslav@49:             throw new StringIndexOutOfBoundsException(offset);
jaroslav@49:         if (offset > bytes.length - length)
jaroslav@49:             throw new StringIndexOutOfBoundsException(offset + length);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Constructs a new {@code String} by decoding the specified subarray of
jaroslav@49:      * bytes using the specified charset.  The length of the new {@code String}
jaroslav@49:      * is a function of the charset, and hence may not be equal to the length
jaroslav@49:      * of the subarray.
jaroslav@49:      *
jaroslav@49:      * <p> The behavior of this constructor when the given bytes are not valid
jaroslav@49:      * in the given charset is unspecified.  The {@link
jaroslav@49:      * java.nio.charset.CharsetDecoder} class should be used when more control
jaroslav@49:      * over the decoding process is required.
jaroslav@49:      *
jaroslav@49:      * @param  bytes
jaroslav@49:      *         The bytes to be decoded into characters
jaroslav@49:      *
jaroslav@49:      * @param  offset
jaroslav@49:      *         The index of the first byte to decode
jaroslav@49:      *
jaroslav@49:      * @param  length
jaroslav@49:      *         The number of bytes to decode
jaroslav@49: 
jaroslav@49:      * @param  charsetName
jaroslav@49:      *         The name of a supported {@linkplain java.nio.charset.Charset
jaroslav@49:      *         charset}
jaroslav@49:      *
jaroslav@49:      * @throws  UnsupportedEncodingException
jaroslav@49:      *          If the named charset is not supported
jaroslav@49:      *
jaroslav@49:      * @throws  IndexOutOfBoundsException
jaroslav@49:      *          If the {@code offset} and {@code length} arguments index
jaroslav@49:      *          characters outside the bounds of the {@code bytes} array
jaroslav@49:      *
jaroslav@49:      * @since  JDK1.1
jaroslav@49:      */
jaroslav@74: //    public String(byte bytes[], int offset, int length, String charsetName)
jaroslav@74: //        throws UnsupportedEncodingException
jaroslav@74: //    {
jaroslav@74: //        if (charsetName == null)
jaroslav@74: //            throw new NullPointerException("charsetName");
jaroslav@74: //        checkBounds(bytes, offset, length);
jaroslav@74: //        char[] v = StringCoding.decode(charsetName, bytes, offset, length);
jaroslav@74: //        this.offset = 0;
jaroslav@74: //        this.count = v.length;
jaroslav@74: //        this.value = v;
jaroslav@74: //    }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Constructs a new {@code String} by decoding the specified subarray of
jaroslav@49:      * bytes using the specified {@linkplain java.nio.charset.Charset charset}.
jaroslav@49:      * The length of the new {@code String} is a function of the charset, and
jaroslav@49:      * hence may not be equal to the length of the subarray.
jaroslav@49:      *
jaroslav@49:      * <p> This method always replaces malformed-input and unmappable-character
jaroslav@49:      * sequences with this charset's default replacement string.  The {@link
jaroslav@49:      * java.nio.charset.CharsetDecoder} class should be used when more control
jaroslav@49:      * over the decoding process is required.
jaroslav@49:      *
jaroslav@49:      * @param  bytes
jaroslav@49:      *         The bytes to be decoded into characters
jaroslav@49:      *
jaroslav@49:      * @param  offset
jaroslav@49:      *         The index of the first byte to decode
jaroslav@49:      *
jaroslav@49:      * @param  length
jaroslav@49:      *         The number of bytes to decode
jaroslav@49:      *
jaroslav@49:      * @param  charset
jaroslav@49:      *         The {@linkplain java.nio.charset.Charset charset} to be used to
jaroslav@49:      *         decode the {@code bytes}
jaroslav@49:      *
jaroslav@49:      * @throws  IndexOutOfBoundsException
jaroslav@49:      *          If the {@code offset} and {@code length} arguments index
jaroslav@49:      *          characters outside the bounds of the {@code bytes} array
jaroslav@49:      *
jaroslav@49:      * @since  1.6
jaroslav@49:      */
jaroslav@61:     /* don't want dependnecy on Charset
jaroslav@49:     public String(byte bytes[], int offset, int length, Charset charset) {
jaroslav@49:         if (charset == null)
jaroslav@49:             throw new NullPointerException("charset");
jaroslav@49:         checkBounds(bytes, offset, length);
jaroslav@49:         char[] v = StringCoding.decode(charset, bytes, offset, length);
jaroslav@49:         this.offset = 0;
jaroslav@49:         this.count = v.length;
jaroslav@49:         this.value = v;
jaroslav@49:     }
jaroslav@61:     */
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Constructs a new {@code String} by decoding the specified array of bytes
jaroslav@49:      * using the specified {@linkplain java.nio.charset.Charset charset}.  The
jaroslav@49:      * length of the new {@code String} is a function of the charset, and hence
jaroslav@49:      * may not be equal to the length of the byte array.
jaroslav@49:      *
jaroslav@49:      * <p> The behavior of this constructor when the given bytes are not valid
jaroslav@49:      * in the given charset is unspecified.  The {@link
jaroslav@49:      * java.nio.charset.CharsetDecoder} class should be used when more control
jaroslav@49:      * over the decoding process is required.
jaroslav@49:      *
jaroslav@49:      * @param  bytes
jaroslav@49:      *         The bytes to be decoded into characters
jaroslav@49:      *
jaroslav@49:      * @param  charsetName
jaroslav@49:      *         The name of a supported {@linkplain java.nio.charset.Charset
jaroslav@49:      *         charset}
jaroslav@49:      *
jaroslav@49:      * @throws  UnsupportedEncodingException
jaroslav@49:      *          If the named charset is not supported
jaroslav@49:      *
jaroslav@49:      * @since  JDK1.1
jaroslav@49:      */
jaroslav@74: //    public String(byte bytes[], String charsetName)
jaroslav@74: //        throws UnsupportedEncodingException
jaroslav@74: //    {
jaroslav@74: //        this(bytes, 0, bytes.length, charsetName);
jaroslav@74: //    }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Constructs a new {@code String} by decoding the specified array of
jaroslav@49:      * bytes using the specified {@linkplain java.nio.charset.Charset charset}.
jaroslav@49:      * The length of the new {@code String} is a function of the charset, and
jaroslav@49:      * hence may not be equal to the length of the byte array.
jaroslav@49:      *
jaroslav@49:      * <p> This method always replaces malformed-input and unmappable-character
jaroslav@49:      * sequences with this charset's default replacement string.  The {@link
jaroslav@49:      * java.nio.charset.CharsetDecoder} class should be used when more control
jaroslav@49:      * over the decoding process is required.
jaroslav@49:      *
jaroslav@49:      * @param  bytes
jaroslav@49:      *         The bytes to be decoded into characters
jaroslav@49:      *
jaroslav@49:      * @param  charset
jaroslav@49:      *         The {@linkplain java.nio.charset.Charset charset} to be used to
jaroslav@49:      *         decode the {@code bytes}
jaroslav@49:      *
jaroslav@49:      * @since  1.6
jaroslav@49:      */
jaroslav@61:     /* don't want dep on Charset
jaroslav@49:     public String(byte bytes[], Charset charset) {
jaroslav@49:         this(bytes, 0, bytes.length, charset);
jaroslav@49:     }
jaroslav@61:     */
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Constructs a new {@code String} by decoding the specified subarray of
jaroslav@49:      * bytes using the platform's default charset.  The length of the new
jaroslav@49:      * {@code String} is a function of the charset, and hence may not be equal
jaroslav@49:      * to the length of the subarray.
jaroslav@49:      *
jaroslav@49:      * <p> The behavior of this constructor when the given bytes are not valid
jaroslav@49:      * in the default charset is unspecified.  The {@link
jaroslav@49:      * java.nio.charset.CharsetDecoder} class should be used when more control
jaroslav@49:      * over the decoding process is required.
jaroslav@49:      *
jaroslav@49:      * @param  bytes
jaroslav@49:      *         The bytes to be decoded into characters
jaroslav@49:      *
jaroslav@49:      * @param  offset
jaroslav@49:      *         The index of the first byte to decode
jaroslav@49:      *
jaroslav@49:      * @param  length
jaroslav@49:      *         The number of bytes to decode
jaroslav@49:      *
jaroslav@49:      * @throws  IndexOutOfBoundsException
jaroslav@49:      *          If the {@code offset} and the {@code length} arguments index
jaroslav@49:      *          characters outside the bounds of the {@code bytes} array
jaroslav@49:      *
jaroslav@49:      * @since  JDK1.1
jaroslav@49:      */
jaroslav@49:     public String(byte bytes[], int offset, int length) {
jaroslav@49:         checkBounds(bytes, offset, length);
jaroslav@75:         char[] v  = new char[length];
jaroslav@75:         for (int i = 0; i < length; i++) {
jaroslav@75:             v[i] = (char)bytes[offset++];
jaroslav@75:         }
jaroslav@241:         this.r = new String(v, 0, v.length);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Constructs a new {@code String} by decoding the specified array of bytes
jaroslav@49:      * using the platform's default charset.  The length of the new {@code
jaroslav@49:      * String} is a function of the charset, and hence may not be equal to the
jaroslav@49:      * length of the byte array.
jaroslav@49:      *
jaroslav@49:      * <p> The behavior of this constructor when the given bytes are not valid
jaroslav@49:      * in the default charset is unspecified.  The {@link
jaroslav@49:      * java.nio.charset.CharsetDecoder} class should be used when more control
jaroslav@49:      * over the decoding process is required.
jaroslav@49:      *
jaroslav@49:      * @param  bytes
jaroslav@49:      *         The bytes to be decoded into characters
jaroslav@49:      *
jaroslav@49:      * @since  JDK1.1
jaroslav@49:      */
jaroslav@49:     public String(byte bytes[]) {
jaroslav@49:         this(bytes, 0, bytes.length);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Allocates a new string that contains the sequence of characters
jaroslav@49:      * currently contained in the string buffer argument. The contents of the
jaroslav@49:      * string buffer are copied; subsequent modification of the string buffer
jaroslav@49:      * does not affect the newly created string.
jaroslav@49:      *
jaroslav@49:      * @param  buffer
jaroslav@49:      *         A {@code StringBuffer}
jaroslav@49:      */
jaroslav@49:     public String(StringBuffer buffer) {
jaroslav@241:         this.r = buffer.toString();
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Allocates a new string that contains the sequence of characters
jaroslav@49:      * currently contained in the string builder argument. The contents of the
jaroslav@49:      * string builder are copied; subsequent modification of the string builder
jaroslav@49:      * does not affect the newly created string.
jaroslav@49:      *
jaroslav@49:      * <p> This constructor is provided to ease migration to {@code
jaroslav@49:      * StringBuilder}. Obtaining a string from a string builder via the {@code
jaroslav@49:      * toString} method is likely to run faster and is generally preferred.
jaroslav@49:      *
jaroslav@49:      * @param   builder
jaroslav@49:      *          A {@code StringBuilder}
jaroslav@49:      *
jaroslav@49:      * @since  1.5
jaroslav@49:      */
jaroslav@49:     public String(StringBuilder builder) {
jaroslav@241:         this.r = builder.toString();
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the length of this string.
jaroslav@49:      * The length is equal to the number of <a href="Character.html#unicode">Unicode
jaroslav@49:      * code units</a> in the string.
jaroslav@49:      *
jaroslav@49:      * @return  the length of the sequence of characters represented by this
jaroslav@49:      *          object.
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = "self", body = "return self.toString().length;")
jaroslav@49:     public int length() {
jaroslav@241:         throw new UnsupportedOperationException();
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns <tt>true</tt> if, and only if, {@link #length()} is <tt>0</tt>.
jaroslav@49:      *
jaroslav@49:      * @return <tt>true</tt> if {@link #length()} is <tt>0</tt>, otherwise
jaroslav@49:      * <tt>false</tt>
jaroslav@49:      *
jaroslav@49:      * @since 1.6
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = "self", body="return self.toString().length === 0;")
jaroslav@49:     public boolean isEmpty() {
jaroslav@241:         return length() == 0;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the <code>char</code> value at the
jaroslav@49:      * specified index. An index ranges from <code>0</code> to
jaroslav@49:      * <code>length() - 1</code>. The first <code>char</code> value of the sequence
jaroslav@49:      * is at index <code>0</code>, the next at index <code>1</code>,
jaroslav@49:      * and so on, as for array indexing.
jaroslav@49:      *
jaroslav@49:      * <p>If the <code>char</code> value specified by the index is a
jaroslav@49:      * <a href="Character.html#unicode">surrogate</a>, the surrogate
jaroslav@49:      * value is returned.
jaroslav@49:      *
jaroslav@49:      * @param      index   the index of the <code>char</code> value.
jaroslav@49:      * @return     the <code>char</code> value at the specified index of this string.
jaroslav@49:      *             The first <code>char</code> value is at index <code>0</code>.
jaroslav@49:      * @exception  IndexOutOfBoundsException  if the <code>index</code>
jaroslav@49:      *             argument is negative or not less than the length of this
jaroslav@49:      *             string.
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = { "self", "index" }, 
jaroslav@240:         body = "return self.toString().charCodeAt(index);"
jaroslav@240:     )
jaroslav@49:     public char charAt(int index) {
jaroslav@241:         throw new UnsupportedOperationException();
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the character (Unicode code point) at the specified
jaroslav@49:      * index. The index refers to <code>char</code> values
jaroslav@49:      * (Unicode code units) and ranges from <code>0</code> to
jaroslav@49:      * {@link #length()}<code> - 1</code>.
jaroslav@49:      *
jaroslav@49:      * <p> If the <code>char</code> value specified at the given index
jaroslav@49:      * is in the high-surrogate range, the following index is less
jaroslav@49:      * than the length of this <code>String</code>, and the
jaroslav@49:      * <code>char</code> value at the following index is in the
jaroslav@49:      * low-surrogate range, then the supplementary code point
jaroslav@49:      * corresponding to this surrogate pair is returned. Otherwise,
jaroslav@49:      * the <code>char</code> value at the given index is returned.
jaroslav@49:      *
jaroslav@49:      * @param      index the index to the <code>char</code> values
jaroslav@49:      * @return     the code point value of the character at the
jaroslav@49:      *             <code>index</code>
jaroslav@49:      * @exception  IndexOutOfBoundsException  if the <code>index</code>
jaroslav@49:      *             argument is negative or not less than the length of this
jaroslav@49:      *             string.
jaroslav@49:      * @since      1.5
jaroslav@49:      */
jaroslav@49:     public int codePointAt(int index) {
jaroslav@241:         if ((index < 0) || (index >= length())) {
jaroslav@49:             throw new StringIndexOutOfBoundsException(index);
jaroslav@49:         }
jaroslav@241:         return Character.codePointAtImpl(toCharArray(), offset() + index, offset() + length());
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the character (Unicode code point) before the specified
jaroslav@49:      * index. The index refers to <code>char</code> values
jaroslav@49:      * (Unicode code units) and ranges from <code>1</code> to {@link
jaroslav@49:      * CharSequence#length() length}.
jaroslav@49:      *
jaroslav@49:      * <p> If the <code>char</code> value at <code>(index - 1)</code>
jaroslav@49:      * is in the low-surrogate range, <code>(index - 2)</code> is not
jaroslav@49:      * negative, and the <code>char</code> value at <code>(index -
jaroslav@49:      * 2)</code> is in the high-surrogate range, then the
jaroslav@49:      * supplementary code point value of the surrogate pair is
jaroslav@49:      * returned. If the <code>char</code> value at <code>index -
jaroslav@49:      * 1</code> is an unpaired low-surrogate or a high-surrogate, the
jaroslav@49:      * surrogate value is returned.
jaroslav@49:      *
jaroslav@49:      * @param     index the index following the code point that should be returned
jaroslav@49:      * @return    the Unicode code point value before the given index.
jaroslav@49:      * @exception IndexOutOfBoundsException if the <code>index</code>
jaroslav@49:      *            argument is less than 1 or greater than the length
jaroslav@49:      *            of this string.
jaroslav@49:      * @since     1.5
jaroslav@49:      */
jaroslav@49:     public int codePointBefore(int index) {
jaroslav@49:         int i = index - 1;
jaroslav@241:         if ((i < 0) || (i >= length())) {
jaroslav@49:             throw new StringIndexOutOfBoundsException(index);
jaroslav@49:         }
jaroslav@241:         return Character.codePointBeforeImpl(toCharArray(), offset() + index, offset());
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the number of Unicode code points in the specified text
jaroslav@49:      * range of this <code>String</code>. The text range begins at the
jaroslav@49:      * specified <code>beginIndex</code> and extends to the
jaroslav@49:      * <code>char</code> at index <code>endIndex - 1</code>. Thus the
jaroslav@49:      * length (in <code>char</code>s) of the text range is
jaroslav@49:      * <code>endIndex-beginIndex</code>. Unpaired surrogates within
jaroslav@49:      * the text range count as one code point each.
jaroslav@49:      *
jaroslav@49:      * @param beginIndex the index to the first <code>char</code> of
jaroslav@49:      * the text range.
jaroslav@49:      * @param endIndex the index after the last <code>char</code> of
jaroslav@49:      * the text range.
jaroslav@49:      * @return the number of Unicode code points in the specified text
jaroslav@49:      * range
jaroslav@49:      * @exception IndexOutOfBoundsException if the
jaroslav@49:      * <code>beginIndex</code> is negative, or <code>endIndex</code>
jaroslav@49:      * is larger than the length of this <code>String</code>, or
jaroslav@49:      * <code>beginIndex</code> is larger than <code>endIndex</code>.
jaroslav@49:      * @since  1.5
jaroslav@49:      */
jaroslav@49:     public int codePointCount(int beginIndex, int endIndex) {
jaroslav@241:         if (beginIndex < 0 || endIndex > length() || beginIndex > endIndex) {
jaroslav@49:             throw new IndexOutOfBoundsException();
jaroslav@49:         }
jaroslav@241:         return Character.codePointCountImpl(toCharArray(), offset()+beginIndex, endIndex-beginIndex);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the index within this <code>String</code> that is
jaroslav@49:      * offset from the given <code>index</code> by
jaroslav@49:      * <code>codePointOffset</code> code points. Unpaired surrogates
jaroslav@49:      * within the text range given by <code>index</code> and
jaroslav@49:      * <code>codePointOffset</code> count as one code point each.
jaroslav@49:      *
jaroslav@49:      * @param index the index to be offset
jaroslav@49:      * @param codePointOffset the offset in code points
jaroslav@49:      * @return the index within this <code>String</code>
jaroslav@49:      * @exception IndexOutOfBoundsException if <code>index</code>
jaroslav@49:      *   is negative or larger then the length of this
jaroslav@49:      *   <code>String</code>, or if <code>codePointOffset</code> is positive
jaroslav@49:      *   and the substring starting with <code>index</code> has fewer
jaroslav@49:      *   than <code>codePointOffset</code> code points,
jaroslav@49:      *   or if <code>codePointOffset</code> is negative and the substring
jaroslav@49:      *   before <code>index</code> has fewer than the absolute value
jaroslav@49:      *   of <code>codePointOffset</code> code points.
jaroslav@49:      * @since 1.5
jaroslav@49:      */
jaroslav@49:     public int offsetByCodePoints(int index, int codePointOffset) {
jaroslav@241:         if (index < 0 || index > length()) {
jaroslav@49:             throw new IndexOutOfBoundsException();
jaroslav@49:         }
jaroslav@241:         return Character.offsetByCodePointsImpl(toCharArray(), offset(), length(),
jaroslav@241:                                                 offset()+index, codePointOffset) - offset();
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Copy characters from this string into dst starting at dstBegin.
jaroslav@49:      * This method doesn't perform any range checking.
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = { "self", "arr", "to" }, body = 
jaroslav@240:         "var s = self.toString();\n" +
jaroslav@240:         "for (var i = 0; i < s.length; i++) {\n" +
jaroslav@240:         "   arr[to++] = s[i];\n" +
jaroslav@240:         "}"
jaroslav@240:     )
jaroslav@49:     void getChars(char dst[], int dstBegin) {
jaroslav@241:         AbstractStringBuilder.arraycopy(toCharArray(), offset(), dst, dstBegin, length());
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Copies characters from this string into the destination character
jaroslav@49:      * array.
jaroslav@49:      * <p>
jaroslav@49:      * The first character to be copied is at index <code>srcBegin</code>;
jaroslav@49:      * the last character to be copied is at index <code>srcEnd-1</code>
jaroslav@49:      * (thus the total number of characters to be copied is
jaroslav@49:      * <code>srcEnd-srcBegin</code>). The characters are copied into the
jaroslav@49:      * subarray of <code>dst</code> starting at index <code>dstBegin</code>
jaroslav@49:      * and ending at index:
jaroslav@49:      * <p><blockquote><pre>
jaroslav@49:      *     dstbegin + (srcEnd-srcBegin) - 1
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      *
jaroslav@49:      * @param      srcBegin   index of the first character in the string
jaroslav@49:      *                        to copy.
jaroslav@49:      * @param      srcEnd     index after the last character in the string
jaroslav@49:      *                        to copy.
jaroslav@49:      * @param      dst        the destination array.
jaroslav@49:      * @param      dstBegin   the start offset in the destination array.
jaroslav@49:      * @exception IndexOutOfBoundsException If any of the following
jaroslav@49:      *            is true:
jaroslav@49:      *            <ul><li><code>srcBegin</code> is negative.
jaroslav@49:      *            <li><code>srcBegin</code> is greater than <code>srcEnd</code>
jaroslav@49:      *            <li><code>srcEnd</code> is greater than the length of this
jaroslav@49:      *                string
jaroslav@49:      *            <li><code>dstBegin</code> is negative
jaroslav@49:      *            <li><code>dstBegin+(srcEnd-srcBegin)</code> is larger than
jaroslav@49:      *                <code>dst.length</code></ul>
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = { "self", "beg", "end", "arr", "dst" }, body=
jaroslav@240:         "var s = self.toString();\n" +
jaroslav@240:         "while (beg < end) {\n" +
jaroslav@240:         "  arr[dst++] = s[beg++];\n" +
jaroslav@240:         "}\n"
jaroslav@240:     )
jaroslav@49:     public void getChars(int srcBegin, int srcEnd, char dst[], int dstBegin) {
jaroslav@49:         if (srcBegin < 0) {
jaroslav@49:             throw new StringIndexOutOfBoundsException(srcBegin);
jaroslav@49:         }
jaroslav@241:         if (srcEnd > length()) {
jaroslav@49:             throw new StringIndexOutOfBoundsException(srcEnd);
jaroslav@49:         }
jaroslav@49:         if (srcBegin > srcEnd) {
jaroslav@49:             throw new StringIndexOutOfBoundsException(srcEnd - srcBegin);
jaroslav@49:         }
jaroslav@241:         AbstractStringBuilder.arraycopy(toCharArray(), offset() + srcBegin, dst, dstBegin,
jaroslav@49:              srcEnd - srcBegin);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Copies characters from this string into the destination byte array. Each
jaroslav@49:      * byte receives the 8 low-order bits of the corresponding character. The
jaroslav@49:      * eight high-order bits of each character are not copied and do not
jaroslav@49:      * participate in the transfer in any way.
jaroslav@49:      *
jaroslav@49:      * <p> The first character to be copied is at index {@code srcBegin}; the
jaroslav@49:      * last character to be copied is at index {@code srcEnd-1}.  The total
jaroslav@49:      * number of characters to be copied is {@code srcEnd-srcBegin}. The
jaroslav@49:      * characters, converted to bytes, are copied into the subarray of {@code
jaroslav@49:      * dst} starting at index {@code dstBegin} and ending at index:
jaroslav@49:      *
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      *     dstbegin + (srcEnd-srcBegin) - 1
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      *
jaroslav@49:      * @deprecated  This method does not properly convert characters into
jaroslav@49:      * bytes.  As of JDK&nbsp;1.1, the preferred way to do this is via the
jaroslav@49:      * {@link #getBytes()} method, which uses the platform's default charset.
jaroslav@49:      *
jaroslav@49:      * @param  srcBegin
jaroslav@49:      *         Index of the first character in the string to copy
jaroslav@49:      *
jaroslav@49:      * @param  srcEnd
jaroslav@49:      *         Index after the last character in the string to copy
jaroslav@49:      *
jaroslav@49:      * @param  dst
jaroslav@49:      *         The destination array
jaroslav@49:      *
jaroslav@49:      * @param  dstBegin
jaroslav@49:      *         The start offset in the destination array
jaroslav@49:      *
jaroslav@49:      * @throws  IndexOutOfBoundsException
jaroslav@49:      *          If any of the following is true:
jaroslav@49:      *          <ul>
jaroslav@49:      *            <li> {@code srcBegin} is negative
jaroslav@49:      *            <li> {@code srcBegin} is greater than {@code srcEnd}
jaroslav@49:      *            <li> {@code srcEnd} is greater than the length of this String
jaroslav@49:      *            <li> {@code dstBegin} is negative
jaroslav@49:      *            <li> {@code dstBegin+(srcEnd-srcBegin)} is larger than {@code
jaroslav@49:      *                 dst.length}
jaroslav@49:      *          </ul>
jaroslav@49:      */
jaroslav@49:     @Deprecated
jaroslav@49:     public void getBytes(int srcBegin, int srcEnd, byte dst[], int dstBegin) {
jaroslav@49:         if (srcBegin < 0) {
jaroslav@49:             throw new StringIndexOutOfBoundsException(srcBegin);
jaroslav@49:         }
jaroslav@241:         if (srcEnd > length()) {
jaroslav@49:             throw new StringIndexOutOfBoundsException(srcEnd);
jaroslav@49:         }
jaroslav@49:         if (srcBegin > srcEnd) {
jaroslav@49:             throw new StringIndexOutOfBoundsException(srcEnd - srcBegin);
jaroslav@49:         }
jaroslav@49:         int j = dstBegin;
jaroslav@241:         int n = offset() + srcEnd;
jaroslav@241:         int i = offset() + srcBegin;
jaroslav@241:         char[] val = toCharArray();   /* avoid getfield opcode */
jaroslav@49: 
jaroslav@49:         while (i < n) {
jaroslav@49:             dst[j++] = (byte)val[i++];
jaroslav@49:         }
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Encodes this {@code String} into a sequence of bytes using the named
jaroslav@49:      * charset, storing the result into a new byte array.
jaroslav@49:      *
jaroslav@49:      * <p> The behavior of this method when this string cannot be encoded in
jaroslav@49:      * the given charset is unspecified.  The {@link
jaroslav@49:      * java.nio.charset.CharsetEncoder} class should be used when more control
jaroslav@49:      * over the encoding process is required.
jaroslav@49:      *
jaroslav@49:      * @param  charsetName
jaroslav@49:      *         The name of a supported {@linkplain java.nio.charset.Charset
jaroslav@49:      *         charset}
jaroslav@49:      *
jaroslav@49:      * @return  The resultant byte array
jaroslav@49:      *
jaroslav@49:      * @throws  UnsupportedEncodingException
jaroslav@49:      *          If the named charset is not supported
jaroslav@49:      *
jaroslav@49:      * @since  JDK1.1
jaroslav@49:      */
jaroslav@74: //    public byte[] getBytes(String charsetName)
jaroslav@74: //        throws UnsupportedEncodingException
jaroslav@74: //    {
jaroslav@74: //        if (charsetName == null) throw new NullPointerException();
jaroslav@74: //        return StringCoding.encode(charsetName, value, offset, count);
jaroslav@74: //    }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Encodes this {@code String} into a sequence of bytes using the given
jaroslav@49:      * {@linkplain java.nio.charset.Charset charset}, storing the result into a
jaroslav@49:      * new byte array.
jaroslav@49:      *
jaroslav@49:      * <p> This method always replaces malformed-input and unmappable-character
jaroslav@49:      * sequences with this charset's default replacement byte array.  The
jaroslav@49:      * {@link java.nio.charset.CharsetEncoder} class should be used when more
jaroslav@49:      * control over the encoding process is required.
jaroslav@49:      *
jaroslav@49:      * @param  charset
jaroslav@49:      *         The {@linkplain java.nio.charset.Charset} to be used to encode
jaroslav@49:      *         the {@code String}
jaroslav@49:      *
jaroslav@49:      * @return  The resultant byte array
jaroslav@49:      *
jaroslav@49:      * @since  1.6
jaroslav@49:      */
jaroslav@61:     /* don't want dep on Charset
jaroslav@49:     public byte[] getBytes(Charset charset) {
jaroslav@49:         if (charset == null) throw new NullPointerException();
jaroslav@49:         return StringCoding.encode(charset, value, offset, count);
jaroslav@49:     }
jaroslav@61:     */
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Encodes this {@code String} into a sequence of bytes using the
jaroslav@49:      * platform's default charset, storing the result into a new byte array.
jaroslav@49:      *
jaroslav@49:      * <p> The behavior of this method when this string cannot be encoded in
jaroslav@49:      * the default charset is unspecified.  The {@link
jaroslav@49:      * java.nio.charset.CharsetEncoder} class should be used when more control
jaroslav@49:      * over the encoding process is required.
jaroslav@49:      *
jaroslav@49:      * @return  The resultant byte array
jaroslav@49:      *
jaroslav@49:      * @since      JDK1.1
jaroslav@49:      */
jaroslav@49:     public byte[] getBytes() {
jaroslav@75:         byte[] arr = new byte[length()];
jaroslav@75:         for (int i = 0; i < arr.length; i++) {
jaroslav@75:             final char v = charAt(i);
jaroslav@75:             arr[i] = (byte)v;
jaroslav@75:         }
jaroslav@75:         return arr;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Compares this string to the specified object.  The result is {@code
jaroslav@49:      * true} if and only if the argument is not {@code null} and is a {@code
jaroslav@49:      * String} object that represents the same sequence of characters as this
jaroslav@49:      * object.
jaroslav@49:      *
jaroslav@49:      * @param  anObject
jaroslav@49:      *         The object to compare this {@code String} against
jaroslav@49:      *
jaroslav@49:      * @return  {@code true} if the given object represents a {@code String}
jaroslav@49:      *          equivalent to this string, {@code false} otherwise
jaroslav@49:      *
jaroslav@49:      * @see  #compareTo(String)
jaroslav@49:      * @see  #equalsIgnoreCase(String)
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = { "self", "obj" }, body = 
jaroslav@240:         "return obj.$instOf_java_lang_String && "
jaroslav@240:         + "self.toString() === obj.toString();"
jaroslav@240:     )
jaroslav@49:     public boolean equals(Object anObject) {
jaroslav@49:         if (this == anObject) {
jaroslav@49:             return true;
jaroslav@49:         }
jaroslav@49:         if (anObject instanceof String) {
jaroslav@49:             String anotherString = (String)anObject;
jaroslav@241:             int n = length();
jaroslav@241:             if (n == anotherString.length()) {
jaroslav@241:                 char v1[] = toCharArray();
jaroslav@241:                 char v2[] = anotherString.toCharArray();
jaroslav@241:                 int i = offset();
jaroslav@241:                 int j = anotherString.offset();
jaroslav@49:                 while (n-- != 0) {
jaroslav@49:                     if (v1[i++] != v2[j++])
jaroslav@49:                         return false;
jaroslav@49:                 }
jaroslav@49:                 return true;
jaroslav@49:             }
jaroslav@49:         }
jaroslav@49:         return false;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Compares this string to the specified {@code StringBuffer}.  The result
jaroslav@49:      * is {@code true} if and only if this {@code String} represents the same
jaroslav@49:      * sequence of characters as the specified {@code StringBuffer}.
jaroslav@49:      *
jaroslav@49:      * @param  sb
jaroslav@49:      *         The {@code StringBuffer} to compare this {@code String} against
jaroslav@49:      *
jaroslav@49:      * @return  {@code true} if this {@code String} represents the same
jaroslav@49:      *          sequence of characters as the specified {@code StringBuffer},
jaroslav@49:      *          {@code false} otherwise
jaroslav@49:      *
jaroslav@49:      * @since  1.4
jaroslav@49:      */
jaroslav@49:     public boolean contentEquals(StringBuffer sb) {
jaroslav@49:         synchronized(sb) {
jaroslav@49:             return contentEquals((CharSequence)sb);
jaroslav@49:         }
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Compares this string to the specified {@code CharSequence}.  The result
jaroslav@49:      * is {@code true} if and only if this {@code String} represents the same
jaroslav@49:      * sequence of char values as the specified sequence.
jaroslav@49:      *
jaroslav@49:      * @param  cs
jaroslav@49:      *         The sequence to compare this {@code String} against
jaroslav@49:      *
jaroslav@49:      * @return  {@code true} if this {@code String} represents the same
jaroslav@49:      *          sequence of char values as the specified sequence, {@code
jaroslav@49:      *          false} otherwise
jaroslav@49:      *
jaroslav@49:      * @since  1.5
jaroslav@49:      */
jaroslav@49:     public boolean contentEquals(CharSequence cs) {
jaroslav@241:         if (length() != cs.length())
jaroslav@49:             return false;
jaroslav@49:         // Argument is a StringBuffer, StringBuilder
jaroslav@49:         if (cs instanceof AbstractStringBuilder) {
jaroslav@241:             char v1[] = toCharArray();
jaroslav@49:             char v2[] = ((AbstractStringBuilder)cs).getValue();
jaroslav@241:             int i = offset();
jaroslav@49:             int j = 0;
jaroslav@241:             int n = length();
jaroslav@49:             while (n-- != 0) {
jaroslav@49:                 if (v1[i++] != v2[j++])
jaroslav@49:                     return false;
jaroslav@49:             }
jaroslav@49:             return true;
jaroslav@49:         }
jaroslav@49:         // Argument is a String
jaroslav@49:         if (cs.equals(this))
jaroslav@49:             return true;
jaroslav@49:         // Argument is a generic CharSequence
jaroslav@241:         char v1[] = toCharArray();
jaroslav@241:         int i = offset();
jaroslav@49:         int j = 0;
jaroslav@241:         int n = length();
jaroslav@49:         while (n-- != 0) {
jaroslav@49:             if (v1[i++] != cs.charAt(j++))
jaroslav@49:                 return false;
jaroslav@49:         }
jaroslav@49:         return true;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Compares this {@code String} to another {@code String}, ignoring case
jaroslav@49:      * considerations.  Two strings are considered equal ignoring case if they
jaroslav@49:      * are of the same length and corresponding characters in the two strings
jaroslav@49:      * are equal ignoring case.
jaroslav@49:      *
jaroslav@49:      * <p> Two characters {@code c1} and {@code c2} are considered the same
jaroslav@49:      * ignoring case if at least one of the following is true:
jaroslav@49:      * <ul>
jaroslav@49:      *   <li> The two characters are the same (as compared by the
jaroslav@49:      *        {@code ==} operator)
jaroslav@49:      *   <li> Applying the method {@link
jaroslav@49:      *        java.lang.Character#toUpperCase(char)} to each character
jaroslav@49:      *        produces the same result
jaroslav@49:      *   <li> Applying the method {@link
jaroslav@49:      *        java.lang.Character#toLowerCase(char)} to each character
jaroslav@49:      *        produces the same result
jaroslav@49:      * </ul>
jaroslav@49:      *
jaroslav@49:      * @param  anotherString
jaroslav@49:      *         The {@code String} to compare this {@code String} against
jaroslav@49:      *
jaroslav@49:      * @return  {@code true} if the argument is not {@code null} and it
jaroslav@49:      *          represents an equivalent {@code String} ignoring case; {@code
jaroslav@49:      *          false} otherwise
jaroslav@49:      *
jaroslav@49:      * @see  #equals(Object)
jaroslav@49:      */
jaroslav@49:     public boolean equalsIgnoreCase(String anotherString) {
jaroslav@49:         return (this == anotherString) ? true :
jaroslav@241:                (anotherString != null) && (anotherString.length() == length()) &&
jaroslav@241:                regionMatches(true, 0, anotherString, 0, length());
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Compares two strings lexicographically.
jaroslav@49:      * The comparison is based on the Unicode value of each character in
jaroslav@49:      * the strings. The character sequence represented by this
jaroslav@49:      * <code>String</code> object is compared lexicographically to the
jaroslav@49:      * character sequence represented by the argument string. The result is
jaroslav@49:      * a negative integer if this <code>String</code> object
jaroslav@49:      * lexicographically precedes the argument string. The result is a
jaroslav@49:      * positive integer if this <code>String</code> object lexicographically
jaroslav@49:      * follows the argument string. The result is zero if the strings
jaroslav@49:      * are equal; <code>compareTo</code> returns <code>0</code> exactly when
jaroslav@49:      * the {@link #equals(Object)} method would return <code>true</code>.
jaroslav@49:      * <p>
jaroslav@49:      * This is the definition of lexicographic ordering. If two strings are
jaroslav@49:      * different, then either they have different characters at some index
jaroslav@49:      * that is a valid index for both strings, or their lengths are different,
jaroslav@49:      * or both. If they have different characters at one or more index
jaroslav@49:      * positions, let <i>k</i> be the smallest such index; then the string
jaroslav@49:      * whose character at position <i>k</i> has the smaller value, as
jaroslav@49:      * determined by using the &lt; operator, lexicographically precedes the
jaroslav@49:      * other string. In this case, <code>compareTo</code> returns the
jaroslav@49:      * difference of the two character values at position <code>k</code> in
jaroslav@49:      * the two string -- that is, the value:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * this.charAt(k)-anotherString.charAt(k)
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * If there is no index position at which they differ, then the shorter
jaroslav@49:      * string lexicographically precedes the longer string. In this case,
jaroslav@49:      * <code>compareTo</code> returns the difference of the lengths of the
jaroslav@49:      * strings -- that is, the value:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * this.length()-anotherString.length()
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      *
jaroslav@49:      * @param   anotherString   the <code>String</code> to be compared.
jaroslav@49:      * @return  the value <code>0</code> if the argument string is equal to
jaroslav@49:      *          this string; a value less than <code>0</code> if this string
jaroslav@49:      *          is lexicographically less than the string argument; and a
jaroslav@49:      *          value greater than <code>0</code> if this string is
jaroslav@49:      *          lexicographically greater than the string argument.
jaroslav@49:      */
jaroslav@49:     public int compareTo(String anotherString) {
jaroslav@241:         int len1 = length();
jaroslav@241:         int len2 = anotherString.length();
jaroslav@49:         int n = Math.min(len1, len2);
jaroslav@241:         char v1[] = toCharArray();
jaroslav@241:         char v2[] = anotherString.toCharArray();
jaroslav@241:         int i = offset();
jaroslav@241:         int j = anotherString.offset();
jaroslav@49: 
jaroslav@49:         if (i == j) {
jaroslav@49:             int k = i;
jaroslav@49:             int lim = n + i;
jaroslav@49:             while (k < lim) {
jaroslav@49:                 char c1 = v1[k];
jaroslav@49:                 char c2 = v2[k];
jaroslav@49:                 if (c1 != c2) {
jaroslav@49:                     return c1 - c2;
jaroslav@49:                 }
jaroslav@49:                 k++;
jaroslav@49:             }
jaroslav@49:         } else {
jaroslav@49:             while (n-- != 0) {
jaroslav@49:                 char c1 = v1[i++];
jaroslav@49:                 char c2 = v2[j++];
jaroslav@49:                 if (c1 != c2) {
jaroslav@49:                     return c1 - c2;
jaroslav@49:                 }
jaroslav@49:             }
jaroslav@49:         }
jaroslav@49:         return len1 - len2;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * A Comparator that orders <code>String</code> objects as by
jaroslav@49:      * <code>compareToIgnoreCase</code>. This comparator is serializable.
jaroslav@49:      * <p>
jaroslav@49:      * Note that this Comparator does <em>not</em> take locale into account,
jaroslav@49:      * and will result in an unsatisfactory ordering for certain locales.
jaroslav@49:      * The java.text package provides <em>Collators</em> to allow
jaroslav@49:      * locale-sensitive ordering.
jaroslav@49:      *
jaroslav@49:      * @see     java.text.Collator#compare(String, String)
jaroslav@49:      * @since   1.2
jaroslav@49:      */
jaroslav@49:     public static final Comparator<String> CASE_INSENSITIVE_ORDER
jaroslav@49:                                          = new CaseInsensitiveComparator();
jaroslav@241: 
jaroslav@241:     private static int offset() {
jaroslav@241:         return 0;
jaroslav@241:     }
jaroslav@241:     
jaroslav@49:     private static class CaseInsensitiveComparator
jaroslav@49:                          implements Comparator<String>, java.io.Serializable {
jaroslav@49:         // use serialVersionUID from JDK 1.2.2 for interoperability
jaroslav@49:         private static final long serialVersionUID = 8575799808933029326L;
jaroslav@49: 
jaroslav@49:         public int compare(String s1, String s2) {
jaroslav@49:             int n1 = s1.length();
jaroslav@49:             int n2 = s2.length();
jaroslav@49:             int min = Math.min(n1, n2);
jaroslav@49:             for (int i = 0; i < min; i++) {
jaroslav@49:                 char c1 = s1.charAt(i);
jaroslav@49:                 char c2 = s2.charAt(i);
jaroslav@49:                 if (c1 != c2) {
jaroslav@49:                     c1 = Character.toUpperCase(c1);
jaroslav@49:                     c2 = Character.toUpperCase(c2);
jaroslav@49:                     if (c1 != c2) {
jaroslav@49:                         c1 = Character.toLowerCase(c1);
jaroslav@49:                         c2 = Character.toLowerCase(c2);
jaroslav@49:                         if (c1 != c2) {
jaroslav@49:                             // No overflow because of numeric promotion
jaroslav@49:                             return c1 - c2;
jaroslav@49:                         }
jaroslav@49:                     }
jaroslav@49:                 }
jaroslav@49:             }
jaroslav@49:             return n1 - n2;
jaroslav@49:         }
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Compares two strings lexicographically, ignoring case
jaroslav@49:      * differences. This method returns an integer whose sign is that of
jaroslav@49:      * calling <code>compareTo</code> with normalized versions of the strings
jaroslav@49:      * where case differences have been eliminated by calling
jaroslav@49:      * <code>Character.toLowerCase(Character.toUpperCase(character))</code> on
jaroslav@49:      * each character.
jaroslav@49:      * <p>
jaroslav@49:      * Note that this method does <em>not</em> take locale into account,
jaroslav@49:      * and will result in an unsatisfactory ordering for certain locales.
jaroslav@49:      * The java.text package provides <em>collators</em> to allow
jaroslav@49:      * locale-sensitive ordering.
jaroslav@49:      *
jaroslav@49:      * @param   str   the <code>String</code> to be compared.
jaroslav@49:      * @return  a negative integer, zero, or a positive integer as the
jaroslav@49:      *          specified String is greater than, equal to, or less
jaroslav@49:      *          than this String, ignoring case considerations.
jaroslav@49:      * @see     java.text.Collator#compare(String, String)
jaroslav@49:      * @since   1.2
jaroslav@49:      */
jaroslav@49:     public int compareToIgnoreCase(String str) {
jaroslav@49:         return CASE_INSENSITIVE_ORDER.compare(this, str);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Tests if two string regions are equal.
jaroslav@49:      * <p>
jaroslav@49:      * A substring of this <tt>String</tt> object is compared to a substring
jaroslav@49:      * of the argument other. The result is true if these substrings
jaroslav@49:      * represent identical character sequences. The substring of this
jaroslav@49:      * <tt>String</tt> object to be compared begins at index <tt>toffset</tt>
jaroslav@49:      * and has length <tt>len</tt>. The substring of other to be compared
jaroslav@49:      * begins at index <tt>ooffset</tt> and has length <tt>len</tt>. The
jaroslav@49:      * result is <tt>false</tt> if and only if at least one of the following
jaroslav@49:      * is true:
jaroslav@49:      * <ul><li><tt>toffset</tt> is negative.
jaroslav@49:      * <li><tt>ooffset</tt> is negative.
jaroslav@49:      * <li><tt>toffset+len</tt> is greater than the length of this
jaroslav@49:      * <tt>String</tt> object.
jaroslav@49:      * <li><tt>ooffset+len</tt> is greater than the length of the other
jaroslav@49:      * argument.
jaroslav@49:      * <li>There is some nonnegative integer <i>k</i> less than <tt>len</tt>
jaroslav@49:      * such that:
jaroslav@49:      * <tt>this.charAt(toffset+<i>k</i>)&nbsp;!=&nbsp;other.charAt(ooffset+<i>k</i>)</tt>
jaroslav@49:      * </ul>
jaroslav@49:      *
jaroslav@49:      * @param   toffset   the starting offset of the subregion in this string.
jaroslav@49:      * @param   other     the string argument.
jaroslav@49:      * @param   ooffset   the starting offset of the subregion in the string
jaroslav@49:      *                    argument.
jaroslav@49:      * @param   len       the number of characters to compare.
jaroslav@49:      * @return  <code>true</code> if the specified subregion of this string
jaroslav@49:      *          exactly matches the specified subregion of the string argument;
jaroslav@49:      *          <code>false</code> otherwise.
jaroslav@49:      */
jaroslav@49:     public boolean regionMatches(int toffset, String other, int ooffset,
jaroslav@49:                                  int len) {
jaroslav@241:         char ta[] = toCharArray();
jaroslav@241:         int to = offset() + toffset;
jaroslav@241:         char pa[] = other.toCharArray();
jaroslav@241:         int po = other.offset() + ooffset;
jaroslav@49:         // Note: toffset, ooffset, or len might be near -1>>>1.
jaroslav@241:         if ((ooffset < 0) || (toffset < 0) || (toffset > (long)length() - len)
jaroslav@241:             || (ooffset > (long)other.length() - len)) {
jaroslav@49:             return false;
jaroslav@49:         }
jaroslav@49:         while (len-- > 0) {
jaroslav@49:             if (ta[to++] != pa[po++]) {
jaroslav@49:                 return false;
jaroslav@49:             }
jaroslav@49:         }
jaroslav@49:         return true;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Tests if two string regions are equal.
jaroslav@49:      * <p>
jaroslav@49:      * A substring of this <tt>String</tt> object is compared to a substring
jaroslav@49:      * of the argument <tt>other</tt>. The result is <tt>true</tt> if these
jaroslav@49:      * substrings represent character sequences that are the same, ignoring
jaroslav@49:      * case if and only if <tt>ignoreCase</tt> is true. The substring of
jaroslav@49:      * this <tt>String</tt> object to be compared begins at index
jaroslav@49:      * <tt>toffset</tt> and has length <tt>len</tt>. The substring of
jaroslav@49:      * <tt>other</tt> to be compared begins at index <tt>ooffset</tt> and
jaroslav@49:      * has length <tt>len</tt>. The result is <tt>false</tt> if and only if
jaroslav@49:      * at least one of the following is true:
jaroslav@49:      * <ul><li><tt>toffset</tt> is negative.
jaroslav@49:      * <li><tt>ooffset</tt> is negative.
jaroslav@49:      * <li><tt>toffset+len</tt> is greater than the length of this
jaroslav@49:      * <tt>String</tt> object.
jaroslav@49:      * <li><tt>ooffset+len</tt> is greater than the length of the other
jaroslav@49:      * argument.
jaroslav@49:      * <li><tt>ignoreCase</tt> is <tt>false</tt> and there is some nonnegative
jaroslav@49:      * integer <i>k</i> less than <tt>len</tt> such that:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * this.charAt(toffset+k) != other.charAt(ooffset+k)
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * <li><tt>ignoreCase</tt> is <tt>true</tt> and there is some nonnegative
jaroslav@49:      * integer <i>k</i> less than <tt>len</tt> such that:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * Character.toLowerCase(this.charAt(toffset+k)) !=
jaroslav@49:                Character.toLowerCase(other.charAt(ooffset+k))
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * and:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * Character.toUpperCase(this.charAt(toffset+k)) !=
jaroslav@49:      *         Character.toUpperCase(other.charAt(ooffset+k))
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * </ul>
jaroslav@49:      *
jaroslav@49:      * @param   ignoreCase   if <code>true</code>, ignore case when comparing
jaroslav@49:      *                       characters.
jaroslav@49:      * @param   toffset      the starting offset of the subregion in this
jaroslav@49:      *                       string.
jaroslav@49:      * @param   other        the string argument.
jaroslav@49:      * @param   ooffset      the starting offset of the subregion in the string
jaroslav@49:      *                       argument.
jaroslav@49:      * @param   len          the number of characters to compare.
jaroslav@49:      * @return  <code>true</code> if the specified subregion of this string
jaroslav@49:      *          matches the specified subregion of the string argument;
jaroslav@49:      *          <code>false</code> otherwise. Whether the matching is exact
jaroslav@49:      *          or case insensitive depends on the <code>ignoreCase</code>
jaroslav@49:      *          argument.
jaroslav@49:      */
jaroslav@49:     public boolean regionMatches(boolean ignoreCase, int toffset,
jaroslav@49:                            String other, int ooffset, int len) {
jaroslav@241:         char ta[] = toCharArray();
jaroslav@241:         int to = offset() + toffset;
jaroslav@241:         char pa[] = other.toCharArray();
jaroslav@241:         int po = other.offset() + ooffset;
jaroslav@49:         // Note: toffset, ooffset, or len might be near -1>>>1.
jaroslav@241:         if ((ooffset < 0) || (toffset < 0) || (toffset > (long)length() - len) ||
jaroslav@241:                 (ooffset > (long)other.length() - len)) {
jaroslav@49:             return false;
jaroslav@49:         }
jaroslav@49:         while (len-- > 0) {
jaroslav@49:             char c1 = ta[to++];
jaroslav@49:             char c2 = pa[po++];
jaroslav@49:             if (c1 == c2) {
jaroslav@49:                 continue;
jaroslav@49:             }
jaroslav@49:             if (ignoreCase) {
jaroslav@49:                 // If characters don't match but case may be ignored,
jaroslav@49:                 // try converting both characters to uppercase.
jaroslav@49:                 // If the results match, then the comparison scan should
jaroslav@49:                 // continue.
jaroslav@49:                 char u1 = Character.toUpperCase(c1);
jaroslav@49:                 char u2 = Character.toUpperCase(c2);
jaroslav@49:                 if (u1 == u2) {
jaroslav@49:                     continue;
jaroslav@49:                 }
jaroslav@49:                 // Unfortunately, conversion to uppercase does not work properly
jaroslav@49:                 // for the Georgian alphabet, which has strange rules about case
jaroslav@49:                 // conversion.  So we need to make one last check before
jaroslav@49:                 // exiting.
jaroslav@49:                 if (Character.toLowerCase(u1) == Character.toLowerCase(u2)) {
jaroslav@49:                     continue;
jaroslav@49:                 }
jaroslav@49:             }
jaroslav@49:             return false;
jaroslav@49:         }
jaroslav@49:         return true;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Tests if the substring of this string beginning at the
jaroslav@49:      * specified index starts with the specified prefix.
jaroslav@49:      *
jaroslav@49:      * @param   prefix    the prefix.
jaroslav@49:      * @param   toffset   where to begin looking in this string.
jaroslav@49:      * @return  <code>true</code> if the character sequence represented by the
jaroslav@49:      *          argument is a prefix of the substring of this object starting
jaroslav@49:      *          at index <code>toffset</code>; <code>false</code> otherwise.
jaroslav@49:      *          The result is <code>false</code> if <code>toffset</code> is
jaroslav@49:      *          negative or greater than the length of this
jaroslav@49:      *          <code>String</code> object; otherwise the result is the same
jaroslav@49:      *          as the result of the expression
jaroslav@49:      *          <pre>
jaroslav@49:      *          this.substring(toffset).startsWith(prefix)
jaroslav@49:      *          </pre>
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = { "self", "find", "from" }, body=
jaroslav@240:         "find = find.toString();\n" +
jaroslav@296:         "return self.toString().substring(from, from + find.length) === find;\n"
jaroslav@240:     )
jaroslav@49:     public boolean startsWith(String prefix, int toffset) {
jaroslav@241:         char ta[] = toCharArray();
jaroslav@241:         int to = offset() + toffset;
jaroslav@241:         char pa[] = prefix.toCharArray();
jaroslav@241:         int po = prefix.offset();
jaroslav@241:         int pc = prefix.length();
jaroslav@49:         // Note: toffset might be near -1>>>1.
jaroslav@241:         if ((toffset < 0) || (toffset > length() - pc)) {
jaroslav@49:             return false;
jaroslav@49:         }
jaroslav@49:         while (--pc >= 0) {
jaroslav@49:             if (ta[to++] != pa[po++]) {
jaroslav@49:                 return false;
jaroslav@49:             }
jaroslav@49:         }
jaroslav@49:         return true;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Tests if this string starts with the specified prefix.
jaroslav@49:      *
jaroslav@49:      * @param   prefix   the prefix.
jaroslav@49:      * @return  <code>true</code> if the character sequence represented by the
jaroslav@49:      *          argument is a prefix of the character sequence represented by
jaroslav@49:      *          this string; <code>false</code> otherwise.
jaroslav@49:      *          Note also that <code>true</code> will be returned if the
jaroslav@49:      *          argument is an empty string or is equal to this
jaroslav@49:      *          <code>String</code> object as determined by the
jaroslav@49:      *          {@link #equals(Object)} method.
jaroslav@49:      * @since   1. 0
jaroslav@49:      */
jaroslav@49:     public boolean startsWith(String prefix) {
jaroslav@49:         return startsWith(prefix, 0);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Tests if this string ends with the specified suffix.
jaroslav@49:      *
jaroslav@49:      * @param   suffix   the suffix.
jaroslav@49:      * @return  <code>true</code> if the character sequence represented by the
jaroslav@49:      *          argument is a suffix of the character sequence represented by
jaroslav@49:      *          this object; <code>false</code> otherwise. Note that the
jaroslav@49:      *          result will be <code>true</code> if the argument is the
jaroslav@49:      *          empty string or is equal to this <code>String</code> object
jaroslav@49:      *          as determined by the {@link #equals(Object)} method.
jaroslav@49:      */
jaroslav@49:     public boolean endsWith(String suffix) {
jaroslav@241:         return startsWith(suffix, length() - suffix.length());
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns a hash code for this string. The hash code for a
jaroslav@49:      * <code>String</code> object is computed as
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * s[0]*31^(n-1) + s[1]*31^(n-2) + ... + s[n-1]
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * using <code>int</code> arithmetic, where <code>s[i]</code> is the
jaroslav@49:      * <i>i</i>th character of the string, <code>n</code> is the length of
jaroslav@49:      * the string, and <code>^</code> indicates exponentiation.
jaroslav@49:      * (The hash value of the empty string is zero.)
jaroslav@49:      *
jaroslav@49:      * @return  a hash code value for this object.
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = "self", body = 
jaroslav@240:         "var h = 0;\n" +
jaroslav@240:         "var s = self.toString();\n" +
jaroslav@240:         "for (var i = 0; i < s.length; i++) {\n" +
jaroslav@240:         "  var high = (h >> 16) & 0xffff, low = h & 0xffff;\n" +
jaroslav@240:         "  h = (((((31 * high) & 0xffff) << 16) >>> 0) + (31 * low) + s.charCodeAt(i)) & 0xffffffff;\n" +
jaroslav@240:         "}\n" +
jaroslav@240:         "return h;\n"
jaroslav@240:     )
jaroslav@49:     public int hashCode() {
jaroslav@49:         int h = hash;
jaroslav@241:         if (h == 0 && length() > 0) {
jaroslav@241:             int off = offset();
jaroslav@241:             char val[] = toCharArray();
jaroslav@241:             int len = length();
jaroslav@49: 
jaroslav@49:             for (int i = 0; i < len; i++) {
jaroslav@49:                 h = 31*h + val[off++];
jaroslav@49:             }
jaroslav@49:             hash = h;
jaroslav@49:         }
jaroslav@49:         return h;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the index within this string of the first occurrence of
jaroslav@49:      * the specified character. If a character with value
jaroslav@49:      * <code>ch</code> occurs in the character sequence represented by
jaroslav@49:      * this <code>String</code> object, then the index (in Unicode
jaroslav@49:      * code units) of the first such occurrence is returned. For
jaroslav@49:      * values of <code>ch</code> in the range from 0 to 0xFFFF
jaroslav@49:      * (inclusive), this is the smallest value <i>k</i> such that:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * this.charAt(<i>k</i>) == ch
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * is true. For other values of <code>ch</code>, it is the
jaroslav@49:      * smallest value <i>k</i> such that:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * this.codePointAt(<i>k</i>) == ch
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * is true. In either case, if no such character occurs in this
jaroslav@49:      * string, then <code>-1</code> is returned.
jaroslav@49:      *
jaroslav@49:      * @param   ch   a character (Unicode code point).
jaroslav@49:      * @return  the index of the first occurrence of the character in the
jaroslav@49:      *          character sequence represented by this object, or
jaroslav@49:      *          <code>-1</code> if the character does not occur.
jaroslav@49:      */
jaroslav@49:     public int indexOf(int ch) {
jaroslav@49:         return indexOf(ch, 0);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the index within this string of the first occurrence of the
jaroslav@49:      * specified character, starting the search at the specified index.
jaroslav@49:      * <p>
jaroslav@49:      * If a character with value <code>ch</code> occurs in the
jaroslav@49:      * character sequence represented by this <code>String</code>
jaroslav@49:      * object at an index no smaller than <code>fromIndex</code>, then
jaroslav@49:      * the index of the first such occurrence is returned. For values
jaroslav@49:      * of <code>ch</code> in the range from 0 to 0xFFFF (inclusive),
jaroslav@49:      * this is the smallest value <i>k</i> such that:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * (this.charAt(<i>k</i>) == ch) && (<i>k</i> &gt;= fromIndex)
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * is true. For other values of <code>ch</code>, it is the
jaroslav@49:      * smallest value <i>k</i> such that:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * (this.codePointAt(<i>k</i>) == ch) && (<i>k</i> &gt;= fromIndex)
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * is true. In either case, if no such character occurs in this
jaroslav@49:      * string at or after position <code>fromIndex</code>, then
jaroslav@49:      * <code>-1</code> is returned.
jaroslav@49:      *
jaroslav@49:      * <p>
jaroslav@49:      * There is no restriction on the value of <code>fromIndex</code>. If it
jaroslav@49:      * is negative, it has the same effect as if it were zero: this entire
jaroslav@49:      * string may be searched. If it is greater than the length of this
jaroslav@49:      * string, it has the same effect as if it were equal to the length of
jaroslav@49:      * this string: <code>-1</code> is returned.
jaroslav@49:      *
jaroslav@49:      * <p>All indices are specified in <code>char</code> values
jaroslav@49:      * (Unicode code units).
jaroslav@49:      *
jaroslav@49:      * @param   ch          a character (Unicode code point).
jaroslav@49:      * @param   fromIndex   the index to start the search from.
jaroslav@49:      * @return  the index of the first occurrence of the character in the
jaroslav@49:      *          character sequence represented by this object that is greater
jaroslav@49:      *          than or equal to <code>fromIndex</code>, or <code>-1</code>
jaroslav@49:      *          if the character does not occur.
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = { "self", "ch", "from" }, body = 
jaroslav@240:         "if (typeof ch === 'number') ch = String.fromCharCode(ch);\n" +
jaroslav@240:         "return self.toString().indexOf(ch, from);\n"
jaroslav@240:     )
jaroslav@49:     public int indexOf(int ch, int fromIndex) {
jaroslav@49:         if (fromIndex < 0) {
jaroslav@49:             fromIndex = 0;
jaroslav@241:         } else if (fromIndex >= length()) {
jaroslav@49:             // Note: fromIndex might be near -1>>>1.
jaroslav@49:             return -1;
jaroslav@49:         }
jaroslav@49: 
jaroslav@49:         if (ch < Character.MIN_SUPPLEMENTARY_CODE_POINT) {
jaroslav@49:             // handle most cases here (ch is a BMP code point or a
jaroslav@49:             // negative value (invalid code point))
jaroslav@241:             final char[] value = this.toCharArray();
jaroslav@241:             final int offset = this.offset();
jaroslav@241:             final int max = offset + length();
jaroslav@49:             for (int i = offset + fromIndex; i < max ; i++) {
jaroslav@49:                 if (value[i] == ch) {
jaroslav@49:                     return i - offset;
jaroslav@49:                 }
jaroslav@49:             }
jaroslav@49:             return -1;
jaroslav@49:         } else {
jaroslav@49:             return indexOfSupplementary(ch, fromIndex);
jaroslav@49:         }
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Handles (rare) calls of indexOf with a supplementary character.
jaroslav@49:      */
jaroslav@49:     private int indexOfSupplementary(int ch, int fromIndex) {
jaroslav@49:         if (Character.isValidCodePoint(ch)) {
jaroslav@241:             final char[] value = this.toCharArray();
jaroslav@241:             final int offset = this.offset();
jaroslav@49:             final char hi = Character.highSurrogate(ch);
jaroslav@49:             final char lo = Character.lowSurrogate(ch);
jaroslav@241:             final int max = offset + length() - 1;
jaroslav@49:             for (int i = offset + fromIndex; i < max; i++) {
jaroslav@49:                 if (value[i] == hi && value[i+1] == lo) {
jaroslav@49:                     return i - offset;
jaroslav@49:                 }
jaroslav@49:             }
jaroslav@49:         }
jaroslav@49:         return -1;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the index within this string of the last occurrence of
jaroslav@49:      * the specified character. For values of <code>ch</code> in the
jaroslav@49:      * range from 0 to 0xFFFF (inclusive), the index (in Unicode code
jaroslav@49:      * units) returned is the largest value <i>k</i> such that:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * this.charAt(<i>k</i>) == ch
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * is true. For other values of <code>ch</code>, it is the
jaroslav@49:      * largest value <i>k</i> such that:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * this.codePointAt(<i>k</i>) == ch
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * is true.  In either case, if no such character occurs in this
jaroslav@49:      * string, then <code>-1</code> is returned.  The
jaroslav@49:      * <code>String</code> is searched backwards starting at the last
jaroslav@49:      * character.
jaroslav@49:      *
jaroslav@49:      * @param   ch   a character (Unicode code point).
jaroslav@49:      * @return  the index of the last occurrence of the character in the
jaroslav@49:      *          character sequence represented by this object, or
jaroslav@49:      *          <code>-1</code> if the character does not occur.
jaroslav@49:      */
jaroslav@49:     public int lastIndexOf(int ch) {
jaroslav@241:         return lastIndexOf(ch, length() - 1);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the index within this string of the last occurrence of
jaroslav@49:      * the specified character, searching backward starting at the
jaroslav@49:      * specified index. For values of <code>ch</code> in the range
jaroslav@49:      * from 0 to 0xFFFF (inclusive), the index returned is the largest
jaroslav@49:      * value <i>k</i> such that:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * (this.charAt(<i>k</i>) == ch) && (<i>k</i> &lt;= fromIndex)
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * is true. For other values of <code>ch</code>, it is the
jaroslav@49:      * largest value <i>k</i> such that:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * (this.codePointAt(<i>k</i>) == ch) && (<i>k</i> &lt;= fromIndex)
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * is true. In either case, if no such character occurs in this
jaroslav@49:      * string at or before position <code>fromIndex</code>, then
jaroslav@49:      * <code>-1</code> is returned.
jaroslav@49:      *
jaroslav@49:      * <p>All indices are specified in <code>char</code> values
jaroslav@49:      * (Unicode code units).
jaroslav@49:      *
jaroslav@49:      * @param   ch          a character (Unicode code point).
jaroslav@49:      * @param   fromIndex   the index to start the search from. There is no
jaroslav@49:      *          restriction on the value of <code>fromIndex</code>. If it is
jaroslav@49:      *          greater than or equal to the length of this string, it has
jaroslav@49:      *          the same effect as if it were equal to one less than the
jaroslav@49:      *          length of this string: this entire string may be searched.
jaroslav@49:      *          If it is negative, it has the same effect as if it were -1:
jaroslav@49:      *          -1 is returned.
jaroslav@49:      * @return  the index of the last occurrence of the character in the
jaroslav@49:      *          character sequence represented by this object that is less
jaroslav@49:      *          than or equal to <code>fromIndex</code>, or <code>-1</code>
jaroslav@49:      *          if the character does not occur before that point.
jaroslav@49:      */
jaroslav@249:     @JavaScriptBody(args = { "self", "ch", "from" }, body = 
jaroslav@249:         "if (typeof ch === 'number') ch = String.fromCharCode(ch);\n" +
jaroslav@249:         "return self.toString().lastIndexOf(ch, from);"
jaroslav@249:     )
jaroslav@49:     public int lastIndexOf(int ch, int fromIndex) {
jaroslav@49:         if (ch < Character.MIN_SUPPLEMENTARY_CODE_POINT) {
jaroslav@49:             // handle most cases here (ch is a BMP code point or a
jaroslav@49:             // negative value (invalid code point))
jaroslav@241:             final char[] value = this.toCharArray();
jaroslav@241:             final int offset = this.offset();
jaroslav@241:             int i = offset + Math.min(fromIndex, length() - 1);
jaroslav@49:             for (; i >= offset ; i--) {
jaroslav@49:                 if (value[i] == ch) {
jaroslav@49:                     return i - offset;
jaroslav@49:                 }
jaroslav@49:             }
jaroslav@49:             return -1;
jaroslav@49:         } else {
jaroslav@49:             return lastIndexOfSupplementary(ch, fromIndex);
jaroslav@49:         }
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Handles (rare) calls of lastIndexOf with a supplementary character.
jaroslav@49:      */
jaroslav@49:     private int lastIndexOfSupplementary(int ch, int fromIndex) {
jaroslav@49:         if (Character.isValidCodePoint(ch)) {
jaroslav@241:             final char[] value = this.toCharArray();
jaroslav@241:             final int offset = this.offset();
jaroslav@49:             char hi = Character.highSurrogate(ch);
jaroslav@49:             char lo = Character.lowSurrogate(ch);
jaroslav@241:             int i = offset + Math.min(fromIndex, length() - 2);
jaroslav@49:             for (; i >= offset; i--) {
jaroslav@49:                 if (value[i] == hi && value[i+1] == lo) {
jaroslav@49:                     return i - offset;
jaroslav@49:                 }
jaroslav@49:             }
jaroslav@49:         }
jaroslav@49:         return -1;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the index within this string of the first occurrence of the
jaroslav@49:      * specified substring.
jaroslav@49:      *
jaroslav@49:      * <p>The returned index is the smallest value <i>k</i> for which:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * this.startsWith(str, <i>k</i>)
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * If no such value of <i>k</i> exists, then {@code -1} is returned.
jaroslav@49:      *
jaroslav@49:      * @param   str   the substring to search for.
jaroslav@49:      * @return  the index of the first occurrence of the specified substring,
jaroslav@49:      *          or {@code -1} if there is no such occurrence.
jaroslav@49:      */
jaroslav@49:     public int indexOf(String str) {
jaroslav@49:         return indexOf(str, 0);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the index within this string of the first occurrence of the
jaroslav@49:      * specified substring, starting at the specified index.
jaroslav@49:      *
jaroslav@49:      * <p>The returned index is the smallest value <i>k</i> for which:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * <i>k</i> &gt;= fromIndex && this.startsWith(str, <i>k</i>)
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * If no such value of <i>k</i> exists, then {@code -1} is returned.
jaroslav@49:      *
jaroslav@49:      * @param   str         the substring to search for.
jaroslav@49:      * @param   fromIndex   the index from which to start the search.
jaroslav@49:      * @return  the index of the first occurrence of the specified substring,
jaroslav@49:      *          starting at the specified index,
jaroslav@49:      *          or {@code -1} if there is no such occurrence.
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = { "self", "str", "fromIndex" }, body =
jaroslav@264:         "return self.toString().indexOf(str.toString(), fromIndex);"
jaroslav@240:     )
jaroslav@403:     public native int indexOf(String str, int fromIndex);
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the index within this string of the last occurrence of the
jaroslav@49:      * specified substring.  The last occurrence of the empty string ""
jaroslav@49:      * is considered to occur at the index value {@code this.length()}.
jaroslav@49:      *
jaroslav@49:      * <p>The returned index is the largest value <i>k</i> for which:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * this.startsWith(str, <i>k</i>)
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * If no such value of <i>k</i> exists, then {@code -1} is returned.
jaroslav@49:      *
jaroslav@49:      * @param   str   the substring to search for.
jaroslav@49:      * @return  the index of the last occurrence of the specified substring,
jaroslav@49:      *          or {@code -1} if there is no such occurrence.
jaroslav@49:      */
jaroslav@49:     public int lastIndexOf(String str) {
jaroslav@241:         return lastIndexOf(str, length());
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the index within this string of the last occurrence of the
jaroslav@49:      * specified substring, searching backward starting at the specified index.
jaroslav@49:      *
jaroslav@49:      * <p>The returned index is the largest value <i>k</i> for which:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * <i>k</i> &lt;= fromIndex && this.startsWith(str, <i>k</i>)
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      * If no such value of <i>k</i> exists, then {@code -1} is returned.
jaroslav@49:      *
jaroslav@49:      * @param   str         the substring to search for.
jaroslav@49:      * @param   fromIndex   the index to start the search from.
jaroslav@49:      * @return  the index of the last occurrence of the specified substring,
jaroslav@49:      *          searching backward from the specified index,
jaroslav@49:      *          or {@code -1} if there is no such occurrence.
jaroslav@49:      */
jaroslav@249:     @JavaScriptBody(args = { "self", "s", "from" }, body = 
jaroslav@249:         "return self.toString().lastIndexOf(s.toString(), from);"
jaroslav@249:     )
jaroslav@49:     public int lastIndexOf(String str, int fromIndex) {
jaroslav@241:         return lastIndexOf(toCharArray(), offset(), length(), str.toCharArray(), str.offset(), str.length(), fromIndex);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Code shared by String and StringBuffer to do searches. The
jaroslav@49:      * source is the character array being searched, and the target
jaroslav@49:      * is the string being searched for.
jaroslav@49:      *
jaroslav@49:      * @param   source       the characters being searched.
jaroslav@49:      * @param   sourceOffset offset of the source string.
jaroslav@49:      * @param   sourceCount  count of the source string.
jaroslav@49:      * @param   target       the characters being searched for.
jaroslav@49:      * @param   targetOffset offset of the target string.
jaroslav@49:      * @param   targetCount  count of the target string.
jaroslav@49:      * @param   fromIndex    the index to begin searching from.
jaroslav@49:      */
jaroslav@49:     static int lastIndexOf(char[] source, int sourceOffset, int sourceCount,
jaroslav@49:                            char[] target, int targetOffset, int targetCount,
jaroslav@49:                            int fromIndex) {
jaroslav@49:         /*
jaroslav@49:          * Check arguments; return immediately where possible. For
jaroslav@49:          * consistency, don't check for null str.
jaroslav@49:          */
jaroslav@49:         int rightIndex = sourceCount - targetCount;
jaroslav@49:         if (fromIndex < 0) {
jaroslav@49:             return -1;
jaroslav@49:         }
jaroslav@49:         if (fromIndex > rightIndex) {
jaroslav@49:             fromIndex = rightIndex;
jaroslav@49:         }
jaroslav@49:         /* Empty string always matches. */
jaroslav@49:         if (targetCount == 0) {
jaroslav@49:             return fromIndex;
jaroslav@49:         }
jaroslav@49: 
jaroslav@49:         int strLastIndex = targetOffset + targetCount - 1;
jaroslav@49:         char strLastChar = target[strLastIndex];
jaroslav@49:         int min = sourceOffset + targetCount - 1;
jaroslav@49:         int i = min + fromIndex;
jaroslav@49: 
jaroslav@49:     startSearchForLastChar:
jaroslav@49:         while (true) {
jaroslav@49:             while (i >= min && source[i] != strLastChar) {
jaroslav@49:                 i--;
jaroslav@49:             }
jaroslav@49:             if (i < min) {
jaroslav@49:                 return -1;
jaroslav@49:             }
jaroslav@49:             int j = i - 1;
jaroslav@49:             int start = j - (targetCount - 1);
jaroslav@49:             int k = strLastIndex - 1;
jaroslav@49: 
jaroslav@49:             while (j > start) {
jaroslav@49:                 if (source[j--] != target[k--]) {
jaroslav@49:                     i--;
jaroslav@49:                     continue startSearchForLastChar;
jaroslav@49:                 }
jaroslav@49:             }
jaroslav@49:             return start - sourceOffset + 1;
jaroslav@49:         }
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns a new string that is a substring of this string. The
jaroslav@49:      * substring begins with the character at the specified index and
jaroslav@49:      * extends to the end of this string. <p>
jaroslav@49:      * Examples:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * "unhappy".substring(2) returns "happy"
jaroslav@49:      * "Harbison".substring(3) returns "bison"
jaroslav@49:      * "emptiness".substring(9) returns "" (an empty string)
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      *
jaroslav@49:      * @param      beginIndex   the beginning index, inclusive.
jaroslav@49:      * @return     the specified substring.
jaroslav@49:      * @exception  IndexOutOfBoundsException  if
jaroslav@49:      *             <code>beginIndex</code> is negative or larger than the
jaroslav@49:      *             length of this <code>String</code> object.
jaroslav@49:      */
jaroslav@49:     public String substring(int beginIndex) {
jaroslav@241:         return substring(beginIndex, length());
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns a new string that is a substring of this string. The
jaroslav@49:      * substring begins at the specified <code>beginIndex</code> and
jaroslav@49:      * extends to the character at index <code>endIndex - 1</code>.
jaroslav@49:      * Thus the length of the substring is <code>endIndex-beginIndex</code>.
jaroslav@49:      * <p>
jaroslav@49:      * Examples:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * "hamburger".substring(4, 8) returns "urge"
jaroslav@49:      * "smiles".substring(1, 5) returns "mile"
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      *
jaroslav@49:      * @param      beginIndex   the beginning index, inclusive.
jaroslav@49:      * @param      endIndex     the ending index, exclusive.
jaroslav@49:      * @return     the specified substring.
jaroslav@49:      * @exception  IndexOutOfBoundsException  if the
jaroslav@49:      *             <code>beginIndex</code> is negative, or
jaroslav@49:      *             <code>endIndex</code> is larger than the length of
jaroslav@49:      *             this <code>String</code> object, or
jaroslav@49:      *             <code>beginIndex</code> is larger than
jaroslav@49:      *             <code>endIndex</code>.
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = { "self", "beginIndex", "endIndex" }, body = 
jaroslav@240:         "return self.toString().substring(beginIndex, endIndex);"
jaroslav@240:     )
jaroslav@49:     public String substring(int beginIndex, int endIndex) {
jaroslav@49:         if (beginIndex < 0) {
jaroslav@49:             throw new StringIndexOutOfBoundsException(beginIndex);
jaroslav@49:         }
jaroslav@241:         if (endIndex > length()) {
jaroslav@49:             throw new StringIndexOutOfBoundsException(endIndex);
jaroslav@49:         }
jaroslav@49:         if (beginIndex > endIndex) {
jaroslav@49:             throw new StringIndexOutOfBoundsException(endIndex - beginIndex);
jaroslav@49:         }
jaroslav@241:         return ((beginIndex == 0) && (endIndex == length())) ? this :
jaroslav@241:             new String(toCharArray(), offset() + beginIndex, endIndex - beginIndex);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns a new character sequence that is a subsequence of this sequence.
jaroslav@49:      *
jaroslav@49:      * <p> An invocation of this method of the form
jaroslav@49:      *
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * str.subSequence(begin,&nbsp;end)</pre></blockquote>
jaroslav@49:      *
jaroslav@49:      * behaves in exactly the same way as the invocation
jaroslav@49:      *
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * str.substring(begin,&nbsp;end)</pre></blockquote>
jaroslav@49:      *
jaroslav@49:      * This method is defined so that the <tt>String</tt> class can implement
jaroslav@49:      * the {@link CharSequence} interface. </p>
jaroslav@49:      *
jaroslav@49:      * @param      beginIndex   the begin index, inclusive.
jaroslav@49:      * @param      endIndex     the end index, exclusive.
jaroslav@49:      * @return     the specified subsequence.
jaroslav@49:      *
jaroslav@49:      * @throws  IndexOutOfBoundsException
jaroslav@49:      *          if <tt>beginIndex</tt> or <tt>endIndex</tt> are negative,
jaroslav@49:      *          if <tt>endIndex</tt> is greater than <tt>length()</tt>,
jaroslav@49:      *          or if <tt>beginIndex</tt> is greater than <tt>startIndex</tt>
jaroslav@49:      *
jaroslav@49:      * @since 1.4
jaroslav@49:      * @spec JSR-51
jaroslav@49:      */
jaroslav@49:     public CharSequence subSequence(int beginIndex, int endIndex) {
jaroslav@49:         return this.substring(beginIndex, endIndex);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Concatenates the specified string to the end of this string.
jaroslav@49:      * <p>
jaroslav@49:      * If the length of the argument string is <code>0</code>, then this
jaroslav@49:      * <code>String</code> object is returned. Otherwise, a new
jaroslav@49:      * <code>String</code> object is created, representing a character
jaroslav@49:      * sequence that is the concatenation of the character sequence
jaroslav@49:      * represented by this <code>String</code> object and the character
jaroslav@49:      * sequence represented by the argument string.<p>
jaroslav@49:      * Examples:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * "cares".concat("s") returns "caress"
jaroslav@49:      * "to".concat("get").concat("her") returns "together"
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      *
jaroslav@49:      * @param   str   the <code>String</code> that is concatenated to the end
jaroslav@49:      *                of this <code>String</code>.
jaroslav@49:      * @return  a string that represents the concatenation of this object's
jaroslav@49:      *          characters followed by the string argument's characters.
jaroslav@49:      */
jaroslav@49:     public String concat(String str) {
jaroslav@49:         int otherLen = str.length();
jaroslav@49:         if (otherLen == 0) {
jaroslav@49:             return this;
jaroslav@49:         }
jaroslav@241:         char buf[] = new char[length() + otherLen];
jaroslav@241:         getChars(0, length(), buf, 0);
jaroslav@241:         str.getChars(0, otherLen, buf, length());
jaroslav@241:         return new String(buf, 0, length() + otherLen);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns a new string resulting from replacing all occurrences of
jaroslav@49:      * <code>oldChar</code> in this string with <code>newChar</code>.
jaroslav@49:      * <p>
jaroslav@49:      * If the character <code>oldChar</code> does not occur in the
jaroslav@49:      * character sequence represented by this <code>String</code> object,
jaroslav@49:      * then a reference to this <code>String</code> object is returned.
jaroslav@49:      * Otherwise, a new <code>String</code> object is created that
jaroslav@49:      * represents a character sequence identical to the character sequence
jaroslav@49:      * represented by this <code>String</code> object, except that every
jaroslav@49:      * occurrence of <code>oldChar</code> is replaced by an occurrence
jaroslav@49:      * of <code>newChar</code>.
jaroslav@49:      * <p>
jaroslav@49:      * Examples:
jaroslav@49:      * <blockquote><pre>
jaroslav@49:      * "mesquite in your cellar".replace('e', 'o')
jaroslav@49:      *         returns "mosquito in your collar"
jaroslav@49:      * "the war of baronets".replace('r', 'y')
jaroslav@49:      *         returns "the way of bayonets"
jaroslav@49:      * "sparring with a purple porpoise".replace('p', 't')
jaroslav@49:      *         returns "starring with a turtle tortoise"
jaroslav@49:      * "JonL".replace('q', 'x') returns "JonL" (no change)
jaroslav@49:      * </pre></blockquote>
jaroslav@49:      *
jaroslav@49:      * @param   oldChar   the old character.
jaroslav@49:      * @param   newChar   the new character.
jaroslav@49:      * @return  a string derived from this string by replacing every
jaroslav@49:      *          occurrence of <code>oldChar</code> with <code>newChar</code>.
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = { "self", "arg1", "arg2" }, body =
jaroslav@240:         "if (typeof arg1 === 'number') arg1 = String.fromCharCode(arg1);\n" +
jaroslav@240:         "if (typeof arg2 === 'number') arg2 = String.fromCharCode(arg2);\n" +
jaroslav@240:         "var s = self.toString();\n" +
jaroslav@240:         "for (;;) {\n" +
jaroslav@240:         "  var ret = s.replace(arg1, arg2);\n" +
jaroslav@240:         "  if (ret === s) {\n" +
jaroslav@240:         "    return ret;\n" +
jaroslav@240:         "  }\n" +
jaroslav@240:         "  s = ret;\n" +
jaroslav@240:         "}"
jaroslav@240:     )
jaroslav@49:     public String replace(char oldChar, char newChar) {
jaroslav@49:         if (oldChar != newChar) {
jaroslav@241:             int len = length();
jaroslav@49:             int i = -1;
jaroslav@241:             char[] val = toCharArray(); /* avoid getfield opcode */
jaroslav@241:             int off = offset();   /* avoid getfield opcode */
jaroslav@49: 
jaroslav@49:             while (++i < len) {
jaroslav@49:                 if (val[off + i] == oldChar) {
jaroslav@49:                     break;
jaroslav@49:                 }
jaroslav@49:             }
jaroslav@49:             if (i < len) {
jaroslav@49:                 char buf[] = new char[len];
jaroslav@49:                 for (int j = 0 ; j < i ; j++) {
jaroslav@49:                     buf[j] = val[off+j];
jaroslav@49:                 }
jaroslav@49:                 while (i < len) {
jaroslav@49:                     char c = val[off + i];
jaroslav@49:                     buf[i] = (c == oldChar) ? newChar : c;
jaroslav@49:                     i++;
jaroslav@49:                 }
jaroslav@179:                 return new String(buf, 0, len);
jaroslav@49:             }
jaroslav@49:         }
jaroslav@49:         return this;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Tells whether or not this string matches the given <a
jaroslav@49:      * href="../util/regex/Pattern.html#sum">regular expression</a>.
jaroslav@49:      *
jaroslav@49:      * <p> An invocation of this method of the form
jaroslav@49:      * <i>str</i><tt>.matches(</tt><i>regex</i><tt>)</tt> yields exactly the
jaroslav@49:      * same result as the expression
jaroslav@49:      *
jaroslav@49:      * <blockquote><tt> {@link java.util.regex.Pattern}.{@link
jaroslav@49:      * java.util.regex.Pattern#matches(String,CharSequence)
jaroslav@49:      * matches}(</tt><i>regex</i><tt>,</tt> <i>str</i><tt>)</tt></blockquote>
jaroslav@49:      *
jaroslav@49:      * @param   regex
jaroslav@49:      *          the regular expression to which this string is to be matched
jaroslav@49:      *
jaroslav@49:      * @return  <tt>true</tt> if, and only if, this string matches the
jaroslav@49:      *          given regular expression
jaroslav@49:      *
jaroslav@49:      * @throws  PatternSyntaxException
jaroslav@49:      *          if the regular expression's syntax is invalid
jaroslav@49:      *
jaroslav@49:      * @see java.util.regex.Pattern
jaroslav@49:      *
jaroslav@49:      * @since 1.4
jaroslav@49:      * @spec JSR-51
jaroslav@49:      */
jaroslav@326:     @JavaScriptBody(args = { "self", "regex" }, body = 
jaroslav@326:           "self = self.toString();\n"
jaroslav@326:         + "var re = new RegExp(regex.toString());\n"
jaroslav@326:         + "var r = re.exec(self);\n"
jaroslav@326:         + "return r != null && r.length > 0 && self.length == r[0].length;"
jaroslav@326:     )
jaroslav@49:     public boolean matches(String regex) {
jaroslav@64:         throw new UnsupportedOperationException();
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns true if and only if this string contains the specified
jaroslav@49:      * sequence of char values.
jaroslav@49:      *
jaroslav@49:      * @param s the sequence to search for
jaroslav@49:      * @return true if this string contains <code>s</code>, false otherwise
jaroslav@49:      * @throws NullPointerException if <code>s</code> is <code>null</code>
jaroslav@49:      * @since 1.5
jaroslav@49:      */
jaroslav@49:     public boolean contains(CharSequence s) {
jaroslav@49:         return indexOf(s.toString()) > -1;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Replaces the first substring of this string that matches the given <a
jaroslav@49:      * href="../util/regex/Pattern.html#sum">regular expression</a> with the
jaroslav@49:      * given replacement.
jaroslav@49:      *
jaroslav@49:      * <p> An invocation of this method of the form
jaroslav@49:      * <i>str</i><tt>.replaceFirst(</tt><i>regex</i><tt>,</tt> <i>repl</i><tt>)</tt>
jaroslav@49:      * yields exactly the same result as the expression
jaroslav@49:      *
jaroslav@49:      * <blockquote><tt>
jaroslav@49:      * {@link java.util.regex.Pattern}.{@link java.util.regex.Pattern#compile
jaroslav@49:      * compile}(</tt><i>regex</i><tt>).{@link
jaroslav@49:      * java.util.regex.Pattern#matcher(java.lang.CharSequence)
jaroslav@49:      * matcher}(</tt><i>str</i><tt>).{@link java.util.regex.Matcher#replaceFirst
jaroslav@49:      * replaceFirst}(</tt><i>repl</i><tt>)</tt></blockquote>
jaroslav@49:      *
jaroslav@49:      *<p>
jaroslav@49:      * Note that backslashes (<tt>\</tt>) and dollar signs (<tt>$</tt>) in the
jaroslav@49:      * replacement string may cause the results to be different than if it were
jaroslav@49:      * being treated as a literal replacement string; see
jaroslav@49:      * {@link java.util.regex.Matcher#replaceFirst}.
jaroslav@49:      * Use {@link java.util.regex.Matcher#quoteReplacement} to suppress the special
jaroslav@49:      * meaning of these characters, if desired.
jaroslav@49:      *
jaroslav@49:      * @param   regex
jaroslav@49:      *          the regular expression to which this string is to be matched
jaroslav@49:      * @param   replacement
jaroslav@49:      *          the string to be substituted for the first match
jaroslav@49:      *
jaroslav@49:      * @return  The resulting <tt>String</tt>
jaroslav@49:      *
jaroslav@49:      * @throws  PatternSyntaxException
jaroslav@49:      *          if the regular expression's syntax is invalid
jaroslav@49:      *
jaroslav@49:      * @see java.util.regex.Pattern
jaroslav@49:      *
jaroslav@49:      * @since 1.4
jaroslav@49:      * @spec JSR-51
jaroslav@49:      */
jaroslav@49:     public String replaceFirst(String regex, String replacement) {
jaroslav@64:         throw new UnsupportedOperationException();
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Replaces each substring of this string that matches the given <a
jaroslav@49:      * href="../util/regex/Pattern.html#sum">regular expression</a> with the
jaroslav@49:      * given replacement.
jaroslav@49:      *
jaroslav@49:      * <p> An invocation of this method of the form
jaroslav@49:      * <i>str</i><tt>.replaceAll(</tt><i>regex</i><tt>,</tt> <i>repl</i><tt>)</tt>
jaroslav@49:      * yields exactly the same result as the expression
jaroslav@49:      *
jaroslav@49:      * <blockquote><tt>
jaroslav@49:      * {@link java.util.regex.Pattern}.{@link java.util.regex.Pattern#compile
jaroslav@49:      * compile}(</tt><i>regex</i><tt>).{@link
jaroslav@49:      * java.util.regex.Pattern#matcher(java.lang.CharSequence)
jaroslav@49:      * matcher}(</tt><i>str</i><tt>).{@link java.util.regex.Matcher#replaceAll
jaroslav@49:      * replaceAll}(</tt><i>repl</i><tt>)</tt></blockquote>
jaroslav@49:      *
jaroslav@49:      *<p>
jaroslav@49:      * Note that backslashes (<tt>\</tt>) and dollar signs (<tt>$</tt>) in the
jaroslav@49:      * replacement string may cause the results to be different than if it were
jaroslav@49:      * being treated as a literal replacement string; see
jaroslav@49:      * {@link java.util.regex.Matcher#replaceAll Matcher.replaceAll}.
jaroslav@49:      * Use {@link java.util.regex.Matcher#quoteReplacement} to suppress the special
jaroslav@49:      * meaning of these characters, if desired.
jaroslav@49:      *
jaroslav@49:      * @param   regex
jaroslav@49:      *          the regular expression to which this string is to be matched
jaroslav@49:      * @param   replacement
jaroslav@49:      *          the string to be substituted for each match
jaroslav@49:      *
jaroslav@49:      * @return  The resulting <tt>String</tt>
jaroslav@49:      *
jaroslav@49:      * @throws  PatternSyntaxException
jaroslav@49:      *          if the regular expression's syntax is invalid
jaroslav@49:      *
jaroslav@49:      * @see java.util.regex.Pattern
jaroslav@49:      *
jaroslav@49:      * @since 1.4
jaroslav@49:      * @spec JSR-51
jaroslav@49:      */
jaroslav@49:     public String replaceAll(String regex, String replacement) {
jaroslav@64:         throw new UnsupportedOperationException();
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Replaces each substring of this string that matches the literal target
jaroslav@49:      * sequence with the specified literal replacement sequence. The
jaroslav@49:      * replacement proceeds from the beginning of the string to the end, for
jaroslav@49:      * example, replacing "aa" with "b" in the string "aaa" will result in
jaroslav@49:      * "ba" rather than "ab".
jaroslav@49:      *
jaroslav@49:      * @param  target The sequence of char values to be replaced
jaroslav@49:      * @param  replacement The replacement sequence of char values
jaroslav@49:      * @return  The resulting string
jaroslav@49:      * @throws NullPointerException if <code>target</code> or
jaroslav@49:      *         <code>replacement</code> is <code>null</code>.
jaroslav@49:      * @since 1.5
jaroslav@49:      */
jaroslav@49:     public String replace(CharSequence target, CharSequence replacement) {
jaroslav@64:         throw new UnsupportedOperationException("This one should be supported, but without dep on rest of regexp");
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Splits this string around matches of the given
jaroslav@49:      * <a href="../util/regex/Pattern.html#sum">regular expression</a>.
jaroslav@49:      *
jaroslav@49:      * <p> The array returned by this method contains each substring of this
jaroslav@49:      * string that is terminated by another substring that matches the given
jaroslav@49:      * expression or is terminated by the end of the string.  The substrings in
jaroslav@49:      * the array are in the order in which they occur in this string.  If the
jaroslav@49:      * expression does not match any part of the input then the resulting array
jaroslav@49:      * has just one element, namely this string.
jaroslav@49:      *
jaroslav@49:      * <p> The <tt>limit</tt> parameter controls the number of times the
jaroslav@49:      * pattern is applied and therefore affects the length of the resulting
jaroslav@49:      * array.  If the limit <i>n</i> is greater than zero then the pattern
jaroslav@49:      * will be applied at most <i>n</i>&nbsp;-&nbsp;1 times, the array's
jaroslav@49:      * length will be no greater than <i>n</i>, and the array's last entry
jaroslav@49:      * will contain all input beyond the last matched delimiter.  If <i>n</i>
jaroslav@49:      * is non-positive then the pattern will be applied as many times as
jaroslav@49:      * possible and the array can have any length.  If <i>n</i> is zero then
jaroslav@49:      * the pattern will be applied as many times as possible, the array can
jaroslav@49:      * have any length, and trailing empty strings will be discarded.
jaroslav@49:      *
jaroslav@49:      * <p> The string <tt>"boo:and:foo"</tt>, for example, yields the
jaroslav@49:      * following results with these parameters:
jaroslav@49:      *
jaroslav@49:      * <blockquote><table cellpadding=1 cellspacing=0 summary="Split example showing regex, limit, and result">
jaroslav@49:      * <tr>
jaroslav@49:      *     <th>Regex</th>
jaroslav@49:      *     <th>Limit</th>
jaroslav@49:      *     <th>Result</th>
jaroslav@49:      * </tr>
jaroslav@49:      * <tr><td align=center>:</td>
jaroslav@49:      *     <td align=center>2</td>
jaroslav@49:      *     <td><tt>{ "boo", "and:foo" }</tt></td></tr>
jaroslav@49:      * <tr><td align=center>:</td>
jaroslav@49:      *     <td align=center>5</td>
jaroslav@49:      *     <td><tt>{ "boo", "and", "foo" }</tt></td></tr>
jaroslav@49:      * <tr><td align=center>:</td>
jaroslav@49:      *     <td align=center>-2</td>
jaroslav@49:      *     <td><tt>{ "boo", "and", "foo" }</tt></td></tr>
jaroslav@49:      * <tr><td align=center>o</td>
jaroslav@49:      *     <td align=center>5</td>
jaroslav@49:      *     <td><tt>{ "b", "", ":and:f", "", "" }</tt></td></tr>
jaroslav@49:      * <tr><td align=center>o</td>
jaroslav@49:      *     <td align=center>-2</td>
jaroslav@49:      *     <td><tt>{ "b", "", ":and:f", "", "" }</tt></td></tr>
jaroslav@49:      * <tr><td align=center>o</td>
jaroslav@49:      *     <td align=center>0</td>
jaroslav@49:      *     <td><tt>{ "b", "", ":and:f" }</tt></td></tr>
jaroslav@49:      * </table></blockquote>
jaroslav@49:      *
jaroslav@49:      * <p> An invocation of this method of the form
jaroslav@49:      * <i>str.</i><tt>split(</tt><i>regex</i><tt>,</tt>&nbsp;<i>n</i><tt>)</tt>
jaroslav@49:      * yields the same result as the expression
jaroslav@49:      *
jaroslav@49:      * <blockquote>
jaroslav@49:      * {@link java.util.regex.Pattern}.{@link java.util.regex.Pattern#compile
jaroslav@49:      * compile}<tt>(</tt><i>regex</i><tt>)</tt>.{@link
jaroslav@49:      * java.util.regex.Pattern#split(java.lang.CharSequence,int)
jaroslav@49:      * split}<tt>(</tt><i>str</i><tt>,</tt>&nbsp;<i>n</i><tt>)</tt>
jaroslav@49:      * </blockquote>
jaroslav@49:      *
jaroslav@49:      *
jaroslav@49:      * @param  regex
jaroslav@49:      *         the delimiting regular expression
jaroslav@49:      *
jaroslav@49:      * @param  limit
jaroslav@49:      *         the result threshold, as described above
jaroslav@49:      *
jaroslav@49:      * @return  the array of strings computed by splitting this string
jaroslav@49:      *          around matches of the given regular expression
jaroslav@49:      *
jaroslav@49:      * @throws  PatternSyntaxException
jaroslav@49:      *          if the regular expression's syntax is invalid
jaroslav@49:      *
jaroslav@49:      * @see java.util.regex.Pattern
jaroslav@49:      *
jaroslav@49:      * @since 1.4
jaroslav@49:      * @spec JSR-51
jaroslav@49:      */
jaroslav@49:     public String[] split(String regex, int limit) {
jaroslav@64:         throw new UnsupportedOperationException("Needs regexp");
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Splits this string around matches of the given <a
jaroslav@49:      * href="../util/regex/Pattern.html#sum">regular expression</a>.
jaroslav@49:      *
jaroslav@49:      * <p> This method works as if by invoking the two-argument {@link
jaroslav@49:      * #split(String, int) split} method with the given expression and a limit
jaroslav@49:      * argument of zero.  Trailing empty strings are therefore not included in
jaroslav@49:      * the resulting array.
jaroslav@49:      *
jaroslav@49:      * <p> The string <tt>"boo:and:foo"</tt>, for example, yields the following
jaroslav@49:      * results with these expressions:
jaroslav@49:      *
jaroslav@49:      * <blockquote><table cellpadding=1 cellspacing=0 summary="Split examples showing regex and result">
jaroslav@49:      * <tr>
jaroslav@49:      *  <th>Regex</th>
jaroslav@49:      *  <th>Result</th>
jaroslav@49:      * </tr>
jaroslav@49:      * <tr><td align=center>:</td>
jaroslav@49:      *     <td><tt>{ "boo", "and", "foo" }</tt></td></tr>
jaroslav@49:      * <tr><td align=center>o</td>
jaroslav@49:      *     <td><tt>{ "b", "", ":and:f" }</tt></td></tr>
jaroslav@49:      * </table></blockquote>
jaroslav@49:      *
jaroslav@49:      *
jaroslav@49:      * @param  regex
jaroslav@49:      *         the delimiting regular expression
jaroslav@49:      *
jaroslav@49:      * @return  the array of strings computed by splitting this string
jaroslav@49:      *          around matches of the given regular expression
jaroslav@49:      *
jaroslav@49:      * @throws  PatternSyntaxException
jaroslav@49:      *          if the regular expression's syntax is invalid
jaroslav@49:      *
jaroslav@49:      * @see java.util.regex.Pattern
jaroslav@49:      *
jaroslav@49:      * @since 1.4
jaroslav@49:      * @spec JSR-51
jaroslav@49:      */
jaroslav@49:     public String[] split(String regex) {
jaroslav@49:         return split(regex, 0);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Converts all of the characters in this <code>String</code> to lower
jaroslav@49:      * case using the rules of the given <code>Locale</code>.  Case mapping is based
jaroslav@49:      * on the Unicode Standard version specified by the {@link java.lang.Character Character}
jaroslav@49:      * class. Since case mappings are not always 1:1 char mappings, the resulting
jaroslav@49:      * <code>String</code> may be a different length than the original <code>String</code>.
jaroslav@49:      * <p>
jaroslav@49:      * Examples of lowercase  mappings are in the following table:
jaroslav@49:      * <table border="1" summary="Lowercase mapping examples showing language code of locale, upper case, lower case, and description">
jaroslav@49:      * <tr>
jaroslav@49:      *   <th>Language Code of Locale</th>
jaroslav@49:      *   <th>Upper Case</th>
jaroslav@49:      *   <th>Lower Case</th>
jaroslav@49:      *   <th>Description</th>
jaroslav@49:      * </tr>
jaroslav@49:      * <tr>
jaroslav@49:      *   <td>tr (Turkish)</td>
jaroslav@49:      *   <td>&#92;u0130</td>
jaroslav@49:      *   <td>&#92;u0069</td>
jaroslav@49:      *   <td>capital letter I with dot above -&gt; small letter i</td>
jaroslav@49:      * </tr>
jaroslav@49:      * <tr>
jaroslav@49:      *   <td>tr (Turkish)</td>
jaroslav@49:      *   <td>&#92;u0049</td>
jaroslav@49:      *   <td>&#92;u0131</td>
jaroslav@49:      *   <td>capital letter I -&gt; small letter dotless i </td>
jaroslav@49:      * </tr>
jaroslav@49:      * <tr>
jaroslav@49:      *   <td>(all)</td>
jaroslav@49:      *   <td>French Fries</td>
jaroslav@49:      *   <td>french fries</td>
jaroslav@49:      *   <td>lowercased all chars in String</td>
jaroslav@49:      * </tr>
jaroslav@49:      * <tr>
jaroslav@49:      *   <td>(all)</td>
jaroslav@49:      *   <td><img src="doc-files/capiota.gif" alt="capiota"><img src="doc-files/capchi.gif" alt="capchi">
jaroslav@49:      *       <img src="doc-files/captheta.gif" alt="captheta"><img src="doc-files/capupsil.gif" alt="capupsil">
jaroslav@49:      *       <img src="doc-files/capsigma.gif" alt="capsigma"></td>
jaroslav@49:      *   <td><img src="doc-files/iota.gif" alt="iota"><img src="doc-files/chi.gif" alt="chi">
jaroslav@49:      *       <img src="doc-files/theta.gif" alt="theta"><img src="doc-files/upsilon.gif" alt="upsilon">
jaroslav@49:      *       <img src="doc-files/sigma1.gif" alt="sigma"></td>
jaroslav@49:      *   <td>lowercased all chars in String</td>
jaroslav@49:      * </tr>
jaroslav@49:      * </table>
jaroslav@49:      *
jaroslav@49:      * @param locale use the case transformation rules for this locale
jaroslav@49:      * @return the <code>String</code>, converted to lowercase.
jaroslav@49:      * @see     java.lang.String#toLowerCase()
jaroslav@49:      * @see     java.lang.String#toUpperCase()
jaroslav@49:      * @see     java.lang.String#toUpperCase(Locale)
jaroslav@49:      * @since   1.1
jaroslav@49:      */
jaroslav@61: //    public String toLowerCase(Locale locale) {
jaroslav@61: //        if (locale == null) {
jaroslav@61: //            throw new NullPointerException();
jaroslav@61: //        }
jaroslav@61: //
jaroslav@61: //        int     firstUpper;
jaroslav@61: //
jaroslav@61: //        /* Now check if there are any characters that need to be changed. */
jaroslav@61: //        scan: {
jaroslav@61: //            for (firstUpper = 0 ; firstUpper < count; ) {
jaroslav@61: //                char c = value[offset+firstUpper];
jaroslav@61: //                if ((c >= Character.MIN_HIGH_SURROGATE) &&
jaroslav@61: //                    (c <= Character.MAX_HIGH_SURROGATE)) {
jaroslav@61: //                    int supplChar = codePointAt(firstUpper);
jaroslav@61: //                    if (supplChar != Character.toLowerCase(supplChar)) {
jaroslav@61: //                        break scan;
jaroslav@61: //                    }
jaroslav@61: //                    firstUpper += Character.charCount(supplChar);
jaroslav@61: //                } else {
jaroslav@61: //                    if (c != Character.toLowerCase(c)) {
jaroslav@61: //                        break scan;
jaroslav@61: //                    }
jaroslav@61: //                    firstUpper++;
jaroslav@61: //                }
jaroslav@61: //            }
jaroslav@61: //            return this;
jaroslav@61: //        }
jaroslav@61: //
jaroslav@61: //        char[]  result = new char[count];
jaroslav@61: //        int     resultOffset = 0;  /* result may grow, so i+resultOffset
jaroslav@61: //                                    * is the write location in result */
jaroslav@61: //
jaroslav@61: //        /* Just copy the first few lowerCase characters. */
jaroslav@72: //        arraycopy(value, offset, result, 0, firstUpper);
jaroslav@61: //
jaroslav@61: //        String lang = locale.getLanguage();
jaroslav@61: //        boolean localeDependent =
jaroslav@61: //            (lang == "tr" || lang == "az" || lang == "lt");
jaroslav@61: //        char[] lowerCharArray;
jaroslav@61: //        int lowerChar;
jaroslav@61: //        int srcChar;
jaroslav@61: //        int srcCount;
jaroslav@61: //        for (int i = firstUpper; i < count; i += srcCount) {
jaroslav@61: //            srcChar = (int)value[offset+i];
jaroslav@61: //            if ((char)srcChar >= Character.MIN_HIGH_SURROGATE &&
jaroslav@61: //                (char)srcChar <= Character.MAX_HIGH_SURROGATE) {
jaroslav@61: //                srcChar = codePointAt(i);
jaroslav@61: //                srcCount = Character.charCount(srcChar);
jaroslav@61: //            } else {
jaroslav@61: //                srcCount = 1;
jaroslav@61: //            }
jaroslav@61: //            if (localeDependent || srcChar == '\u03A3') { // GREEK CAPITAL LETTER SIGMA
jaroslav@61: //                lowerChar = ConditionalSpecialCasing.toLowerCaseEx(this, i, locale);
jaroslav@61: //            } else if (srcChar == '\u0130') { // LATIN CAPITAL LETTER I DOT
jaroslav@61: //                lowerChar = Character.ERROR;
jaroslav@61: //            } else {
jaroslav@61: //                lowerChar = Character.toLowerCase(srcChar);
jaroslav@61: //            }
jaroslav@61: //            if ((lowerChar == Character.ERROR) ||
jaroslav@61: //                (lowerChar >= Character.MIN_SUPPLEMENTARY_CODE_POINT)) {
jaroslav@61: //                if (lowerChar == Character.ERROR) {
jaroslav@61: //                     if (!localeDependent && srcChar == '\u0130') {
jaroslav@61: //                         lowerCharArray =
jaroslav@61: //                             ConditionalSpecialCasing.toLowerCaseCharArray(this, i, Locale.ENGLISH);
jaroslav@61: //                     } else {
jaroslav@61: //                        lowerCharArray =
jaroslav@61: //                            ConditionalSpecialCasing.toLowerCaseCharArray(this, i, locale);
jaroslav@61: //                     }
jaroslav@61: //                } else if (srcCount == 2) {
jaroslav@61: //                    resultOffset += Character.toChars(lowerChar, result, i + resultOffset) - srcCount;
jaroslav@61: //                    continue;
jaroslav@61: //                } else {
jaroslav@61: //                    lowerCharArray = Character.toChars(lowerChar);
jaroslav@61: //                }
jaroslav@61: //
jaroslav@61: //                /* Grow result if needed */
jaroslav@61: //                int mapLen = lowerCharArray.length;
jaroslav@61: //                if (mapLen > srcCount) {
jaroslav@61: //                    char[] result2 = new char[result.length + mapLen - srcCount];
jaroslav@72: //                    arraycopy(result, 0, result2, 0,
jaroslav@61: //                        i + resultOffset);
jaroslav@61: //                    result = result2;
jaroslav@61: //                }
jaroslav@61: //                for (int x=0; x<mapLen; ++x) {
jaroslav@61: //                    result[i+resultOffset+x] = lowerCharArray[x];
jaroslav@61: //                }
jaroslav@61: //                resultOffset += (mapLen - srcCount);
jaroslav@61: //            } else {
jaroslav@61: //                result[i+resultOffset] = (char)lowerChar;
jaroslav@61: //            }
jaroslav@61: //        }
jaroslav@61: //        return new String(0, count+resultOffset, result);
jaroslav@61: //    }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Converts all of the characters in this <code>String</code> to lower
jaroslav@49:      * case using the rules of the default locale. This is equivalent to calling
jaroslav@49:      * <code>toLowerCase(Locale.getDefault())</code>.
jaroslav@49:      * <p>
jaroslav@49:      * <b>Note:</b> This method is locale sensitive, and may produce unexpected
jaroslav@49:      * results if used for strings that are intended to be interpreted locale
jaroslav@49:      * independently.
jaroslav@49:      * Examples are programming language identifiers, protocol keys, and HTML
jaroslav@49:      * tags.
jaroslav@49:      * For instance, <code>"TITLE".toLowerCase()</code> in a Turkish locale
jaroslav@49:      * returns <code>"t\u005Cu0131tle"</code>, where '\u005Cu0131' is the
jaroslav@49:      * LATIN SMALL LETTER DOTLESS I character.
jaroslav@49:      * To obtain correct results for locale insensitive strings, use
jaroslav@49:      * <code>toLowerCase(Locale.ENGLISH)</code>.
jaroslav@49:      * <p>
jaroslav@49:      * @return  the <code>String</code>, converted to lowercase.
jaroslav@49:      * @see     java.lang.String#toLowerCase(Locale)
jaroslav@49:      */
jaroslav@326:     @JavaScriptBody(args = "self", body = "return self.toLowerCase();")
jaroslav@49:     public String toLowerCase() {
jaroslav@64:         throw new UnsupportedOperationException("Should be supported but without connection to locale");
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Converts all of the characters in this <code>String</code> to upper
jaroslav@49:      * case using the rules of the given <code>Locale</code>. Case mapping is based
jaroslav@49:      * on the Unicode Standard version specified by the {@link java.lang.Character Character}
jaroslav@49:      * class. Since case mappings are not always 1:1 char mappings, the resulting
jaroslav@49:      * <code>String</code> may be a different length than the original <code>String</code>.
jaroslav@49:      * <p>
jaroslav@49:      * Examples of locale-sensitive and 1:M case mappings are in the following table.
jaroslav@49:      * <p>
jaroslav@49:      * <table border="1" summary="Examples of locale-sensitive and 1:M case mappings. Shows Language code of locale, lower case, upper case, and description.">
jaroslav@49:      * <tr>
jaroslav@49:      *   <th>Language Code of Locale</th>
jaroslav@49:      *   <th>Lower Case</th>
jaroslav@49:      *   <th>Upper Case</th>
jaroslav@49:      *   <th>Description</th>
jaroslav@49:      * </tr>
jaroslav@49:      * <tr>
jaroslav@49:      *   <td>tr (Turkish)</td>
jaroslav@49:      *   <td>&#92;u0069</td>
jaroslav@49:      *   <td>&#92;u0130</td>
jaroslav@49:      *   <td>small letter i -&gt; capital letter I with dot above</td>
jaroslav@49:      * </tr>
jaroslav@49:      * <tr>
jaroslav@49:      *   <td>tr (Turkish)</td>
jaroslav@49:      *   <td>&#92;u0131</td>
jaroslav@49:      *   <td>&#92;u0049</td>
jaroslav@49:      *   <td>small letter dotless i -&gt; capital letter I</td>
jaroslav@49:      * </tr>
jaroslav@49:      * <tr>
jaroslav@49:      *   <td>(all)</td>
jaroslav@49:      *   <td>&#92;u00df</td>
jaroslav@49:      *   <td>&#92;u0053 &#92;u0053</td>
jaroslav@49:      *   <td>small letter sharp s -&gt; two letters: SS</td>
jaroslav@49:      * </tr>
jaroslav@49:      * <tr>
jaroslav@49:      *   <td>(all)</td>
jaroslav@49:      *   <td>Fahrvergn&uuml;gen</td>
jaroslav@49:      *   <td>FAHRVERGN&Uuml;GEN</td>
jaroslav@49:      *   <td></td>
jaroslav@49:      * </tr>
jaroslav@49:      * </table>
jaroslav@49:      * @param locale use the case transformation rules for this locale
jaroslav@49:      * @return the <code>String</code>, converted to uppercase.
jaroslav@49:      * @see     java.lang.String#toUpperCase()
jaroslav@49:      * @see     java.lang.String#toLowerCase()
jaroslav@49:      * @see     java.lang.String#toLowerCase(Locale)
jaroslav@49:      * @since   1.1
jaroslav@49:      */
jaroslav@61:     /* not for javascript 
jaroslav@49:     public String toUpperCase(Locale locale) {
jaroslav@49:         if (locale == null) {
jaroslav@49:             throw new NullPointerException();
jaroslav@49:         }
jaroslav@49: 
jaroslav@49:         int     firstLower;
jaroslav@49: 
jaroslav@61:         // Now check if there are any characters that need to be changed. 
jaroslav@49:         scan: {
jaroslav@49:             for (firstLower = 0 ; firstLower < count; ) {
jaroslav@49:                 int c = (int)value[offset+firstLower];
jaroslav@49:                 int srcCount;
jaroslav@49:                 if ((c >= Character.MIN_HIGH_SURROGATE) &&
jaroslav@49:                     (c <= Character.MAX_HIGH_SURROGATE)) {
jaroslav@49:                     c = codePointAt(firstLower);
jaroslav@49:                     srcCount = Character.charCount(c);
jaroslav@49:                 } else {
jaroslav@49:                     srcCount = 1;
jaroslav@49:                 }
jaroslav@49:                 int upperCaseChar = Character.toUpperCaseEx(c);
jaroslav@49:                 if ((upperCaseChar == Character.ERROR) ||
jaroslav@49:                     (c != upperCaseChar)) {
jaroslav@49:                     break scan;
jaroslav@49:                 }
jaroslav@49:                 firstLower += srcCount;
jaroslav@49:             }
jaroslav@49:             return this;
jaroslav@49:         }
jaroslav@49: 
jaroslav@61:         char[]  result       = new char[count]; /* may grow *
jaroslav@49:         int     resultOffset = 0;  /* result may grow, so i+resultOffset
jaroslav@61:                                     * is the write location in result *
jaroslav@49: 
jaroslav@61:         /* Just copy the first few upperCase characters. *
jaroslav@72:         arraycopy(value, offset, result, 0, firstLower);
jaroslav@49: 
jaroslav@49:         String lang = locale.getLanguage();
jaroslav@49:         boolean localeDependent =
jaroslav@49:             (lang == "tr" || lang == "az" || lang == "lt");
jaroslav@49:         char[] upperCharArray;
jaroslav@49:         int upperChar;
jaroslav@49:         int srcChar;
jaroslav@49:         int srcCount;
jaroslav@49:         for (int i = firstLower; i < count; i += srcCount) {
jaroslav@49:             srcChar = (int)value[offset+i];
jaroslav@49:             if ((char)srcChar >= Character.MIN_HIGH_SURROGATE &&
jaroslav@49:                 (char)srcChar <= Character.MAX_HIGH_SURROGATE) {
jaroslav@49:                 srcChar = codePointAt(i);
jaroslav@49:                 srcCount = Character.charCount(srcChar);
jaroslav@49:             } else {
jaroslav@49:                 srcCount = 1;
jaroslav@49:             }
jaroslav@49:             if (localeDependent) {
jaroslav@49:                 upperChar = ConditionalSpecialCasing.toUpperCaseEx(this, i, locale);
jaroslav@49:             } else {
jaroslav@49:                 upperChar = Character.toUpperCaseEx(srcChar);
jaroslav@49:             }
jaroslav@49:             if ((upperChar == Character.ERROR) ||
jaroslav@49:                 (upperChar >= Character.MIN_SUPPLEMENTARY_CODE_POINT)) {
jaroslav@49:                 if (upperChar == Character.ERROR) {
jaroslav@49:                     if (localeDependent) {
jaroslav@49:                         upperCharArray =
jaroslav@49:                             ConditionalSpecialCasing.toUpperCaseCharArray(this, i, locale);
jaroslav@49:                     } else {
jaroslav@49:                         upperCharArray = Character.toUpperCaseCharArray(srcChar);
jaroslav@49:                     }
jaroslav@49:                 } else if (srcCount == 2) {
jaroslav@49:                     resultOffset += Character.toChars(upperChar, result, i + resultOffset) - srcCount;
jaroslav@49:                     continue;
jaroslav@49:                 } else {
jaroslav@49:                     upperCharArray = Character.toChars(upperChar);
jaroslav@49:                 }
jaroslav@49: 
jaroslav@61:                 /* Grow result if needed *
jaroslav@49:                 int mapLen = upperCharArray.length;
jaroslav@49:                 if (mapLen > srcCount) {
jaroslav@49:                     char[] result2 = new char[result.length + mapLen - srcCount];
jaroslav@72:                     arraycopy(result, 0, result2, 0,
jaroslav@49:                         i + resultOffset);
jaroslav@49:                     result = result2;
jaroslav@49:                 }
jaroslav@49:                 for (int x=0; x<mapLen; ++x) {
jaroslav@49:                     result[i+resultOffset+x] = upperCharArray[x];
jaroslav@49:                 }
jaroslav@49:                 resultOffset += (mapLen - srcCount);
jaroslav@49:             } else {
jaroslav@49:                 result[i+resultOffset] = (char)upperChar;
jaroslav@49:             }
jaroslav@49:         }
jaroslav@49:         return new String(0, count+resultOffset, result);
jaroslav@49:     }
jaroslav@61:     */
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Converts all of the characters in this <code>String</code> to upper
jaroslav@49:      * case using the rules of the default locale. This method is equivalent to
jaroslav@49:      * <code>toUpperCase(Locale.getDefault())</code>.
jaroslav@49:      * <p>
jaroslav@49:      * <b>Note:</b> This method is locale sensitive, and may produce unexpected
jaroslav@49:      * results if used for strings that are intended to be interpreted locale
jaroslav@49:      * independently.
jaroslav@49:      * Examples are programming language identifiers, protocol keys, and HTML
jaroslav@49:      * tags.
jaroslav@49:      * For instance, <code>"title".toUpperCase()</code> in a Turkish locale
jaroslav@49:      * returns <code>"T\u005Cu0130TLE"</code>, where '\u005Cu0130' is the
jaroslav@49:      * LATIN CAPITAL LETTER I WITH DOT ABOVE character.
jaroslav@49:      * To obtain correct results for locale insensitive strings, use
jaroslav@49:      * <code>toUpperCase(Locale.ENGLISH)</code>.
jaroslav@49:      * <p>
jaroslav@49:      * @return  the <code>String</code>, converted to uppercase.
jaroslav@49:      * @see     java.lang.String#toUpperCase(Locale)
jaroslav@49:      */
jaroslav@326:     @JavaScriptBody(args = "self", body = "return self.toUpperCase();")
jaroslav@49:     public String toUpperCase() {
jaroslav@61:         throw new UnsupportedOperationException();
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns a copy of the string, with leading and trailing whitespace
jaroslav@49:      * omitted.
jaroslav@49:      * <p>
jaroslav@49:      * If this <code>String</code> object represents an empty character
jaroslav@49:      * sequence, or the first and last characters of character sequence
jaroslav@49:      * represented by this <code>String</code> object both have codes
jaroslav@49:      * greater than <code>'&#92;u0020'</code> (the space character), then a
jaroslav@49:      * reference to this <code>String</code> object is returned.
jaroslav@49:      * <p>
jaroslav@49:      * Otherwise, if there is no character with a code greater than
jaroslav@49:      * <code>'&#92;u0020'</code> in the string, then a new
jaroslav@49:      * <code>String</code> object representing an empty string is created
jaroslav@49:      * and returned.
jaroslav@49:      * <p>
jaroslav@49:      * Otherwise, let <i>k</i> be the index of the first character in the
jaroslav@49:      * string whose code is greater than <code>'&#92;u0020'</code>, and let
jaroslav@49:      * <i>m</i> be the index of the last character in the string whose code
jaroslav@49:      * is greater than <code>'&#92;u0020'</code>. A new <code>String</code>
jaroslav@49:      * object is created, representing the substring of this string that
jaroslav@49:      * begins with the character at index <i>k</i> and ends with the
jaroslav@49:      * character at index <i>m</i>-that is, the result of
jaroslav@49:      * <code>this.substring(<i>k</i>,&nbsp;<i>m</i>+1)</code>.
jaroslav@49:      * <p>
jaroslav@49:      * This method may be used to trim whitespace (as defined above) from
jaroslav@49:      * the beginning and end of a string.
jaroslav@49:      *
jaroslav@49:      * @return  A copy of this string with leading and trailing white
jaroslav@49:      *          space removed, or this string if it has no leading or
jaroslav@49:      *          trailing white space.
jaroslav@49:      */
jaroslav@49:     public String trim() {
jaroslav@241:         int len = length();
jaroslav@49:         int st = 0;
jaroslav@241:         int off = offset();      /* avoid getfield opcode */
jaroslav@241:         char[] val = toCharArray();    /* avoid getfield opcode */
jaroslav@49: 
jaroslav@49:         while ((st < len) && (val[off + st] <= ' ')) {
jaroslav@49:             st++;
jaroslav@49:         }
jaroslav@49:         while ((st < len) && (val[off + len - 1] <= ' ')) {
jaroslav@49:             len--;
jaroslav@49:         }
jaroslav@241:         return ((st > 0) || (len < length())) ? substring(st, len) : this;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * This object (which is already a string!) is itself returned.
jaroslav@49:      *
jaroslav@49:      * @return  the string itself.
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = "self", body = "return self.toString();")
jaroslav@49:     public String toString() {
jaroslav@49:         return this;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Converts this string to a new character array.
jaroslav@49:      *
jaroslav@49:      * @return  a newly allocated character array whose length is the length
jaroslav@49:      *          of this string and whose contents are initialized to contain
jaroslav@49:      *          the character sequence represented by this string.
jaroslav@49:      */
jaroslav@240:     @JavaScriptBody(args = "self", body = "return self.toString().split('');")
jaroslav@49:     public char[] toCharArray() {
jaroslav@241:         char result[] = new char[length()];
jaroslav@241:         getChars(0, length(), result, 0);
jaroslav@49:         return result;
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns a formatted string using the specified format string and
jaroslav@49:      * arguments.
jaroslav@49:      *
jaroslav@49:      * <p> The locale always used is the one returned by {@link
jaroslav@49:      * java.util.Locale#getDefault() Locale.getDefault()}.
jaroslav@49:      *
jaroslav@49:      * @param  format
jaroslav@49:      *         A <a href="../util/Formatter.html#syntax">format string</a>
jaroslav@49:      *
jaroslav@49:      * @param  args
jaroslav@49:      *         Arguments referenced by the format specifiers in the format
jaroslav@49:      *         string.  If there are more arguments than format specifiers, the
jaroslav@49:      *         extra arguments are ignored.  The number of arguments is
jaroslav@49:      *         variable and may be zero.  The maximum number of arguments is
jaroslav@49:      *         limited by the maximum dimension of a Java array as defined by
jaroslav@49:      *         <cite>The Java&trade; Virtual Machine Specification</cite>.
jaroslav@49:      *         The behaviour on a
jaroslav@49:      *         <tt>null</tt> argument depends on the <a
jaroslav@49:      *         href="../util/Formatter.html#syntax">conversion</a>.
jaroslav@49:      *
jaroslav@49:      * @throws  IllegalFormatException
jaroslav@49:      *          If a format string contains an illegal syntax, a format
jaroslav@49:      *          specifier that is incompatible with the given arguments,
jaroslav@49:      *          insufficient arguments given the format string, or other
jaroslav@49:      *          illegal conditions.  For specification of all possible
jaroslav@49:      *          formatting errors, see the <a
jaroslav@49:      *          href="../util/Formatter.html#detail">Details</a> section of the
jaroslav@49:      *          formatter class specification.
jaroslav@49:      *
jaroslav@49:      * @throws  NullPointerException
jaroslav@49:      *          If the <tt>format</tt> is <tt>null</tt>
jaroslav@49:      *
jaroslav@49:      * @return  A formatted string
jaroslav@49:      *
jaroslav@49:      * @see  java.util.Formatter
jaroslav@49:      * @since  1.5
jaroslav@49:      */
jaroslav@49:     public static String format(String format, Object ... args) {
jaroslav@64:         throw new UnsupportedOperationException();
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns a formatted string using the specified locale, format string,
jaroslav@49:      * and arguments.
jaroslav@49:      *
jaroslav@49:      * @param  l
jaroslav@49:      *         The {@linkplain java.util.Locale locale} to apply during
jaroslav@49:      *         formatting.  If <tt>l</tt> is <tt>null</tt> then no localization
jaroslav@49:      *         is applied.
jaroslav@49:      *
jaroslav@49:      * @param  format
jaroslav@49:      *         A <a href="../util/Formatter.html#syntax">format string</a>
jaroslav@49:      *
jaroslav@49:      * @param  args
jaroslav@49:      *         Arguments referenced by the format specifiers in the format
jaroslav@49:      *         string.  If there are more arguments than format specifiers, the
jaroslav@49:      *         extra arguments are ignored.  The number of arguments is
jaroslav@49:      *         variable and may be zero.  The maximum number of arguments is
jaroslav@49:      *         limited by the maximum dimension of a Java array as defined by
jaroslav@49:      *         <cite>The Java&trade; Virtual Machine Specification</cite>.
jaroslav@49:      *         The behaviour on a
jaroslav@49:      *         <tt>null</tt> argument depends on the <a
jaroslav@49:      *         href="../util/Formatter.html#syntax">conversion</a>.
jaroslav@49:      *
jaroslav@49:      * @throws  IllegalFormatException
jaroslav@49:      *          If a format string contains an illegal syntax, a format
jaroslav@49:      *          specifier that is incompatible with the given arguments,
jaroslav@49:      *          insufficient arguments given the format string, or other
jaroslav@49:      *          illegal conditions.  For specification of all possible
jaroslav@49:      *          formatting errors, see the <a
jaroslav@49:      *          href="../util/Formatter.html#detail">Details</a> section of the
jaroslav@49:      *          formatter class specification
jaroslav@49:      *
jaroslav@49:      * @throws  NullPointerException
jaroslav@49:      *          If the <tt>format</tt> is <tt>null</tt>
jaroslav@49:      *
jaroslav@49:      * @return  A formatted string
jaroslav@49:      *
jaroslav@49:      * @see  java.util.Formatter
jaroslav@49:      * @since  1.5
jaroslav@49:      */
jaroslav@61: //    public static String format(Locale l, String format, Object ... args) {
jaroslav@61: //        return new Formatter(l).format(format, args).toString();
jaroslav@61: //    }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the string representation of the <code>Object</code> argument.
jaroslav@49:      *
jaroslav@49:      * @param   obj   an <code>Object</code>.
jaroslav@49:      * @return  if the argument is <code>null</code>, then a string equal to
jaroslav@49:      *          <code>"null"</code>; otherwise, the value of
jaroslav@49:      *          <code>obj.toString()</code> is returned.
jaroslav@49:      * @see     java.lang.Object#toString()
jaroslav@49:      */
jaroslav@49:     public static String valueOf(Object obj) {
jaroslav@49:         return (obj == null) ? "null" : obj.toString();
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the string representation of the <code>char</code> array
jaroslav@49:      * argument. The contents of the character array are copied; subsequent
jaroslav@49:      * modification of the character array does not affect the newly
jaroslav@49:      * created string.
jaroslav@49:      *
jaroslav@49:      * @param   data   a <code>char</code> array.
jaroslav@49:      * @return  a newly allocated string representing the same sequence of
jaroslav@49:      *          characters contained in the character array argument.
jaroslav@49:      */
jaroslav@49:     public static String valueOf(char data[]) {
jaroslav@49:         return new String(data);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the string representation of a specific subarray of the
jaroslav@49:      * <code>char</code> array argument.
jaroslav@49:      * <p>
jaroslav@49:      * The <code>offset</code> argument is the index of the first
jaroslav@49:      * character of the subarray. The <code>count</code> argument
jaroslav@49:      * specifies the length of the subarray. The contents of the subarray
jaroslav@49:      * are copied; subsequent modification of the character array does not
jaroslav@49:      * affect the newly created string.
jaroslav@49:      *
jaroslav@49:      * @param   data     the character array.
jaroslav@49:      * @param   offset   the initial offset into the value of the
jaroslav@49:      *                  <code>String</code>.
jaroslav@49:      * @param   count    the length of the value of the <code>String</code>.
jaroslav@49:      * @return  a string representing the sequence of characters contained
jaroslav@49:      *          in the subarray of the character array argument.
jaroslav@49:      * @exception IndexOutOfBoundsException if <code>offset</code> is
jaroslav@49:      *          negative, or <code>count</code> is negative, or
jaroslav@49:      *          <code>offset+count</code> is larger than
jaroslav@49:      *          <code>data.length</code>.
jaroslav@49:      */
jaroslav@49:     public static String valueOf(char data[], int offset, int count) {
jaroslav@49:         return new String(data, offset, count);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns a String that represents the character sequence in the
jaroslav@49:      * array specified.
jaroslav@49:      *
jaroslav@49:      * @param   data     the character array.
jaroslav@49:      * @param   offset   initial offset of the subarray.
jaroslav@49:      * @param   count    length of the subarray.
jaroslav@49:      * @return  a <code>String</code> that contains the characters of the
jaroslav@49:      *          specified subarray of the character array.
jaroslav@49:      */
jaroslav@49:     public static String copyValueOf(char data[], int offset, int count) {
jaroslav@49:         // All public String constructors now copy the data.
jaroslav@49:         return new String(data, offset, count);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns a String that represents the character sequence in the
jaroslav@49:      * array specified.
jaroslav@49:      *
jaroslav@49:      * @param   data   the character array.
jaroslav@49:      * @return  a <code>String</code> that contains the characters of the
jaroslav@49:      *          character array.
jaroslav@49:      */
jaroslav@49:     public static String copyValueOf(char data[]) {
jaroslav@49:         return copyValueOf(data, 0, data.length);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the string representation of the <code>boolean</code> argument.
jaroslav@49:      *
jaroslav@49:      * @param   b   a <code>boolean</code>.
jaroslav@49:      * @return  if the argument is <code>true</code>, a string equal to
jaroslav@49:      *          <code>"true"</code> is returned; otherwise, a string equal to
jaroslav@49:      *          <code>"false"</code> is returned.
jaroslav@49:      */
jaroslav@49:     public static String valueOf(boolean b) {
jaroslav@49:         return b ? "true" : "false";
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the string representation of the <code>char</code>
jaroslav@49:      * argument.
jaroslav@49:      *
jaroslav@49:      * @param   c   a <code>char</code>.
jaroslav@49:      * @return  a string of length <code>1</code> containing
jaroslav@49:      *          as its single character the argument <code>c</code>.
jaroslav@49:      */
jaroslav@49:     public static String valueOf(char c) {
jaroslav@49:         char data[] = {c};
jaroslav@179:         return new String(data, 0, 1);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the string representation of the <code>int</code> argument.
jaroslav@49:      * <p>
jaroslav@49:      * The representation is exactly the one returned by the
jaroslav@49:      * <code>Integer.toString</code> method of one argument.
jaroslav@49:      *
jaroslav@49:      * @param   i   an <code>int</code>.
jaroslav@49:      * @return  a string representation of the <code>int</code> argument.
jaroslav@49:      * @see     java.lang.Integer#toString(int, int)
jaroslav@49:      */
jaroslav@49:     public static String valueOf(int i) {
jaroslav@49:         return Integer.toString(i);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the string representation of the <code>long</code> argument.
jaroslav@49:      * <p>
jaroslav@49:      * The representation is exactly the one returned by the
jaroslav@49:      * <code>Long.toString</code> method of one argument.
jaroslav@49:      *
jaroslav@49:      * @param   l   a <code>long</code>.
jaroslav@49:      * @return  a string representation of the <code>long</code> argument.
jaroslav@49:      * @see     java.lang.Long#toString(long)
jaroslav@49:      */
jaroslav@49:     public static String valueOf(long l) {
jaroslav@49:         return Long.toString(l);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the string representation of the <code>float</code> argument.
jaroslav@49:      * <p>
jaroslav@49:      * The representation is exactly the one returned by the
jaroslav@49:      * <code>Float.toString</code> method of one argument.
jaroslav@49:      *
jaroslav@49:      * @param   f   a <code>float</code>.
jaroslav@49:      * @return  a string representation of the <code>float</code> argument.
jaroslav@49:      * @see     java.lang.Float#toString(float)
jaroslav@49:      */
jaroslav@49:     public static String valueOf(float f) {
jaroslav@49:         return Float.toString(f);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns the string representation of the <code>double</code> argument.
jaroslav@49:      * <p>
jaroslav@49:      * The representation is exactly the one returned by the
jaroslav@49:      * <code>Double.toString</code> method of one argument.
jaroslav@49:      *
jaroslav@49:      * @param   d   a <code>double</code>.
jaroslav@49:      * @return  a  string representation of the <code>double</code> argument.
jaroslav@49:      * @see     java.lang.Double#toString(double)
jaroslav@49:      */
jaroslav@49:     public static String valueOf(double d) {
jaroslav@49:         return Double.toString(d);
jaroslav@49:     }
jaroslav@49: 
jaroslav@49:     /**
jaroslav@49:      * Returns a canonical representation for the string object.
jaroslav@49:      * <p>
jaroslav@49:      * A pool of strings, initially empty, is maintained privately by the
jaroslav@49:      * class <code>String</code>.
jaroslav@49:      * <p>
jaroslav@49:      * When the intern method is invoked, if the pool already contains a
jaroslav@49:      * string equal to this <code>String</code> object as determined by
jaroslav@49:      * the {@link #equals(Object)} method, then the string from the pool is
jaroslav@49:      * returned. Otherwise, this <code>String</code> object is added to the
jaroslav@49:      * pool and a reference to this <code>String</code> object is returned.
jaroslav@49:      * <p>
jaroslav@49:      * It follows that for any two strings <code>s</code> and <code>t</code>,
jaroslav@49:      * <code>s.intern()&nbsp;==&nbsp;t.intern()</code> is <code>true</code>
jaroslav@49:      * if and only if <code>s.equals(t)</code> is <code>true</code>.
jaroslav@49:      * <p>
jaroslav@49:      * All literal strings and string-valued constant expressions are
jaroslav@49:      * interned. String literals are defined in section 3.10.5 of the
jaroslav@49:      * <cite>The Java&trade; Language Specification</cite>.
jaroslav@49:      *
jaroslav@49:      * @return  a string that has the same contents as this string, but is
jaroslav@49:      *          guaranteed to be from a pool of unique strings.
jaroslav@49:      */
jaroslav@49:     public native String intern();
jaroslav@49: }