/*

  * Copyright 2007 Sun Microsystems, Inc.  All Rights Reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.  Sun designates this

  * particular file as subject to the "Classpath" exception as provided

  * by Sun in the LICENSE file that accompanied this code.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

  * CA 95054 USA or visit www.sun.com if you need additional information or

  * have any questions.

  */

 package org.apidesign.infra.ant;

 import java.io.ByteArrayInputStream;

 import java.io.File;

 import java.io.FileNotFoundException;

 import java.io.FileOutputStream;

 import java.io.FileWriter;

 import java.io.InputStream;

 import java.net.URL;

 import java.util.ArrayList;

 import java.util.Arrays;

 import java.util.List;

 import junit.framework.Test;

 import org.netbeans.junit.NbTestCase;

 import org.netbeans.junit.NbTestSuite;

 /**

  *

  * @author Jaroslav Tulach

  */

 public class GrepCopyTest extends NbTestCase {

     private static File workDir;

     public GrepCopyTest(String s) {

         super(s);

     }

     public static Test suite() {

         return new NbTestSuite(GrepCopyTest.class);

         //return new GrepCopyTest("testInXML");

     }

     @Override

     protected void setUp() throws Exception {

         clearWorkDir();

     }

     public void testMissingMethodInAnInterfaceIsDetected() throws Exception {

         String c1 =

             "package ahoj;\n" +

             "// BEGIN: xyz\n" +

             "public interface I {\n" +

             "// FINISH: xyz\n" +

             "  public void get();\n" +

             "}" +

             "";

         File src = createFile(1, "I.java", c1);

         String c2 =

             "@xyz@";

         File txt = createFile(2, "in.txt", c2);

         execute(1, 2, "-Dfile1=" + txt, "-Dinclude1=*.java");

         String r = readFile("xyz");

         assertEquals("public interface I {\n}\n", r);

     }

     public void testSpacesAtBeginingAreStripped() throws Exception {

         String c1 =

             "package ahoj;\n" +

             "// BEGIN: xyz\n" +

             "   public interface I {\n" +

             "     public void ahoj();\n" +

             "   }\n" +

             "// END: xyz\n" +

             "  public void get();\n" +

             "}" +

             "";

         File src = createFile(1, "I.java", c1);

         String c2 =

             "@xyz@";

         File txt = createFile(2, "in.txt", c2);

         execute(1, 2, "-Dfile1=" + txt, "-Dinclude1=*.java");

         String r = readFile("xyz");

         String result = "public interface I {\n" +

             "  public void ahoj();\n" +

             "}\n";

         assertEquals(result, r);

     }

     public void testReportUnpairedBracesAsError() throws Exception {

         String c1 =

             "package ahoj;\n" +

             "// BEGIN: xyz\n" +

             "   public interface I {\n" +

             "     public void ahoj();\n" +

             "// END: xyz\n" +

             "   }\n" +

             "  public void get();\n" +

             "}" +

             "";

         File src = createFile(1, "I.java", c1);

         String c2 =

             "@xyz@";

         File txt = createFile(2, "in.txt", c2);

         File out = createFile(3, "out.txt", "");

         out.delete();

         try {

             execute(1, 2, "-Dfile1=" + txt, "-Dfile2=" + out, "-Dinclude1=*.java");

         } catch (ExecuteUtils.ExecutionError ex) {

             // ok

             return;

         }

         fail("The execution of the script shall fail");

     }

     public void testIncludedTexts() throws Exception {

         String c1 =

             "package ahoj;\n" +

             "// BEGIN: clazz\n" +

             "public interface I {\n" +

             "  // BEGIN: method\n" +

             "  public void get();\n" +

             "  // END: method\n" +

             "}\n" +

             "// END: clazz\n" +

             "";

         File src = createFile(1, "I.java", c1);

         String c2 =

             "@clazz@";

         File txt = createFile(2, "in.txt", c2);

         execute(1, 2, "-Dfile1=" + txt, "-Dinclude1=*.java");

         String r = readFile("clazz");

         if (r.indexOf("BEGIN") >= 0) {

             fail("BEGIN is there: " + r);

         }

         if (r.indexOf("END") >= 0) {

             fail("END is there: " + r);

         }

         if (r.indexOf("interface I") < 0) {

             fail("Missing interface: " + r);

         }

         if (r.indexOf("void get()") < 0) {

             fail("Missing get: " + r);

         }

     }

     public void testIncludedTextsAmper() throws Exception {

         String c1 =

             "package ahoj;\n" +

             "public class C {\n" +

             "  // BEGIN: method\n" +

             "  public void change(int x) { x &= 10; }\n" +

             "  // END: method\n" +

             "}\n" +

             "";

         File src = createFile(1, "C.java", c1);

         String c2 =

             "@method@";

         File txt = createFile(2, "in.txt", c2);

         execute(1, 2, "-Dfile1=" + txt, "-Dinclude1=*.java");

         String r = readFile("method");

         if (r.indexOf("&=") < 0) {

             fail("No XML: " + r);

         }

         if (r.indexOf("&=") >= 0) {

             fail("No XML, we need &: " + r);

         }

     }

     public void testIncludedTextsAmperAndGenerics() throws Exception {

         String c1 =

 "package org.apidesign.api.security;\n" +

 "" +

 "import java.nio.ByteBuffer;\n" +

 "import java.util.ServiceLoader;\n" +

 "import org.apidesign.spi.security.Digestor;\n" +

 "\n" +

 "/** Simplified version of a Digest class that allows to compute a fingerprint\n" +

 " * for buffer of data.\n" +

 " *\n" +

 " * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>\n" +

 " */\n" +

 "// BEGIN: day.end.bridges.Digest\n" +

 "public final class Digest {\n" +

 "    private final DigestImplementation<?> impl;\n" +

 "    \n" +

 "    /** Factory method is better than constructor */\n" +

 "    private Digest(DigestImplementation<?> impl) {\n" +

 "        this.impl = impl;\n" +

 "    }\n" +

 "    \n" +

 "    /** Factory method to create digest for an algorithm.\n" +

 "     */\n" +

 "    public static Digest getInstance(String algorithm) {\n" +

 "        for (Digestor<?> digestor : ServiceLoader.load(Digestor.class)) {\n" +

 "            DigestImplementation<?> impl = \n" +

                 "DigestImplementation.create(digestor, algorithm);\n" +

 "            if (impl != null) {\n" +

 "                return new Digest(impl);\n" +

 "            }\n" +

 "        }\n" +

 "        throw new IllegalArgumentException(algorithm);\n" +

 "    }\n" +

 "      \n" +

 "    //\n" +

 "    // these methods are kept the same as in original MessageDigest,\n" +

 "    // but for simplicity choose just some from the original API\n" +

 "    //\n" +

 "    \n" +

 "    public byte[] digest(ByteBuffer bb) {\n" +

 "        return impl.digest(bb);\n" +

 "    }\n" +

 "}\n" +

 "// END: day.end.bridges.Digest\n";

         File src = createFile(1, "C.java", c1);

         String c2 =

             "@day.end.bridges.Digest@";

         File txt = createFile(2, "in.txt", c2);

         execute(1, 2, "-Dfile1=" + txt, "-Dinclude1=*.java");

         String r = readFile("day.end.bridges.Digest");

         if (r.indexOf("&=") >= 0) {

             fail("Wrong XML: " + r);

         }

         if (r.indexOf("&") > -1) {

             fail("Wrong XML, no &: " + r);

         }

     }

     public void testInXML() throws Exception {

         String c1 =

             "<!-- BEGIN: clazz -->\n" +

             "<interface name='I'/>\n" +

             "<!-- END: clazz -->\n" +

             "";

         File src = createFile(1, "I.xml", c1);

         String c2 =

             "@clazz@";

         File txt = createFile(2, "in.txt", c2);

         execute(1, 2, "-Dfile1=" + txt, "-Dinclude1=*.xml");

         String r = readFile("clazz");

         if (r.indexOf("BEGIN") >= 0) {

             fail("BEGIN is there: " + r);

         }

         if (r.indexOf("END") >= 0) {

             fail("END is there: " + r);

         }

         if (r.indexOf("<interface name='I'/>") < 0) {

             fail("Missing interface: " + r);

         }

     }

     public void testLongLineNotDetectedAsBeginsWithGen() throws Exception {

         String c1 =

 "package org.apidesign.api.security;\n" +

 "" +

 "import java.nio.ByteBuffer;\n" +

 "import java.util.ServiceLoader;\n" +

 "import org.apidesign.spi.security.Digestor;\n" +

 "\n" +

 "/** Simplified version of a Digest class that allows to compute a fingerprint\n" +

 "// BEGIN: x\n" +

 " * for buffer of data.\n" +

 "// END: x\n" +

 " *\n" +

 " * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>\n" +

 " */\n" +

 "// GEN-BEGIN: day.end.bridges.Digest\n" +

 "d;   DigestImplementation<?> impl = DigestImplementation.create(digestor, algorithm);\n" +

 "// GEN-END: day.end.bridges.Digest\n";

         File src = createFile(1, "C.java", c1);

         String c2 =

             "@day.end.bridges.Digest@";

         File txt = createFile(2, "in.txt", c2);

         File out = createFile(3, "out.txt", "");

         out.delete();

         execute(1, 2, "-Dfile1=" + txt, "-Dfile2=" + out, "-Dinclude1=*.java");

     }

     public void testLongLineDetected() throws Exception {

         String c1 =

 "package org.apidesign.api.security;\n" +

 "" +

 "import java.nio.ByteBuffer;\n" +

 "import java.util.ServiceLoader;\n" +

 "import org.apidesign.spi.security.Digestor;\n" +

 "\n" +

 "/** Simplified version of a Digest class that allows to compute a fingerprint\n" +

 " * for buffer of data.\n" +

 " *\n" +

 " * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>\n" +

 " */\n" +

 "// BEGIN: day.end.bridges.Digest\n" +

 "d;   DigestImplementation<?> impl = DigestImplementation.create(digestor, algorithm);\n" +

 "// END: day.end.bridges.Digest\n";

         File src = createFile(1, "C.java", c1);

         String c2 =

             "@day.end.bridges.Digest@";

         File txt = createFile(2, "in.txt", c2);

         File out = createFile(3, "out.txt", "");

         out.delete();

         try {

             execute(1, 2, "-Dfile1=" + txt, "-Dfile2=" + out, "-Dinclude1=*.java");

         } catch (ExecuteUtils.ExecutionError ex) {

             // OK

             return;

         }

         fail("Should fail, as there is long line");

     }

     public void testLongNotLineDetectedAsShortened() throws Exception {

         String c1 =

 "package org.apidesign.api.security;\n" +

 "" +

 "import java.nio.ByteBuffer;\n" +

 "import java.util.ServiceLoader;\n" +

 "import org.apidesign.spi.security.Digestor;\n" +

 "\n" +

 "/** Simplified version of a Digest class that allows to compute a fingerprint\n" +

 " * for buffer of data.\n" +

 " *\n" +

 " * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>\n" +

 " */\n" +

 "// BEGIN: day.end.bridges.Digest\n" +

 "   DigestImplementation<?> impl = DigestImplementation.create(digestor, algorithm);\n" +

 "// END: day.end.bridges.Digest\n";

         File src = createFile(1, "C.java", c1);

         String c2 =

             "@day.end.bridges.Digest@";

         File txt = createFile(2, "in.txt", c2);

         File out = createFile(3, "out.txt", "");

         out.delete();

         execute(1, 2, "-Dfile1=" + txt, "-Dfile2=" + out, "-Dinclude1=*.java");

     }

     public void testNotClosedSection() throws Exception {

         String c1 =

             "package ahoj;\n" +

             "// BEGIN: clazz\n" +

             "int x;\n" +

             "\n";

         File src = createFile(1, "I.java", c1);

         String c2 =

             "@clazz@";

         File txt = createFile(2, "in.txt", c2);

         File out = createFile(3, "out.txt", "");

         out.delete();

         try {

             execute(1, 2, "-Dfile1=" + txt, "-Dfile2=" + out, "-Dinclude1=*.java");

             fail("Has to fail");

         } catch (ExecuteUtils.ExecutionError ex) {

             // ok

         }

     }

     public void testLongNotLineDetectedAsNotInTheList() throws Exception {

         String c1 =

 "package org.apidesign.api.security;\n" +

 "" +

 "import java.nio.ByteBuffer;\n" +

 "import java.util.ServiceLoader;\n" +

 "import org.apidesign.spi.security.Digestor;\n" +

 "\n" +

 "/** Simplified version of a Digest class that allows to compute a fingerprint\n" +

 " * for buffer of data.\n" +

 " *\n" +

 " * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>\n" +

 " */\n" +

 "   DigestImplementation<?> impl    =      DigestImplementation.create(digestor, algorithm);\n" +

 "// BEGIN: day.end.bridges.Digest\n" +

 "   DigestImplementation<?> impl    =      null\n" +

 "// END: day.end.bridges.Digest\n";

         File src = createFile(1, "C.java", c1);

         String c2 =

             "@day.end.bridges.Digest@";

         File txt = createFile(2, "in.txt", c2);

         File out = createFile(3, "out.txt", "");

         out.delete();

         execute(1, 2, "-Dfile1=" + txt, "-Dfile2=" + out, "-Dinclude1=*.java");

     }

     protected final File createFile(int slot, String name, String content) throws Exception {

         File d1 = new File(getWorkDir(), "dir" + slot);

         File c1 = new File(d1, name);

         copy(content, c1);

         return c1;

     }

     protected final void execute(int slotFirst, int slotSecond, String... additionalArgs) throws Exception {

         File d1 = new File(getWorkDir(), "dir" + slotFirst);

         File d2 = new File(getWorkDir(), "dir" + slotSecond);

         File out = new File(getWorkDir(), "out");

         File build = new File(getWorkDir(), "build.xml");

         extractResource("copy.xml", build);

         List<String> args = new ArrayList<String>();

         args.addAll(Arrays.asList(additionalArgs));

         args.add("-Ddir1=" + d1);

         args.add("-Ddir2=" + d2);

         args.add("-Dout.dir=" + out);

         ExecuteUtils.execute(build, args.toArray(new String[0]));

     }

     private static final void copy(String txt, File f) throws Exception {

         f.getParentFile().mkdirs();

         FileWriter w = new FileWriter(f);

         w.append(txt);

         w.close();

     }

     final File extractResource(String res, File f) throws Exception {

         URL u = GrepCopyTest.class.getResource(res);

         assertNotNull ("Resource should be found " + res, u);

         FileOutputStream os = new FileOutputStream(f);

         InputStream is = u.openStream();

         for (;;) {

             int ch = is.read ();

             if (ch == -1) {

                 break;

             }

             os.write (ch);

         }

         os.close ();

         return f;

     }

     final String readFile (String name) throws java.io.IOException {

         File f = new File(new File(getWorkDir(), "out"), name);

         if (!f.exists()) {

             throw new FileNotFoundException(f.getPath());

         }

         int s = (int)f.length ();

         byte[] data = new byte[s];

         assertEquals ("Read all data", s, new java.io.FileInputStream (f).read (data));

         return new String (data);

     }

     final File extractString (String res, String nameExt) throws Exception {

         File f = new File(getWorkDir(), nameExt);

         f.deleteOnExit ();

         FileOutputStream os = new FileOutputStream(f);

         InputStream is = new ByteArrayInputStream(res.getBytes("UTF-8"));

         for (;;) {

             int ch = is.read ();

             if (ch == -1) {

                 break;

             }

             os.write (ch);

         }

         os.close ();

         return f;

     }

 }