Ant example source code file (Jar.java)
The Jar.java source code
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.tools.ant.taskdefs;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.Reader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.StringTokenizer;
import java.util.TreeMap;
import java.util.Vector;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.types.EnumeratedAttribute;
import org.apache.tools.ant.types.Path;
import org.apache.tools.ant.types.ResourceCollection;
import org.apache.tools.ant.types.ZipFileSet;
import org.apache.tools.ant.types.spi.Service;
import org.apache.tools.zip.JarMarker;
import org.apache.tools.zip.ZipExtraField;
import org.apache.tools.zip.ZipOutputStream;
/**
* Creates a JAR archive.
*
* @since Ant 1.1
*
* @ant.task category="packaging"
*/
public class Jar extends Zip {
/** The index file name. */
private static final String INDEX_NAME = "META-INF/INDEX.LIST";
/** The manifest file name. */
private static final String MANIFEST_NAME = "META-INF/MANIFEST.MF";
/**
* List of all known SPI Services
*/
private List serviceList = new ArrayList();
/** merged manifests added through addConfiguredManifest */
private Manifest configuredManifest;
/** shadow of the above if upToDate check alters the value */
private Manifest savedConfiguredManifest;
/** merged manifests added through filesets */
private Manifest filesetManifest;
/**
* Manifest of original archive, will be set to null if not in
* update mode.
*/
private Manifest originalManifest;
/**
* whether to merge fileset manifests;
* value is true if filesetmanifest is 'merge' or 'mergewithoutmain'
*/
private FilesetManifestConfig filesetManifestConfig;
/**
* whether to merge the main section of fileset manifests;
* value is true if filesetmanifest is 'merge'
*/
private boolean mergeManifestsMain = true;
/** the manifest specified by the 'manifest' attribute **/
private Manifest manifest;
/** The encoding to use when reading in a manifest file */
private String manifestEncoding;
/**
* The file found from the 'manifest' attribute. This can be
* either the location of a manifest, or the name of a jar added
* through a fileset. If its the name of an added jar, the
* manifest is looked for in META-INF/MANIFEST.MF
*/
private File manifestFile;
/** jar index is JDK 1.3+ only */
private boolean index = false;
/**
* whether to really create the archive in createEmptyZip, will
* get set in getResourcesToAdd.
*/
private boolean createEmpty = false;
/**
* Stores all files that are in the root of the archive (i.e. that
* have a name that doesn't contain a slash) so they can get
* listed in the index.
*
* Will not be filled unless the user has asked for an index.
*
* @since Ant 1.6
*/
private Vector rootEntries;
/**
* Path containing jars that shall be indexed in addition to this archive.
*
* @since Ant 1.6.2
*/
private Path indexJars;
/**
* Extra fields needed to make Solaris recognize the archive as a jar file.
*
* @since Ant 1.6.3
*/
private static final ZipExtraField[] JAR_MARKER = new ZipExtraField[] {
JarMarker.getInstance()
};
// CheckStyle:VisibilityModifier OFF - bc
protected String emptyBehavior = "create";
// CheckStyle:VisibilityModifier ON
/** constructor */
public Jar() {
super();
archiveType = "jar";
emptyBehavior = "create";
setEncoding("UTF8");
rootEntries = new Vector();
}
/**
* Not used for jar files.
* @param we not used
* @ant.attribute ignore="true"
*/
public void setWhenempty(WhenEmpty we) {
log("JARs are never empty, they contain at least a manifest file",
Project.MSG_WARN);
}
/**
* Indicates if a jar file should be created when it would only contain a
* manifest file.
* Possible values are: <code>fail (throw an exception
* and halt the build); <code>skip (do not create
* any archive, but issue a warning); <code>create
* (make an archive with only a manifest file).
* Default is <code>create;
* @param we a <code>WhenEmpty enumerated value
*/
public void setWhenmanifestonly(WhenEmpty we) {
emptyBehavior = we.getValue();
}
/**
* Set the destination file.
* @param jarFile the destination file
* @deprecated since 1.5.x.
* Use setDestFile(File) instead.
*/
public void setJarfile(File jarFile) {
setDestFile(jarFile);
}
/**
* Set whether or not to create an index list for classes.
* This may speed up classloading in some cases.
* @param flag a <code>boolean value
*/
public void setIndex(boolean flag) {
index = flag;
}
/**
* The character encoding to use in the manifest file.
*
* @param manifestEncoding the character encoding
*/
public void setManifestEncoding(String manifestEncoding) {
this.manifestEncoding = manifestEncoding;
}
/**
* Allows the manifest for the archive file to be provided inline
* in the build file rather than in an external file.
*
* @param newManifest an embedded manifest element
* @throws ManifestException on error
*/
public void addConfiguredManifest(Manifest newManifest)
throws ManifestException {
if (configuredManifest == null) {
configuredManifest = newManifest;
} else {
configuredManifest.merge(newManifest);
}
savedConfiguredManifest = configuredManifest;
}
/**
* The manifest file to use. This can be either the location of a manifest,
* or the name of a jar added through a fileset. If its the name of an added
* jar, the task expects the manifest to be in the jar at META-INF/MANIFEST.MF.
*
* @param manifestFile the manifest file to use.
*/
public void setManifest(File manifestFile) {
if (!manifestFile.exists()) {
throw new BuildException("Manifest file: " + manifestFile
+ " does not exist.", getLocation());
}
this.manifestFile = manifestFile;
}
private Manifest getManifest(File manifestFile) {
Manifest newManifest = null;
FileInputStream fis = null;
InputStreamReader isr = null;
try {
fis = new FileInputStream(manifestFile);
if (manifestEncoding == null) {
isr = new InputStreamReader(fis);
} else {
isr = new InputStreamReader(fis, manifestEncoding);
}
newManifest = getManifest(isr);
} catch (UnsupportedEncodingException e) {
throw new BuildException("Unsupported encoding while reading manifest: "
+ e.getMessage(), e);
} catch (IOException e) {
throw new BuildException("Unable to read manifest file: "
+ manifestFile
+ " (" + e.getMessage() + ")", e);
} finally {
if (isr != null) {
try {
isr.close();
} catch (IOException e) {
// do nothing
}
}
}
return newManifest;
}
/**
* @return null if jarFile doesn't contain a manifest, the
* manifest otherwise.
* @since Ant 1.5.2
*/
private Manifest getManifestFromJar(File jarFile) throws IOException {
ZipFile zf = null;
try {
zf = new ZipFile(jarFile);
// must not use getEntry as "well behaving" applications
// must accept the manifest in any capitalization
Enumeration e = zf.entries();
while (e.hasMoreElements()) {
ZipEntry ze = (ZipEntry) e.nextElement();
if (ze.getName().equalsIgnoreCase(MANIFEST_NAME)) {
InputStreamReader isr =
new InputStreamReader(zf.getInputStream(ze), "UTF-8");
return getManifest(isr);
}
}
return null;
} finally {
if (zf != null) {
try {
zf.close();
} catch (IOException e) {
// XXX - log an error? throw an exception?
}
}
}
}
private Manifest getManifest(Reader r) {
Manifest newManifest = null;
try {
newManifest = new Manifest(r);
} catch (ManifestException e) {
log("Manifest is invalid: " + e.getMessage(), Project.MSG_ERR);
throw new BuildException("Invalid Manifest: " + manifestFile,
e, getLocation());
} catch (IOException e) {
throw new BuildException("Unable to read manifest file"
+ " (" + e.getMessage() + ")", e);
}
return newManifest;
}
/**
* Behavior when a Manifest is found in a zipfileset or zipgroupfileset file.
* Valid values are "skip", "merge", and "mergewithoutmain".
* "merge" will merge all of manifests together, and merge this into any
* other specified manifests.
* "mergewithoutmain" merges everything but the Main section of the manifests.
* Default value is "skip".
*
* Note: if this attribute's value is not "skip", the created jar will not
* be readable by using java.util.jar.JarInputStream
*
* @param config setting for found manifest behavior.
*/
public void setFilesetmanifest(FilesetManifestConfig config) {
filesetManifestConfig = config;
mergeManifestsMain = "merge".equals(config.getValue());
if (filesetManifestConfig != null
&& !filesetManifestConfig.getValue().equals("skip")) {
doubleFilePass = true;
}
}
/**
* Adds a zipfileset to include in the META-INF directory.
*
* @param fs zipfileset to add
*/
public void addMetainf(ZipFileSet fs) {
// We just set the prefix for this fileset, and pass it up.
fs.setPrefix("META-INF/");
super.addFileset(fs);
}
/**
* Add a path to index jars.
* @param p a path
* @since Ant 1.6.2
*/
public void addConfiguredIndexJars(Path p) {
if (indexJars == null) {
indexJars = new Path(getProject());
}
indexJars.append(p);
}
/**
* A nested SPI service element.
* @param service the nested element.
* @since Ant 1.7
*/
public void addConfiguredService(Service service) {
// Check if the service is configured correctly
service.check();
serviceList.add(service);
}
/**
* Write SPI Information to JAR
*/
private void writeServices(ZipOutputStream zOut) throws IOException {
Iterator serviceIterator;
Service service;
serviceIterator = serviceList.iterator();
while (serviceIterator.hasNext()) {
service = (Service) serviceIterator.next();
//stolen from writeManifest
super.zipFile(service.getAsStream(), zOut,
"META-INF/service/" + service.getType(),
System.currentTimeMillis(), null,
ZipFileSet.DEFAULT_FILE_MODE);
}
}
/**
* Initialize the zip output stream.
* @param zOut the zip output stream
* @throws IOException on I/O errors
* @throws BuildException on other errors
*/
protected void initZipOutputStream(ZipOutputStream zOut)
throws IOException, BuildException {
if (!skipWriting) {
Manifest jarManifest = createManifest();
writeManifest(zOut, jarManifest);
writeServices(zOut);
}
}
private Manifest createManifest()
throws BuildException {
try {
Manifest finalManifest = Manifest.getDefaultManifest();
if (manifest == null) {
if (manifestFile != null) {
// if we haven't got the manifest yet, attempt to
// get it now and have manifest be the final merge
manifest = getManifest(manifestFile);
}
}
/*
* Precedence: manifestFile wins over inline manifest,
* over manifests read from the filesets over the original
* manifest.
*
* merge with null argument is a no-op
*/
if (isInUpdateMode()) {
finalManifest.merge(originalManifest);
}
finalManifest.merge(filesetManifest);
finalManifest.merge(configuredManifest);
finalManifest.merge(manifest, !mergeManifestsMain);
return finalManifest;
} catch (ManifestException e) {
log("Manifest is invalid: " + e.getMessage(), Project.MSG_ERR);
throw new BuildException("Invalid Manifest", e, getLocation());
}
}
private void writeManifest(ZipOutputStream zOut, Manifest manifest)
throws IOException {
for (Enumeration e = manifest.getWarnings();
e.hasMoreElements();) {
log("Manifest warning: " + (String) e.nextElement(),
Project.MSG_WARN);
}
zipDir(null, zOut, "META-INF/", ZipFileSet.DEFAULT_DIR_MODE,
JAR_MARKER);
// time to write the manifest
ByteArrayOutputStream baos = new ByteArrayOutputStream();
OutputStreamWriter osw = new OutputStreamWriter(baos, Manifest.JAR_ENCODING);
PrintWriter writer = new PrintWriter(osw);
manifest.write(writer);
writer.flush();
ByteArrayInputStream bais =
new ByteArrayInputStream(baos.toByteArray());
super.zipFile(bais, zOut, MANIFEST_NAME,
System.currentTimeMillis(), null,
ZipFileSet.DEFAULT_FILE_MODE);
super.initZipOutputStream(zOut);
}
/**
* Finalize the zip output stream.
* This creates an index list if the index attribute is true.
* @param zOut the zip output stream
* @throws IOException on I/O errors
* @throws BuildException on other errors
*/
protected void finalizeZipOutputStream(ZipOutputStream zOut)
throws IOException, BuildException {
if (index) {
createIndexList(zOut);
}
}
/**
* Create the index list to speed up classloading.
* This is a JDK 1.3+ specific feature and is enabled by default. See
* <a href="http://java.sun.com/j2se/1.3/docs/guide/jar/jar.html#JAR%20Index">
* the JAR index specification</a> for more details.
*
* @param zOut the zip stream representing the jar being built.
* @throws IOException thrown if there is an error while creating the
* index and adding it to the zip stream.
*/
private void createIndexList(ZipOutputStream zOut) throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
// encoding must be UTF8 as specified in the specs.
PrintWriter writer = new PrintWriter(new OutputStreamWriter(baos,
"UTF8"));
// version-info blankline
writer.println("JarIndex-Version: 1.0");
writer.println();
// header newline
writer.println(zipFile.getName());
writeIndexLikeList(new ArrayList(addedDirs.keySet()),
rootEntries, writer);
writer.println();
if (indexJars != null) {
Manifest mf = createManifest();
Manifest.Attribute classpath =
mf.getMainSection().getAttribute(Manifest.ATTRIBUTE_CLASSPATH);
String[] cpEntries = null;
if (classpath != null && classpath.getValue() != null) {
StringTokenizer tok = new StringTokenizer(classpath.getValue(),
" ");
cpEntries = new String[tok.countTokens()];
int c = 0;
while (tok.hasMoreTokens()) {
cpEntries[c++] = tok.nextToken();
}
}
String[] indexJarEntries = indexJars.list();
for (int i = 0; i < indexJarEntries.length; i++) {
String name = findJarName(indexJarEntries[i], cpEntries);
if (name != null) {
ArrayList dirs = new ArrayList();
ArrayList files = new ArrayList();
grabFilesAndDirs(indexJarEntries[i], dirs, files);
if (dirs.size() + files.size() > 0) {
writer.println(name);
writeIndexLikeList(dirs, files, writer);
writer.println();
}
}
}
}
writer.flush();
ByteArrayInputStream bais =
new ByteArrayInputStream(baos.toByteArray());
super.zipFile(bais, zOut, INDEX_NAME, System.currentTimeMillis(), null,
ZipFileSet.DEFAULT_FILE_MODE);
}
/**
* Overridden from Zip class to deal with manifests and index lists.
* @param is the input stream
* @param zOut the zip output stream
* @param vPath the name this entry shall have in the archive
* @param lastModified last modification time for the entry.
* @param fromArchive the original archive we are copying this
* entry from, will be null if we are not copying from an archive.
* @param mode the Unix permissions to set.
* @throws IOException on error
*/
protected void zipFile(InputStream is, ZipOutputStream zOut, String vPath,
long lastModified, File fromArchive, int mode)
throws IOException {
if (MANIFEST_NAME.equalsIgnoreCase(vPath)) {
if (!doubleFilePass || (doubleFilePass && skipWriting)) {
filesetManifest(fromArchive, is);
}
} else if (INDEX_NAME.equalsIgnoreCase(vPath) && index) {
log("Warning: selected " + archiveType
+ " files include a META-INF/INDEX.LIST which will"
+ " be replaced by a newly generated one.", Project.MSG_WARN);
} else {
if (index && vPath.indexOf("/") == -1) {
rootEntries.addElement(vPath);
}
super.zipFile(is, zOut, vPath, lastModified, fromArchive, mode);
}
}
private void filesetManifest(File file, InputStream is) throws IOException {
if (manifestFile != null && manifestFile.equals(file)) {
// If this is the same name specified in 'manifest', this
// is the manifest to use
log("Found manifest " + file, Project.MSG_VERBOSE);
try {
if (is != null) {
InputStreamReader isr;
if (manifestEncoding == null) {
isr = new InputStreamReader(is);
} else {
isr = new InputStreamReader(is, manifestEncoding);
}
manifest = getManifest(isr);
} else {
manifest = getManifest(file);
}
} catch (UnsupportedEncodingException e) {
throw new BuildException("Unsupported encoding while reading "
+ "manifest: " + e.getMessage(), e);
}
} else if (filesetManifestConfig != null
&& !filesetManifestConfig.getValue().equals("skip")) {
// we add this to our group of fileset manifests
log("Found manifest to merge in file " + file,
Project.MSG_VERBOSE);
try {
Manifest newManifest = null;
if (is != null) {
InputStreamReader isr;
if (manifestEncoding == null) {
isr = new InputStreamReader(is);
} else {
isr = new InputStreamReader(is, manifestEncoding);
}
newManifest = getManifest(isr);
} else {
newManifest = getManifest(file);
}
if (filesetManifest == null) {
filesetManifest = newManifest;
} else {
filesetManifest.merge(newManifest);
}
} catch (UnsupportedEncodingException e) {
throw new BuildException("Unsupported encoding while reading "
+ "manifest: " + e.getMessage(), e);
} catch (ManifestException e) {
log("Manifest in file " + file + " is invalid: "
+ e.getMessage(), Project.MSG_ERR);
throw new BuildException("Invalid Manifest", e, getLocation());
}
} else {
// assuming 'skip' otherwise
// don't warn if skip has been requested explicitly, warn if user
// didn't set the attribute
// Hide warning also as it makes no sense since
// the filesetmanifest attribute itself has been
// hidden
//int logLevel = filesetManifestConfig == null ?
// Project.MSG_WARN : Project.MSG_VERBOSE;
//log("File " + file
// + " includes a META-INF/MANIFEST.MF which will be ignored. "
// + "To include this file, set filesetManifest to a value other "
// + "than 'skip'.", logLevel);
}
}
/**
* Collect the resources that are newer than the corresponding
* entries (or missing) in the original archive.
*
* <p>If we are going to recreate the archive instead of updating
* it, all resources should be considered as new, if a single one
* is. Because of this, subclasses overriding this method must
* call <code>super.getResourcesToAdd and indicate with the
* third arg if they already know that the archive is
* out-of-date.</p>
*
* @param rcs The resource collections to grab resources from
* @param zipFile intended archive file (may or may not exist)
* @param needsUpdate whether we already know that the archive is
* out-of-date. Subclasses overriding this method are supposed to
* set this value correctly in their call to
* super.getResourcesToAdd.
* @return an array of resources to add for each fileset passed in as well
* as a flag that indicates whether the archive is uptodate.
*
* @exception BuildException if it likes
*/
protected ArchiveState getResourcesToAdd(ResourceCollection[] rcs,
File zipFile,
boolean needsUpdate)
throws BuildException {
// need to handle manifest as a special check
if (zipFile.exists()) {
// if it doesn't exist, it will get created anyway, don't
// bother with any up-to-date checks.
try {
originalManifest = getManifestFromJar(zipFile);
if (originalManifest == null) {
log("Updating jar since the current jar has no manifest",
Project.MSG_VERBOSE);
needsUpdate = true;
} else {
Manifest mf = createManifest();
if (!mf.equals(originalManifest)) {
log("Updating jar since jar manifest has changed",
Project.MSG_VERBOSE);
needsUpdate = true;
}
}
} catch (Throwable t) {
log("error while reading original manifest in file: "
+ zipFile.toString() + t.getMessage(),
Project.MSG_WARN);
needsUpdate = true;
}
} else {
// no existing archive
needsUpdate = true;
}
createEmpty = needsUpdate;
return super.getResourcesToAdd(rcs, zipFile, needsUpdate);
}
/**
* Create an empty jar file.
* @param zipFile the file to create
* @return true for historic reasons
* @throws BuildException on error
*/
protected boolean createEmptyZip(File zipFile) throws BuildException {
if (!createEmpty) {
return true;
}
if (emptyBehavior.equals("skip")) {
log("Warning: skipping " + archiveType + " archive "
+ zipFile + " because no files were included.",
Project.MSG_WARN);
return true;
} else if (emptyBehavior.equals("fail")) {
throw new BuildException("Cannot create " + archiveType
+ " archive " + zipFile
+ ": no files were included.",
getLocation());
}
ZipOutputStream zOut = null;
try {
log("Building MANIFEST-only jar: "
+ getDestFile().getAbsolutePath());
zOut = new ZipOutputStream(new FileOutputStream(getDestFile()));
zOut.setEncoding(getEncoding());
if (isCompress()) {
zOut.setMethod(ZipOutputStream.DEFLATED);
} else {
zOut.setMethod(ZipOutputStream.STORED);
}
initZipOutputStream(zOut);
finalizeZipOutputStream(zOut);
} catch (IOException ioe) {
throw new BuildException("Could not create almost empty JAR archive"
+ " (" + ioe.getMessage() + ")", ioe,
getLocation());
} finally {
// Close the output stream.
try {
if (zOut != null) {
zOut.close();
}
} catch (IOException ex) {
// Ignore close exception
}
createEmpty = false;
}
return true;
}
/**
* Make sure we don't think we already have a MANIFEST next time this task
* gets executed.
*
* @see Zip#cleanUp
*/
protected void cleanUp() {
super.cleanUp();
// we want to save this info if we are going to make another pass
if (!doubleFilePass || (doubleFilePass && !skipWriting)) {
manifest = null;
configuredManifest = savedConfiguredManifest;
filesetManifest = null;
originalManifest = null;
}
rootEntries.removeAllElements();
}
/**
* reset to default values.
*
* @see Zip#reset
*
* @since 1.44, Ant 1.5
*/
public void reset() {
super.reset();
emptyBehavior = "create";
configuredManifest = null;
filesetManifestConfig = null;
mergeManifestsMain = false;
manifestFile = null;
index = false;
}
/**
* The manifest config enumerated type.
*/
public static class FilesetManifestConfig extends EnumeratedAttribute {
/**
* Get the list of valid strings.
* @return the list of values - "skip", "merge" and "mergewithoutmain"
*/
public String[] getValues() {
return new String[] {"skip", "merge", "mergewithoutmain"};
}
}
/**
* Writes the directory entries from the first and the filenames
* from the second list to the given writer, one entry per line.
*
* @param dirs a list of directories
* @param files a list of files
* @param writer the writer to write to
* @throws IOException on error
* @since Ant 1.6.2
*/
protected final void writeIndexLikeList(List dirs, List files,
PrintWriter writer)
throws IOException {
// JarIndex is sorting the directories by ascending order.
// it has no value but cosmetic since it will be read into a
// hashtable by the classloader, but we'll do so anyway.
Collections.sort(dirs);
Collections.sort(files);
Iterator iter = dirs.iterator();
while (iter.hasNext()) {
String dir = (String) iter.next();
// try to be smart, not to be fooled by a weird directory name
dir = dir.replace('\\', '/');
if (dir.startsWith("./")) {
dir = dir.substring(2);
}
while (dir.startsWith("/")) {
dir = dir.substring(1);
}
int pos = dir.lastIndexOf('/');
if (pos != -1) {
dir = dir.substring(0, pos);
}
// looks like nothing from META-INF should be added
// and the check is not case insensitive.
// see sun.misc.JarIndex
if (dir.startsWith("META-INF")) {
continue;
}
// name newline
writer.println(dir);
}
iter = files.iterator();
while (iter.hasNext()) {
writer.println(iter.next());
}
}
/**
* try to guess the name of the given file.
*
* <p>If this jar has a classpath attribute in its manifest, we
* can assume that it will only require an index of jars listed
* there. try to find which classpath entry is most likely the
* one the given file name points to.</p>
*
* <p>In the absence of a classpath attribute, assume the other
* files will be placed inside the same directory as this jar and
* use their basename.</p>
*
* <p>if there is a classpath and the given file doesn't match any
* of its entries, return null.</p>
*
* @param fileName the name to look for
* @param classpath the classpath to look in (may be null)
* @return the matching entry, or null if the file is not found
* @since Ant 1.6.2
*/
protected static final String findJarName(String fileName,
String[] classpath) {
if (classpath == null) {
return (new File(fileName)).getName();
}
fileName = fileName.replace(File.separatorChar, '/');
TreeMap matches = new TreeMap(new Comparator() {
// longest match comes first
public int compare(Object o1, Object o2) {
if (o1 instanceof String && o2 instanceof String) {
return ((String) o2).length()
- ((String) o1).length();
}
return 0;
}
});
for (int i = 0; i < classpath.length; i++) {
if (fileName.endsWith(classpath[i])) {
matches.put(classpath[i], classpath[i]);
} else {
int slash = classpath[i].indexOf("/");
String candidate = classpath[i];
while (slash > -1) {
candidate = candidate.substring(slash + 1);
if (fileName.endsWith(candidate)) {
matches.put(candidate, classpath[i]);
break;
}
slash = candidate.indexOf("/");
}
}
}
return matches.size() == 0
? null : (String) matches.get(matches.firstKey());
}
/**
* Grab lists of all root-level files and all directories
* contained in the given archive.
* @param file the zip file to examine
* @param dirs where to place the directories found
* @param files where to place the files found
* @since Ant 1.7
* @throws IOException on error
*/
protected static final void grabFilesAndDirs(String file, List dirs,
List files)
throws IOException {
org.apache.tools.zip.ZipFile zf = null;
try {
zf = new org.apache.tools.zip.ZipFile(file, "utf-8");
Enumeration entries = zf.getEntries();
HashSet dirSet = new HashSet();
while (entries.hasMoreElements()) {
org.apache.tools.zip.ZipEntry ze =
(org.apache.tools.zip.ZipEntry) entries.nextElement();
String name = ze.getName();
// META-INF would be skipped anyway, avoid index for
// manifest-only jars.
if (!name.startsWith("META-INF/")) {
if (ze.isDirectory()) {
dirSet.add(name);
} else if (name.indexOf("/") == -1) {
files.add(name);
} else {
// a file, not in the root
// since the jar may be one without directory
// entries, add the parent dir of this file as
// well.
dirSet.add(name.substring(0,
name.lastIndexOf("/") + 1));
}
}
}
dirs.addAll(dirSet);
} finally {
if (zf != null) {
zf.close();
}
}
}
}
Other Ant examples (source code examples)Here is a short list of links related to this Ant Jar.java source code file: |
The search page
Other Ant source code examples at this package level
Click here to learn more about this project
