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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
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 * 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).
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package sun.tools.jar;

import java.io.*;
import java.util.*;
import java.util.zip.*;
import java.util.jar.*;
import java.util.jar.Manifest;
import java.text.MessageFormat;
import sun.misc.JarIndex;
import static sun.misc.JarIndex.INDEX_NAME;
import static java.util.jar.JarFile.MANIFEST_NAME;

This class implements a simple utility for creating files in the JAR (Java Archive) file format. The JAR format is based on the ZIP file format, with optional meta-information stored in a MANIFEST entry.
/** * This class implements a simple utility for creating files in the JAR * (Java Archive) file format. The JAR format is based on the ZIP file * format, with optional meta-information stored in a MANIFEST entry. */
public class Main { String program; PrintStream out, err; String fname, mname, ename; String zname = ""; String[] files; String rootjar = null; // An entryName(path)->File map generated during "expand", it helps to // decide whether or not an existing entry in a jar file needs to be // replaced, during the "update" operation. Map<String, File> entryMap = new HashMap<String, File>(); // All files need to be added/updated. Set<File> entries = new LinkedHashSet<File>(); // Directories specified by "-C" operation. Set<String> paths = new HashSet<String>(); /* * cflag: create * uflag: update * xflag: xtract * tflag: table * vflag: verbose * flag0: no zip compression (store only) * Mflag: DO NOT generate a manifest file (just ZIP) * iflag: generate jar index * pflag: preserve/don't strip leading slash and .. component from file name */ boolean cflag, uflag, xflag, tflag, vflag, flag0, Mflag, iflag, pflag; static final String MANIFEST_DIR = "META-INF/"; static final String VERSION = "1.0"; private static ResourceBundle rsrc;
If true, maintain compatibility with JDK releases prior to 6.0 by timestamping extracted files with the time at which they are extracted. Default is to use the time given in the archive.
/** * If true, maintain compatibility with JDK releases prior to 6.0 by * timestamping extracted files with the time at which they are extracted. * Default is to use the time given in the archive. */
private static final boolean useExtractionTime = Boolean.getBoolean("sun.tools.jar.useExtractionTime");
Initialize ResourceBundle
/** * Initialize ResourceBundle */
static { try { rsrc = ResourceBundle.getBundle("sun.tools.jar.resources.jar"); } catch (MissingResourceException e) { throw new Error("Fatal: Resource for jar is missing"); } } private String getMsg(String key) { try { return (rsrc.getString(key)); } catch (MissingResourceException e) { throw new Error("Error in message file"); } } private String formatMsg(String key, String arg) { String msg = getMsg(key); String[] args = new String[1]; args[0] = arg; return MessageFormat.format(msg, (Object[]) args); } private String formatMsg2(String key, String arg, String arg1) { String msg = getMsg(key); String[] args = new String[2]; args[0] = arg; args[1] = arg1; return MessageFormat.format(msg, (Object[]) args); } public Main(PrintStream out, PrintStream err, String program) { this.out = out; this.err = err; this.program = program; }
Creates a new empty temporary file in the same directory as the specified file. A variant of sun.misc.IOUtils.createTempFile.
/** * Creates a new empty temporary file in the same directory as the * specified file. A variant of sun.misc.IOUtils.createTempFile. */
private static File createTempFileInSameDirectoryAs(File file) throws IOException { File dir = file.getParentFile(); if (dir == null) dir = new File("."); return File.createTempFile("jartmp", null, dir); } private boolean ok;
Starts main program with the specified arguments.
/** * Starts main program with the specified arguments. */
public synchronized boolean run(String args[]) { ok = true; if (!parseArgs(args)) { return false; } try { if (cflag || uflag) { if (fname != null) { // The name of the zip file as it would appear as its own // zip file entry. We use this to make sure that we don't // add the zip file to itself. zname = fname.replace(File.separatorChar, '/'); if (zname.startsWith("./")) { zname = zname.substring(2); } } } if (cflag) { Manifest manifest = null; InputStream in = null; if (!Mflag) { if (mname != null) { in = new FileInputStream(mname); manifest = new Manifest(new BufferedInputStream(in)); } else { manifest = new Manifest(); } addVersion(manifest); addCreatedBy(manifest); if (isAmbiguousMainClass(manifest)) { if (in != null) { in.close(); } return false; } if (ename != null) { addMainClass(manifest, ename); } } expand(null, files, false); OutputStream out; if (fname != null) { out = new FileOutputStream(fname); } else { out = new FileOutputStream(FileDescriptor.out); if (vflag) { // Disable verbose output so that it does not appear // on stdout along with file data // error("Warning: -v option ignored"); vflag = false; } } create(new BufferedOutputStream(out, 4096), manifest); if (in != null) { in.close(); } out.close(); } else if (uflag) { File inputFile = null, tmpFile = null; FileInputStream in; FileOutputStream out; if (fname != null) { inputFile = new File(fname); tmpFile = createTempFileInSameDirectoryAs(inputFile); in = new FileInputStream(inputFile); out = new FileOutputStream(tmpFile); } else { in = new FileInputStream(FileDescriptor.in); out = new FileOutputStream(FileDescriptor.out); vflag = false; } InputStream manifest = (!Mflag && (mname != null)) ? (new FileInputStream(mname)) : null; expand(null, files, true); boolean updateOk = update(in, new BufferedOutputStream(out), manifest, null); if (ok) { ok = updateOk; } in.close(); out.close(); if (manifest != null) { manifest.close(); } if (fname != null) { // on Win32, we need this delete inputFile.delete(); if (!tmpFile.renameTo(inputFile)) { tmpFile.delete(); throw new IOException(getMsg("error.write.file")); } tmpFile.delete(); } } else if (tflag) { replaceFSC(files); if (fname != null) { list(fname, files); } else { InputStream in = new FileInputStream(FileDescriptor.in); try { list(new BufferedInputStream(in), files); } finally { in.close(); } } } else if (xflag) { replaceFSC(files); if (fname != null && files != null) { extract(fname, files); } else { InputStream in = (fname == null) ? new FileInputStream(FileDescriptor.in) : new FileInputStream(fname); try { extract(new BufferedInputStream(in), files); } finally { in.close(); } } } else if (iflag) { genIndex(rootjar, files); } } catch (IOException e) { fatalError(e); ok = false; } catch (Error ee) { ee.printStackTrace(); ok = false; } catch (Throwable t) { t.printStackTrace(); ok = false; } out.flush(); err.flush(); return ok; }
Parses command line arguments.
/** * Parses command line arguments. */
boolean parseArgs(String args[]) { /* Preprocess and expand @file arguments */ try { args = CommandLine.parse(args); } catch (FileNotFoundException e) { fatalError(formatMsg("error.cant.open", e.getMessage())); return false; } catch (IOException e) { fatalError(e); return false; } /* parse flags */ int count = 1; try { String flags = args[0]; if (flags.startsWith("-")) { flags = flags.substring(1); } for (int i = 0; i < flags.length(); i++) { switch (flags.charAt(i)) { case 'c': if (xflag || tflag || uflag) { usageError(); return false; } cflag = true; break; case 'u': if (cflag || xflag || tflag) { usageError(); return false; } uflag = true; break; case 'x': if (cflag || uflag || tflag) { usageError(); return false; } xflag = true; break; case 't': if (cflag || uflag || xflag) { usageError(); return false; } tflag = true; break; case 'M': Mflag = true; break; case 'v': vflag = true; break; case 'f': fname = args[count++]; break; case 'm': mname = args[count++]; break; case '0': flag0 = true; break; case 'i': // do not increase the counter, files will contain rootjar rootjar = args[count++]; iflag = true; break; case 'e': ename = args[count++]; break; case 'P': pflag = true; break; default: error(formatMsg("error.illegal.option", String.valueOf(flags.charAt(i)))); usageError(); return false; } } } catch (ArrayIndexOutOfBoundsException e) { usageError(); return false; } if (!cflag && !tflag && !xflag && !uflag && !iflag) { error(getMsg("error.bad.option")); usageError(); return false; } /* parse file arguments */ int n = args.length - count; if (n > 0) { int k = 0; String[] nameBuf = new String[n]; try { for (int i = count; i < args.length; i++) { if (args[i].equals("-C")) { /* change the directory */ String dir = args[++i]; dir = (dir.endsWith(File.separator) ? dir : (dir + File.separator)); dir = dir.replace(File.separatorChar, '/'); while (dir.indexOf("//") > -1) { dir = dir.replace("//", "/"); } paths.add(dir.replace(File.separatorChar, '/')); nameBuf[k++] = dir + args[++i]; } else { nameBuf[k++] = args[i]; } } } catch (ArrayIndexOutOfBoundsException e) { usageError(); return false; } files = new String[k]; System.arraycopy(nameBuf, 0, files, 0, k); } else if (cflag && (mname == null)) { error(getMsg("error.bad.cflag")); usageError(); return false; } else if (uflag) { if ((mname != null) || (ename != null)) { /* just want to update the manifest */ return true; } else { error(getMsg("error.bad.uflag")); usageError(); return false; } } return true; }
Expands list of files to process into full list of all files that can be found by recursively descending directories.
/** * Expands list of files to process into full list of all files that * can be found by recursively descending directories. */
void expand(File dir, String[] files, boolean isUpdate) { if (files == null) { return; } for (int i = 0; i < files.length; i++) { File f; if (dir == null) { f = new File(files[i]); } else { f = new File(dir, files[i]); } if (f.isFile()) { if (entries.add(f)) { if (isUpdate) entryMap.put(entryName(f.getPath()), f); } } else if (f.isDirectory()) { if (entries.add(f)) { if (isUpdate) { String dirPath = f.getPath(); dirPath = (dirPath.endsWith(File.separator)) ? dirPath : (dirPath + File.separator); entryMap.put(entryName(dirPath), f); } expand(f, f.list(), isUpdate); } } else { error(formatMsg("error.nosuch.fileordir", String.valueOf(f))); ok = false; } } }
Creates a new JAR file.
/** * Creates a new JAR file. */
void create(OutputStream out, Manifest manifest) throws IOException { ZipOutputStream zos = new JarOutputStream(out); if (flag0) { zos.setMethod(ZipOutputStream.STORED); } if (manifest != null) { if (vflag) { output(getMsg("out.added.manifest")); } ZipEntry e = new ZipEntry(MANIFEST_DIR); e.setTime(System.currentTimeMillis()); e.setSize(0); e.setCrc(0); zos.putNextEntry(e); e = new ZipEntry(MANIFEST_NAME); e.setTime(System.currentTimeMillis()); if (flag0) { crc32Manifest(e, manifest); } zos.putNextEntry(e); manifest.write(zos); zos.closeEntry(); } for (File file: entries) { addFile(zos, file); } zos.close(); } private char toUpperCaseASCII(char c) { return (c < 'a' || c > 'z') ? c : (char) (c + 'A' - 'a'); }
Compares two strings for equality, ignoring case. The second argument must contain only upper-case ASCII characters. We don't want case comparison to be locale-dependent (else we have the notorious "turkish i bug").
/** * Compares two strings for equality, ignoring case. The second * argument must contain only upper-case ASCII characters. * We don't want case comparison to be locale-dependent (else we * have the notorious "turkish i bug"). */
private boolean equalsIgnoreCase(String s, String upper) { assert upper.toUpperCase(java.util.Locale.ENGLISH).equals(upper); int len; if ((len = s.length()) != upper.length()) return false; for (int i = 0; i < len; i++) { char c1 = s.charAt(i); char c2 = upper.charAt(i); if (c1 != c2 && toUpperCaseASCII(c1) != c2) return false; } return true; }
Updates an existing jar file.
/** * Updates an existing jar file. */
boolean update(InputStream in, OutputStream out, InputStream newManifest, JarIndex jarIndex) throws IOException { ZipInputStream zis = new ZipInputStream(in); ZipOutputStream zos = new JarOutputStream(out); ZipEntry e = null; boolean foundManifest = false; boolean updateOk = true; if (jarIndex != null) { addIndex(jarIndex, zos); } // put the old entries first, replace if necessary while ((e = zis.getNextEntry()) != null) { String name = e.getName(); boolean isManifestEntry = equalsIgnoreCase(name, MANIFEST_NAME); if ((jarIndex != null && equalsIgnoreCase(name, INDEX_NAME)) || (Mflag && isManifestEntry)) { continue; } else if (isManifestEntry && ((newManifest != null) || (ename != null))) { foundManifest = true; if (newManifest != null) { // Don't read from the newManifest InputStream, as we // might need it below, and we can't re-read the same data // twice. FileInputStream fis = new FileInputStream(mname); boolean ambiguous = isAmbiguousMainClass(new Manifest(fis)); fis.close(); if (ambiguous) { return false; } } // Update the manifest. Manifest old = new Manifest(zis); if (newManifest != null) { old.read(newManifest); } updateManifest(old, zos); } else { if (!entryMap.containsKey(name)) { // copy the old stuff // do our own compression ZipEntry e2 = new ZipEntry(name); e2.setMethod(e.getMethod()); e2.setTime(e.getTime()); e2.setComment(e.getComment()); e2.setExtra(e.getExtra()); if (e.getMethod() == ZipEntry.STORED) { e2.setSize(e.getSize()); e2.setCrc(e.getCrc()); } zos.putNextEntry(e2); copy(zis, zos); } else { // replace with the new files File f = entryMap.get(name); addFile(zos, f); entryMap.remove(name); entries.remove(f); } } } // add the remaining new files for (File f: entries) { addFile(zos, f); } if (!foundManifest) { if (newManifest != null) { Manifest m = new Manifest(newManifest); updateOk = !isAmbiguousMainClass(m); if (updateOk) { updateManifest(m, zos); } } else if (ename != null) { updateManifest(new Manifest(), zos); } } zis.close(); zos.close(); return updateOk; } private void addIndex(JarIndex index, ZipOutputStream zos) throws IOException { ZipEntry e = new ZipEntry(INDEX_NAME); e.setTime(System.currentTimeMillis()); if (flag0) { CRC32OutputStream os = new CRC32OutputStream(); index.write(os); os.updateEntry(e); } zos.putNextEntry(e); index.write(zos); zos.closeEntry(); } private void updateManifest(Manifest m, ZipOutputStream zos) throws IOException { addVersion(m); addCreatedBy(m); if (ename != null) { addMainClass(m, ename); } ZipEntry e = new ZipEntry(MANIFEST_NAME); e.setTime(System.currentTimeMillis()); if (flag0) { crc32Manifest(e, m); } zos.putNextEntry(e); m.write(zos); if (vflag) { output(getMsg("out.update.manifest")); } } private static final boolean isWinDriveLetter(char c) { return ((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z')); } private String safeName(String name) { if (!pflag) { int len = name.length(); int i = name.lastIndexOf("../"); if (i == -1) { i = 0; } else { i += 3; // strip any dot-dot components } if (File.separatorChar == '\\') { // the spec requests no drive letter. skip if // the entry name has one. while (i < len) { int off = i; if (i + 1 < len && name.charAt(i + 1) == ':' && isWinDriveLetter(name.charAt(i))) { i += 2; } while (i < len && name.charAt(i) == '/') { i++; } if (i == off) { break; } } } else { while (i < len && name.charAt(i) == '/') { i++; } } if (i != 0) { name = name.substring(i); } } return name; } private String entryName(String name) { name = name.replace(File.separatorChar, '/'); String matchPath = ""; for (String path : paths) { if (name.startsWith(path) && (path.length() > matchPath.length())) { matchPath = path; } } name = name.substring(matchPath.length()); name = safeName(name); // the old implementaton doesn't remove // "./" if it was led by "/" (?) if (name.startsWith("./")) { name = name.substring(2); } return name; } private void addVersion(Manifest m) { Attributes global = m.getMainAttributes(); if (global.getValue(Attributes.Name.MANIFEST_VERSION) == null) { global.put(Attributes.Name.MANIFEST_VERSION, VERSION); } } private void addCreatedBy(Manifest m) { Attributes global = m.getMainAttributes(); if (global.getValue(new Attributes.Name("Created-By")) == null) { String javaVendor = System.getProperty("java.vendor"); String jdkVersion = System.getProperty("java.version"); global.put(new Attributes.Name("Created-By"), jdkVersion + " (" + javaVendor + ")"); } } private void addMainClass(Manifest m, String mainApp) { Attributes global = m.getMainAttributes(); // overrides any existing Main-Class attribute global.put(Attributes.Name.MAIN_CLASS, mainApp); } private boolean isAmbiguousMainClass(Manifest m) { if (ename != null) { Attributes global = m.getMainAttributes(); if ((global.get(Attributes.Name.MAIN_CLASS) != null)) { error(getMsg("error.bad.eflag")); usageError(); return true; } } return false; }
Adds a new file entry to the ZIP output stream.
/** * Adds a new file entry to the ZIP output stream. */
void addFile(ZipOutputStream zos, File file) throws IOException { String name = file.getPath(); boolean isDir = file.isDirectory(); if (isDir) { name = name.endsWith(File.separator) ? name : (name + File.separator); } name = entryName(name); if (name.equals("") || name.equals(".") || name.equals(zname)) { return; } else if ((name.equals(MANIFEST_DIR) || name.equals(MANIFEST_NAME)) && !Mflag) { if (vflag) { output(formatMsg("out.ignore.entry", name)); } return; } long size = isDir ? 0 : file.length(); if (vflag) { out.print(formatMsg("out.adding", name)); } ZipEntry e = new ZipEntry(name); e.setTime(file.lastModified()); if (size == 0) { e.setMethod(ZipEntry.STORED); e.setSize(0); e.setCrc(0); } else if (flag0) { crc32File(e, file); } zos.putNextEntry(e); if (!isDir) { copy(file, zos); } zos.closeEntry(); /* report how much compression occurred. */ if (vflag) { size = e.getSize(); long csize = e.getCompressedSize(); out.print(formatMsg2("out.size", String.valueOf(size), String.valueOf(csize))); if (e.getMethod() == ZipEntry.DEFLATED) { long ratio = 0; if (size != 0) { ratio = ((size - csize) * 100) / size; } output(formatMsg("out.deflated", String.valueOf(ratio))); } else { output(getMsg("out.stored")); } } }
A buffer for use only by copy(InputStream, OutputStream). Not as clean as allocating a new buffer as needed by copy, but significantly more efficient.
/** * A buffer for use only by copy(InputStream, OutputStream). * Not as clean as allocating a new buffer as needed by copy, * but significantly more efficient. */
private byte[] copyBuf = new byte[8192];
Copies all bytes from the input stream to the output stream. Does not close or flush either stream.
Params:
  • from – the input stream to read from
  • to – the output stream to write to
Throws:
/** * Copies all bytes from the input stream to the output stream. * Does not close or flush either stream. * * @param from the input stream to read from * @param to the output stream to write to * @throws IOException if an I/O error occurs */
private void copy(InputStream from, OutputStream to) throws IOException { int n; while ((n = from.read(copyBuf)) != -1) to.write(copyBuf, 0, n); }
Copies all bytes from the input file to the output stream. Does not close or flush the output stream.
Params:
  • from – the input file to read from
  • to – the output stream to write to
Throws:
/** * Copies all bytes from the input file to the output stream. * Does not close or flush the output stream. * * @param from the input file to read from * @param to the output stream to write to * @throws IOException if an I/O error occurs */
private void copy(File from, OutputStream to) throws IOException { InputStream in = new FileInputStream(from); try { copy(in, to); } finally { in.close(); } }
Copies all bytes from the input stream to the output file. Does not close the input stream.
Params:
  • from – the input stream to read from
  • to – the output file to write to
Throws:
/** * Copies all bytes from the input stream to the output file. * Does not close the input stream. * * @param from the input stream to read from * @param to the output file to write to * @throws IOException if an I/O error occurs */
private void copy(InputStream from, File to) throws IOException { OutputStream out = new FileOutputStream(to); try { copy(from, out); } finally { out.close(); } }
Computes the crc32 of a Manifest. This is necessary when the ZipOutputStream is in STORED mode.
/** * Computes the crc32 of a Manifest. This is necessary when the * ZipOutputStream is in STORED mode. */
private void crc32Manifest(ZipEntry e, Manifest m) throws IOException { CRC32OutputStream os = new CRC32OutputStream(); m.write(os); os.updateEntry(e); }
Computes the crc32 of a File. This is necessary when the ZipOutputStream is in STORED mode.
/** * Computes the crc32 of a File. This is necessary when the * ZipOutputStream is in STORED mode. */
private void crc32File(ZipEntry e, File f) throws IOException { CRC32OutputStream os = new CRC32OutputStream(); copy(f, os); if (os.n != f.length()) { throw new JarException(formatMsg( "error.incorrect.length", f.getPath())); } os.updateEntry(e); } void replaceFSC(String files[]) { if (files != null) { for (String file : files) { file = file.replace(File.separatorChar, '/'); } } } @SuppressWarnings("serial") Set<ZipEntry> newDirSet() { return new HashSet<ZipEntry>() { public boolean add(ZipEntry e) { return ((e == null || useExtractionTime) ? false : super.add(e)); }}; } void updateLastModifiedTime(Set<ZipEntry> zes) throws IOException { for (ZipEntry ze : zes) { long lastModified = ze.getTime(); if (lastModified != -1) { String name = safeName(ze.getName().replace(File.separatorChar, '/')); if (name.length() != 0) { File f = new File(name.replace('/', File.separatorChar)); f.setLastModified(lastModified); } } } }
Extracts specified entries from JAR file.
/** * Extracts specified entries from JAR file. */
void extract(InputStream in, String files[]) throws IOException { ZipInputStream zis = new ZipInputStream(in); ZipEntry e; // Set of all directory entries specified in archive. Disallows // null entries. Disallows all entries if using pre-6.0 behavior. Set<ZipEntry> dirs = newDirSet(); while ((e = zis.getNextEntry()) != null) { if (files == null) { dirs.add(extractFile(zis, e)); } else { String name = e.getName(); for (String file : files) { if (name.startsWith(file)) { dirs.add(extractFile(zis, e)); break; } } } } // Update timestamps of directories specified in archive with their // timestamps as given in the archive. We do this after extraction, // instead of during, because creating a file in a directory changes // that directory's timestamp. updateLastModifiedTime(dirs); }
Extracts specified entries from JAR file, via ZipFile.
/** * Extracts specified entries from JAR file, via ZipFile. */
void extract(String fname, String files[]) throws IOException { ZipFile zf = new ZipFile(fname); Set<ZipEntry> dirs = newDirSet(); Enumeration<? extends ZipEntry> zes = zf.entries(); while (zes.hasMoreElements()) { ZipEntry e = zes.nextElement(); if (files == null) { dirs.add(extractFile(zf.getInputStream(e), e)); } else { String name = e.getName(); for (String file : files) { if (name.startsWith(file)) { dirs.add(extractFile(zf.getInputStream(e), e)); break; } } } } zf.close(); updateLastModifiedTime(dirs); }
Extracts next entry from JAR file, creating directories as needed. If the entry is for a directory which doesn't exist prior to this invocation, returns that entry, otherwise returns null.
/** * Extracts next entry from JAR file, creating directories as needed. If * the entry is for a directory which doesn't exist prior to this * invocation, returns that entry, otherwise returns null. */
ZipEntry extractFile(InputStream is, ZipEntry e) throws IOException { ZipEntry rc = null; // The spec requres all slashes MUST be forward '/', it is possible // an offending zip/jar entry may uses the backwards slash in its // name. It might cause problem on Windows platform as it skips // our "safe" check for leading slahs and dot-dot. So replace them // with '/'. String name = safeName(e.getName().replace(File.separatorChar, '/')); if (name.length() == 0) { return rc; // leading '/' or 'dot-dot' only path } File f = new File(name.replace('/', File.separatorChar)); if (e.isDirectory()) { if (f.exists()) { if (!f.isDirectory()) { throw new IOException(formatMsg("error.create.dir", f.getPath())); } } else { if (!f.mkdirs()) { throw new IOException(formatMsg("error.create.dir", f.getPath())); } else { rc = e; } } if (vflag) { output(formatMsg("out.create", name)); } } else { if (f.getParent() != null) { File d = new File(f.getParent()); if (!d.exists() && !d.mkdirs() || !d.isDirectory()) { throw new IOException(formatMsg( "error.create.dir", d.getPath())); } } try { copy(is, f); } finally { if (is instanceof ZipInputStream) ((ZipInputStream)is).closeEntry(); else is.close(); } if (vflag) { if (e.getMethod() == ZipEntry.DEFLATED) { output(formatMsg("out.inflated", name)); } else { output(formatMsg("out.extracted", name)); } } } if (!useExtractionTime) { long lastModified = e.getTime(); if (lastModified != -1) { f.setLastModified(lastModified); } } return rc; }
Lists contents of JAR file.
/** * Lists contents of JAR file. */
void list(InputStream in, String files[]) throws IOException { ZipInputStream zis = new ZipInputStream(in); ZipEntry e; while ((e = zis.getNextEntry()) != null) { /* * In the case of a compressed (deflated) entry, the entry size * is stored immediately following the entry data and cannot be * determined until the entry is fully read. Therefore, we close * the entry first before printing out its attributes. */ zis.closeEntry(); printEntry(e, files); } }
Lists contents of JAR file, via ZipFile.
/** * Lists contents of JAR file, via ZipFile. */
void list(String fname, String files[]) throws IOException { ZipFile zf = new ZipFile(fname); Enumeration<? extends ZipEntry> zes = zf.entries(); while (zes.hasMoreElements()) { printEntry(zes.nextElement(), files); } zf.close(); }
Outputs the class index table to the INDEX.LIST file of the root jar file.
/** * Outputs the class index table to the INDEX.LIST file of the * root jar file. */
void dumpIndex(String rootjar, JarIndex index) throws IOException { File jarFile = new File(rootjar); File tmpFile = createTempFileInSameDirectoryAs(jarFile); try { if (update(new FileInputStream(jarFile), new FileOutputStream(tmpFile), null, index)) { jarFile.delete(); if (! tmpFile.renameTo(jarFile)) throw new IOException(getMsg("error.write.file")); } } finally { tmpFile.delete(); } } private HashSet<String> jarPaths = new HashSet<String>();
Generates the transitive closure of the Class-Path attribute for the specified jar file.
/** * Generates the transitive closure of the Class-Path attribute for * the specified jar file. */
List<String> getJarPath(String jar) throws IOException { List<String> files = new ArrayList<String>(); files.add(jar); jarPaths.add(jar); // take out the current path String path = jar.substring(0, Math.max(0, jar.lastIndexOf('/') + 1)); // class path attribute will give us jar file name with // '/' as separators, so we need to change them to the // appropriate one before we open the jar file. JarFile rf = new JarFile(jar.replace('/', File.separatorChar)); if (rf != null) { Manifest man = rf.getManifest(); if (man != null) { Attributes attr = man.getMainAttributes(); if (attr != null) { String value = attr.getValue(Attributes.Name.CLASS_PATH); if (value != null) { StringTokenizer st = new StringTokenizer(value); while (st.hasMoreTokens()) { String ajar = st.nextToken(); if (!ajar.endsWith("/")) { // it is a jar file ajar = path.concat(ajar); /* check on cyclic dependency */ if (! jarPaths.contains(ajar)) { files.addAll(getJarPath(ajar)); } } } } } } } rf.close(); return files; }
Generates class index file for the specified root jar file.
/** * Generates class index file for the specified root jar file. */
void genIndex(String rootjar, String[] files) throws IOException { List<String> jars = getJarPath(rootjar); int njars = jars.size(); String[] jarfiles; if (njars == 1 && files != null) { // no class-path attribute defined in rootjar, will // use command line specified list of jars for (int i = 0; i < files.length; i++) { jars.addAll(getJarPath(files[i])); } njars = jars.size(); } jarfiles = jars.toArray(new String[njars]); JarIndex index = new JarIndex(jarfiles); dumpIndex(rootjar, index); }
Prints entry information, if requested.
/** * Prints entry information, if requested. */
void printEntry(ZipEntry e, String[] files) throws IOException { if (files == null) { printEntry(e); } else { String name = e.getName(); for (String file : files) { if (name.startsWith(file)) { printEntry(e); return; } } } }
Prints entry information.
/** * Prints entry information. */
void printEntry(ZipEntry e) throws IOException { if (vflag) { StringBuilder sb = new StringBuilder(); String s = Long.toString(e.getSize()); for (int i = 6 - s.length(); i > 0; --i) { sb.append(' '); } sb.append(s).append(' ').append(new Date(e.getTime()).toString()); sb.append(' ').append(e.getName()); output(sb.toString()); } else { output(e.getName()); } }
Prints usage message.
/** * Prints usage message. */
void usageError() { error(getMsg("usage")); }
A fatal exception has been caught. No recovery possible
/** * A fatal exception has been caught. No recovery possible */
void fatalError(Exception e) { e.printStackTrace(); }
A fatal condition has been detected; message is "s". No recovery possible
/** * A fatal condition has been detected; message is "s". * No recovery possible */
void fatalError(String s) { error(program + ": " + s); }
Print an output message; like verbose output and the like
/** * Print an output message; like verbose output and the like */
protected void output(String s) { out.println(s); }
Print an error mesage; like something is broken
/** * Print an error mesage; like something is broken */
protected void error(String s) { err.println(s); }
Main routine to start program.
/** * Main routine to start program. */
public static void main(String args[]) { Main jartool = new Main(System.out, System.err, "jar"); System.exit(jartool.run(args) ? 0 : 1); }
An OutputStream that doesn't send its output anywhere, (but could). It's here to find the CRC32 of an input file, necessary for STORED mode in ZIP.
/** * An OutputStream that doesn't send its output anywhere, (but could). * It's here to find the CRC32 of an input file, necessary for STORED * mode in ZIP. */
private static class CRC32OutputStream extends java.io.OutputStream { final CRC32 crc = new CRC32(); long n = 0; CRC32OutputStream() {} public void write(int r) throws IOException { crc.update(r); n++; } public void write(byte[] b, int off, int len) throws IOException { crc.update(b, off, len); n += len; }
Updates a ZipEntry which describes the data read by this output stream, in STORED mode.
/** * Updates a ZipEntry which describes the data read by this * output stream, in STORED mode. */
public void updateEntry(ZipEntry e) { e.setMethod(ZipEntry.STORED); e.setSize(n); e.setCrc(crc.getValue()); } } }