Examples of org.apache.tools.tar.TarEntry

org.apache.tools.tar.TarEntry
This class represents an entry in a Tar archive. It consists of the entry's header, as well as the entry's File. Entries can be instantiated in one of three ways, depending on how they are to be used.
TarEntries that are created from the header bytes read from an archive are instantiated with the TarEntry( byte[] ) constructor. These entries will be used when extracting from or listing the contents of an archive. These entries have their header filled in using the header bytes. They also set the File to null, since they reference an archive entry not a file.
TarEntries that are created from Files that are to be written into an archive are instantiated with the TarEntry( File ) constructor. These entries have their header filled in using the File's information. They also keep a reference to the File for convenience when writing entries.
Finally, TarEntries can be constructed from nothing but a name. This allows the programmer to construct the entry by hand, for instance when only an InputStream is available for writing to the archive, and the header information is constructed from other information. In this case the header fields are set to defaults and the File is set to null.
The C structure for a Tar Entry's header is:
```
 struct header { char name[NAMSIZ]; char mode[8]; char uid[8]; char gid[8]; char size[12]; char mtime[12]; char chksum[8]; char linkflag; char linkname[NAMSIZ]; char magic[8]; char uname[TUNMLEN]; char gname[TGNMLEN]; char devmajor[8]; char devminor[8]; } header; 
```

    @Override
    public void analyze(Document doc, StreamSource src, Writer xrefOut) throws IOException {
        ArrayList<String> names = new ArrayList<>();


        try (TarInputStream zis = new TarInputStream(src.getStream())) {
            TarEntry entry;
            while ((entry = zis.getNextEntry()) != null) {
                String name = entry.getName();
                names.add(name);
                if (xrefOut != null) {
                    Util.htmlize(name, xrefOut);
                    xrefOut.append("<br/>");
                }

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        try {
            tis =
                new TarInputStream(compression.decompress(name,
                                                          new BufferedInputStream(stream)));
            log("Expanding: " + name + " into " + dir, Project.MSG_INFO);
            TarEntry te = null;
            boolean empty = true;
            FileNameMapper mapper = getMapper();
            while ((te = tis.getNextEntry()) != null) {
                empty = false;
                extractFile(FileUtils.getFileUtils(), null, dir, tis,
                            te.getName(), te.getModTime(),
                            te.isDirectory(), mapper);
            }
            if (empty && getFailOnEmptyArchive()) {
                throw new BuildException("archive '" + name + "' is empty");
            }
            log("expand complete", Project.MSG_VERBOSE);

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        if (isReference()) {
            return ((Resource) getCheckedRef()).getInputStream();
        }
        Resource archive = getArchive();
        final TarInputStream i = new TarInputStream(archive.getInputStream());
        TarEntry te = null;
        while ((te = i.getNextEntry()) != null) {
            if (te.getName().equals(getName())) {
                return i;
            }
        }


        FileUtils.close(i);

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    protected void fetchEntry() {
        Resource archive = getArchive();
        TarInputStream i = null;
        try {
            i = new TarInputStream(archive.getInputStream());
            TarEntry te = null;
            while ((te = i.getNextEntry()) != null) {
                if (te.getName().equals(getName())) {
                    setEntry(te);
                    return;
                }
            }
        } catch (IOException e) {

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     * patterns and didn't match any exclude patterns.
     */
    protected void fillMapsFromArchive(Resource src, String encoding,
                                       Map fileEntries, Map matchFileEntries,
                                       Map dirEntries, Map matchDirEntries) {
        TarEntry entry = null;
        TarInputStream ti = null;


        try {
            try {
                ti = new TarInputStream(src.getInputStream());
            } catch (IOException ex) {
                throw new BuildException("problem opening " + srcFile, ex);
            }
            while ((entry = ti.getNextEntry()) != null) {
                Resource r = new TarResource(src, entry);
                String name = entry.getName();
                if (entry.isDirectory()) {
                    name = trimSeparator(name);
                    dirEntries.put(name, r);
                    if (match(name)) {
                        matchDirEntries.put(name, r);
                    }

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                        + " longer than " + TarConstants.NAMELEN
                        + "characters.", getLocation());
            }
        }


        TarEntry te = new TarEntry(vPath, preserveLeadingSlashes);
        te.setModTime(r.getLastModified());
        // preserve permissions
        if (r instanceof ArchiveResource) {
            ArchiveResource ar = (ArchiveResource) r;
            te.setMode(ar.getMode());
            if (r instanceof TarResource) {
                TarResource tr = (TarResource) r;
                te.setUserName(tr.getUserName());
                te.setUserId(tr.getUid());
                te.setGroupName(tr.getGroup());
                te.setGroupId(tr.getGid());
            }
        }


        if (!r.isDirectory()) {
            if (r.size() > TarConstants.MAXSIZE) {
                throw new BuildException(
                    "Resource: " + r + " larger than "
                    + TarConstants.MAXSIZE + " bytes.");
            }
            te.setSize(r.getSize());
            // override permissions if set explicitly
            if (tarFileSet != null && tarFileSet.hasFileModeBeenSet()) {
                te.setMode(tarFileSet.getMode());
            }
        } else if (tarFileSet != null && tarFileSet.hasDirModeBeenSet()) {
            // override permissions if set explicitly
            te.setMode(tarFileSet.getDirMode(this.getProject()));
        }


        if (tarFileSet != null) {
            // only override permissions if set explicitly
            if (tarFileSet.hasUserNameBeenSet()) {
                te.setUserName(tarFileSet.getUserName());
            }
            if (tarFileSet.hasGroupBeenSet()) {
                te.setGroupName(tarFileSet.getGroup());
            }
            if (tarFileSet.hasUserIdBeenSet()) {
                te.setUserId(tarFileSet.getUid());
            }
            if (tarFileSet.hasGroupIdBeenSet()) {
                te.setGroupId(tarFileSet.getGid());
            }
        }


        InputStream in = null;
        try {

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  }


  protected void readTGZFile(byte[] fileBytes) throws IOException {
    contents.clear();
    TarInputStream tin = new TarInputStream(new GZIPInputStream(new ByteArrayInputStream(fileBytes)));
    TarEntry tarEntry = tin.getNextEntry();
    while (tarEntry != null) {
      if (!tarEntry.isDirectory()) {
        // tar.getName()
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        tin.copyEntryContents(os);
        os.close();
        contents.put(tarEntry.getName(), os.toByteArray());
      }
      tarEntry = tin.getNextEntry();
    }
    tin.close();
  }

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  }


  protected void readTarFile(byte[] fileBytes) throws IOException {
    contents.clear();
    TarInputStream tin = new TarInputStream(new ByteArrayInputStream(fileBytes));
    TarEntry tarEntry = tin.getNextEntry();
    while (tarEntry != null) {
      if (!tarEntry.isDirectory()) {
        // tar.getName()
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        tin.copyEntryContents(os);
        os.close();
        contents.put(tarEntry.getName(), os.toByteArray());
      }
      tarEntry = tin.getNextEntry();
    }
    tin.close();
  }

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      targetFile.getParentFile().mkdirs();
      TarOutputStream out = new TarOutputStream(new GZIPOutputStream(new FileOutputStream(targetFile)));
      out.setLongFileMode(TarOutputStream.LONGFILE_GNU);
      
      for( String f : fileList ) {
        TarEntry e = new TarEntry(sourceDir.getName() + "/" + f);
        File tarFile = new File(sourceDir, f);
        if( tarFile.canExecute() ) {
          e.setMode(0755);
        }
        e.setSize(tarFile.length());
        out.putNextEntry(e);
        
        FileInputStream in = new FileInputStream(tarFile);
        byte[] buf = new byte[1024];
        int l;

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  private static File uncompress(File compressedFile, File targetDirectory) {
    File targetDir = null;
    if( compressedFile.getName().endsWith(".tar.gz") ) {
      try {
        TarInputStream in = new TarInputStream(new GZIPInputStream(new FileInputStream(compressedFile)));
        TarEntry e;
        while( (e = in.getNextEntry()) != null ) {
          if( e.isDirectory() ) {
            File f = new File(targetDirectory,e.getName());
            f.mkdirs();
            if( targetDir == null ) {
              targetDir = f;
            }
          } else {
            File f = new File(targetDirectory,e.getName());
            if( ! f.getParentFile().exists() ) {
              f.getParentFile().mkdirs();
            }
            in.copyEntryContents(new FileOutputStream(f));
            
            int m = e.getMode();
            if( (m & OWNER_EXEC) == OWNER_EXEC 
                || (m & GROUP_EXEC) == GROUP_EXEC 
                || (m & OTHER_EXEC) == OTHER_EXEC ) {
              f.setExecutable(true, false);
            } else if( e.getLinkName() != null && e.getLinkName().trim().length() > 0 ) {
              //TODO Handle symlinks
//              System.err.println("A LINK: " + e.getLinkName());
            }
          }
        }
        in.close();
        
        if( targetDir == null ) {
          targetDir = new File(targetDirectory,"eclipse");
        }
      } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
      }
    } else if( compressedFile.getName().endsWith(".zip") ) {
      try {
        ZipInputStream in = new ZipInputStream(new FileInputStream(compressedFile));
        ZipEntry e;
        while( (e = in.getNextEntry()) != null ) {
          if( e.isDirectory() ) {
            File f = new File(targetDirectory,e.getName());
            f.mkdirs();
            if( targetDir == null ) {
              targetDir = f;
            }
          } else {
            File f = new File(targetDirectory,e.getName());
            if( ! f.getParentFile().exists() ) {
              f.getParentFile().mkdirs();
            }
            FileOutputStream out = new FileOutputStream(f);
            byte[] buf = new byte[1024];
            int l;
            while( (l = in.read(buf, 0, 1024)) != -1 ) {
              out.write(buf,0,l);
            }
            out.close();
          }
          in.closeEntry();
        }
        in.close();
        
        if( targetDir == null ) {
          targetDir = new File(targetDirectory,"eclipse");
        }
      } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
      }
    }

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