Bug 95888 [Import/Export] Ignore spaces in mode and size fields of tar files
The space character is special in tar files: it is often used instead of a null character for certain fields. Unfortunately, if a space is in the mode or size fields of a tar file, TarInputStream throws an exception. The attached patch fixes this.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/TarInputStream.java
* 
	 * @param in input stream
	 * @param entry skips to this entry in the file
	 * @throws TarException
	 * @throws IOException
	 */
	TarInputStream(InputStream in, TarEntry entry) throws TarException, IOException {
		super(in);
		skipToEntry(entry);
	}
	/**
	 *  The checksum of a tar file header is simply the sum of the bytes in
	 *  the header.
	 * 
	 * @param header
	 * @return checksum
	 */
	private long headerChecksum(byte[] header) {
		long sum = 0;
		for(int i = 0; i < 512; i++) {
			sum += header[i] & 0xff;
		}
		return sum;
	}
	/**
	 * Skips ahead to the position of the given entry in the file.
	 * 
	 * @param entry
	 * @returns false if the entry has already been passed
	 * @throws TarException