/**
* Configures the stream to write prefix file data.
*
* @throws ZipException if other contents have already been written to the output stream
*/
public void startPrefixFile() throws ZipException {
checkNotFinished();
if (!zipData.getEntries().isEmpty() || entry != null) {
throw new ZipException("Cannot add a prefix file after the zip contents have been started.");
}
writingPrefix = true;
}
/**
* Closes the current ZIP entry and positions the stream for writing the next entry. Checks that
* the amount of data written matches the compressed size indicated by the ZipEntry.
*
* @throws ZipException if a ZIP file error has occurred
* @throws IOException if an I/O exception has occurred
*/
private void finishEntry() throws IOException {
if (entry.getCompressedSize() != bytesWritten) {
throw new ZipException(
String.format(
"Number of bytes written for the entry %s (%d) does not"
+ " match the reported compressed size (%d).",
entry.getName(), bytesWritten, entry.getCompressedSize()));
}
zipData.addEntry(entry);
entry = null;
}
/**
* Sets the ZIP file comment.
*
* @param comment the ZIP file comment
* @throws ZipException if the comment is longer than 0xffff bytes
*/
public void setComment(String comment) throws ZipException {
zipData.setComment(comment);
}
/**
* Writes the ZIP file's central directory.
*
* @throws ZipException if a ZIP file error has occurred
* @throws IOException if an I/O exception has occurred
*/
private void writeCentralDirectory() throws IOException {
zipData.setCentralDirectoryOffset(stream.getCount());
CentralDirectory.write(zipData, allowZip64, stream);
}
