Method writeArchive

src/main/java/me/coley/recaf/command/impl/Export.java:139–190

Writes a map to an archive. @param compress Enable zip compression. @param output File location of jar. @param content Contents to write to location. @throws IOException When the jar file cannot be written to.

(boolean compress, File output, Map<String, byte[]> content)

	 * 		When the jar file cannot be written to.
	 */
	public static void writeArchive(boolean compress, File output, Map<String, byte[]> content) throws IOException {
		String extension = IOUtil.getExtension(output.toPath());
		// Use buffered streams, reduce overall file write operations
		OutputStream os = new BufferedOutputStream(Files.newOutputStream(output.toPath()), 1048576);
		try (ZipOutputStream jos = ("zip".equals(extension)) ? new ZipOutputStream(os) :
				/* Let's assume it's a jar */ new JarOutputStream(os)) {
			VMUtil.patchZipOutput(jos);
			PluginsManager pluginsManager = PluginsManager.getInstance();
			Set<String> dirsVisited = new HashSet<>();
			// Contents is iterated in sorted order (because 'archiveContent' is TreeMap).
			// This allows us to insert directory entries before file entries of that directory occur.
			CRC32 crc = new CRC32();
			for (Map.Entry<String, byte[]> entry : content.entrySet()) {
				String key = entry.getKey();
				byte[] out = entry.getValue();
				for (ExportInterceptorPlugin interceptor : pluginsManager.ofType(ExportInterceptorPlugin.class)) {
					out = interceptor.intercept(key, out);
				}
				// Write directories for upcoming entries if necessary
				// - Ugly, but does the job.
				if (key.contains("/")) {
					// Record directories
					String parent = key;
					List<String> toAdd = new ArrayList<>();
					do {
						parent = parent.substring(0, parent.lastIndexOf('/'));
						if (dirsVisited.add(parent)) {
							toAdd.add(0, parent + '/');
						} else break;
					} while (parent.contains("/"));
					// Put directories in order of depth
					for (String dir : toAdd) {
						jos.putNextEntry(new JarEntry(dir));
						jos.closeEntry();
					}
				}
				// Write entry content
				crc.reset();
				crc.update(out, 0, out.length);
				JarEntry outEntry = new JarEntry(key);
				outEntry.setMethod(compress ? ZipEntry.DEFLATED : ZipEntry.STORED);
				if (!compress) {
					outEntry.setSize(out.length);
					outEntry.setCompressedSize(out.length);
				}
				outEntry.setCrc(crc.getValue());
				jos.putNextEntry(outEntry);
				jos.write(out);
				jos.closeEntry();
			}
		}
	}

	private void put(Map<String, byte[]> content, JavaResource res) {
		content.putAll(res.getFiles());