65   public static BufferedReader newReader(File file, Charset charset)  in newReader()  argument
68         new InputStreamReader(new FileInputStream(file), charset));  in newReader()
79   public static BufferedWriter newWriter(File file, Charset charset)  in newWriter()  argument
82         new OutputStreamWriter(new FileOutputStream(file), charset));  in newWriter()
93       final File file) {  in newInputStreamSupplier()  argument
94     Preconditions.checkNotNull(file);  in newInputStreamSupplier()
97         return new FileInputStream(file);  in newInputStreamSupplier()
110       File file) {
111     return newOutputStreamSupplier(file, false);
124       final File file, final boolean append) {
125     Preconditions.checkNotNull(file);
128         return new FileOutputStream(file, append);
141   public static InputSupplier<InputStreamReader> newReaderSupplier(File file,
143     return CharStreams.newReaderSupplier(newInputStreamSupplier(file), charset);
154   public static OutputSupplier<OutputStreamWriter> newWriterSupplier(File file,
156     return newWriterSupplier(file, charset, false);
169   public static OutputSupplier<OutputStreamWriter> newWriterSupplier(File file,
171     return CharStreams.newWriterSupplier(newOutputStreamSupplier(file, append),
184   public static byte[] toByteArray(File file) throws IOException {
185     Preconditions.checkArgument(file.length() <= Integer.MAX_VALUE);
186     if (file.length() == 0) {
188       return ByteStreams.toByteArray(newInputStreamSupplier(file));
191       byte[] b = new byte[(int) file.length()];
193       InputStream in = new FileInputStream(file);
213   public static String toString(File file, Charset charset) throws IOException {
214     return new String(toByteArray(file), charset.name());
428   public static void touch(File file) throws IOException {
429     if (!file.createNewFile()
430         && !file.setLastModified(System.currentTimeMillis())) {
431       throw new IOException("Unable to update modification time of " + file);
484     for (File file : files) {
485       deleteRecursively(file);
500   public static void deleteRecursively(File file) throws IOException {
501     if (file.isDirectory()) {
502       deleteDirectoryContents(file);
504     if (!file.delete()) {
505       throw new IOException("Failed to delete " + file);
519   public static String readFirstLine(File file, Charset charset)
521     return CharStreams.readFirstLine(Files.newReaderSupplier(file, charset));
534   public static List<String> readLines(File file, Charset charset)
536     return CharStreams.readLines(Files.newReaderSupplier(file, charset));
549   public static <T> T readLines(File file, Charset charset,
551     return CharStreams.readLines(Files.newReaderSupplier(file, charset),
566   public static <T> T readBytes(File file, ByteProcessor<T> processor)
568     return ByteStreams.readBytes(newInputStreamSupplier(file), processor);
581   public static long getChecksum(File file, Checksum checksum)
583     return ByteStreams.getChecksum(newInputStreamSupplier(file), checksum);
596   public static byte[] getDigest(File file, MessageDigest md)
598     return ByteStreams.getDigest(newInputStreamSupplier(file), md);
617   public static MappedByteBuffer map(File file) throws IOException {
618     return map(file, MapMode.READ_ONLY);
639   public static MappedByteBuffer map(File file, MapMode mode)
641     if (!file.exists()) {
642       throw new FileNotFoundException(file.toString());
644     return map(file, mode, file.length());
668   public static MappedByteBuffer map(File file, MapMode mode, long size)
671         new RandomAccessFile(file, mode == MapMode.READ_ONLY ? "r" : "rw");