22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 /**
27 * IOUtils: A collection of IO-related public static methods.
28 */
29
30 package sun.misc;
31
32 import java.io.EOFException;
33 import java.io.IOException;
34 import java.io.InputStream;
35 import java.util.Arrays;
36
37 public class IOUtils {
38
39 /**
40 * Read up to <code>length</code> of bytes from <code>in</code>
41 * until EOF is detected.
42 * @param in input stream, must not be null
43 * @param length number of bytes to read, -1 or Integer.MAX_VALUE means
44 * read as much as possible
45 * @param readAll if true, an EOFException will be thrown if not enough
46 * bytes are read. Ignored when length is -1 or Integer.MAX_VALUE
47 * @return bytes read
48 * @throws IOException Any IO error or a premature EOF is detected
49 */
50 public static byte[] readFully(InputStream is, int length, boolean readAll)
51 throws IOException {
52 byte[] output = {};
53 if (length == -1) length = Integer.MAX_VALUE;
54 int pos = 0;
55 while (pos < length) {
56 int bytesToRead;
57 if (pos >= output.length) { // Only expand when there's no room
58 bytesToRead = Math.min(length - pos, output.length + 1024);
59 if (output.length < pos + bytesToRead) {
60 output = Arrays.copyOf(output, pos + bytesToRead);
61 }
62 } else {
|
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 /**
27 * IOUtils: A collection of IO-related public static methods.
28 */
29
30 package sun.misc;
31
32 import java.io.EOFException;
33 import java.io.IOException;
34 import java.io.InputStream;
35 import java.util.Arrays;
36
37 public class IOUtils {
38
39 /**
40 * Read up to <code>length</code> of bytes from <code>in</code>
41 * until EOF is detected.
42 * @param is input stream, must not be null
43 * @param length number of bytes to read, -1 or Integer.MAX_VALUE means
44 * read as much as possible
45 * @param readAll if true, an EOFException will be thrown if not enough
46 * bytes are read. Ignored when length is -1 or Integer.MAX_VALUE
47 * @return bytes read
48 * @throws IOException Any IO error or a premature EOF is detected
49 */
50 public static byte[] readFully(InputStream is, int length, boolean readAll)
51 throws IOException {
52 byte[] output = {};
53 if (length == -1) length = Integer.MAX_VALUE;
54 int pos = 0;
55 while (pos < length) {
56 int bytesToRead;
57 if (pos >= output.length) { // Only expand when there's no room
58 bytesToRead = Math.min(length - pos, output.length + 1024);
59 if (output.length < pos + bytesToRead) {
60 output = Arrays.copyOf(output, pos + bytesToRead);
61 }
62 } else {
|