364 * is reached. Returns the number of bytes read.
365 */
366 public int readLine(byte[] b, int off, int len) throws IOException {
367 byte[] tbuf = this.buf;
368 int total = 0;
369 while (total < len) {
370 int avail = count - pos;
371 if (avail <= 0) {
372 fill();
373 avail = count - pos;
374 if (avail <= 0) {
375 return -1;
376 }
377 }
378 int n = len - total;
379 if (n > avail) {
380 n = avail;
381 }
382 int tpos = pos;
383 int maxpos = tpos + n;
384 while (tpos < maxpos && tbuf[tpos++] != '\n') ;
385 n = tpos - pos;
386 System.arraycopy(tbuf, pos, b, off, n);
387 off += n;
388 total += n;
389 pos = tpos;
390 if (tbuf[tpos-1] == '\n') {
391 break;
392 }
393 }
394 return total;
395 }
396
397 public byte peek() throws IOException {
398 if (pos == count)
399 fill();
400 if (pos == count)
401 return -1; // nothing left in buffer
402 return buf[pos];
403 }
404
405 public int readLine(byte[] b) throws IOException {
406 return readLine(b, 0, b.length);
407 }
408
409 public long skip(long n) throws IOException {
410 if (n <= 0) {
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364 * is reached. Returns the number of bytes read.
365 */
366 public int readLine(byte[] b, int off, int len) throws IOException {
367 byte[] tbuf = this.buf;
368 int total = 0;
369 while (total < len) {
370 int avail = count - pos;
371 if (avail <= 0) {
372 fill();
373 avail = count - pos;
374 if (avail <= 0) {
375 return -1;
376 }
377 }
378 int n = len - total;
379 if (n > avail) {
380 n = avail;
381 }
382 int tpos = pos;
383 int maxpos = tpos + n;
384 byte c = 0;
385 // jar.spec.newline: CRLF | LF | CR (not followed by LF)
386 while (tpos < maxpos && (c = tbuf[tpos++]) != '\n' && c != '\r') ;
387 if (tpos < maxpos && c == '\r' && tbuf[tpos] == '\n') {
388 tpos++;
389 }
390 n = tpos - pos;
391 System.arraycopy(tbuf, pos, b, off, n);
392 off += n;
393 total += n;
394 pos = tpos;
395 if ((c = tbuf[tpos-1]) == '\n' || c == '\r') {
396 break;
397 }
398 }
399 return total;
400 }
401
402 public byte peek() throws IOException {
403 if (pos == count)
404 fill();
405 if (pos == count)
406 return -1; // nothing left in buffer
407 return buf[pos];
408 }
409
410 public int readLine(byte[] b) throws IOException {
411 return readLine(b, 0, b.length);
412 }
413
414 public long skip(long n) throws IOException {
415 if (n <= 0) {
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