683
684 /*
685 * Inner class implementing the input stream used to read a
686 * (possibly compressed) zip file entry.
687 */
688 private class ZipFileInputStream extends InputStream {
689 private volatile boolean closeRequested = false;
690 protected long jzentry; // address of jzentry data
691 private long pos; // current position within entry data
692 protected long rem; // number of remaining bytes within entry
693 protected long size; // uncompressed size of this entry
694
695 ZipFileInputStream(long jzentry) {
696 pos = 0;
697 rem = getEntryCSize(jzentry);
698 size = getEntrySize(jzentry);
699 this.jzentry = jzentry;
700 }
701
702 public int read(byte b[], int off, int len) throws IOException {
703 if (rem == 0) {
704 return -1;
705 }
706 if (len <= 0) {
707 return 0;
708 }
709 if (len > rem) {
710 len = (int) rem;
711 }
712 synchronized (ZipFile.this) {
713 ensureOpenOrZipException();
714
715 len = ZipFile.read(ZipFile.this.jzfile, jzentry, pos, b,
716 off, len);
717 }
718 if (len > 0) {
719 pos += len;
720 rem -= len;
721 }
722 if (rem == 0) {
723 close();
724 }
725 return len;
726 }
727
728 public int read() throws IOException {
729 byte[] b = new byte[1];
730 if (read(b, 0, 1) == 1) {
731 return b[0] & 0xff;
732 } else {
733 return -1;
734 }
735 }
736
737 public long skip(long n) {
738 if (n > rem)
739 n = rem;
740 pos += n;
741 rem -= n;
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683
684 /*
685 * Inner class implementing the input stream used to read a
686 * (possibly compressed) zip file entry.
687 */
688 private class ZipFileInputStream extends InputStream {
689 private volatile boolean closeRequested = false;
690 protected long jzentry; // address of jzentry data
691 private long pos; // current position within entry data
692 protected long rem; // number of remaining bytes within entry
693 protected long size; // uncompressed size of this entry
694
695 ZipFileInputStream(long jzentry) {
696 pos = 0;
697 rem = getEntryCSize(jzentry);
698 size = getEntrySize(jzentry);
699 this.jzentry = jzentry;
700 }
701
702 public int read(byte b[], int off, int len) throws IOException {
703 synchronized (ZipFile.this) {
704 if (rem == 0) {
705 return -1;
706 }
707 if (len <= 0) {
708 return 0;
709 }
710 if (len > rem) {
711 len = (int) rem;
712 }
713
714 ensureOpenOrZipException();
715 len = ZipFile.read(ZipFile.this.jzfile, jzentry, pos, b,
716 off, len);
717 if (len > 0) {
718 pos += len;
719 rem -= len;
720 }
721 }
722 if (rem == 0) {
723 close();
724 }
725 return len;
726 }
727
728 public int read() throws IOException {
729 byte[] b = new byte[1];
730 if (read(b, 0, 1) == 1) {
731 return b[0] & 0xff;
732 } else {
733 return -1;
734 }
735 }
736
737 public long skip(long n) {
738 if (n > rem)
739 n = rem;
740 pos += n;
741 rem -= n;
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