1b020138f9
* file.c (uncompress_stream): redirect stderr * inflate.c (main): print error message From: Fumitoshi UKAI <ukai@debian.or.jp>
64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
/* $Id: inflate.c,v 1.4 2002/01/31 09:43:15 ukai Exp $ */
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#include <stdio.h>
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#include <stdlib.h>
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#include <zlib.h>
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#undef BUFSIZE
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#define BUFSIZE 4096
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int
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main(int argc, char **argv)
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{
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z_stream s;
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FILE *f;
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char inbuf[BUFSIZE], outbuf[BUFSIZE];
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int status, flush;
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if (argc > 1) {
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f = fopen(argv[1], "rb");
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if (!f) {
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fprintf(stderr, "%s: cannot open %s\n", argv[0], argv[1]);
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exit(1);
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}
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}
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else
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f = stdin;
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s.zalloc = Z_NULL;
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s.zfree = Z_NULL;
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s.opaque = Z_NULL;
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status = inflateInit(&s);
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if (status != Z_OK) {
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fprintf(stderr, "%s: inflateInit() %s\n", argv[0], zError(status));
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exit(1);
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}
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s.avail_in = 0;
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s.next_out = (Bytef *) outbuf;
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s.avail_out = sizeof(outbuf);
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flush = Z_NO_FLUSH;
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while (1) {
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if (s.avail_in == 0) {
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s.next_in = (Bytef *) inbuf;
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s.avail_in = fread(inbuf, 1, sizeof(inbuf), f);
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}
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status = inflate(&s, flush);
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if (status == Z_STREAM_END) {
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if (sizeof(outbuf) - s.avail_out)
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fwrite(outbuf, 1, sizeof(outbuf) - s.avail_out, stdout);
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break;
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}
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if (status != Z_OK) {
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fprintf(stderr, "%s: inflate() %s\n", argv[0], zError(status));
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exit(1);
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}
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if (s.avail_out == 0) {
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fwrite(outbuf, 1, sizeof(outbuf), stdout);
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s.next_out = (Bytef *) outbuf;
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s.avail_out = sizeof(outbuf);
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}
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}
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inflateEnd(&s);
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fclose(f);
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return 0;
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}
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