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authorTatsuya Kinoshita <tats@vega.ocn.ne.jp>2011-05-04 07:18:09 +0000
committerTatsuya Kinoshita <tats@vega.ocn.ne.jp>2011-05-04 07:18:09 +0000
commit5f8e0f8ef9a422691dd72e8a953a42a41478fcb4 (patch)
tree4b2df4796a534793648b3c4fc532fc36bd0cd525 /inflate.c
parentReleasing debian version 0.3-2.4 (diff)
downloadw3m-5f8e0f8ef9a422691dd72e8a953a42a41478fcb4.tar.gz
w3m-5f8e0f8ef9a422691dd72e8a953a42a41478fcb4.zip
Releasing debian version 0.5.1-1debian/0.5.1-1
Diffstat (limited to 'inflate.c')
-rw-r--r--inflate.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/inflate.c b/inflate.c
new file mode 100644
index 0000000..c1847fa
--- /dev/null
+++ b/inflate.c
@@ -0,0 +1,83 @@
+/* $Id: inflate.c,v 1.7 2002/01/31 18:28:24 ukai Exp $ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <zlib.h>
+
+#undef BUFSIZE
+#define BUFSIZE 4096
+
+static char dummy_head[1 + 1] = {
+ 0x8 + 0x7 * 0x10,
+ (((0x8 + 0x7 * 0x10) * 0x100 + 30) / 31 * 31) & 0xFF,
+};
+
+int
+main(int argc, char **argv)
+{
+ z_stream s;
+ FILE *f;
+ char inbuf[BUFSIZE], outbuf[BUFSIZE];
+ int status, flush, retry = 0, len = 0;
+
+ if (argc > 1) {
+ f = fopen(argv[1], "rb");
+ if (!f) {
+ fprintf(stderr, "%s: cannot open %s\n", argv[0], argv[1]);
+ exit(1);
+ }
+ }
+ else
+ f = stdin;
+
+ s.zalloc = Z_NULL;
+ s.zfree = Z_NULL;
+ s.opaque = Z_NULL;
+ status = inflateInit(&s);
+ if (status != Z_OK) {
+ fprintf(stderr, "%s: inflateInit() %s\n", argv[0], zError(status));
+ exit(1);
+ }
+ s.avail_in = 0;
+ s.next_out = (Bytef *) outbuf;
+ s.avail_out = sizeof(outbuf);
+ flush = Z_NO_FLUSH;
+ while (1) {
+ if (s.avail_in == 0) {
+ s.next_in = (Bytef *) inbuf;
+ len = s.avail_in = fread(inbuf, 1, sizeof(inbuf), f);
+ }
+ status = inflate(&s, flush);
+ if (status == Z_STREAM_END || status == Z_BUF_ERROR) {
+ if (sizeof(outbuf) - s.avail_out)
+ fwrite(outbuf, 1, sizeof(outbuf) - s.avail_out, stdout);
+ break;
+ }
+ if (status == Z_DATA_ERROR && !retry++) {
+ status = inflateReset(&s);
+ if (status != Z_OK) {
+ fprintf(stderr, "%s: inflateReset() %s\n", argv[0],
+ zError(status));
+ exit(1);
+ }
+ s.next_in = (Bytef *) dummy_head;
+ s.avail_in = sizeof(dummy_head);
+ status = inflate(&s, flush);
+ s.next_in = (Bytef *) inbuf;
+ s.avail_in = len;
+ continue;
+ }
+ if (status != Z_OK) {
+ fprintf(stderr, "%s: inflate() %s\n", argv[0], zError(status));
+ exit(1);
+ }
+ if (s.avail_out == 0) {
+ fwrite(outbuf, 1, sizeof(outbuf), stdout);
+ s.next_out = (Bytef *) outbuf;
+ s.avail_out = sizeof(outbuf);
+ }
+ retry = 1;
+ }
+ inflateEnd(&s);
+ fclose(f);
+ return 0;
+}