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-rw-r--r--zlib/examples/enough.c39
-rw-r--r--zlib/examples/gun.c11
-rw-r--r--zlib/examples/gzappend.c22
-rw-r--r--zlib/examples/gzjoin.c13
-rw-r--r--zlib/examples/gzlog.c21
-rw-r--r--zlib/examples/gzlog.h6
-rw-r--r--zlib/examples/zran.c11
7 files changed, 70 insertions, 53 deletions
diff --git a/zlib/examples/enough.c b/zlib/examples/enough.c
index c40410bad..b99114430 100644
--- a/zlib/examples/enough.c
+++ b/zlib/examples/enough.c
@@ -1,7 +1,7 @@
/* enough.c -- determine the maximum size of inflate's Huffman code tables over
* all possible valid and complete Huffman codes, subject to a length limit.
- * Copyright (C) 2007, 2008 Mark Adler
- * Version 1.3 17 February 2008 Mark Adler
+ * Copyright (C) 2007, 2008, 2012 Mark Adler
+ * Version 1.4 18 August 2012 Mark Adler
*/
/* Version history:
@@ -14,6 +14,9 @@
1.3 17 Feb 2008 Add argument for initial root table size
Fix bug for initial root table size == max - 1
Use a macro to compute the history index
+ 1.4 18 Aug 2012 Avoid shifts more than bits in type (caused endless loop!)
+ Clean up comparisons of different types
+ Clean up code indentation
*/
/*
@@ -236,8 +239,8 @@ local big_t count(int syms, int len, int left)
for (use = least; use <= most; use++) {
got = count(syms - use, len + 1, (left - use) << 1);
sum += got;
- if (got == -1 || sum < got) /* overflow */
- return -1;
+ if (got == (big_t)0 - 1 || sum < got) /* overflow */
+ return (big_t)0 - 1;
}
/* verify that all recursive calls are productive */
@@ -458,6 +461,7 @@ int main(int argc, char **argv)
int n; /* number of symbols to code for this run */
big_t got; /* return value of count() */
big_t sum; /* accumulated number of codes over n */
+ code_t word; /* for counting bits in code_t */
/* set up globals for cleanup() */
code = NULL;
@@ -466,19 +470,19 @@ int main(int argc, char **argv)
/* get arguments -- default to the deflate literal/length code */
syms = 286;
- root = 9;
+ root = 9;
max = 15;
if (argc > 1) {
syms = atoi(argv[1]);
if (argc > 2) {
root = atoi(argv[2]);
- if (argc > 3)
- max = atoi(argv[3]);
- }
+ if (argc > 3)
+ max = atoi(argv[3]);
+ }
}
if (argc > 4 || syms < 2 || root < 1 || max < 1) {
fputs("invalid arguments, need: [sym >= 2 [root >= 1 [max >= 1]]]\n",
- stderr);
+ stderr);
return 1;
}
@@ -487,18 +491,17 @@ int main(int argc, char **argv)
max = syms - 1;
/* determine the number of bits in a code_t */
- n = 0;
- while (((code_t)1 << n) != 0)
- n++;
+ for (n = 0, word = 1; word; n++, word <<= 1)
+ ;
/* make sure that the calculation of most will not overflow */
- if (max > n || syms - 2 >= (((code_t)0 - 1) >> (max - 1))) {
+ if (max > n || (code_t)(syms - 2) >= (((code_t)0 - 1) >> (max - 1))) {
fputs("abort: code length too long for internal types\n", stderr);
return 1;
}
/* reject impossible code requests */
- if (syms - 1 > ((code_t)1 << max) - 1) {
+ if ((code_t)(syms - 1) > ((code_t)1 << max) - 1) {
fprintf(stderr, "%d symbols cannot be coded in %d bits\n",
syms, max);
return 1;
@@ -532,7 +535,7 @@ int main(int argc, char **argv)
for (n = 2; n <= syms; n++) {
got = count(n, 1, 2);
sum += got;
- if (got == -1 || sum < got) { /* overflow */
+ if (got == (big_t)0 - 1 || sum < got) { /* overflow */
fputs("abort: can't count that high!\n", stderr);
cleanup();
return 1;
@@ -556,9 +559,9 @@ int main(int argc, char **argv)
}
/* find and show maximum inflate table usage */
- if (root > max) /* reduce root to max length */
- root = max;
- if (syms < ((code_t)1 << (root + 1)))
+ if (root > max) /* reduce root to max length */
+ root = max;
+ if ((code_t)syms < ((code_t)1 << (root + 1)))
enough(syms);
else
puts("cannot handle minimum code lengths > root");
diff --git a/zlib/examples/gun.c b/zlib/examples/gun.c
index 72b0882ab..89e484fee 100644
--- a/zlib/examples/gun.c
+++ b/zlib/examples/gun.c
@@ -1,7 +1,7 @@
/* gun.c -- simple gunzip to give an example of the use of inflateBack()
- * Copyright (C) 2003, 2005, 2008, 2010 Mark Adler
+ * Copyright (C) 2003, 2005, 2008, 2010, 2012 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
- Version 1.6 17 January 2010 Mark Adler */
+ Version 1.7 12 August 2012 Mark Adler */
/* Version history:
1.0 16 Feb 2003 First version for testing of inflateBack()
@@ -18,6 +18,7 @@
1.4 8 Dec 2006 LZW decompression speed improvements
1.5 9 Feb 2008 Avoid warning in latest version of gcc
1.6 17 Jan 2010 Avoid signed/unsigned comparison warnings
+ 1.7 12 Aug 2012 Update for z_const usage in zlib 1.2.8
*/
/*
@@ -85,7 +86,7 @@ struct ind {
/* Load input buffer, assumed to be empty, and return bytes loaded and a
pointer to them. read() is called until the buffer is full, or until it
returns end-of-file or error. Return 0 on error. */
-local unsigned in(void *in_desc, unsigned char **buf)
+local unsigned in(void *in_desc, z_const unsigned char **buf)
{
int ret;
unsigned len;
@@ -196,7 +197,7 @@ unsigned char match[65280 + 2]; /* buffer for reversed match or gzip
file, read error, or write error (a write error indicated by strm->next_in
not equal to Z_NULL), or Z_DATA_ERROR for invalid input.
*/
-local int lunpipe(unsigned have, unsigned char *next, struct ind *indp,
+local int lunpipe(unsigned have, z_const unsigned char *next, struct ind *indp,
int outfile, z_stream *strm)
{
int last; /* last byte read by NEXT(), or -1 if EOF */
@@ -383,7 +384,7 @@ local int gunpipe(z_stream *strm, int infile, int outfile)
{
int ret, first, last;
unsigned have, flags, len;
- unsigned char *next = NULL;
+ z_const unsigned char *next = NULL;
struct ind ind, *indp;
struct outd outd;
diff --git a/zlib/examples/gzappend.c b/zlib/examples/gzappend.c
index e9e878e11..662dec379 100644
--- a/zlib/examples/gzappend.c
+++ b/zlib/examples/gzappend.c
@@ -1,7 +1,7 @@
/* gzappend -- command to append to a gzip file
- Copyright (C) 2003 Mark Adler, all rights reserved
- version 1.1, 4 Nov 2003
+ Copyright (C) 2003, 2012 Mark Adler, all rights reserved
+ version 1.2, 11 Oct 2012
This software is provided 'as-is', without any express or implied
warranty. In no event will the author be held liable for any damages
@@ -39,6 +39,8 @@
* - Keep gzip file clean on appended file read errors
* - Use in-place rotate instead of auxiliary buffer
* (Why you ask? Because it was fun to write!)
+ * 1.2 11 Oct 2012 - Fix for proper z_const usage
+ * - Check for input buffer malloc failure
*/
/*
@@ -170,7 +172,7 @@ typedef struct {
int size; /* 1 << size is bytes in buf */
unsigned left; /* bytes available at next */
unsigned char *buf; /* buffer */
- unsigned char *next; /* next byte in buffer */
+ z_const unsigned char *next; /* next byte in buffer */
char *name; /* file name for error messages */
} file;
@@ -399,14 +401,14 @@ local void gztack(char *name, int gd, z_stream *strm, int last)
}
/* allocate buffers */
- in = fd == -1 ? NULL : malloc(CHUNK);
+ in = malloc(CHUNK);
out = malloc(CHUNK);
- if (out == NULL) bye("out of memory", "");
+ if (in == NULL || out == NULL) bye("out of memory", "");
/* compress input file and append to gzip file */
do {
/* get more input */
- len = fd == -1 ? 0 : read(fd, in, CHUNK);
+ len = read(fd, in, CHUNK);
if (len == -1) {
fprintf(stderr,
"gzappend warning: error reading %s, skipping rest ...\n",
@@ -453,7 +455,7 @@ local void gztack(char *name, int gd, z_stream *strm, int last)
/* clean up and return */
free(out);
- if (in != NULL) free(in);
+ free(in);
if (fd > 0) close(fd);
}
@@ -467,11 +469,13 @@ int main(int argc, char **argv)
z_stream strm;
/* ignore command name */
- argv++;
+ argc--; argv++;
/* provide usage if no arguments */
if (*argv == NULL) {
- printf("gzappend 1.1 (4 Nov 2003) Copyright (C) 2003 Mark Adler\n");
+ printf(
+ "gzappend 1.2 (11 Oct 2012) Copyright (C) 2003, 2012 Mark Adler\n"
+ );
printf(
"usage: gzappend [-level] file.gz [ addthis [ andthis ... ]]\n");
return 0;
diff --git a/zlib/examples/gzjoin.c b/zlib/examples/gzjoin.c
index 129347ce3..89e809844 100644
--- a/zlib/examples/gzjoin.c
+++ b/zlib/examples/gzjoin.c
@@ -1,7 +1,7 @@
/* gzjoin -- command to join gzip files into one gzip file
- Copyright (C) 2004 Mark Adler, all rights reserved
- version 1.0, 11 Dec 2004
+ Copyright (C) 2004, 2005, 2012 Mark Adler, all rights reserved
+ version 1.2, 14 Aug 2012
This software is provided 'as-is', without any express or implied
warranty. In no event will the author be held liable for any damages
@@ -27,6 +27,7 @@
*
* 1.0 11 Dec 2004 - First version
* 1.1 12 Jun 2005 - Changed ssize_t to long for portability
+ * 1.2 14 Aug 2012 - Clean up for z_const usage
*/
/*
@@ -308,7 +309,7 @@ local void gzcopy(char *name, int clr, unsigned long *crc, unsigned long *tot,
/* inflate and copy compressed data, clear last-block bit if requested */
len = 0;
zpull(&strm, in);
- start = strm.next_in;
+ start = in->next;
last = start[0] & 1;
if (last && clr)
start[0] &= ~1;
@@ -351,7 +352,7 @@ local void gzcopy(char *name, int clr, unsigned long *crc, unsigned long *tot,
pos = 0x100 >> pos;
last = strm.next_in[-1] & pos;
if (last && clr)
- strm.next_in[-1] &= ~pos;
+ in->buf[strm.next_in - in->buf - 1] &= ~pos;
}
else {
/* next last-block bit is in next unused byte */
@@ -364,14 +365,14 @@ local void gzcopy(char *name, int clr, unsigned long *crc, unsigned long *tot,
}
last = strm.next_in[0] & 1;
if (last && clr)
- strm.next_in[0] &= ~1;
+ in->buf[strm.next_in - in->buf] &= ~1;
}
}
}
/* update buffer with unused input */
in->left = strm.avail_in;
- in->next = strm.next_in;
+ in->next = in->buf + (strm.next_in - in->buf);
/* copy used input, write empty blocks to get to byte boundary */
pos = strm.data_type & 7;
diff --git a/zlib/examples/gzlog.c b/zlib/examples/gzlog.c
index d70aacaba..922f878dd 100644
--- a/zlib/examples/gzlog.c
+++ b/zlib/examples/gzlog.c
@@ -1,8 +1,8 @@
/*
* gzlog.c
- * Copyright (C) 2004, 2008 Mark Adler, all rights reserved
+ * Copyright (C) 2004, 2008, 2012 Mark Adler, all rights reserved
* For conditions of distribution and use, see copyright notice in gzlog.h
- * version 2.0, 25 Apr 2008
+ * version 2.2, 14 Aug 2012
*/
/*
@@ -750,7 +750,8 @@ local int log_recover(struct log *log, int op)
strcpy(log->end, ".add");
if (stat(log->path, &st) == 0 && st.st_size) {
len = (size_t)(st.st_size);
- if (len != st.st_size || (data = malloc(st.st_size)) == NULL) {
+ if ((off_t)len != st.st_size ||
+ (data = malloc(st.st_size)) == NULL) {
log_log(log, op, "allocation failure");
return -2;
}
@@ -758,7 +759,7 @@ local int log_recover(struct log *log, int op)
log_log(log, op, ".add file read failure");
return -1;
}
- ret = read(fd, data, len) != len;
+ ret = (size_t)read(fd, data, len) != len;
close(fd);
if (ret) {
log_log(log, op, ".add file read failure");
@@ -913,7 +914,7 @@ int gzlog_compress(gzlog *logd)
struct log *log = logd;
/* check arguments */
- if (log == NULL || strcmp(log->id, LOGID) || len < 0)
+ if (log == NULL || strcmp(log->id, LOGID))
return -3;
/* see if we lost the lock -- if so get it again and reload the extra
@@ -952,7 +953,7 @@ int gzlog_compress(gzlog *logd)
fd = open(log->path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (fd < 0)
break;
- ret = write(fd, data, len) != len;
+ ret = (size_t)write(fd, data, len) != len;
if (ret | close(fd))
break;
log_touch(log);
@@ -963,7 +964,7 @@ int gzlog_compress(gzlog *logd)
if (fd < 0)
break;
next = DICT > len ? len : DICT;
- ret = write(fd, (char *)data + len - next, next) != next;
+ ret = (size_t)write(fd, (char *)data + len - next, next) != next;
if (ret | close(fd))
break;
log_touch(log);
@@ -997,9 +998,9 @@ int gzlog_write(gzlog *logd, void *data, size_t len)
struct log *log = logd;
/* check arguments */
- if (log == NULL || strcmp(log->id, LOGID) || len < 0)
+ if (log == NULL || strcmp(log->id, LOGID))
return -3;
- if (data == NULL || len == 0)
+ if (data == NULL || len <= 0)
return 0;
/* see if we lost the lock -- if so get it again and reload the extra
@@ -1013,7 +1014,7 @@ int gzlog_write(gzlog *logd, void *data, size_t len)
fd = open(log->path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (fd < 0)
return -1;
- ret = write(fd, data, len) != len;
+ ret = (size_t)write(fd, data, len) != len;
if (ret | close(fd))
return -1;
log_touch(log);
diff --git a/zlib/examples/gzlog.h b/zlib/examples/gzlog.h
index c46142673..86f0cecba 100644
--- a/zlib/examples/gzlog.h
+++ b/zlib/examples/gzlog.h
@@ -1,6 +1,6 @@
/* gzlog.h
- Copyright (C) 2004, 2008 Mark Adler, all rights reserved
- version 2.0, 25 Apr 2008
+ Copyright (C) 2004, 2008, 2012 Mark Adler, all rights reserved
+ version 2.2, 14 Aug 2012
This software is provided 'as-is', without any express or implied
warranty. In no event will the author be held liable for any damages
@@ -27,6 +27,8 @@
Interface changed slightly in that now path is a prefix
Compression now occurs as needed during gzlog_write()
gzlog_write() now always leaves the log file as valid gzip
+ 2.1 8 Jul 2012 Fix argument checks in gzlog_compress() and gzlog_write()
+ 2.2 14 Aug 2012 Clean up signed comparisons
*/
/*
diff --git a/zlib/examples/zran.c b/zlib/examples/zran.c
index 617a13086..278f9ad07 100644
--- a/zlib/examples/zran.c
+++ b/zlib/examples/zran.c
@@ -1,7 +1,12 @@
/* zran.c -- example of zlib/gzip stream indexing and random access
- * Copyright (C) 2005 Mark Adler
+ * Copyright (C) 2005, 2012 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
- Version 1.0 29 May 2005 Mark Adler */
+ Version 1.1 29 Sep 2012 Mark Adler */
+
+/* Version History:
+ 1.0 29 May 2005 First version
+ 1.1 29 Sep 2012 Fix memory reallocation error
+ */
/* Illustrate the use of Z_BLOCK, inflatePrime(), and inflateSetDictionary()
for random access of a compressed file. A file containing a zlib or gzip
@@ -221,7 +226,7 @@ local int build_index(FILE *in, off_t span, struct access **built)
/* clean up and return index (release unused entries in list) */
(void)inflateEnd(&strm);
- index = realloc(index, sizeof(struct point) * index->have);
+ index->list = realloc(index->list, sizeof(struct point) * index->have);
index->size = index->have;
*built = index;
return index->size;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 21:59:55 +0000