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author | William Joye <wjoye@cfa.harvard.edu> | 2019-01-18 20:45:28 (GMT) |
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committer | William Joye <wjoye@cfa.harvard.edu> | 2019-01-18 20:45:28 (GMT) |
commit | 6a058cf92088671fdcd293c4d0df26515fc56622 (patch) | |
tree | 819912e4f8b0d2f25aa18ec936fd59eb65098a56 /zlib/contrib/puff/pufftest.c | |
parent | fad7f6008c4c496ef14f140de7bc01e3b541e22b (diff) | |
download | blt-6a058cf92088671fdcd293c4d0df26515fc56622.zip blt-6a058cf92088671fdcd293c4d0df26515fc56622.tar.gz blt-6a058cf92088671fdcd293c4d0df26515fc56622.tar.bz2 |
rm zlib
Diffstat (limited to 'zlib/contrib/puff/pufftest.c')
-rw-r--r-- | zlib/contrib/puff/pufftest.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/zlib/contrib/puff/pufftest.c b/zlib/contrib/puff/pufftest.c deleted file mode 100644 index 7764814..0000000 --- a/zlib/contrib/puff/pufftest.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * pufftest.c - * Copyright (C) 2002-2013 Mark Adler - * For conditions of distribution and use, see copyright notice in puff.h - * version 2.3, 21 Jan 2013 - */ - -/* Example of how to use puff(). - - Usage: puff [-w] [-f] [-nnn] file - ... | puff [-w] [-f] [-nnn] - - where file is the input file with deflate data, nnn is the number of bytes - of input to skip before inflating (e.g. to skip a zlib or gzip header), and - -w is used to write the decompressed data to stdout. -f is for coverage - testing, and causes pufftest to fail with not enough output space (-f does - a write like -w, so -w is not required). */ - -#include <stdio.h> -#include <stdlib.h> -#include "puff.h" - -#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__) -# include <fcntl.h> -# include <io.h> -# define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY) -#else -# define SET_BINARY_MODE(file) -#endif - -#define local static - -/* Return size times approximately the cube root of 2, keeping the result as 1, - 3, or 5 times a power of 2 -- the result is always > size, until the result - is the maximum value of an unsigned long, where it remains. This is useful - to keep reallocations less than ~33% over the actual data. */ -local size_t bythirds(size_t size) -{ - int n; - size_t m; - - m = size; - for (n = 0; m; n++) - m >>= 1; - if (n < 3) - return size + 1; - n -= 3; - m = size >> n; - m += m == 6 ? 2 : 1; - m <<= n; - return m > size ? m : (size_t)(-1); -} - -/* Read the input file *name, or stdin if name is NULL, into allocated memory. - Reallocate to larger buffers until the entire file is read in. Return a - pointer to the allocated data, or NULL if there was a memory allocation - failure. *len is the number of bytes of data read from the input file (even - if load() returns NULL). If the input file was empty or could not be opened - or read, *len is zero. */ -local void *load(const char *name, size_t *len) -{ - size_t size; - void *buf, *swap; - FILE *in; - - *len = 0; - buf = malloc(size = 4096); - if (buf == NULL) - return NULL; - in = name == NULL ? stdin : fopen(name, "rb"); - if (in != NULL) { - for (;;) { - *len += fread((char *)buf + *len, 1, size - *len, in); - if (*len < size) break; - size = bythirds(size); - if (size == *len || (swap = realloc(buf, size)) == NULL) { - free(buf); - buf = NULL; - break; - } - buf = swap; - } - fclose(in); - } - return buf; -} - -int main(int argc, char **argv) -{ - int ret, put = 0, fail = 0; - unsigned skip = 0; - char *arg, *name = NULL; - unsigned char *source = NULL, *dest; - size_t len = 0; - unsigned long sourcelen, destlen; - - /* process arguments */ - while (arg = *++argv, --argc) - if (arg[0] == '-') { - if (arg[1] == 'w' && arg[2] == 0) - put = 1; - else if (arg[1] == 'f' && arg[2] == 0) - fail = 1, put = 1; - else if (arg[1] >= '0' && arg[1] <= '9') - skip = (unsigned)atoi(arg + 1); - else { - fprintf(stderr, "invalid option %s\n", arg); - return 3; - } - } - else if (name != NULL) { - fprintf(stderr, "only one file name allowed\n"); - return 3; - } - else - name = arg; - source = load(name, &len); - if (source == NULL) { - fprintf(stderr, "memory allocation failure\n"); - return 4; - } - if (len == 0) { - fprintf(stderr, "could not read %s, or it was empty\n", - name == NULL ? "<stdin>" : name); - free(source); - return 3; - } - if (skip >= len) { - fprintf(stderr, "skip request of %d leaves no input\n", skip); - free(source); - return 3; - } - - /* test inflate data with offset skip */ - len -= skip; - sourcelen = (unsigned long)len; - ret = puff(NIL, &destlen, source + skip, &sourcelen); - if (ret) - fprintf(stderr, "puff() failed with return code %d\n", ret); - else { - fprintf(stderr, "puff() succeeded uncompressing %lu bytes\n", destlen); - if (sourcelen < len) fprintf(stderr, "%lu compressed bytes unused\n", - len - sourcelen); - } - - /* if requested, inflate again and write decompressd data to stdout */ - if (put && ret == 0) { - if (fail) - destlen >>= 1; - dest = malloc(destlen); - if (dest == NULL) { - fprintf(stderr, "memory allocation failure\n"); - free(source); - return 4; - } - puff(dest, &destlen, source + skip, &sourcelen); - SET_BINARY_MODE(stdout); - fwrite(dest, 1, destlen, stdout); - free(dest); - } - - /* clean up */ - free(source); - return ret; -} |