105 lines
3 KiB
C
105 lines
3 KiB
C
// example1.c - Demonstrates miniz.c's compress() and uncompress() functions (same as zlib's).
|
|
// Public domain, May 15 2011, Rich Geldreich, richgel99@gmail.com. See "unlicense" statement at the end of tinfl.c.
|
|
#include <stdio.h>
|
|
#include "miniz.h"
|
|
typedef unsigned char uint8;
|
|
typedef unsigned short uint16;
|
|
typedef unsigned int uint;
|
|
|
|
// The string to compress.
|
|
static const char *s_pStr = "Good morning Dr. Chandra. This is Hal. I am ready for my first lesson." \
|
|
"Good morning Dr. Chandra. This is Hal. I am ready for my first lesson." \
|
|
"Good morning Dr. Chandra. This is Hal. I am ready for my first lesson." \
|
|
"Good morning Dr. Chandra. This is Hal. I am ready for my first lesson." \
|
|
"Good morning Dr. Chandra. This is Hal. I am ready for my first lesson." \
|
|
"Good morning Dr. Chandra. This is Hal. I am ready for my first lesson." \
|
|
"Good morning Dr. Chandra. This is Hal. I am ready for my first lesson.";
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
uint step = 0;
|
|
int cmp_status;
|
|
uLong src_len = (uLong)strlen(s_pStr);
|
|
uLong cmp_len = compressBound(src_len);
|
|
uLong uncomp_len = src_len;
|
|
uint8 *pCmp, *pUncomp;
|
|
uint total_succeeded = 0;
|
|
(void)argc, (void)argv;
|
|
|
|
printf("miniz.c version: %s\n", MZ_VERSION);
|
|
|
|
do
|
|
{
|
|
// Allocate buffers to hold compressed and uncompressed data.
|
|
pCmp = (mz_uint8 *)malloc((size_t)cmp_len);
|
|
pUncomp = (mz_uint8 *)malloc((size_t)src_len);
|
|
if ((!pCmp) || (!pUncomp))
|
|
{
|
|
printf("Out of memory!\n");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
// Compress the string.
|
|
cmp_status = compress(pCmp, &cmp_len, (const unsigned char *)s_pStr, src_len);
|
|
if (cmp_status != Z_OK)
|
|
{
|
|
printf("compress() failed!\n");
|
|
free(pCmp);
|
|
free(pUncomp);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
printf("Compressed from %u to %u bytes\n", (mz_uint32)src_len, (mz_uint32)cmp_len);
|
|
|
|
if (step)
|
|
{
|
|
// Purposely corrupt the compressed data if fuzzy testing (this is a very crude fuzzy test).
|
|
uint n = 1 + (rand() % 3);
|
|
while (n--)
|
|
{
|
|
uint i = rand() % cmp_len;
|
|
pCmp[i] ^= (rand() & 0xFF);
|
|
}
|
|
}
|
|
|
|
// Decompress.
|
|
cmp_status = uncompress(pUncomp, &uncomp_len, pCmp, cmp_len);
|
|
total_succeeded += (cmp_status == Z_OK);
|
|
|
|
if (step)
|
|
{
|
|
printf("Simple fuzzy test: step %u total_succeeded: %u\n", step, total_succeeded);
|
|
}
|
|
else
|
|
{
|
|
if (cmp_status != Z_OK)
|
|
{
|
|
printf("uncompress failed!\n");
|
|
free(pCmp);
|
|
free(pUncomp);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
printf("Decompressed from %u to %u bytes\n", (mz_uint32)cmp_len, (mz_uint32)uncomp_len);
|
|
|
|
// Ensure uncompress() returned the expected data.
|
|
if ((uncomp_len != src_len) || (memcmp(pUncomp, s_pStr, (size_t)src_len)))
|
|
{
|
|
printf("Decompression failed!\n");
|
|
free(pCmp);
|
|
free(pUncomp);
|
|
return EXIT_FAILURE;
|
|
}
|
|
}
|
|
|
|
free(pCmp);
|
|
free(pUncomp);
|
|
|
|
step++;
|
|
|
|
// Keep on fuzzy testing if there's a non-empty command line.
|
|
} while (argc >= 2);
|
|
|
|
printf("Success.\n");
|
|
return EXIT_SUCCESS;
|
|
}
|