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miniz.c updated to v1.10 - substantial compressor optimizations, fixed minor issue with unsigned long type, added level commmand line option parsing to example3

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richgel99@gmail.com
2011-05-28 13:52:24 +00:00
parent fda66cc357
commit 9560a0a51d
5 changed files with 685 additions and 216 deletions
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69
example3.c
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@@ -19,20 +19,73 @@ int main(int argc, char *argv[])
const char *pMode;
FILE *pInfile, *pOutfile;
uint infile_size;
int level = Z_BEST_COMPRESSION;
z_stream stream;
if (argc != 4)
int n = 1;
const char *pSrc_filename;
const char *pDst_filename;
printf("miniz.c version: %s\n", MZ_VERSION);
if (argc < 4)
{
printf("Usage: example3 [c/d] infile outfile\n");
printf("Usage: example3 [options] [mode:c or d] infile outfile\n");
printf("\nModes:\n");
printf("c - Compresses file infile to a zlib stream in file outfile\n");
printf("d - Decompress zlib stream in file infile to file outfile\n");
printf("\nOptions:\n");
printf("-l[0-10] - Compression level, higher values are slower.\n");
return EXIT_FAILURE;
}
pMode = argv[1];
while ((n < argc) && (argv[n][0] == '-'))
{
switch (argv[n][1])
{
case 'l':
{
level = atoi(&argv[1][2]);
if ((level < 0) || (level > 10))
{
printf("Invalid level!\n");
return EXIT_FAILURE;
}
break;
}
default:
{
printf("Invalid option: %s\n", argv[n]);
return EXIT_FAILURE;
}
}
n++;
}
if ((argc - n) < 3)
{
printf("Must specify mode, input filename, and output filename after options!\n");
return EXIT_FAILURE;
}
else if ((argc - n) > 3)
{
printf("Too many filenames!\n");
return EXIT_FAILURE;
}
pMode = argv[n++];
if (!strchr("cCdD", pMode[0]))
{
printf("Invalid mode!\n");
return EXIT_FAILURE;
}
pSrc_filename = argv[n++];
pDst_filename = argv[n++];
printf("Mode: %c, Level: %u\nInput File: \"%s\"\nOutput File: \"%s\"\n", pMode[0], level, pSrc_filename, pDst_filename);
// Open input file.
pInfile = fopen(argv[2], "rb");
pInfile = fopen(pSrc_filename, "rb");
if (!pInfile)
{
printf("Failed opening input file!\n");
@@ -45,7 +98,7 @@ int main(int argc, char *argv[])
fseek(pInfile, 0, SEEK_SET);
// Open output file.
pOutfile = fopen(argv[3], "wb");
pOutfile = fopen(pDst_filename, "wb");
if (!pOutfile)
{
printf("Failed opening output file!\n");
@@ -66,7 +119,7 @@ int main(int argc, char *argv[])
// Compression.
uint infile_remaining = infile_size;
if (deflateInit(&stream, Z_BEST_COMPRESSION) != Z_OK)
if (deflateInit(&stream, level) != Z_OK)
{
printf("deflateInit() failed!\n");
return EXIT_FAILURE;
@@ -90,7 +143,7 @@ int main(int argc, char *argv[])
stream.avail_in = n;
infile_remaining -= n;
printf("Input bytes remaining: %u\n", infile_remaining);
//printf("Input bytes remaining: %u\n", infile_remaining);
}
status = deflate(&stream, infile_remaining ? Z_NO_FLUSH : Z_FINISH);