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external: add miniz v2.2.0 with self written CMakeLists.txt

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Sources downloaded from https://github.com/richgel999/miniz/releases/tag/2.2.0
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Reinhold Gschweicher 2022-08-22 22:18:49 +02:00
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add_library(miniz STATIC
miniz.h
miniz.c
)
target_include_directories(miniz PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}")

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## Changelog
### 2.2.0
- Fix examples with amalgamation
- Modified cmake script to support shared library mode and find_package
- Fix for misleading doc comment on `mz_zip_reader_init_cfile` function
- Add include location tolerance and stop forcing `_GNU_SOURCE`
- Fix: mz_zip_reader_locate_file_v2 returns an mz_bool
- Fix large file system checks
- Add #elif to enable an external mz_crc32() to be linked in
- Write with dynamic size (size of file/data to be added not known before adding)
- Added uncompress2 for zlib compatibility
- Add support for building as a Meson subproject
- Added OSSFuzz support; Integrate with CIFuzz
- Add pkg-config file
- Fixed use-of-uninitialized value msan error when copying dist bytes with no output bytes written.
- mz_zip_validate_file(): fix memory leak on errors
- Fixed MSAN use-of-uninitialized in tinfl_decompress when invalid dist is decoded. In this instance dist was 31 which s_dist_base translates as 0
- Add flag to set (compressed) size in local file header
- avoid use of uninitialized value in tdefl_record_literal
### 2.1.0
- More instances of memcpy instead of cast and use memcpy per default
- Remove inline for c90 support
- New function to read files via callback functions when adding them
- Fix out of bounds read while reading Zip64 extended information
- guard memcpy when n == 0 because buffer may be NULL
- Implement inflateReset() function
- Move comp/decomp alloc/free prototypes under guarding #ifndef MZ_NO_MALLOC
- Fix large file support under Windows
- Don't warn if _LARGEFILE64_SOURCE is not defined to 1
- Fixes for MSVC warnings
- Remove check that path of file added to archive contains ':' or '\'
- Add !defined check on MINIZ_USE_ALIGNED_LOADS_AND_STORES
### 2.0.8
- Remove unimplemented functions (mz_zip_locate_file and mz_zip_locate_file_v2)
- Add license, changelog, readme and example files to release zip
- Fix heap overflow to user buffer in tinfl_status tinfl_decompress
- Fix corrupt archive if uncompressed file smaller than 4 byte and the file is added by mz_zip_writer_add_mem*
### 2.0.7
- Removed need in C++ compiler in cmake build
- Fixed a lot of uninitialized value errors found with Valgrind by memsetting m_dict to 0 in tdefl_init
- Fix resource leak in mz_zip_reader_init_file_v2
- Fix assert with mz_zip_writer_add_mem* w/MZ_DEFAULT_COMPRESSION
- cmake build: install library and headers
- Remove _LARGEFILE64_SOURCE requirement from apple defines for large files
### 2.0.6
- Improve MZ_ZIP_FLAG_WRITE_ZIP64 documentation
- Remove check for cur_archive_file_ofs > UINT_MAX because cur_archive_file_ofs is not used after this point
- Add cmake debug configuration
- Fix PNG height when creating png files
- Add "iterative" file extraction method based on mz_zip_reader_extract_to_callback.
- Option to use memcpy for unaligned data access
- Define processor/arch macros as zero if not set to one
### 2.0.4/2.0.5
- Fix compilation with the various omission compile definitions
### 2.0.3
- Fix GCC/clang compile warnings
- Added callback for periodic flushes (for ZIP file streaming)
- Use UTF-8 for file names in ZIP files per default
### 2.0.2
- Fix source backwards compatibility with 1.x
- Fix a ZIP bit not being set correctly
### 2.0.1
- Added some tests
- Added CI
- Make source code ANSI C compatible
### 2.0.0 beta
- Matthew Sitton merged miniz 1.x to Rich Geldreich's vogl ZIP64 changes. Miniz is now licensed as MIT since the vogl code base is MIT licensed
- Miniz is now split into several files
- Miniz does now not seek backwards when creating ZIP files. That is the ZIP files can be streamed
- Miniz automatically switches to the ZIP64 format when the created ZIP files goes over ZIP file limits
- Similar to [SQLite](https://www.sqlite.org/amalgamation.html) the Miniz source code is amalgamated into one miniz.c/miniz.h pair in a build step (amalgamate.sh). Please use miniz.c/miniz.h in your projects
- Miniz 2 is only source back-compatible with miniz 1.x. It breaks binary compatibility because structures changed
### v1.16 BETA Oct 19, 2013
Still testing, this release is downloadable from [here](http://www.tenacioussoftware.com/miniz_v116_beta_r1.7z). Two key inflator-only robustness and streaming related changes. Also merged in tdefl_compressor_alloc(), tdefl_compressor_free() helpers to make script bindings easier for rustyzip. I would greatly appreciate any help with testing or any feedback.
The inflator in raw (non-zlib) mode is now usable on gzip or similar streams that have a bunch of bytes following the raw deflate data (problem discovered by rustyzip author williamw520). This version should never read beyond the last byte of the raw deflate data independent of how many bytes you pass into the input buffer.
The inflator now has a new failure status TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS (-4). Previously, if the inflator was starved of bytes and could not make progress (because the input buffer was empty and the caller did not set the TINFL_FLAG_HAS_MORE_INPUT flag - say on truncated or corrupted compressed data stream) it would append all 0's to the input and try to soldier on. This is scary behavior if the caller didn't know when to stop accepting output (because it didn't know how much uncompressed data was expected, or didn't enforce a sane maximum). v1.16 will instead return TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS immediately if it needs 1 or more bytes to make progress, the input buf is empty, and the caller has indicated that no more input is available. This is a "soft" failure, so you can call the inflator again with more input and it will try to continue, or you can give up and fail. This could be very useful in network streaming scenarios.
- The inflator coroutine func. is subtle and complex so I'm being cautious about this release. I would greatly appreciate any help with testing or any feedback.
I feel good about these changes, and they've been through several hours of automated testing, but they will probably not fix anything for the majority of prev. users so I'm
going to mark this release as beta for a few weeks and continue testing it at work/home on various things.
- The inflator in raw (non-zlib) mode is now usable on gzip or similar data streams that have a bunch of bytes following the raw deflate data (problem discovered by rustyzip author williamw520).
This version should *never* read beyond the last byte of the raw deflate data independent of how many bytes you pass into the input buffer. This issue was caused by the various Huffman bitbuffer lookahead optimizations, and
would not be an issue if the caller knew and enforced the precise size of the raw compressed data *or* if the compressed data was in zlib format (i.e. always followed by the byte aligned zlib adler32).
So in other words, you can now call the inflator on deflate streams that are followed by arbitrary amounts of data and it's guaranteed that decompression will stop exactly on the last byte.
- The inflator now has a new failure status: TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS (-4). Previously, if the inflator was starved of bytes and could not make progress (because the input buffer was empty and the
caller did not set the TINFL_FLAG_HAS_MORE_INPUT flag - say on truncated or corrupted compressed data stream) it would append all 0's to the input and try to soldier on.
This is scary, because in the worst case, I believe it was possible for the prev. inflator to start outputting large amounts of literal data. If the caller didn't know when to stop accepting output
(because it didn't know how much uncompressed data was expected, or didn't enforce a sane maximum) it could continue forever. v1.16 cannot fall into this failure mode, instead it'll return
TINFL_STATUS_FAILED_CANNOT_MAKE_PROGRESS immediately if it needs 1 or more bytes to make progress, the input buf is empty, and the caller has indicated that no more input is available. This is a "soft"
failure, so you can call the inflator again with more input and it will try to continue, or you can give up and fail. This could be very useful in network streaming scenarios.
- Added documentation to all the tinfl return status codes, fixed miniz_tester so it accepts double minus params for Linux, tweaked example1.c, added a simple "follower bytes" test to miniz_tester.cpp.
### v1.15 r4 STABLE - Oct 13, 2013
Merged over a few very minor bug fixes that I fixed in the zip64 branch. This is downloadable from [here](http://code.google.com/p/miniz/downloads/list) and also in SVN head (as of 10/19/13).
### v1.15 - Oct. 13, 2013
Interim bugfix release while I work on the next major release with zip64 and streaming compression/decompression support. Fixed the MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY bug (thanks kahmyong.moon@hp.com), which could cause the locate files func to not find files when this flag was specified. Also fixed a bug in mz_zip_reader_extract_to_mem_no_alloc() with user provided read buffers (thanks kymoon). I also merged lots of compiler fixes from various github repo branches and Google Code issue reports. I finally added cmake support (only tested under for Linux so far), compiled and tested with clang v3.3 and gcc 4.6 (under Linux), added defl_write_image_to_png_file_in_memory_ex() (supports Y flipping for OpenGL use, real-time compression), added a new PNG example (example6.c - Mandelbrot), and I added 64-bit file I/O support (stat64(), etc.) for glibc.
- Critical fix for the MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY bug (thanks kahmyong.moon@hp.com) which could cause locate files to not find files. This bug
would only have occured in earlier versions if you explicitly used this flag, OR if you used mz_zip_extract_archive_file_to_heap() or mz_zip_add_mem_to_archive_file_in_place()
(which used this flag). If you can't switch to v1.15 but want to fix this bug, just remove the uses of this flag from both helper funcs (and of course don't use the flag).
- Bugfix in mz_zip_reader_extract_to_mem_no_alloc() from kymoon when pUser_read_buf is not NULL and compressed size is > uncompressed size
- Fixing mz_zip_reader_extract_*() funcs so they don't try to extract compressed data from directory entries, to account for weird zipfiles which contain zero-size compressed data on dir entries.
Hopefully this fix won't cause any issues on weird zip archives, because it assumes the low 16-bits of zip external attributes are DOS attributes (which I believe they always are in practice).
- Fixing mz_zip_reader_is_file_a_directory() so it doesn't check the internal attributes, just the filename and external attributes
- mz_zip_reader_init_file() - missing MZ_FCLOSE() call if the seek failed
- Added cmake support for Linux builds which builds all the examples, tested with clang v3.3 and gcc v4.6.
- Clang fix for tdefl_write_image_to_png_file_in_memory() from toffaletti
- Merged MZ_FORCEINLINE fix from hdeanclark
- Fix <time.h> include before config #ifdef, thanks emil.brink
- Added tdefl_write_image_to_png_file_in_memory_ex(): supports Y flipping (super useful for OpenGL apps), and explicit control over the compression level (so you can
set it to 1 for real-time compression).
- Merged in some compiler fixes from paulharris's github repro.
- Retested this build under Windows (VS 2010, including static analysis), tcc 0.9.26, gcc v4.6 and clang v3.3.
- Added example6.c, which dumps an image of the mandelbrot set to a PNG file.
- Modified example2 to help test the MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY flag more.
- In r3: Bugfix to mz_zip_writer_add_file() found during merge: Fix possible src file fclose() leak if alignment bytes+local header file write faiiled
- In r4: Minor bugfix to mz_zip_writer_add_from_zip_reader(): Was pushing the wrong central dir header offset, appears harmless in this release, but it became a problem in the zip64 branch
### v1.14 - May 20, 2012
(SVN Only) Minor tweaks to get miniz.c compiling with the Tiny C Compiler, added #ifndef MINIZ_NO_TIME guards around utime.h includes. Adding mz_free() function, so the caller can free heap blocks returned by miniz using whatever heap functions it has been configured to use, MSVC specific fixes to use "safe" variants of several functions (localtime_s, fopen_s, freopen_s).
MinGW32/64 GCC 4.6.1 compiler fixes: added MZ_FORCEINLINE, #include <time.h> (thanks fermtect).
Compiler specific fixes, some from fermtect. I upgraded to TDM GCC 4.6.1 and now static __forceinline is giving it fits, so I'm changing all usage of __forceinline to MZ_FORCEINLINE and forcing gcc to use __attribute__((__always_inline__)) (and MSVC to use __forceinline). Also various fixes from fermtect for MinGW32: added #include , 64-bit ftell/fseek fixes.
### v1.13 - May 19, 2012
From jason@cornsyrup.org and kelwert@mtu.edu - Most importantly, fixed mz_crc32() so it doesn't compute the wrong CRC-32's when mz_ulong is 64-bits. Temporarily/locally slammed in "typedef unsigned long mz_ulong" and re-ran a randomized regression test on ~500k files. Other stuff:
Eliminated a bunch of warnings when compiling with GCC 32-bit/64. Ran all examples, miniz.c, and tinfl.c through MSVC 2008's /analyze (static analysis) option and fixed all warnings (except for the silly "Use of the comma-operator in a tested expression.." analysis warning, which I purposely use to work around a MSVC compiler warning).
Created 32-bit and 64-bit Codeblocks projects/workspace. Built and tested Linux executables. The codeblocks workspace is compatible with Linux+Win32/x64. Added miniz_tester solution/project, which is a useful little app derived from LZHAM's tester app that I use as part of the regression test. Ran miniz.c and tinfl.c through another series of regression testing on ~500,000 files and archives. Modified example5.c so it purposely disables a bunch of high-level functionality (MINIZ_NO_STDIO, etc.). (Thanks to corysama for the MINIZ_NO_STDIO bug report.)
Fix ftell() usage in a few of the examples so they exit with an error on files which are too large (a limitation of the examples, not miniz itself). Fix fail logic handling in mz_zip_add_mem_to_archive_file_in_place() so it always calls mz_zip_writer_finalize_archive() and mz_zip_writer_end(), even if the file add fails.
- From jason@cornsyrup.org and kelwert@mtu.edu - Fix mz_crc32() so it doesn't compute the wrong CRC-32's when mz_ulong is 64-bit.
- Temporarily/locally slammed in "typedef unsigned long mz_ulong" and re-ran a randomized regression test on ~500k files.
- Eliminated a bunch of warnings when compiling with GCC 32-bit/64.
- Ran all examples, miniz.c, and tinfl.c through MSVC 2008's /analyze (static analysis) option and fixed all warnings (except for the silly
"Use of the comma-operator in a tested expression.." analysis warning, which I purposely use to work around a MSVC compiler warning).
- Created 32-bit and 64-bit Codeblocks projects/workspace. Built and tested Linux executables. The codeblocks workspace is compatible with Linux+Win32/x64.
- Added miniz_tester solution/project, which is a useful little app derived from LZHAM's tester app that I use as part of the regression test.
- Ran miniz.c and tinfl.c through another series of regression testing on ~500,000 files and archives.
- Modified example5.c so it purposely disables a bunch of high-level functionality (MINIZ_NO_STDIO, etc.). (Thanks to corysama for the MINIZ_NO_STDIO bug report.)
- Fix ftell() usage in examples so they exit with an error on files which are too large (a limitation of the examples, not miniz itself).
### v1.12 - 4/12/12
More comments, added low-level example5.c, fixed a couple minor level_and_flags issues in the archive API's.
level_and_flags can now be set to MZ_DEFAULT_COMPRESSION. Thanks to Bruce Dawson <bruced@valvesoftware.com> for the feedback/bug report.
### v1.11 - 5/28/11
Added statement from unlicense.org
### v1.10 - 5/27/11
- Substantial compressor optimizations:
- Level 1 is now ~4x faster than before. The L1 compressor's throughput now varies between 70-110MB/sec. on a Core i7 (actual throughput varies depending on the type of data, and x64 vs. x86).
- Improved baseline L2-L9 compression perf. Also, greatly improved compression perf. issues on some file types.
- Refactored the compression code for better readability and maintainability.
- Added level 10 compression level (L10 has slightly better ratio than level 9, but could have a potentially large drop in throughput on some files).
### v1.09 - 5/15/11
Initial stable release.

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Copyright 2013-2014 RAD Game Tools and Valve Software
Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC
All Rights Reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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https://github.com/richgel999/miniz/releases/tag/2.2.0

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// 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;
}

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// example2.c - Simple demonstration of miniz.c's ZIP archive API's.
// Note this test deletes the test archive file "__mz_example2_test__.zip" in the current directory, then creates a new one with test data.
// Public domain, May 15 2011, Rich Geldreich, richgel99@gmail.com. See "unlicense" statement at the end of tinfl.c.
#if defined(__GNUC__)
// Ensure we get the 64-bit variants of the CRT's file I/O calls
#ifndef _FILE_OFFSET_BITS
#define _FILE_OFFSET_BITS 64
#endif
#ifndef _LARGEFILE64_SOURCE
#define _LARGEFILE64_SOURCE 1
#endif
#endif
#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_pTest_str =
"MISSION CONTROL I wouldn't worry too much about the computer. First of all, there is still a chance that he is right, despite your tests, and" \
"if it should happen again, we suggest eliminating this possibility by allowing the unit to remain in place and seeing whether or not it" \
"actually fails. If the computer should turn out to be wrong, the situation is still not alarming. The type of obsessional error he may be" \
"guilty of is not unknown among the latest generation of HAL 9000 computers. It has almost always revolved around a single detail, such as" \
"the one you have described, and it has never interfered with the integrity or reliability of the computer's performance in other areas." \
"No one is certain of the cause of this kind of malfunctioning. It may be over-programming, but it could also be any number of reasons. In any" \
"event, it is somewhat analogous to human neurotic behavior. Does this answer your query? Zero-five-three-Zero, MC, transmission concluded.";
static const char *s_pComment = "This is a comment";
int main(int argc, char *argv[])
{
int i, sort_iter;
mz_bool status;
size_t uncomp_size;
mz_zip_archive zip_archive;
void *p;
const int N = 50;
char data[2048];
char archive_filename[64];
static const char *s_Test_archive_filename = "__mz_example2_test__.zip";
assert((strlen(s_pTest_str) + 64) < sizeof(data));
printf("miniz.c version: %s\n", MZ_VERSION);
(void)argc, (void)argv;
// Delete the test archive, so it doesn't keep growing as we run this test
remove(s_Test_archive_filename);
// Append a bunch of text files to the test archive
for (i = (N - 1); i >= 0; --i)
{
sprintf(archive_filename, "%u.txt", i);
sprintf(data, "%u %s %u", (N - 1) - i, s_pTest_str, i);
// Add a new file to the archive. Note this is an IN-PLACE operation, so if it fails your archive is probably hosed (its central directory may not be complete) but it should be recoverable using zip -F or -FF. So use caution with this guy.
// A more robust way to add a file to an archive would be to read it into memory, perform the operation, then write a new archive out to a temp file and then delete/rename the files.
// Or, write a new archive to disk to a temp file, then delete/rename the files. For this test this API is fine.
status = mz_zip_add_mem_to_archive_file_in_place(s_Test_archive_filename, archive_filename, data, strlen(data) + 1, s_pComment, (uint16)strlen(s_pComment), MZ_BEST_COMPRESSION);
if (!status)
{
printf("mz_zip_add_mem_to_archive_file_in_place failed!\n");
return EXIT_FAILURE;
}
}
// Add a directory entry for testing
status = mz_zip_add_mem_to_archive_file_in_place(s_Test_archive_filename, "directory/", NULL, 0, "no comment", (uint16)strlen("no comment"), MZ_BEST_COMPRESSION);
if (!status)
{
printf("mz_zip_add_mem_to_archive_file_in_place failed!\n");
return EXIT_FAILURE;
}
// Now try to open the archive.
memset(&zip_archive, 0, sizeof(zip_archive));
status = mz_zip_reader_init_file(&zip_archive, s_Test_archive_filename, 0);
if (!status)
{
printf("mz_zip_reader_init_file() failed!\n");
return EXIT_FAILURE;
}
// Get and print information about each file in the archive.
for (i = 0; i < (int)mz_zip_reader_get_num_files(&zip_archive); i++)
{
mz_zip_archive_file_stat file_stat;
if (!mz_zip_reader_file_stat(&zip_archive, i, &file_stat))
{
printf("mz_zip_reader_file_stat() failed!\n");
mz_zip_reader_end(&zip_archive);
return EXIT_FAILURE;
}
printf("Filename: \"%s\", Comment: \"%s\", Uncompressed size: %u, Compressed size: %u, Is Dir: %u\n", file_stat.m_filename, file_stat.m_comment, (uint)file_stat.m_uncomp_size, (uint)file_stat.m_comp_size, mz_zip_reader_is_file_a_directory(&zip_archive, i));
if (!strcmp(file_stat.m_filename, "directory/"))
{
if (!mz_zip_reader_is_file_a_directory(&zip_archive, i))
{
printf("mz_zip_reader_is_file_a_directory() didn't return the expected results!\n");
mz_zip_reader_end(&zip_archive);
return EXIT_FAILURE;
}
}
}
// Close the archive, freeing any resources it was using
mz_zip_reader_end(&zip_archive);
// Now verify the compressed data
for (sort_iter = 0; sort_iter < 2; sort_iter++)
{
memset(&zip_archive, 0, sizeof(zip_archive));
status = mz_zip_reader_init_file(&zip_archive, s_Test_archive_filename, sort_iter ? MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY : 0);
if (!status)
{
printf("mz_zip_reader_init_file() failed!\n");
return EXIT_FAILURE;
}
for (i = 0; i < N; i++)
{
sprintf(archive_filename, "%u.txt", i);
sprintf(data, "%u %s %u", (N - 1) - i, s_pTest_str, i);
// Try to extract all the files to the heap.
p = mz_zip_reader_extract_file_to_heap(&zip_archive, archive_filename, &uncomp_size, 0);
if (!p)
{
printf("mz_zip_reader_extract_file_to_heap() failed!\n");
mz_zip_reader_end(&zip_archive);
return EXIT_FAILURE;
}
// Make sure the extraction really succeeded.
if ((uncomp_size != (strlen(data) + 1)) || (memcmp(p, data, strlen(data))))
{
printf("mz_zip_reader_extract_file_to_heap() failed to extract the proper data\n");
mz_free(p);
mz_zip_reader_end(&zip_archive);
return EXIT_FAILURE;
}
printf("Successfully extracted file \"%s\", size %u\n", archive_filename, (uint)uncomp_size);
printf("File data: \"%s\"\n", (const char *)p);
// We're done.
mz_free(p);
}
// Close the archive, freeing any resources it was using
mz_zip_reader_end(&zip_archive);
}
printf("Success.\n");
return EXIT_SUCCESS;
}

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// example3.c - Demonstrates how to use miniz.c's deflate() and inflate() functions for simple file compression.
// Public domain, May 15 2011, Rich Geldreich, richgel99@gmail.com. See "unlicense" statement at the end of tinfl.c.
// For simplicity, this example is limited to files smaller than 4GB, but this is not a limitation of miniz.c.
#include <stdio.h>
#include <limits.h>
#include "miniz.h"
typedef unsigned char uint8;
typedef unsigned short uint16;
typedef unsigned int uint;
#define my_max(a,b) (((a) > (b)) ? (a) : (b))
#define my_min(a,b) (((a) < (b)) ? (a) : (b))
#define BUF_SIZE (1024 * 1024)
static uint8 s_inbuf[BUF_SIZE];
static uint8 s_outbuf[BUF_SIZE];
int main(int argc, char *argv[])
{
const char *pMode;
FILE *pInfile, *pOutfile;
uint infile_size;
int level = Z_BEST_COMPRESSION;
z_stream stream;
int p = 1;
const char *pSrc_filename;
const char *pDst_filename;
long file_loc;
printf("miniz.c version: %s\n", MZ_VERSION);
if (argc < 4)
{
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;
}
while ((p < argc) && (argv[p][0] == '-'))
{
switch (argv[p][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[p]);
return EXIT_FAILURE;
}
}
p++;
}
if ((argc - p) < 3)
{
printf("Must specify mode, input filename, and output filename after options!\n");
return EXIT_FAILURE;
}
else if ((argc - p) > 3)
{
printf("Too many filenames!\n");
return EXIT_FAILURE;
}
pMode = argv[p++];
if (!strchr("cCdD", pMode[0]))
{
printf("Invalid mode!\n");
return EXIT_FAILURE;
}
pSrc_filename = argv[p++];
pDst_filename = argv[p++];
printf("Mode: %c, Level: %u\nInput File: \"%s\"\nOutput File: \"%s\"\n", pMode[0], level, pSrc_filename, pDst_filename);
// Open input file.
pInfile = fopen(pSrc_filename, "rb");
if (!pInfile)
{
printf("Failed opening input file!\n");
return EXIT_FAILURE;
}
// Determine input file's size.
fseek(pInfile, 0, SEEK_END);
file_loc = ftell(pInfile);
fseek(pInfile, 0, SEEK_SET);
if ((file_loc < 0) || (file_loc > INT_MAX))
{
// This is not a limitation of miniz or tinfl, but this example.
printf("File is too large to be processed by this example.\n");
return EXIT_FAILURE;
}
infile_size = (uint)file_loc;
// Open output file.
pOutfile = fopen(pDst_filename, "wb");
if (!pOutfile)
{
printf("Failed opening output file!\n");
return EXIT_FAILURE;
}
printf("Input file size: %u\n", infile_size);
// Init the z_stream
memset(&stream, 0, sizeof(stream));
stream.next_in = s_inbuf;
stream.avail_in = 0;
stream.next_out = s_outbuf;
stream.avail_out = BUF_SIZE;
if ((pMode[0] == 'c') || (pMode[0] == 'C'))
{
// Compression.
uint infile_remaining = infile_size;
if (deflateInit(&stream, level) != Z_OK)
{
printf("deflateInit() failed!\n");
return EXIT_FAILURE;
}
for ( ; ; )
{
int status;
if (!stream.avail_in)
{
// Input buffer is empty, so read more bytes from input file.
uint n = my_min(BUF_SIZE, infile_remaining);
if (fread(s_inbuf, 1, n, pInfile) != n)
{
printf("Failed reading from input file!\n");
return EXIT_FAILURE;
}
stream.next_in = s_inbuf;
stream.avail_in = n;
infile_remaining -= n;
//printf("Input bytes remaining: %u\n", infile_remaining);
}
status = deflate(&stream, infile_remaining ? Z_NO_FLUSH : Z_FINISH);
if ((status == Z_STREAM_END) || (!stream.avail_out))
{
// Output buffer is full, or compression is done, so write buffer to output file.
uint n = BUF_SIZE - stream.avail_out;
if (fwrite(s_outbuf, 1, n, pOutfile) != n)
{
printf("Failed writing to output file!\n");
return EXIT_FAILURE;
}
stream.next_out = s_outbuf;
stream.avail_out = BUF_SIZE;
}
if (status == Z_STREAM_END)
break;
else if (status != Z_OK)
{
printf("deflate() failed with status %i!\n", status);
return EXIT_FAILURE;
}
}
if (deflateEnd(&stream) != Z_OK)
{
printf("deflateEnd() failed!\n");
return EXIT_FAILURE;
}
}
else if ((pMode[0] == 'd') || (pMode[0] == 'D'))
{
// Decompression.
uint infile_remaining = infile_size;
if (inflateInit(&stream))
{
printf("inflateInit() failed!\n");
return EXIT_FAILURE;
}
for ( ; ; )
{
int status;
if (!stream.avail_in)
{
// Input buffer is empty, so read more bytes from input file.
uint n = my_min(BUF_SIZE, infile_remaining);
if (fread(s_inbuf, 1, n, pInfile) != n)
{
printf("Failed reading from input file!\n");
return EXIT_FAILURE;
}
stream.next_in = s_inbuf;
stream.avail_in = n;
infile_remaining -= n;
}
status = inflate(&stream, Z_SYNC_FLUSH);
if ((status == Z_STREAM_END) || (!stream.avail_out))
{
// Output buffer is full, or decompression is done, so write buffer to output file.
uint n = BUF_SIZE - stream.avail_out;
if (fwrite(s_outbuf, 1, n, pOutfile) != n)
{
printf("Failed writing to output file!\n");
return EXIT_FAILURE;
}
stream.next_out = s_outbuf;
stream.avail_out = BUF_SIZE;
}
if (status == Z_STREAM_END)
break;
else if (status != Z_OK)
{
printf("inflate() failed with status %i!\n", status);
return EXIT_FAILURE;
}
}
if (inflateEnd(&stream) != Z_OK)
{
printf("inflateEnd() failed!\n");
return EXIT_FAILURE;
}
}
else
{
printf("Invalid mode!\n");
return EXIT_FAILURE;
}
fclose(pInfile);
if (EOF == fclose(pOutfile))
{
printf("Failed writing to output file!\n");
return EXIT_FAILURE;
}
printf("Total input bytes: %u\n", (mz_uint32)stream.total_in);
printf("Total output bytes: %u\n", (mz_uint32)stream.total_out);
printf("Success.\n");
return EXIT_SUCCESS;
}

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// example4.c - Uses tinfl.c to decompress a zlib stream in memory to an output file
// Public domain, May 15 2011, Rich Geldreich, richgel99@gmail.com. See "unlicense" statement at the end of tinfl.c.
#include "miniz.h"
#include <stdio.h>
#include <limits.h>
typedef unsigned char uint8;
typedef unsigned short uint16;
typedef unsigned int uint;
#define my_max(a,b) (((a) > (b)) ? (a) : (b))
#define my_min(a,b) (((a) < (b)) ? (a) : (b))
static int tinfl_put_buf_func(const void* pBuf, int len, void *pUser)
{
return len == (int)fwrite(pBuf, 1, len, (FILE*)pUser);
}
int main(int argc, char *argv[])
{
int status;
FILE *pInfile, *pOutfile;
uint infile_size, outfile_size;
size_t in_buf_size;
uint8 *pCmp_data;
long file_loc;
if (argc != 3)
{
printf("Usage: example4 infile outfile\n");
printf("Decompresses zlib stream in file infile to file outfile.\n");
printf("Input file must be able to fit entirely in memory.\n");
printf("example3 can be used to create compressed zlib streams.\n");
return EXIT_FAILURE;
}
// Open input file.
pInfile = fopen(argv[1], "rb");
if (!pInfile)
{
printf("Failed opening input file!\n");
return EXIT_FAILURE;
}
// Determine input file's size.
fseek(pInfile, 0, SEEK_END);
file_loc = ftell(pInfile);
fseek(pInfile, 0, SEEK_SET);
if ((file_loc < 0) || (file_loc > INT_MAX))
{
// This is not a limitation of miniz or tinfl, but this example.
printf("File is too large to be processed by this example.\n");
return EXIT_FAILURE;
}
infile_size = (uint)file_loc;
pCmp_data = (uint8 *)malloc(infile_size);
if (!pCmp_data)
{
printf("Out of memory!\n");
return EXIT_FAILURE;
}
if (fread(pCmp_data, 1, infile_size, pInfile) != infile_size)
{
printf("Failed reading input file!\n");
return EXIT_FAILURE;
}
// Open output file.
pOutfile = fopen(argv[2], "wb");
if (!pOutfile)
{
printf("Failed opening output file!\n");
return EXIT_FAILURE;
}
printf("Input file size: %u\n", infile_size);
in_buf_size = infile_size;
status = tinfl_decompress_mem_to_callback(pCmp_data, &in_buf_size, tinfl_put_buf_func, pOutfile, TINFL_FLAG_PARSE_ZLIB_HEADER);
if (!status)
{
printf("tinfl_decompress_mem_to_callback() failed with status %i!\n", status);
return EXIT_FAILURE;
}
outfile_size = ftell(pOutfile);
fclose(pInfile);
if (EOF == fclose(pOutfile))
{
printf("Failed writing to output file!\n");
return EXIT_FAILURE;
}
printf("Total input bytes: %u\n", (uint)in_buf_size);
printf("Total output bytes: %u\n", outfile_size);
printf("Success.\n");
return EXIT_SUCCESS;
}

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// example5.c - Demonstrates how to use miniz.c's low-level tdefl_compress() and tinfl_inflate() API's for simple file to file compression/decompression.
// The low-level API's are the fastest, make no use of dynamic memory allocation, and are the most flexible functions exposed by miniz.c.
// Public domain, April 11 2012, Rich Geldreich, richgel99@gmail.com. See "unlicense" statement at the end of tinfl.c.
// For simplicity, this example is limited to files smaller than 4GB, but this is not a limitation of miniz.c.
// Purposely disable a whole bunch of stuff this low-level example doesn't use.
#define MINIZ_NO_STDIO
#define MINIZ_NO_ARCHIVE_APIS
#define MINIZ_NO_TIME
#define MINIZ_NO_ZLIB_APIS
#define MINIZ_NO_MALLOC
#include "miniz.h"
// Now include stdio.h because this test uses fopen(), etc. (but we still don't want miniz.c's stdio stuff, for testing).
#include <stdio.h>
#include <limits.h>
typedef unsigned char uint8;
typedef unsigned short uint16;
typedef unsigned int uint;
#define my_max(a,b) (((a) > (b)) ? (a) : (b))
#define my_min(a,b) (((a) < (b)) ? (a) : (b))
// IN_BUF_SIZE is the size of the file read buffer.
// IN_BUF_SIZE must be >= 1
#define IN_BUF_SIZE (1024*512)
static uint8 s_inbuf[IN_BUF_SIZE];
// COMP_OUT_BUF_SIZE is the size of the output buffer used during compression.
// COMP_OUT_BUF_SIZE must be >= 1 and <= OUT_BUF_SIZE
#define COMP_OUT_BUF_SIZE (1024*512)
// OUT_BUF_SIZE is the size of the output buffer used during decompression.
// OUT_BUF_SIZE must be a power of 2 >= TINFL_LZ_DICT_SIZE (because the low-level decompressor not only writes, but reads from the output buffer as it decompresses)
//#define OUT_BUF_SIZE (TINFL_LZ_DICT_SIZE)
#define OUT_BUF_SIZE (1024*512)
static uint8 s_outbuf[OUT_BUF_SIZE];
// tdefl_compressor contains all the state needed by the low-level compressor so it's a pretty big struct (~300k).
// This example makes it a global vs. putting it on the stack, of course in real-world usage you'll probably malloc() or new it.
tdefl_compressor g_deflator;
int main(int argc, char *argv[])
{
const char *pMode;
FILE *pInfile, *pOutfile;
uint infile_size;
int level = 9;
int p = 1;
const char *pSrc_filename;
const char *pDst_filename;
const void *next_in = s_inbuf;
size_t avail_in = 0;
void *next_out = s_outbuf;
size_t avail_out = OUT_BUF_SIZE;
size_t total_in = 0, total_out = 0;
long file_loc;
assert(COMP_OUT_BUF_SIZE <= OUT_BUF_SIZE);
printf("miniz.c example5 (demonstrates tinfl/tdefl)\n");
if (argc < 4)
{
printf("File to file compression/decompression using the low-level tinfl/tdefl API's.\n");
printf("Usage: example5 [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, 0 is none.\n");
return EXIT_FAILURE;
}
while ((p < argc) && (argv[p][0] == '-'))
{
switch (argv[p][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[p]);
return EXIT_FAILURE;
}
}
p++;
}
if ((argc - p) < 3)
{
printf("Must specify mode, input filename, and output filename after options!\n");
return EXIT_FAILURE;
}
else if ((argc - p) > 3)
{
printf("Too many filenames!\n");
return EXIT_FAILURE;
}
pMode = argv[p++];
if (!strchr("cCdD", pMode[0]))
{
printf("Invalid mode!\n");
return EXIT_FAILURE;
}
pSrc_filename = argv[p++];
pDst_filename = argv[p++];
printf("Mode: %c, Level: %u\nInput File: \"%s\"\nOutput File: \"%s\"\n", pMode[0], level, pSrc_filename, pDst_filename);
// Open input file.
pInfile = fopen(pSrc_filename, "rb");
if (!pInfile)
{
printf("Failed opening input file!\n");
return EXIT_FAILURE;
}
// Determine input file's size.
fseek(pInfile, 0, SEEK_END);
file_loc = ftell(pInfile);
fseek(pInfile, 0, SEEK_SET);
if ((file_loc < 0) || (file_loc > INT_MAX))
{
// This is not a limitation of miniz or tinfl, but this example.
printf("File is too large to be processed by this example.\n");
return EXIT_FAILURE;
}
infile_size = (uint)file_loc;
// Open output file.
pOutfile = fopen(pDst_filename, "wb");
if (!pOutfile)
{
printf("Failed opening output file!\n");
return EXIT_FAILURE;
}
printf("Input file size: %u\n", infile_size);
if ((pMode[0] == 'c') || (pMode[0] == 'C'))
{
// The number of dictionary probes to use at each compression level (0-10). 0=implies fastest/minimal possible probing.
static const mz_uint s_tdefl_num_probes[11] = { 0, 1, 6, 32, 16, 32, 128, 256, 512, 768, 1500 };
tdefl_status status;
uint infile_remaining = infile_size;
// create tdefl() compatible flags (we have to compose the low-level flags ourselves, or use tdefl_create_comp_flags_from_zip_params() but that means MINIZ_NO_ZLIB_APIS can't be defined).
mz_uint comp_flags = TDEFL_WRITE_ZLIB_HEADER | s_tdefl_num_probes[MZ_MIN(10, level)] | ((level <= 3) ? TDEFL_GREEDY_PARSING_FLAG : 0);
if (!level)
comp_flags |= TDEFL_FORCE_ALL_RAW_BLOCKS;
// Initialize the low-level compressor.
status = tdefl_init(&g_deflator, NULL, NULL, comp_flags);
if (status != TDEFL_STATUS_OKAY)
{
printf("tdefl_init() failed!\n");
return EXIT_FAILURE;
}
avail_out = COMP_OUT_BUF_SIZE;
// Compression.
for ( ; ; )
{
size_t in_bytes, out_bytes;
if (!avail_in)
{
// Input buffer is empty, so read more bytes from input file.
uint n = my_min(IN_BUF_SIZE, infile_remaining);
if (fread(s_inbuf, 1, n, pInfile) != n)
{
printf("Failed reading from input file!\n");
return EXIT_FAILURE;
}
next_in = s_inbuf;
avail_in = n;
infile_remaining -= n;
//printf("Input bytes remaining: %u\n", infile_remaining);
}
in_bytes = avail_in;
out_bytes = avail_out;
// Compress as much of the input as possible (or all of it) to the output buffer.
status = tdefl_compress(&g_deflator, next_in, &in_bytes, next_out, &out_bytes, infile_remaining ? TDEFL_NO_FLUSH : TDEFL_FINISH);
next_in = (const char *)next_in + in_bytes;
avail_in -= in_bytes;
total_in += in_bytes;
next_out = (char *)next_out + out_bytes;
avail_out -= out_bytes;
total_out += out_bytes;
if ((status != TDEFL_STATUS_OKAY) || (!avail_out))
{
// Output buffer is full, or compression is done or failed, so write buffer to output file.
uint n = COMP_OUT_BUF_SIZE - (uint)avail_out;
if (fwrite(s_outbuf, 1, n, pOutfile) != n)
{
printf("Failed writing to output file!\n");
return EXIT_FAILURE;
}
next_out = s_outbuf;
avail_out = COMP_OUT_BUF_SIZE;
}
if (status == TDEFL_STATUS_DONE)
{
// Compression completed successfully.
break;
}
else if (status != TDEFL_STATUS_OKAY)
{
// Compression somehow failed.
printf("tdefl_compress() failed with status %i!\n", status);
return EXIT_FAILURE;
}
}
}
else if ((pMode[0] == 'd') || (pMode[0] == 'D'))
{
// Decompression.
uint infile_remaining = infile_size;
tinfl_decompressor inflator;
tinfl_init(&inflator);
for ( ; ; )
{
size_t in_bytes, out_bytes;
tinfl_status status;
if (!avail_in)
{
// Input buffer is empty, so read more bytes from input file.
uint n = my_min(IN_BUF_SIZE, infile_remaining);
if (fread(s_inbuf, 1, n, pInfile) != n)
{
printf("Failed reading from input file!\n");
return EXIT_FAILURE;
}
next_in = s_inbuf;
avail_in = n;
infile_remaining -= n;
}
in_bytes = avail_in;
out_bytes = avail_out;
status = tinfl_decompress(&inflator, (const mz_uint8 *)next_in, &in_bytes, s_outbuf, (mz_uint8 *)next_out, &out_bytes, (infile_remaining ? TINFL_FLAG_HAS_MORE_INPUT : 0) | TINFL_FLAG_PARSE_ZLIB_HEADER);
avail_in -= in_bytes;
next_in = (const mz_uint8 *)next_in + in_bytes;
total_in += in_bytes;
avail_out -= out_bytes;
next_out = (mz_uint8 *)next_out + out_bytes;
total_out += out_bytes;
if ((status <= TINFL_STATUS_DONE) || (!avail_out))
{
// Output buffer is full, or decompression is done, so write buffer to output file.
uint n = OUT_BUF_SIZE - (uint)avail_out;
if (fwrite(s_outbuf, 1, n, pOutfile) != n)
{
printf("Failed writing to output file!\n");
return EXIT_FAILURE;
}
next_out = s_outbuf;
avail_out = OUT_BUF_SIZE;
}
// If status is <= TINFL_STATUS_DONE then either decompression is done or something went wrong.
if (status <= TINFL_STATUS_DONE)
{
if (status == TINFL_STATUS_DONE)
{
// Decompression completed successfully.
break;
}
else
{
// Decompression failed.
printf("tinfl_decompress() failed with status %i!\n", status);
return EXIT_FAILURE;
}
}
}
}
else
{
printf("Invalid mode!\n");
return EXIT_FAILURE;
}
fclose(pInfile);
if (EOF == fclose(pOutfile))
{
printf("Failed writing to output file!\n");
return EXIT_FAILURE;
}
printf("Total input bytes: %u\n", (mz_uint32)total_in);
printf("Total output bytes: %u\n", (mz_uint32)total_out);
printf("Success.\n");
return EXIT_SUCCESS;
}

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// example6.c - Demonstrates how to miniz's PNG writer func
// Public domain, April 11 2012, Rich Geldreich, richgel99@gmail.com. See "unlicense" statement at the end of tinfl.c.
// Mandlebrot set code from http://rosettacode.org/wiki/Mandelbrot_set#C
// Must link this example against libm on Linux.
// Purposely disable a whole bunch of stuff this low-level example doesn't use.
#define MINIZ_NO_STDIO
#define MINIZ_NO_TIME
#define MINIZ_NO_ZLIB_APIS
#include "miniz.h"
// Now include stdio.h because this test uses fopen(), etc. (but we still don't want miniz.c's stdio stuff, for testing).
#include <stdio.h>
#include <limits.h>
#include <math.h>
typedef unsigned char uint8;
typedef unsigned short uint16;
typedef unsigned int uint;
typedef struct
{
uint8 r, g, b;
} rgb_t;
static void hsv_to_rgb(int hue, int min, int max, rgb_t *p)
{
const int invert = 0;
const int saturation = 1;
const int color_rotate = 0;
if (min == max) max = min + 1;
if (invert) hue = max - (hue - min);
if (!saturation) {
p->r = p->g = p->b = 255 * (max - hue) / (max - min);
return;
}
double h = fmod(color_rotate + 1e-4 + 4.0 * (hue - min) / (max - min), 6);
double c = 255.0f * saturation;
double X = c * (1 - fabs(fmod(h, 2) - 1));
p->r = p->g = p->b = 0;
switch((int)h) {
case 0: p->r = c; p->g = X; return;
case 1: p->r = X; p->g = c; return;
case 2: p->g = c; p->b = X; return;
case 3: p->g = X; p->b = c; return;
case 4: p->r = X; p->b = c; return;
default:p->r = c; p->b = X;
}
}
int main(int argc, char *argv[])
{
(void)argc, (void)argv;
// Image resolution
const int iXmax = 4096;
const int iYmax = 4096;
// Output filename
static const char *pFilename = "mandelbrot.png";
int iX, iY;
const double CxMin = -2.5;
const double CxMax = 1.5;
const double CyMin = -2.0;
const double CyMax = 2.0;
double PixelWidth = (CxMax - CxMin) / iXmax;
double PixelHeight = (CyMax - CyMin) / iYmax;
// Z=Zx+Zy*i ; Z0 = 0
double Zx, Zy;
double Zx2, Zy2; // Zx2=Zx*Zx; Zy2=Zy*Zy
int Iteration;
const int IterationMax = 200;
// bail-out value , radius of circle
const double EscapeRadius = 2;
double ER2=EscapeRadius * EscapeRadius;
uint8 *pImage = (uint8 *)malloc(iXmax * 3 * iYmax);
// world ( double) coordinate = parameter plane
double Cx,Cy;
int MinIter = 9999, MaxIter = 0;
for(iY = 0; iY < iYmax; iY++)
{
Cy = CyMin + iY * PixelHeight;
if (fabs(Cy) < PixelHeight/2)
Cy = 0.0; // Main antenna
for(iX = 0; iX < iXmax; iX++)
{
uint8 *color = pImage + (iX * 3) + (iY * iXmax * 3);
Cx = CxMin + iX * PixelWidth;
// initial value of orbit = critical point Z= 0
Zx = 0.0;
Zy = 0.0;
Zx2 = Zx * Zx;
Zy2 = Zy * Zy;
for (Iteration=0;Iteration<IterationMax && ((Zx2+Zy2)<ER2);Iteration++)
{
Zy = 2 * Zx * Zy + Cy;
Zx =Zx2 - Zy2 + Cx;
Zx2 = Zx * Zx;
Zy2 = Zy * Zy;
};
color[0] = (uint8)Iteration;
color[1] = (uint8)Iteration >> 8;
color[2] = 0;
if (Iteration < MinIter)
MinIter = Iteration;
if (Iteration > MaxIter)
MaxIter = Iteration;
}
}
for(iY = 0; iY < iYmax; iY++)
{
for(iX = 0; iX < iXmax; iX++)
{
uint8 *color = (uint8 *)(pImage + (iX * 3) + (iY * iXmax * 3));
uint Iterations = color[0] | (color[1] << 8U);
hsv_to_rgb(Iterations, MinIter, MaxIter, (rgb_t *)color);
}
}
// Now write the PNG image.
{
size_t png_data_size = 0;
void *pPNG_data = tdefl_write_image_to_png_file_in_memory_ex(pImage, iXmax, iYmax, 3, &png_data_size, 6, MZ_FALSE);
if (!pPNG_data)
fprintf(stderr, "tdefl_write_image_to_png_file_in_memory_ex() failed!\n");
else
{
FILE *pFile = fopen(pFilename, "wb");
fwrite(pPNG_data, 1, png_data_size, pFile);
fclose(pFile);
printf("Wrote %s\n", pFilename);
}
// mz_free() is by default just an alias to free() internally, but if you've overridden miniz's allocation funcs you'll probably need to call mz_free().
mz_free(pPNG_data);
}
free(pImage);
return EXIT_SUCCESS;
}

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## Miniz
Miniz is a lossless, high performance data compression library in a single source file that implements the zlib (RFC 1950) and Deflate (RFC 1951) compressed data format specification standards. It supports the most commonly used functions exported by the zlib library, but is a completely independent implementation so zlib's licensing requirements do not apply. Miniz also contains simple to use functions for writing .PNG format image files and reading/writing/appending .ZIP format archives. Miniz's compression speed has been tuned to be comparable to zlib's, and it also has a specialized real-time compressor function designed to compare well against fastlz/minilzo.
## Usage
Please use the files from the [releases page](https://github.com/richgel999/miniz/releases) in your projects. Do not use the git checkout directly! The different source and header files are [amalgamated](https://www.sqlite.org/amalgamation.html) into one `miniz.c`/`miniz.h` pair in a build step (`amalgamate.sh`). Include `miniz.c` and `miniz.h` in your project to use Miniz.
## Features
* MIT licensed
* A portable, single source and header file library written in plain C. Tested with GCC, clang and Visual Studio.
* Easily tuned and trimmed down by defines
* A drop-in replacement for zlib's most used API's (tested in several open source projects that use zlib, such as libpng and libzip).
* Fills a single threaded performance vs. compression ratio gap between several popular real-time compressors and zlib. For example, at level 1, miniz.c compresses around 5-9% better than minilzo, but is approx. 35% slower. At levels 2-9, miniz.c is designed to compare favorably against zlib's ratio and speed. See the miniz performance comparison page for example timings.
* Not a block based compressor: miniz.c fully supports stream based processing using a coroutine-style implementation. The zlib-style API functions can be called a single byte at a time if that's all you've got.
* Easy to use. The low-level compressor (tdefl) and decompressor (tinfl) have simple state structs which can be saved/restored as needed with simple memcpy's. The low-level codec API's don't use the heap in any way.
* Entire inflater (including optional zlib header parsing and Adler-32 checking) is implemented in a single function as a coroutine, which is separately available in a small (~550 line) source file: miniz_tinfl.c
* A fairly complete (but totally optional) set of .ZIP archive manipulation and extraction API's. The archive functionality is intended to solve common problems encountered in embedded, mobile, or game development situations. (The archive API's are purposely just powerful enough to write an entire archiver given a bit of additional higher-level logic.)
## Known Problems
* No support for encrypted archives. Not sure how useful this stuff is in practice.
* Minimal documentation. The assumption is that the user is already familiar with the basic zlib API. I need to write an API wiki - for now I've tried to place key comments before each enum/API, and I've included 6 examples that demonstrate how to use the module's major features.
## Special Thanks
Thanks to Alex Evans for the PNG writer function. Also, thanks to Paul Holden and Thorsten Scheuermann for feedback and testing, Matt Pritchard for all his encouragement, and Sean Barrett's various public domain libraries for inspiration (and encouraging me to write miniz.c in C, which was much more enjoyable and less painful than I thought it would be considering I've been programming in C++ for so long).
Thanks to Bruce Dawson for reporting a problem with the level_and_flags archive API parameter (which is fixed in v1.12) and general feedback, and Janez Zemva for indirectly encouraging me into writing more examples.
## Patents
I was recently asked if miniz avoids patent issues. miniz purposely uses the same core algorithms as the ones used by zlib. The compressor uses vanilla hash chaining as described [here](https://datatracker.ietf.org/doc/html/rfc1951#section-4). Also see the [gzip FAQ](https://web.archive.org/web/20160308045258/http://www.gzip.org/#faq11). In my opinion, if miniz falls prey to a patent attack then zlib/gzip are likely to be at serious risk too.