// 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,
[email protected]. 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;
}
