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195 lines (152 loc) · 4.24 KB
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/* mz_os.c -- System functions
Version 2.3.2, May 29, 2018
part of the MiniZip project
Copyright (C) 2010-2018 Nathan Moinvaziri
https://github.com/nmoinvaz/minizip
Copyright (C) 1998-2010 Gilles Vollant
http://www.winimage.com/zLibDll/minizip.html
This program is distributed under the terms of the same license as zlib.
See the accompanying LICENSE file for the full text of the license.
*/
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include "mz.h"
#include "mz_os.h"
#include "mz_strm.h"
#ifdef HAVE_LZMA
# include "mz_strm_lzma.h"
#endif
#ifdef HAVE_ZLIB
# include "mz_strm_zlib.h"
#endif
/***************************************************************************/
int32_t mz_make_dir(const char *path)
{
int32_t err = MZ_OK;
int16_t len = 0;
char *current_dir = NULL;
char *match = NULL;
char hold = 0;
len = (int16_t)strlen(path);
if (len <= 0)
return 0;
current_dir = (char *)MZ_ALLOC(len + 1);
if (current_dir == NULL)
return MZ_MEM_ERROR;
strcpy(current_dir, path);
if (current_dir[len - 1] == '/')
current_dir[len - 1] = 0;
err = mz_os_make_dir(current_dir);
if (err != MZ_OK)
{
match = current_dir + 1;
while (1)
{
while (*match != 0 && *match != '\\' && *match != '/')
match += 1;
hold = *match;
*match = 0;
err = mz_os_make_dir(current_dir);
if (err != MZ_OK)
break;
if (hold == 0)
break;
*match = hold;
match += 1;
}
}
MZ_FREE(current_dir);
return err;
}
int32_t mz_path_combine(char *path, const char *join, int32_t max_path)
{
int32_t path_len = 0;
if (path == NULL || join == NULL || max_path == 0)
return MZ_PARAM_ERROR;
path_len = strlen(path);
if (path_len == 0)
{
strncpy(path, join, max_path);
}
else
{
if (path[path_len - 1] != '\\' && path[path_len - 1] != '/')
strncat(path, "/", max_path - path_len - 1);
strncat(path, join, max_path - path_len);
}
return MZ_OK;
}
int32_t mz_path_remove_filename(const char *path)
{
char *path_ptr = NULL;
if (path == NULL)
return MZ_PARAM_ERROR;
path_ptr = (char *)(path + strlen(path) - 1);
while (path_ptr > path)
{
if ((*path_ptr == '/') || (*path_ptr == '\\'))
{
*path_ptr = 0;
break;
}
path_ptr -= 1;
}
return MZ_OK;
}
int32_t mz_path_get_filename(const char *path, const char **filename)
{
const char *match = NULL;
if (path == NULL || filename == NULL)
return MZ_PARAM_ERROR;
*filename = NULL;
for (match = path; *match != 0; match += 1)
{
if ((*match == '\\') || (*match == '/'))
*filename = match + 1;
}
if (*filename == NULL)
return MZ_EXIST_ERROR;
return MZ_OK;
}
int32_t mz_get_file_crc(const char *path, uint32_t *result_crc)
{
void *stream = NULL;
void *crc32_stream = NULL;
int32_t read = 0;
int32_t err = MZ_OK;
uint8_t buf[INT16_MAX];
mz_stream_os_create(&stream);
err = mz_stream_os_open(stream, path, MZ_OPEN_MODE_READ);
mz_stream_crc32_create(&crc32_stream);
#ifdef HAVE_ZLIB
mz_stream_crc32_set_update_func(crc32_stream,
(mz_stream_crc32_update)mz_stream_zlib_get_crc32_update());
#elif defined(HAVE_LZMA)
mz_stream_crc32_set_update_func(crc32_stream,
(mz_stream_crc32_update)mz_stream_lzma_get_crc32_update());
#else
#error ZLIB or LZMA required for CRC32
#endif
mz_stream_crc32_open(crc32_stream, NULL, MZ_OPEN_MODE_READ);
mz_stream_set_base(crc32_stream, stream);
if (err == MZ_OK)
{
do
{
read = mz_stream_crc32_read(crc32_stream, buf, sizeof(buf));
if (read < 0)
{
err = read;
break;
}
}
while ((err == MZ_OK) && (read > 0));
mz_stream_os_close(stream);
}
mz_stream_crc32_close(crc32_stream);
*result_crc = mz_stream_crc32_get_value(crc32_stream);
mz_stream_crc32_delete(&crc32_stream);
mz_stream_os_delete(&stream);
return err;
}