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401 lines (319 loc) · 9.23 KB
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/* mz_os.c -- System functions
Version 2.9.2, February 12, 2020
part of the MiniZip project
Copyright (C) 2010-2020 Nathan Moinvaziri
https://github.com/nmoinvaz/minizip
Copyright (C) 1998-2010 Gilles Vollant
https://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 "mz.h"
#include "mz_crypt.h"
#include "mz_os.h"
#include "mz_strm.h"
#include "mz_strm_os.h"
#include <ctype.h> /* tolower */
/***************************************************************************/
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 = (int32_t)strlen(path);
if (path_len == 0)
{
strncpy(path, join, max_path - 1);
path[max_path - 1] = 0;
}
else
{
mz_path_append_slash(path, max_path, MZ_PATH_SLASH_PLATFORM);
strncat(path, join, max_path - path_len);
}
return MZ_OK;
}
int32_t mz_path_append_slash(char *path, int32_t max_path, char slash)
{
int32_t path_len = (int32_t)strlen(path);
if ((path_len + 2) >= max_path)
return MZ_BUF_ERROR;
if (path[path_len - 1] != '\\' && path[path_len - 1] != '/')
{
path[path_len] = slash;
path[path_len + 1] = 0;
}
return MZ_OK;
}
int32_t mz_path_remove_slash(char *path)
{
int32_t path_len = (int32_t)strlen(path);
while (path_len > 0)
{
if (path[path_len - 1] == '\\' || path[path_len - 1] == '/')
path[path_len - 1] = 0;
else
break;
path_len -= 1;
}
return MZ_OK;
}
int32_t mz_path_has_slash(const char *path)
{
int32_t path_len = (int32_t)strlen(path);
if (path[path_len - 1] != '\\' && path[path_len - 1] != '/')
return MZ_EXIST_ERROR;
return MZ_OK;
}
int32_t mz_path_convert_slashes(char *path, char slash)
{
int32_t i = 0;
for (i = 0; i < (int32_t)strlen(path); i += 1)
{
if (path[i] == '\\' || path[i] == '/')
path[i] = slash;
}
return MZ_OK;
}
int32_t mz_path_compare_wc(const char *path, const char *wildcard, uint8_t ignore_case)
{
while (*path != 0)
{
switch (*wildcard)
{
case '*':
if (*(wildcard + 1) == 0)
return MZ_OK;
while (*path != 0)
{
if (mz_path_compare_wc(path, (wildcard + 1), ignore_case) == MZ_OK)
return MZ_OK;
path += 1;
}
return MZ_EXIST_ERROR;
default:
/* Ignore differences in path slashes on platforms */
if ((*path == '\\' && *wildcard == '/') || (*path == '/' && *wildcard == '\\'))
break;
if (ignore_case)
{
if (tolower(*path) != tolower(*wildcard))
return MZ_EXIST_ERROR;
}
else
{
if (*path != *wildcard)
return MZ_EXIST_ERROR;
}
break;
}
path += 1;
wildcard += 1;
}
if ((*wildcard != 0) && (*wildcard != '*'))
return MZ_EXIST_ERROR;
return MZ_OK;
}
int32_t mz_path_resolve(const char *path, char *output, int32_t max_output)
{
const char *source = path;
const char *check = output;
char *target = output;
if (max_output <= 0)
return MZ_PARAM_ERROR;
while (*source != 0 && max_output > 1)
{
check = source;
if ((*check == '\\') || (*check == '/'))
check += 1;
if ((source == path) || (target == output) || (check != source))
{
/* Skip double paths */
if ((*check == '\\') || (*check == '/'))
{
source += 1;
continue;
}
if ((*check != 0) && (*check == '.'))
{
check += 1;
/* Remove . if at end of string and not at the beginning */
if ((*check == 0) && (source != path && target != output))
{
/* Copy last slash */
*target = *source;
target += 1;
max_output -= 1;
source += (check - source);
continue;
}
/* Remove . if not at end of string */
else if ((*check == '\\') || (*check == '/'))
{
source += (check - source);
/* Skip slash if at beginning of string */
if (target == output && *source != 0)
source += 1;
continue;
}
/* Go to parent directory .. */
else if (*check == '.')
{
check += 1;
if ((*check == 0) || (*check == '\\' || *check == '/'))
{
source += (check - source);
/* Search backwards for previous slash */
if (target != output)
{
target -= 1;
do
{
if ((*target == '\\') || (*target == '/'))
break;
target -= 1;
max_output += 1;
}
while (target > output);
}
if ((target == output) && (*source != 0))
source += 1;
if ((*target == '\\' || *target == '/') && (*source == 0))
target += 1;
*target = 0;
continue;
}
}
}
}
*target = *source;
source += 1;
target += 1;
max_output -= 1;
}
*target = 0;
if (*path == 0)
return MZ_INTERNAL_ERROR;
return MZ_OK;
}
int32_t mz_path_remove_filename(char *path)
{
char *path_ptr = NULL;
if (path == NULL)
return MZ_PARAM_ERROR;
path_ptr = path + strlen(path) - 1;
while (path_ptr > path)
{
if ((*path_ptr == '/') || (*path_ptr == '\\'))
{
*path_ptr = 0;
break;
}
path_ptr -= 1;
}
if (path_ptr == path)
*path_ptr = 0;
return MZ_OK;
}
int32_t mz_path_remove_extension(char *path)
{
char *path_ptr = NULL;
if (path == NULL)
return MZ_PARAM_ERROR;
path_ptr = path + strlen(path) - 1;
while (path_ptr > path)
{
if ((*path_ptr == '/') || (*path_ptr == '\\'))
break;
if (*path_ptr == '.')
{
*path_ptr = 0;
break;
}
path_ptr -= 1;
}
if (path_ptr == path)
*path_ptr = 0;
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_dir_make(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((uint16_t)len + 1);
if (current_dir == NULL)
return MZ_MEM_ERROR;
strcpy(current_dir, path);
mz_path_remove_slash(current_dir);
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_file_get_crc(const char *path, uint32_t *result_crc)
{
void *stream = NULL;
uint32_t crc32 = 0;
int32_t read = 0;
int32_t err = MZ_OK;
uint8_t buf[16384];
mz_stream_os_create(&stream);
err = mz_stream_os_open(stream, path, MZ_OPEN_MODE_READ);
if (err == MZ_OK)
{
do
{
read = mz_stream_os_read(stream, buf, sizeof(buf));
if (read < 0)
{
err = read;
break;
}
crc32 = mz_crypt_crc32_update(crc32, buf, read);
}
while ((err == MZ_OK) && (read > 0));
mz_stream_os_close(stream);
}
*result_crc = crc32;
mz_stream_os_delete(&stream);
return err;
}
/***************************************************************************/