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355 lines
8.8 KiB
C
355 lines
8.8 KiB
C
/* mz_os.c -- System functions
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part of the minizip-ng project
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Copyright (C) 2010-2021 Nathan Moinvaziri
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https://github.com/zlib-ng/minizip-ng
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Copyright (C) 1998-2010 Gilles Vollant
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https://www.winimage.com/zLibDll/minizip.html
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This program is distributed under the terms of the same license as zlib.
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See the accompanying LICENSE file for the full text of the license.
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*/
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#include "mz.h"
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#include "mz_crypt.h"
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#include "mz_os.h"
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#include "mz_strm.h"
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#include "mz_strm_os.h"
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#include <ctype.h> /* tolower */
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/***************************************************************************/
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int32_t mz_path_combine(char *path, const char *join, int32_t max_path) {
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int32_t path_len = 0;
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if (path == NULL || join == NULL || max_path == 0)
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return MZ_PARAM_ERROR;
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path_len = (int32_t)strlen(path);
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if (path_len == 0) {
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strncpy(path, join, max_path - 1);
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path[max_path - 1] = 0;
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} else {
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mz_path_append_slash(path, max_path, MZ_PATH_SLASH_PLATFORM);
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strncat(path, join, max_path - path_len);
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}
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return MZ_OK;
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}
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int32_t mz_path_append_slash(char *path, int32_t max_path, char slash) {
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int32_t path_len = (int32_t)strlen(path);
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if ((path_len + 2) >= max_path)
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return MZ_BUF_ERROR;
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if (path[path_len - 1] != '\\' && path[path_len - 1] != '/') {
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path[path_len] = slash;
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path[path_len + 1] = 0;
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}
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return MZ_OK;
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}
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int32_t mz_path_remove_slash(char *path) {
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int32_t path_len = (int32_t)strlen(path);
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while (path_len > 0) {
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if (path[path_len - 1] == '\\' || path[path_len - 1] == '/')
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path[path_len - 1] = 0;
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else
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break;
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path_len -= 1;
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}
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return MZ_OK;
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}
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int32_t mz_path_has_slash(const char *path) {
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int32_t path_len = (int32_t)strlen(path);
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if (path[path_len - 1] != '\\' && path[path_len - 1] != '/')
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return MZ_EXIST_ERROR;
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return MZ_OK;
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}
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int32_t mz_path_convert_slashes(char *path, char slash) {
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int32_t i = 0;
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for (i = 0; i < (int32_t)strlen(path); i += 1) {
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if (path[i] == '\\' || path[i] == '/')
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path[i] = slash;
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}
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return MZ_OK;
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}
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int32_t mz_path_compare_wc(const char *path, const char *wildcard, uint8_t ignore_case) {
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while (*path != 0) {
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switch (*wildcard) {
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case '*':
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if (*(wildcard + 1) == 0)
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return MZ_OK;
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while (*path != 0) {
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if (mz_path_compare_wc(path, (wildcard + 1), ignore_case) == MZ_OK)
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return MZ_OK;
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path += 1;
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}
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return MZ_EXIST_ERROR;
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default:
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/* Ignore differences in path slashes on platforms */
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if ((*path == '\\' && *wildcard == '/') || (*path == '/' && *wildcard == '\\'))
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break;
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if (ignore_case) {
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if (tolower(*path) != tolower(*wildcard))
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return MZ_EXIST_ERROR;
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} else {
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if (*path != *wildcard)
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return MZ_EXIST_ERROR;
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}
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break;
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}
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path += 1;
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wildcard += 1;
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}
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if ((*wildcard != 0) && (*wildcard != '*'))
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return MZ_EXIST_ERROR;
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return MZ_OK;
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}
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int32_t mz_path_resolve(const char *path, char *output, int32_t max_output) {
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const char *source = path;
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const char *check = output;
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char *target = output;
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if (max_output <= 0)
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return MZ_PARAM_ERROR;
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while (*source != 0 && max_output > 1) {
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check = source;
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if ((*check == '\\') || (*check == '/'))
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check += 1;
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if ((source == path) || (target == output) || (check != source)) {
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/* Skip double paths */
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if ((*check == '\\') || (*check == '/')) {
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source += 1;
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continue;
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}
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if (*check == '.') {
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check += 1;
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/* Remove . if at end of string and not at the beginning */
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if ((*check == 0) && (source != path && target != output)) {
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/* Copy last slash */
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*target = *source;
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target += 1;
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max_output -= 1;
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source += (check - source);
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continue;
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}
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/* Remove . if not at end of string */
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else if ((*check == '\\') || (*check == '/')) {
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source += (check - source);
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/* Skip slash if at beginning of string */
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if (target == output && *source != 0)
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source += 1;
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continue;
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}
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/* Go to parent directory .. */
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else if (*check == '.') {
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check += 1;
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if ((*check == 0) || (*check == '\\' || *check == '/')) {
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source += (check - source);
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/* Search backwards for previous slash */
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if (target != output) {
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target -= 1;
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do {
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if ((*target == '\\') || (*target == '/'))
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break;
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target -= 1;
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max_output += 1;
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} while (target > output);
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}
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if ((target == output) && (*source != 0))
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source += 1;
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if ((*target == '\\' || *target == '/') && (*source == 0))
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target += 1;
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*target = 0;
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continue;
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}
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}
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}
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}
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*target = *source;
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source += 1;
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target += 1;
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max_output -= 1;
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}
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*target = 0;
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if (*path == 0)
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return MZ_INTERNAL_ERROR;
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return MZ_OK;
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}
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int32_t mz_path_remove_filename(char *path) {
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char *path_ptr = NULL;
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if (path == NULL)
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return MZ_PARAM_ERROR;
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path_ptr = path + strlen(path) - 1;
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while (path_ptr > path) {
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if ((*path_ptr == '/') || (*path_ptr == '\\')) {
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*path_ptr = 0;
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break;
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}
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path_ptr -= 1;
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}
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if (path_ptr == path)
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*path_ptr = 0;
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return MZ_OK;
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}
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int32_t mz_path_remove_extension(char *path) {
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char *path_ptr = NULL;
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if (path == NULL)
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return MZ_PARAM_ERROR;
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path_ptr = path + strlen(path) - 1;
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while (path_ptr > path) {
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if ((*path_ptr == '/') || (*path_ptr == '\\'))
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break;
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if (*path_ptr == '.') {
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*path_ptr = 0;
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break;
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}
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path_ptr -= 1;
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}
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if (path_ptr == path)
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*path_ptr = 0;
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return MZ_OK;
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}
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int32_t mz_path_get_filename(const char *path, const char **filename) {
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const char *match = NULL;
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if (path == NULL || filename == NULL)
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return MZ_PARAM_ERROR;
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*filename = NULL;
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for (match = path; *match != 0; match += 1) {
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if ((*match == '\\') || (*match == '/'))
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*filename = match + 1;
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}
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if (*filename == NULL)
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return MZ_EXIST_ERROR;
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return MZ_OK;
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}
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int32_t mz_dir_make(const char *path) {
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int32_t err = MZ_OK;
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int16_t len = 0;
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char *current_dir = NULL;
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char *match = NULL;
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char hold = 0;
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len = (int16_t)strlen(path);
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if (len <= 0)
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return 0;
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current_dir = (char *)MZ_ALLOC((uint16_t)len + 1);
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if (current_dir == NULL)
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return MZ_MEM_ERROR;
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strcpy(current_dir, path);
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mz_path_remove_slash(current_dir);
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err = mz_os_make_dir(current_dir);
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if (err != MZ_OK) {
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match = current_dir + 1;
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while (1) {
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while (*match != 0 && *match != '\\' && *match != '/')
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match += 1;
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hold = *match;
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*match = 0;
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err = mz_os_make_dir(current_dir);
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if (err != MZ_OK)
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break;
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if (hold == 0)
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break;
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*match = hold;
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match += 1;
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}
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}
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MZ_FREE(current_dir);
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return err;
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}
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int32_t mz_file_get_crc(const char *path, uint32_t *result_crc) {
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void *stream = NULL;
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uint32_t crc32 = 0;
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int32_t read = 0;
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int32_t err = MZ_OK;
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uint8_t buf[16384];
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mz_stream_os_create(&stream);
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err = mz_stream_os_open(stream, path, MZ_OPEN_MODE_READ);
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if (err == MZ_OK) {
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do {
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read = mz_stream_os_read(stream, buf, sizeof(buf));
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if (read < 0) {
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err = read;
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break;
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}
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crc32 = mz_crypt_crc32_update(crc32, buf, read);
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} while ((err == MZ_OK) && (read > 0));
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mz_stream_os_close(stream);
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}
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*result_crc = crc32;
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mz_stream_os_delete(&stream);
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return err;
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}
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/***************************************************************************/
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