mirror of
https://github.com/zlib-ng/minizip-ng
synced 2025-03-28 21:13:18 +00:00
153 lines
3.4 KiB
C
153 lines
3.4 KiB
C
/* mz_os.c -- System functions
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Version 2.3.0, May 3rd, 2018
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part of the MiniZip project
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Copyright (C) 2010-2018 Nathan Moinvaziri
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https://github.com/nmoinvaz/minizip
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Copyright (C) 1998-2010 Gilles Vollant
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http://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 <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include "mz.h"
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#include "mz_os.h"
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#include "mz_strm.h"
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#ifdef HAVE_LZMA
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# include "mz_strm_lzma.h"
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#endif
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#ifdef HAVE_ZLIB
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# include "mz_strm_zlib.h"
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#endif
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/***************************************************************************/
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int32_t mz_make_dir(const char *path)
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{
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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(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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if (current_dir[len - 1] == '/')
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current_dir[len - 1] = 0;
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err = mz_os_make_dir(current_dir);
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if (err != MZ_OK)
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{
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match = current_dir + 1;
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while (1)
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{
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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_path_combine(char *path, const char *join, int32_t max_path)
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{
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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 = strlen(path);
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if (path_len == 0)
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{
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strncpy(path, join, max_path);
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}
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else
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{
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if (path[path_len - 1] != '\\' && path[path_len - 1] != '/')
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strncat(path, "/", max_path - path_len - 1);
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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_get_file_crc(const char *path, uint32_t *result_crc)
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{
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void *stream = NULL;
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void *crc32_stream = NULL;
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int32_t read = 0;
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int32_t err = MZ_OK;
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uint8_t buf[INT16_MAX];
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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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mz_stream_crc32_create(&crc32_stream);
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#ifdef HAVE_ZLIB
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mz_stream_crc32_set_update_func(crc32_stream,
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(mz_stream_crc32_update)mz_stream_zlib_get_crc32_update());
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#elif defined(HAVE_LZMA)
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mz_stream_crc32_set_update_func(crc32_stream,
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(mz_stream_crc32_update)mz_stream_lzma_get_crc32_update());
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#else
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#error ZLIB or LZMA required for CRC32
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#endif
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mz_stream_crc32_open(crc32_stream, NULL, MZ_OPEN_MODE_READ);
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mz_stream_set_base(crc32_stream, stream);
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if (err == MZ_OK)
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{
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do
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{
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read = mz_stream_crc32_read(crc32_stream, buf, sizeof(buf));
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if (read < 0)
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{
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err = read;
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break;
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}
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}
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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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mz_stream_crc32_close(crc32_stream);
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*result_crc = mz_stream_crc32_get_value(crc32_stream);
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mz_stream_crc32_delete(&crc32_stream);
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mz_stream_os_delete(&stream);
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return err;
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}
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