mirror of
https://github.com/obsproject/obs-studio.git
synced 2024-09-20 21:13:04 +02:00
417 lines
7.5 KiB
C
417 lines
7.5 KiB
C
/*
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* Copyright (c) 2013-2014 Hugh Bailey <obs.jim@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#define _FILE_OFFSET_BITS 64
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#include <errno.h>
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#include <stdlib.h>
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#include "c99defs.h"
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#include "platform.h"
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#include "bmem.h"
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#include "utf8.h"
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#include "dstr.h"
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FILE *os_wfopen(const wchar_t *path, const char *mode)
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{
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FILE *file = NULL;
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if (path) {
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#ifdef _MSC_VER
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wchar_t *wcs_mode;
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os_utf8_to_wcs_ptr(mode, 0, &wcs_mode);
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file = _wfopen(path, wcs_mode);
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bfree(wcs_mode);
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#else
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char *mbs_path;
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os_wcs_to_utf8_ptr(path, 0, &mbs_path);
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file = fopen(mbs_path, mode);
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bfree(mbs_path);
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#endif
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}
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return file;
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}
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FILE *os_fopen(const char *path, const char *mode)
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{
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#ifdef _WIN32
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wchar_t *wpath = NULL;
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FILE *file = NULL;
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if (path) {
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os_utf8_to_wcs_ptr(path, 0, &wpath);
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file = os_wfopen(wpath, mode);
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bfree(wpath);
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}
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return file;
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#else
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return path ? fopen(path, mode) : NULL;
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#endif
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}
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int64_t os_fgetsize(FILE *file)
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{
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int64_t cur_offset = os_ftelli64(file);
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int64_t size;
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int errval = 0;
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if (fseek(file, 0, SEEK_END) == -1)
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return -1;
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size = os_ftelli64(file);
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if (size == -1)
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errval = errno;
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if (os_fseeki64(file, cur_offset, SEEK_SET) != 0 && errval != 0)
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errno = errval;
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return size;
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}
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int os_fseeki64(FILE *file, int64_t offset, int origin)
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{
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#ifdef _MSC_VER
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return _fseeki64(file, offset, origin);
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#else
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return fseeko(file, offset, origin);
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#endif
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}
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int64_t os_ftelli64(FILE *file)
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{
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#ifdef _MSC_VER
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return _ftelli64(file);
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#else
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return ftello(file);
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#endif
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}
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size_t os_fread_mbs(FILE *file, char **pstr)
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{
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size_t size = 0;
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size_t len = 0;
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fseek(file, 0, SEEK_END);
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size = (size_t)os_ftelli64(file);
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*pstr = NULL;
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if (size > 0) {
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char *mbstr = bmalloc(size+1);
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fseek(file, 0, SEEK_SET);
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size = fread(mbstr, 1, size, file);
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if (size == 0) {
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bfree(mbstr);
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return 0;
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}
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mbstr[size] = 0;
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len = os_mbs_to_utf8_ptr(mbstr, size, pstr);
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bfree(mbstr);
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}
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return len;
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}
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size_t os_fread_utf8(FILE *file, char **pstr)
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{
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size_t size = 0;
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size_t size_read;
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size_t len = 0;
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*pstr = NULL;
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fseek(file, 0, SEEK_END);
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size = (size_t)os_ftelli64(file);
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if (size > 0) {
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char bom[3];
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char *utf8str;
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off_t offset;
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/* remove the ghastly BOM if present */
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fseek(file, 0, SEEK_SET);
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size_read = fread(bom, 1, 3, file);
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if (size_read != 3)
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return 0;
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offset = (astrcmp_n(bom, "\xEF\xBB\xBF", 3) == 0) ? 3 : 0;
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size -= offset;
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if (size == 0)
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return 0;
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utf8str = bmalloc(size+1);
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fseek(file, offset, SEEK_SET);
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size = fread(utf8str, 1, size, file);
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if (size == 0) {
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bfree(utf8str);
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return 0;
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}
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utf8str[size] = 0;
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*pstr = utf8str;
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}
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return len;
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}
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char *os_quick_read_mbs_file(const char *path)
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{
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FILE *f = os_fopen(path, "rb");
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char *file_string = NULL;
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if (!f)
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return NULL;
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os_fread_mbs(f, &file_string);
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fclose(f);
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return file_string;
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}
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char *os_quick_read_utf8_file(const char *path)
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{
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FILE *f = os_fopen(path, "rb");
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char *file_string = NULL;
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if (!f)
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return NULL;
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os_fread_utf8(f, &file_string);
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fclose(f);
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return file_string;
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}
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bool os_quick_write_mbs_file(const char *path, const char *str, size_t len)
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{
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FILE *f = os_fopen(path, "wb");
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char *mbs = NULL;
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size_t mbs_len = 0;
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if (!f)
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return false;
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mbs_len = os_utf8_to_mbs_ptr(str, len, &mbs);
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if (mbs_len)
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fwrite(mbs, 1, mbs_len, f);
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bfree(mbs);
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fclose(f);
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return true;
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}
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bool os_quick_write_utf8_file(const char *path, const char *str, size_t len,
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bool marker)
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{
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FILE *f = os_fopen(path, "wb");
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if (!f)
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return false;
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if (marker)
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fwrite("\xEF\xBB\xBF", 1, 3, f);
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if (len)
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fwrite(str, 1, len, f);
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fclose(f);
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return true;
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}
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size_t os_mbs_to_wcs(const char *str, size_t len, wchar_t *dst, size_t dst_size)
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{
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size_t out_len;
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if (!str)
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return 0;
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out_len = dst ? (dst_size - 1) : mbstowcs(NULL, str, len);
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if (len && dst) {
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if (!dst_size)
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return 0;
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if (out_len)
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out_len = mbstowcs(dst, str, out_len + 1);
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dst[out_len] = 0;
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}
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return out_len;
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}
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size_t os_utf8_to_wcs(const char *str, size_t len, wchar_t *dst,
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size_t dst_size)
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{
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size_t in_len;
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size_t out_len;
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if (!str)
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return 0;
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in_len = len ? len : strlen(str);
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out_len = dst ? (dst_size - 1) : utf8_to_wchar(str, in_len, NULL, 0, 0);
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if (out_len && dst) {
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if (!dst_size)
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return 0;
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if (out_len)
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out_len = utf8_to_wchar(str, in_len,
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dst, out_len + 1, 0);
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dst[out_len] = 0;
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}
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return out_len;
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}
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size_t os_wcs_to_mbs(const wchar_t *str, size_t len, char *dst, size_t dst_size)
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{
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size_t out_len;
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if (!str)
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return 0;
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out_len = dst ? (dst_size - 1) : wcstombs(NULL, str, len);
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if (len && dst) {
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if (!dst_size)
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return 0;
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if (out_len)
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out_len = wcstombs(dst, str, out_len + 1);
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dst[out_len] = 0;
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}
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return out_len;
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}
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size_t os_wcs_to_utf8(const wchar_t *str, size_t len, char *dst,
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size_t dst_size)
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{
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size_t in_len;
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size_t out_len;
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if (!str)
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return 0;
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in_len = (len != 0) ? len : wcslen(str);
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out_len = dst ? (dst_size - 1) : wchar_to_utf8(str, in_len, NULL, 0, 0);
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if (out_len && dst) {
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if (!dst_size)
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return 0;
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if (out_len)
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out_len = wchar_to_utf8(str, in_len,
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dst, out_len + 1, 0);
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dst[out_len] = 0;
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}
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return out_len;
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}
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size_t os_mbs_to_wcs_ptr(const char *str, size_t len, wchar_t **pstr)
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{
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if (str) {
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size_t out_len = os_mbs_to_wcs(str, len, NULL, 0);
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*pstr = bmalloc((out_len + 1) * sizeof(wchar_t));
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return os_mbs_to_wcs(str, len, *pstr, out_len + 1);
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} else {
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*pstr = NULL;
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return 0;
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}
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}
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size_t os_utf8_to_wcs_ptr(const char *str, size_t len, wchar_t **pstr)
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{
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if (str) {
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size_t out_len = os_utf8_to_wcs(str, len, NULL, 0);
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*pstr = bmalloc((out_len + 1) * sizeof(wchar_t));
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return os_utf8_to_wcs(str, len, *pstr, out_len + 1);
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} else {
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*pstr = NULL;
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return 0;
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}
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}
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size_t os_wcs_to_mbs_ptr(const wchar_t *str, size_t len, char **pstr)
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{
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if (str) {
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size_t out_len = os_wcs_to_mbs(str, len, NULL, 0);
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*pstr = bmalloc((out_len + 1) * sizeof(char));
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return os_wcs_to_mbs(str, len, *pstr, out_len + 1);
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} else {
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*pstr = NULL;
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return 0;
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}
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}
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size_t os_wcs_to_utf8_ptr(const wchar_t *str, size_t len, char **pstr)
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{
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if (str) {
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size_t out_len = os_wcs_to_utf8(str, len, NULL, 0);
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*pstr = bmalloc((out_len + 1) * sizeof(char));
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return os_wcs_to_utf8(str, len, *pstr, out_len + 1);
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} else {
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*pstr = NULL;
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return 0;
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}
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}
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size_t os_utf8_to_mbs_ptr(const char *str, size_t len, char **pstr)
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{
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char *dst = NULL;
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size_t out_len = 0;
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if (str) {
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wchar_t *wstr = NULL;
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size_t wlen = os_utf8_to_wcs_ptr(str, len, &wstr);
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out_len = os_wcs_to_mbs_ptr(wstr, wlen, &dst);
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bfree(wstr);
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}
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*pstr = dst;
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return out_len;
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}
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size_t os_mbs_to_utf8_ptr(const char *str, size_t len, char **pstr)
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{
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char *dst = NULL;
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size_t out_len = 0;
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if (str) {
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wchar_t *wstr = NULL;
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size_t wlen = os_mbs_to_wcs_ptr(str, len, &wstr);
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out_len = os_wcs_to_utf8_ptr(wstr, wlen, &dst);
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bfree(wstr);
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}
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*pstr = dst;
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return out_len;
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}
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