mirror of
https://github.com/libretro/RetroArch
synced 2024-07-08 20:25:47 +00:00
196 lines
4.8 KiB
C
196 lines
4.8 KiB
C
/* Copyright (C) 2010-2020 The RetroArch team
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*
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* ---------------------------------------------------------------------------------------
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* The following license statement only applies to this file (file_stream_transforms.c).
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* ---------------------------------------------------------------------------------------
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*
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* Permission is hereby granted, free of charge,
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* to any person obtaining a copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <string.h>
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#include <stdarg.h>
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#include <libretro.h>
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#include <streams/file_stream.h>
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RFILE* rfopen(const char *path, const char *mode)
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{
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RFILE *output = NULL;
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unsigned int retro_mode = RETRO_VFS_FILE_ACCESS_READ;
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bool position_to_end = false;
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if (strstr(mode, "r"))
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{
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retro_mode = RETRO_VFS_FILE_ACCESS_READ;
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if (strstr(mode, "+"))
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{
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retro_mode = RETRO_VFS_FILE_ACCESS_READ_WRITE |
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RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING;
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}
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}
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else if (strstr(mode, "w"))
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{
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retro_mode = RETRO_VFS_FILE_ACCESS_WRITE;
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if (strstr(mode, "+"))
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retro_mode = RETRO_VFS_FILE_ACCESS_READ_WRITE;
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}
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else if (strstr(mode, "a"))
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{
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retro_mode = RETRO_VFS_FILE_ACCESS_WRITE |
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RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING;
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position_to_end = true;
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if (strstr(mode, "+"))
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{
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retro_mode = RETRO_VFS_FILE_ACCESS_READ_WRITE |
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RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING;
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}
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}
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output = filestream_open(path, retro_mode,
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RETRO_VFS_FILE_ACCESS_HINT_NONE);
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if (output && position_to_end)
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filestream_seek(output, 0, RETRO_VFS_SEEK_POSITION_END);
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return output;
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}
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int rfclose(RFILE* stream)
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{
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if (!stream)
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return EOF;
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return filestream_close(stream);
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}
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int64_t rftell(RFILE* stream)
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{
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if (!stream)
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return -1;
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return filestream_tell(stream);
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}
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int64_t rfseek(RFILE* stream, int64_t offset, int origin)
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{
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int seek_position = -1;
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if (!stream)
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return -1;
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switch (origin)
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{
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case SEEK_SET:
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seek_position = RETRO_VFS_SEEK_POSITION_START;
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break;
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case SEEK_CUR:
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seek_position = RETRO_VFS_SEEK_POSITION_CURRENT;
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break;
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case SEEK_END:
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seek_position = RETRO_VFS_SEEK_POSITION_END;
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break;
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}
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return filestream_seek(stream, offset, seek_position);
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}
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int64_t rfread(void* buffer,
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size_t elem_size, size_t elem_count, RFILE* stream)
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{
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if (!stream || (elem_size == 0) || (elem_count == 0))
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return 0;
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return (filestream_read(stream, buffer, elem_size * elem_count) / elem_size);
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}
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char *rfgets(char *buffer, int maxCount, RFILE* stream)
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{
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if (!stream)
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return NULL;
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return filestream_gets(stream, buffer, maxCount);
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}
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int rfgetc(RFILE* stream)
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{
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if (!stream)
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return EOF;
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return filestream_getc(stream);
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}
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int64_t rfwrite(void const* buffer,
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size_t elem_size, size_t elem_count, RFILE* stream)
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{
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if (!stream || (elem_size == 0) || (elem_count == 0))
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return 0;
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return (filestream_write(stream, buffer, elem_size * elem_count) / elem_size);
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}
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int rfputc(int character, RFILE * stream)
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{
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if (!stream)
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return EOF;
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return filestream_putc(stream, character);
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}
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int64_t rfflush(RFILE * stream)
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{
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if (!stream)
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return EOF;
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return filestream_flush(stream);
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}
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int rfprintf(RFILE * stream, const char * format, ...)
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{
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int result;
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va_list vl;
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if (!stream)
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return -1;
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va_start(vl, format);
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result = filestream_vprintf(stream, format, vl);
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va_end(vl);
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return result;
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}
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int rferror(RFILE* stream)
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{
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return filestream_error(stream);
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}
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int rfeof(RFILE* stream)
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{
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return filestream_eof(stream);
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}
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int rfscanf(RFILE * stream, const char * format, ...)
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{
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int result;
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va_list vl;
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if (!stream)
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return 0;
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va_start(vl, format);
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result = filestream_vscanf(stream, format, &vl);
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va_end(vl);
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return result;
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}
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