diff options
Diffstat (limited to 'libretro-common/streams/file_stream_transforms.c')
-rw-r--r-- | libretro-common/streams/file_stream_transforms.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/libretro-common/streams/file_stream_transforms.c b/libretro-common/streams/file_stream_transforms.c new file mode 100644 index 0000000..099b27b --- /dev/null +++ b/libretro-common/streams/file_stream_transforms.c @@ -0,0 +1,159 @@ +/* Copyright (C) 2010-2020 The RetroArch team +* +* --------------------------------------------------------------------------------------- +* The following license statement only applies to this file (file_stream_transforms.c). +* --------------------------------------------------------------------------------------- +* +* Permission is hereby granted, free of charge, +* to any person obtaining a copy of this software and associated documentation files (the "Software"), +* to deal in the Software without restriction, including without limitation the rights to +* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, +* and to permit persons to whom the Software is furnished to do so, subject to the following conditions: +* +* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, +* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, +* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#include <string.h> +#include <stdarg.h> + +#include <libretro.h> +#include <streams/file_stream.h> + +RFILE* rfopen(const char *path, const char *mode) +{ + RFILE *output = NULL; + unsigned int retro_mode = RETRO_VFS_FILE_ACCESS_READ; + bool position_to_end = false; + + if (strstr(mode, "r")) + { + retro_mode = RETRO_VFS_FILE_ACCESS_READ; + if (strstr(mode, "+")) + { + retro_mode = RETRO_VFS_FILE_ACCESS_READ_WRITE | + RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING; + } + } + else if (strstr(mode, "w")) + { + retro_mode = RETRO_VFS_FILE_ACCESS_WRITE; + if (strstr(mode, "+")) + retro_mode = RETRO_VFS_FILE_ACCESS_READ_WRITE; + } + else if (strstr(mode, "a")) + { + retro_mode = RETRO_VFS_FILE_ACCESS_WRITE | + RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING; + position_to_end = true; + if (strstr(mode, "+")) + { + retro_mode = RETRO_VFS_FILE_ACCESS_READ_WRITE | + RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING; + } + } + + output = filestream_open(path, retro_mode, + RETRO_VFS_FILE_ACCESS_HINT_NONE); + if (output && position_to_end) + filestream_seek(output, 0, RETRO_VFS_SEEK_POSITION_END); + + return output; +} + +int rfclose(RFILE* stream) +{ + return filestream_close(stream); +} + +int64_t rftell(RFILE* stream) +{ + return filestream_tell(stream); +} + +int64_t rfseek(RFILE* stream, int64_t offset, int origin) +{ + int seek_position = -1; + switch (origin) + { + case SEEK_SET: + seek_position = RETRO_VFS_SEEK_POSITION_START; + break; + case SEEK_CUR: + seek_position = RETRO_VFS_SEEK_POSITION_CURRENT; + break; + case SEEK_END: + seek_position = RETRO_VFS_SEEK_POSITION_END; + break; + } + + return filestream_seek(stream, offset, seek_position); +} + +int64_t rfread(void* buffer, + size_t elem_size, size_t elem_count, RFILE* stream) +{ + return (filestream_read(stream, buffer, elem_size * elem_count) / elem_size); +} + +char *rfgets(char *buffer, int maxCount, RFILE* stream) +{ + return filestream_gets(stream, buffer, maxCount); +} + +int rfgetc(RFILE* stream) +{ + return filestream_getc(stream); +} + +int64_t rfwrite(void const* buffer, + size_t elem_size, size_t elem_count, RFILE* stream) +{ + return filestream_write(stream, buffer, elem_size * elem_count); +} + +int rfputc(int character, RFILE * stream) +{ + return filestream_putc(stream, character); +} + +int64_t rfflush(RFILE * stream) +{ + return filestream_flush(stream); +} + +int rfprintf(RFILE * stream, const char * format, ...) +{ + int result; + va_list vl; + va_start(vl, format); + result = filestream_vprintf(stream, format, vl); + va_end(vl); + return result; +} + +int rferror(RFILE* stream) +{ + return filestream_error(stream); +} + +int rfeof(RFILE* stream) +{ + return filestream_eof(stream); +} + +int rfscanf(RFILE * stream, const char * format, ...) +{ + int result; + va_list vl; + va_start(vl, format); + result = filestream_scanf(stream, format, vl); + va_end(vl); + return result; +} |