mirror of
https://github.com/libretro/RetroArch
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143 lines
4.0 KiB
C
143 lines
4.0 KiB
C
/* Copyright (C) 2010-2017 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.h).
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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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#ifndef __LIBRETRO_SDK_FILE_STREAM_H
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#define __LIBRETRO_SDK_FILE_STREAM_H
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <sys/types.h>
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#include <retro_common_api.h>
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#include <retro_inline.h>
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#include <boolean.h>
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#include <stdarg.h>
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RETRO_BEGIN_DECLS
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typedef struct RFILE RFILE;
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#define RFILE_HINT_NONE (0)
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/* There is no guarantee these requests will be attended. */
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#define RFILE_HINT_UNBUFFERED (1 << 8)
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/* requires RFILE_MODE_READ */
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#define RFILE_HINT_MMAP (1 << 9)
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enum
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{
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RFILE_MODE_READ = 0,
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RFILE_MODE_WRITE,
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RFILE_MODE_READ_WRITE
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};
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int64_t filestream_get_size(RFILE *stream);
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void filestream_set_size(RFILE *stream);
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const char *filestream_get_ext(RFILE *stream);
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/**
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* filestream_open:
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* @path : path to file
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* @mode : file mode to use when opening (read/write)
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* @bufsize : optional buffer size (-1 or 0 to use default)
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*
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* Opens a file for reading or writing, depending on the requested mode.
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* Returns a pointer to an RFILE if opened successfully, otherwise NULL.
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**/
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RFILE *filestream_open(const char *path, unsigned mode, unsigned hints);
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ssize_t filestream_seek(RFILE *stream, ssize_t offset, int whence);
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ssize_t filestream_read(RFILE *stream, void *data, size_t len);
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ssize_t filestream_write(RFILE *stream, const void *data, size_t len);
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ssize_t filestream_tell(RFILE *stream);
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void filestream_rewind(RFILE *stream);
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int filestream_close(RFILE *stream);
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int filestream_read_file(const char *path, void **buf, ssize_t *len);
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char *filestream_gets(RFILE *stream, char *s, size_t len);
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int filestream_getc(RFILE *stream);
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int filestream_eof(RFILE *stream);
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bool filestream_write_file(const char *path, const void *data, ssize_t size);
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int filestream_putc(RFILE *stream, int c);
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int filestream_vprintf(RFILE *stream, const char* format, va_list args);
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int filestream_printf(RFILE *stream, const char* format, ...);
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int filestream_error(RFILE *stream);
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int filestream_flush(RFILE *stream);
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static INLINE char *filestream_getline(RFILE *stream)
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{
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char* newline = (char*)malloc(9);
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char* newline_tmp = NULL;
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size_t cur_size = 8;
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size_t idx = 0;
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int in = filestream_getc(stream);
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if (!newline)
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return NULL;
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while (in != EOF && in != '\n')
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{
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if (idx == cur_size)
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{
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cur_size *= 2;
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newline_tmp = (char*)realloc(newline, cur_size + 1);
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if (!newline_tmp)
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{
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free(newline);
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return NULL;
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}
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newline = newline_tmp;
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}
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newline[idx++] = in;
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in = filestream_getc(stream);
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}
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newline[idx] = '\0';
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return newline;
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}
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RETRO_END_DECLS
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#endif
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