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authorAutechre2021-09-17 18:06:12 +0200
committerGitHub2021-09-17 18:06:12 +0200
commit5a0ef7339e5eb875fc486c7459ee26b506eaf087 (patch)
tree8b6932a6eb0f786ea8e922701a0182396a80a7cc /libretro-common/streams
parentf53deef14f98c659fe9bbd7684656ee88977acbd (diff)
parent7d871ab87d45e535d1512a5834b627cbbce2e66c (diff)
downloadsnes9x2005-5a0ef7339e5eb875fc486c7459ee26b506eaf087.tar.gz
snes9x2005-5a0ef7339e5eb875fc486c7459ee26b506eaf087.tar.bz2
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Merge pull request #89 from jdgleaver/vfs-support
Replace direct direct file access with VFS routines
Diffstat (limited to 'libretro-common/streams')
-rw-r--r--libretro-common/streams/file_stream.c663
-rw-r--r--libretro-common/streams/file_stream_transforms.c159
2 files changed, 822 insertions, 0 deletions
diff --git a/libretro-common/streams/file_stream.c b/libretro-common/streams/file_stream.c
new file mode 100644
index 0000000..c434237
--- /dev/null
+++ b/libretro-common/streams/file_stream.c
@@ -0,0 +1,663 @@
+/* Copyright (C) 2010-2020 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (file_stream.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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <ctype.h>
+#include <errno.h>
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifdef _MSC_VER
+#include <compat/msvc.h>
+#endif
+
+#include <string/stdstring.h>
+#include <streams/file_stream.h>
+#define VFS_FRONTEND
+#include <vfs/vfs_implementation.h>
+
+#define VFS_ERROR_RETURN_VALUE -1
+
+struct RFILE
+{
+ struct retro_vfs_file_handle *hfile;
+ bool error_flag;
+ bool eof_flag;
+};
+
+static retro_vfs_get_path_t filestream_get_path_cb = NULL;
+static retro_vfs_open_t filestream_open_cb = NULL;
+static retro_vfs_close_t filestream_close_cb = NULL;
+static retro_vfs_size_t filestream_size_cb = NULL;
+static retro_vfs_truncate_t filestream_truncate_cb = NULL;
+static retro_vfs_tell_t filestream_tell_cb = NULL;
+static retro_vfs_seek_t filestream_seek_cb = NULL;
+static retro_vfs_read_t filestream_read_cb = NULL;
+static retro_vfs_write_t filestream_write_cb = NULL;
+static retro_vfs_flush_t filestream_flush_cb = NULL;
+static retro_vfs_remove_t filestream_remove_cb = NULL;
+static retro_vfs_rename_t filestream_rename_cb = NULL;
+
+/* VFS Initialization */
+
+void filestream_vfs_init(const struct retro_vfs_interface_info* vfs_info)
+{
+ const struct retro_vfs_interface *
+ vfs_iface = vfs_info->iface;
+
+ filestream_get_path_cb = NULL;
+ filestream_open_cb = NULL;
+ filestream_close_cb = NULL;
+ filestream_tell_cb = NULL;
+ filestream_size_cb = NULL;
+ filestream_truncate_cb = NULL;
+ filestream_seek_cb = NULL;
+ filestream_read_cb = NULL;
+ filestream_write_cb = NULL;
+ filestream_flush_cb = NULL;
+ filestream_remove_cb = NULL;
+ filestream_rename_cb = NULL;
+
+ if (
+ (vfs_info->required_interface_version <
+ FILESTREAM_REQUIRED_VFS_VERSION)
+ || !vfs_iface)
+ return;
+
+ filestream_get_path_cb = vfs_iface->get_path;
+ filestream_open_cb = vfs_iface->open;
+ filestream_close_cb = vfs_iface->close;
+ filestream_size_cb = vfs_iface->size;
+ filestream_truncate_cb = vfs_iface->truncate;
+ filestream_tell_cb = vfs_iface->tell;
+ filestream_seek_cb = vfs_iface->seek;
+ filestream_read_cb = vfs_iface->read;
+ filestream_write_cb = vfs_iface->write;
+ filestream_flush_cb = vfs_iface->flush;
+ filestream_remove_cb = vfs_iface->remove;
+ filestream_rename_cb = vfs_iface->rename;
+}
+
+/* Callback wrappers */
+bool filestream_exists(const char *path)
+{
+ RFILE *dummy = NULL;
+
+ if (!path || !*path)
+ return false;
+
+ dummy = filestream_open(
+ path,
+ RETRO_VFS_FILE_ACCESS_READ,
+ RETRO_VFS_FILE_ACCESS_HINT_NONE);
+
+ if (!dummy)
+ return false;
+
+ if (filestream_close(dummy) != 0)
+ if (dummy)
+ free(dummy);
+
+ dummy = NULL;
+ return true;
+}
+
+int64_t filestream_get_size(RFILE *stream)
+{
+ int64_t output;
+
+ if (filestream_size_cb)
+ output = filestream_size_cb(stream->hfile);
+ else
+ output = retro_vfs_file_size_impl(
+ (libretro_vfs_implementation_file*)stream->hfile);
+
+ if (output == VFS_ERROR_RETURN_VALUE)
+ stream->error_flag = true;
+
+ return output;
+}
+
+int64_t filestream_truncate(RFILE *stream, int64_t length)
+{
+ int64_t output;
+
+ if (filestream_truncate_cb)
+ output = filestream_truncate_cb(stream->hfile, length);
+ else
+ output = retro_vfs_file_truncate_impl(
+ (libretro_vfs_implementation_file*)stream->hfile, length);
+
+ if (output == VFS_ERROR_RETURN_VALUE)
+ stream->error_flag = true;
+
+ return output;
+}
+
+/**
+ * filestream_open:
+ * @path : path to file
+ * @mode : file mode to use when opening (read/write)
+ * @hints :
+ *
+ * Opens a file for reading or writing, depending on the requested mode.
+ * Returns a pointer to an RFILE if opened successfully, otherwise NULL.
+ **/
+RFILE* filestream_open(const char *path, unsigned mode, unsigned hints)
+{
+ struct retro_vfs_file_handle *fp = NULL;
+ RFILE* output = NULL;
+
+ if (filestream_open_cb)
+ fp = (struct retro_vfs_file_handle*)
+ filestream_open_cb(path, mode, hints);
+ else
+ fp = (struct retro_vfs_file_handle*)
+ retro_vfs_file_open_impl(path, mode, hints);
+
+ if (!fp)
+ return NULL;
+
+ output = (RFILE*)malloc(sizeof(RFILE));
+ output->error_flag = false;
+ output->eof_flag = false;
+ output->hfile = fp;
+ return output;
+}
+
+char* filestream_gets(RFILE *stream, char *s, size_t len)
+{
+ int c = 0;
+ char *p = s;
+ if (!stream)
+ return NULL;
+
+ /* get max bytes or up to a newline */
+
+ for (len--; len > 0; len--)
+ {
+ if ((c = filestream_getc(stream)) == EOF)
+ break;
+ *p++ = c;
+ if (c == '\n')
+ break;
+ }
+ *p = 0;
+
+ if (p == s && c == EOF)
+ return NULL;
+ return (s);
+}
+
+int filestream_getc(RFILE *stream)
+{
+ char c = 0;
+ if (stream && filestream_read(stream, &c, 1) == 1)
+ return (int)(unsigned char)c;
+ return EOF;
+}
+
+int filestream_scanf(RFILE *stream, const char* format, ...)
+{
+ char buf[4096];
+ char subfmt[64];
+ va_list args;
+ const char * bufiter = buf;
+ int ret = 0;
+ int64_t startpos = filestream_tell(stream);
+ int64_t maxlen = filestream_read(stream, buf, sizeof(buf)-1);
+
+ if (maxlen <= 0)
+ return EOF;
+
+ buf[maxlen] = '\0';
+
+ va_start(args, format);
+
+ while (*format)
+ {
+ if (*format == '%')
+ {
+ int sublen;
+ char* subfmtiter = subfmt;
+ bool asterisk = false;
+
+ *subfmtiter++ = *format++; /* '%' */
+
+ /* %[*][width][length]specifier */
+
+ if (*format == '*')
+ {
+ asterisk = true;
+ *subfmtiter++ = *format++;
+ }
+
+ while (ISDIGIT((unsigned char)*format))
+ *subfmtiter++ = *format++; /* width */
+
+ /* length */
+ if (*format == 'h' || *format == 'l')
+ {
+ if (format[1] == format[0])
+ *subfmtiter++ = *format++;
+ *subfmtiter++ = *format++;
+ }
+ else if (
+ *format == 'j' ||
+ *format == 'z' ||
+ *format == 't' ||
+ *format == 'L')
+ {
+ *subfmtiter++ = *format++;
+ }
+
+ /* specifier - always a single character (except ]) */
+ if (*format == '[')
+ {
+ while (*format != ']')
+ *subfmtiter++ = *format++;
+ *subfmtiter++ = *format++;
+ }
+ else
+ *subfmtiter++ = *format++;
+
+ *subfmtiter++ = '%';
+ *subfmtiter++ = 'n';
+ *subfmtiter++ = '\0';
+
+ if (sizeof(void*) != sizeof(long*))
+ abort(); /* all pointers must have the same size */
+
+ if (asterisk)
+ {
+ int v = sscanf(bufiter, subfmt, &sublen);
+ if (v == EOF)
+ return EOF;
+ if (v != 0)
+ break;
+ }
+ else
+ {
+ int v = sscanf(bufiter, subfmt, va_arg(args, void*), &sublen);
+ if (v == EOF)
+ return EOF;
+ if (v != 1)
+ break;
+ }
+
+ ret++;
+ bufiter += sublen;
+ }
+ else if (isspace((unsigned char)*format))
+ {
+ while (isspace((unsigned char)*bufiter))
+ bufiter++;
+ format++;
+ }
+ else
+ {
+ if (*bufiter != *format)
+ break;
+ bufiter++;
+ format++;
+ }
+ }
+
+ va_end(args);
+ filestream_seek(stream, startpos+(bufiter-buf),
+ RETRO_VFS_SEEK_POSITION_START);
+
+ return ret;
+}
+
+int64_t filestream_seek(RFILE *stream, int64_t offset, int seek_position)
+{
+ int64_t output;
+
+ if (filestream_seek_cb)
+ output = filestream_seek_cb(stream->hfile, offset, seek_position);
+ else
+ output = retro_vfs_file_seek_impl(
+ (libretro_vfs_implementation_file*)stream->hfile,
+ offset, seek_position);
+
+ if (output == VFS_ERROR_RETURN_VALUE)
+ stream->error_flag = true;
+
+ stream->eof_flag = false;
+
+ return output;
+}
+
+int filestream_eof(RFILE *stream)
+{
+ return stream->eof_flag;
+}
+
+int64_t filestream_tell(RFILE *stream)
+{
+ int64_t output;
+
+ if (filestream_size_cb)
+ output = filestream_tell_cb(stream->hfile);
+ else
+ output = retro_vfs_file_tell_impl(
+ (libretro_vfs_implementation_file*)stream->hfile);
+
+ if (output == VFS_ERROR_RETURN_VALUE)
+ stream->error_flag = true;
+
+ return output;
+}
+
+void filestream_rewind(RFILE *stream)
+{
+ if (!stream)
+ return;
+ filestream_seek(stream, 0L, RETRO_VFS_SEEK_POSITION_START);
+ stream->error_flag = false;
+ stream->eof_flag = false;
+}
+
+int64_t filestream_read(RFILE *stream, void *s, int64_t len)
+{
+ int64_t output;
+
+ if (filestream_read_cb)
+ output = filestream_read_cb(stream->hfile, s, len);
+ else
+ output = retro_vfs_file_read_impl(
+ (libretro_vfs_implementation_file*)stream->hfile, s, len);
+
+ if (output == VFS_ERROR_RETURN_VALUE)
+ stream->error_flag = true;
+ if (output < len)
+ stream->eof_flag = true;
+
+ return output;
+}
+
+int filestream_flush(RFILE *stream)
+{
+ int output;
+
+ if (filestream_flush_cb)
+ output = filestream_flush_cb(stream->hfile);
+ else
+ output = retro_vfs_file_flush_impl(
+ (libretro_vfs_implementation_file*)stream->hfile);
+
+ if (output == VFS_ERROR_RETURN_VALUE)
+ stream->error_flag = true;
+
+ return output;
+}
+
+int filestream_delete(const char *path)
+{
+ if (filestream_remove_cb)
+ return filestream_remove_cb(path);
+
+ return retro_vfs_file_remove_impl(path);
+}
+
+int filestream_rename(const char *old_path, const char *new_path)
+{
+ if (filestream_rename_cb)
+ return filestream_rename_cb(old_path, new_path);
+
+ return retro_vfs_file_rename_impl(old_path, new_path);
+}
+
+const char* filestream_get_path(RFILE *stream)
+{
+ if (filestream_get_path_cb)
+ return filestream_get_path_cb(stream->hfile);
+
+ return retro_vfs_file_get_path_impl(
+ (libretro_vfs_implementation_file*)stream->hfile);
+}
+
+int64_t filestream_write(RFILE *stream, const void *s, int64_t len)
+{
+ int64_t output;
+
+ if (filestream_write_cb)
+ output = filestream_write_cb(stream->hfile, s, len);
+ else
+ output = retro_vfs_file_write_impl(
+ (libretro_vfs_implementation_file*)stream->hfile, s, len);
+
+ if (output == VFS_ERROR_RETURN_VALUE)
+ stream->error_flag = true;
+
+ return output;
+}
+
+int filestream_putc(RFILE *stream, int c)
+{
+ char c_char = (char)c;
+ if (!stream)
+ return EOF;
+ return filestream_write(stream, &c_char, 1) == 1
+ ? (int)(unsigned char)c
+ : EOF;
+}
+
+int filestream_vprintf(RFILE *stream, const char* format, va_list args)
+{
+ static char buffer[8 * 1024];
+ int64_t num_chars = vsnprintf(buffer, sizeof(buffer),
+ format, args);
+
+ if (num_chars < 0)
+ return -1;
+ else if (num_chars == 0)
+ return 0;
+
+ return (int)filestream_write(stream, buffer, num_chars);
+}
+
+int filestream_printf(RFILE *stream, const char* format, ...)
+{
+ va_list vl;
+ int result;
+ va_start(vl, format);
+ result = filestream_vprintf(stream, format, vl);
+ va_end(vl);
+ return result;
+}
+
+int filestream_error(RFILE *stream)
+{
+ if (stream && stream->error_flag)
+ return 1;
+ return 0;
+}
+
+int filestream_close(RFILE *stream)
+{
+ int output;
+ struct retro_vfs_file_handle* fp = stream->hfile;
+
+ if (filestream_close_cb)
+ output = filestream_close_cb(fp);
+ else
+ output = retro_vfs_file_close_impl(
+ (libretro_vfs_implementation_file*)fp);
+
+ if (output == 0)
+ free(stream);
+
+ return output;
+}
+
+/**
+ * filestream_read_file:
+ * @path : path to file.
+ * @buf : buffer to allocate and read the contents of the
+ * file into. Needs to be freed manually.
+ * @len : optional output integer containing bytes read.
+ *
+ * Read the contents of a file into @buf.
+ *
+ * Returns: non zero on success.
+ */
+int64_t filestream_read_file(const char *path, void **buf, int64_t *len)
+{
+ int64_t ret = 0;
+ int64_t content_buf_size = 0;
+ void *content_buf = NULL;
+ RFILE *file = filestream_open(path,
+ RETRO_VFS_FILE_ACCESS_READ,
+ RETRO_VFS_FILE_ACCESS_HINT_NONE);
+
+ if (!file)
+ {
+ *buf = NULL;
+ return 0;
+ }
+
+ content_buf_size = filestream_get_size(file);
+
+ if (content_buf_size < 0)
+ goto error;
+
+ content_buf = malloc((size_t)(content_buf_size + 1));
+
+ if (!content_buf)
+ goto error;
+ if ((int64_t)(uint64_t)(content_buf_size + 1) != (content_buf_size + 1))
+ goto error;
+
+ ret = filestream_read(file, content_buf, (int64_t)content_buf_size);
+ if (ret < 0)
+ goto error;
+
+ if (filestream_close(file) != 0)
+ if (file)
+ free(file);
+
+ *buf = content_buf;
+
+ /* Allow for easy reading of strings to be safe.
+ * Will only work with sane character formatting (Unix). */
+ ((char*)content_buf)[ret] = '\0';
+
+ if (len)
+ *len = ret;
+
+ return 1;
+
+error:
+ if (file)
+ if (filestream_close(file) != 0)
+ free(file);
+ if (content_buf)
+ free(content_buf);
+ if (len)
+ *len = -1;
+ *buf = NULL;
+ return 0;
+}
+
+/**
+ * filestream_write_file:
+ * @path : path to file.
+ * @data : contents to write to the file.
+ * @size : size of the contents.
+ *
+ * Writes data to a file.
+ *
+ * Returns: true (1) on success, false (0) otherwise.
+ */
+bool filestream_write_file(const char *path, const void *data, int64_t size)
+{
+ int64_t ret = 0;
+ RFILE *file = filestream_open(path,
+ RETRO_VFS_FILE_ACCESS_WRITE,
+ RETRO_VFS_FILE_ACCESS_HINT_NONE);
+ if (!file)
+ return false;
+
+ ret = filestream_write(file, data, size);
+ if (filestream_close(file) != 0)
+ if (file)
+ free(file);
+
+ if (ret != size)
+ return false;
+
+ return true;
+}
+
+/* Returned pointer must be freed by the caller. */
+char* filestream_getline(RFILE *stream)
+{
+ char *newline_tmp = NULL;
+ size_t cur_size = 8;
+ size_t idx = 0;
+ int in = 0;
+ char *newline = (char*)malloc(9);
+
+ if (!stream || !newline)
+ {
+ if (newline)
+ free(newline);
+ return NULL;
+ }
+
+ in = filestream_getc(stream);
+
+ while (in != EOF && in != '\n')
+ {
+ if (idx == cur_size)
+ {
+ cur_size *= 2;
+ newline_tmp = (char*)realloc(newline, cur_size + 1);
+
+ if (!newline_tmp)
+ {
+ free(newline);
+ return NULL;
+ }
+
+ newline = newline_tmp;
+ }
+
+ newline[idx++] = in;
+ in = filestream_getc(stream);
+ }
+
+ newline[idx] = '\0';
+ return newline;
+}
+
+libretro_vfs_implementation_file* filestream_get_vfs_handle(RFILE *stream)
+{
+ return (libretro_vfs_implementation_file*)stream->hfile;
+}
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;
+}