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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Copyright (C) 2013 by Marcin Bukat
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "plugin.h"
#include "stdio_compat.h"
#include "errno.h"
static _FILE_ __file__[MAX_STDIO_FILES] = {
{-1,-1,0},{-1,-1,0},{-1,-1,0},{-1,-1,0},
{-1,-1,0},{-1,-1,0},{-1,-1,0},{-1,-1,0},
{-1,-1,0},{-1,-1,0},{-1,-1,0}
};
_FILE_ *_stdout_ = NULL, *_stderr_ = NULL;
_FILE_ *_fopen_(const char *path, const char *mode)
{
_FILE_ *f = __file__;
int flags = O_RDONLY;
int fd = -1;
int i;
/* look for free slot */
for (i=0; i<MAX_STDIO_FILES; i++, f++)
if (f->fd == -1)
break;
/* no empty slots */
if (i == MAX_STDIO_FILES)
{
rb->splash(HZ, "no open slots");
return NULL;
}
if (*mode != 'r')
{
/* Not read */
flags = (O_WRONLY | O_CREAT | O_TRUNC);
if (*mode != 'w')
{
/* Not write (create of append) */
flags = (O_WRONLY | O_CREAT | O_APPEND);
if (*mode != 'a')
{
/* Illegal */
return NULL;
}
}
}
if (mode[1] == 'b')
{
/* Ignore */
mode++;
}
if (mode[1] == '+')
{
/* Read and Write. */
flags |= (O_RDONLY | O_WRONLY);
flags += (O_RDWR - (O_RDONLY | O_WRONLY));
}
fd = rb->open(path, flags, 0666);
if (fd < 0)
{
return NULL;
}
/* initialize */
f->fd = fd;
f->unget_char = -1;
return f;
}
int _fflush_(_FILE_ *stream)
{
(void)stream;
/* no buffering so we are always in sync */
return 0;
}
size_t _fread_(void *ptr, size_t size, size_t nmemb, _FILE_ *stream)
{
ssize_t ret = rb->read(stream->fd, (char *)ptr, size*nmemb);
if (ret < (ssize_t)(size*nmemb))
stream->error = -1;
return ret / size;
}
size_t _fwrite_(const void *ptr, size_t size, size_t nmemb, _FILE_ *stream)
{
if(stream)
{
ssize_t ret = rb->write(stream->fd, ptr, size*nmemb);
if (ret < (ssize_t)(size*nmemb))
stream->error = -1;
return ret / size;
}
/* stderr, stdout (disabled) */
else
{
return size * nmemb;
}
}
int _fseek_(_FILE_ *stream, long offset, int whence)
{
if(rb->lseek(stream->fd, offset, whence) >= 0)
return 0;
else
{
rb->splashf(HZ, "lseek() failed: %d fd:%d", errno, stream->fd);
return -1;
}
}
long _ftell_(_FILE_ *stream)
{
return rb->lseek(stream->fd, 0, SEEK_CUR);
}
int _fclose_(_FILE_ *stream)
{
if (stream->fd == -1)
return EOF;
if (rb->close(stream->fd) == -1)
return EOF;
/* free the resource */
stream->fd = -1;
return 0;
}
int _fgetc_(_FILE_ *stream)
{
unsigned char c;
if (stream->unget_char != -1)
{
c = stream->unget_char;
stream->unget_char = -1;
return c;
}
if ( rb->read(stream->fd, &c, 1) != 1)
return EOF;
return c;
}
int _ungetc_(int c, _FILE_ *stream)
{
stream->unget_char = c;
return c;
}
int _fputc_(int c, _FILE_ *stream)
{
unsigned char cb = c;
if (rb->write(stream->fd, &cb, 1) != 1)
return EOF;
return cb;
}
char *_fgets_(char *s, int size, _FILE_ *stream)
{
char *p = s;
char c = '\0';
for (int i=0; i<size; i++)
{
if ( rb->read(stream->fd, &c, 1) != 1)
break;
*p++ = c;
if (c == '\n')
break;
}
if (p == s)
return NULL;
*p = '\0';
return s;
}
void _clearerr_(_FILE_ *stream)
{
if (stream)
stream->error = 0;
}
int _ferror_(_FILE_ *stream)
{
return (stream) ? stream->error : -1;
}
int _feof_(_FILE_ *stream)
{
int c = _fgetc_(stream);
if (c != EOF)
{
_ungetc_(c, stream);
return 0;
}
return 0;
}
int _fprintf_(_FILE_ *stream, const char *format, ...)
{
int len;
va_list ap;
char buf[256];
va_start(ap, format);
len = rb->vsnprintf(buf, sizeof(buf), format, ap);
va_end(ap);
return _fwrite_(buf, 1, len, stream);
}
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