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sortix--sortix/libc/fputc.cpp
Jonas 'Sortie' Termansen 9ad7690c74 Rewrite stdio functions.
These changes aim to make the stdio functions much more stable, flexible,
correct and bugfree.
2013-12-17 14:30:26 +01:00

52 lines
1.6 KiB
C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
fputc.cpp
Writes a character to a FILE.
*******************************************************************************/
#include <stdio.h>
extern "C" int fputc(int c, FILE* fp)
{
if ( fp->flags & _FILE_NO_BUFFER )
{
unsigned char c_char = c;
if ( fwrite(&c_char, sizeof(c_char), 1, fp) != 1 )
return EOF;
return c;
}
if ( !fp->write_func )
return EOF; // TODO: ferror doesn't report error!
if ( fp->flags & _FILE_LAST_READ )
fflush_stop_reading(fp);
fp->flags |= _FILE_LAST_WRITE;
if ( fp->amount_output_buffered == fp->buffersize && fflush(fp) != 0 )
return EOF;
fp->buffer[fp->amount_output_buffered++] = c;
if ( c == '\n' && fflush(fp) != 0 )
return EOF;
return c;
}