69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2013, 2014, 2015.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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stdio/fputc_unlocked.c
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Writes a character to a FILE.
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*******************************************************************************/
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#include <errno.h>
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#include <stdio.h>
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int fputc_unlocked(int c, FILE* fp)
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{
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if ( !(fp->flags & _FILE_WRITABLE) )
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return errno = EBADF, fp->flags |= _FILE_STATUS_ERROR, EOF;
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if ( !(fp->flags & _FILE_BUFFER_MODE_SET) )
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setvbuf_unlocked(fp, NULL, fp->buffer_mode, 0);
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if ( fp->buffer_mode == _IONBF )
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{
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unsigned char c_char = c;
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if ( fwrite_unlocked(&c_char, sizeof(c_char), 1, fp) != 1 )
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return EOF;
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return c;
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}
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if ( !fp->write_func )
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return errno = EBADF, fp->flags |= _FILE_STATUS_ERROR, EOF;
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if ( fp->flags & _FILE_LAST_READ )
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fflush_stop_reading_unlocked(fp);
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fp->flags |= _FILE_LAST_WRITE;
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fp->flags &= ~_FILE_STATUS_EOF;
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if ( fp->amount_output_buffered == BUFSIZ )
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{
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if ( fflush_unlocked(fp) == EOF )
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return EOF;
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}
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fp->buffer[fp->amount_output_buffered++] = c;
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if ( fp->buffer_mode == _IOLBF && c == '\n' )
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{
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if ( fflush_unlocked(fp) == EOF )
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return EOF;
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}
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return c;
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}
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