59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
/*
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* Copyright (c) 2011, 2012, 2013, 2014, 2015 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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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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fp->buffer[fp->amount_output_buffered++] = c;
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if ( fp->amount_output_buffered == BUFSIZ ||
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(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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