54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/* fputc( int, FILE * )
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This file is part of the Public Domain C Library (PDCLib).
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Permission is granted to use, modify, and / or redistribute at will.
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*/
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#include <stdio.h>
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#ifndef REGTEST
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#include "_PDCLIB_io.h"
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/* Write the value c (cast to unsigned char) to the given stream.
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Returns c if successful, EOF otherwise.
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If a write error occurs, the error indicator of the stream is set.
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*/
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int _PDCLIB_fputc_unlocked( int c, FILE * stream )
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{
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if ( _PDCLIB_prepwrite( stream ) == EOF )
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{
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return EOF;
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}
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stream->buffer[stream->bufidx++] = (char)c;
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if ( ( stream->bufidx == stream->bufsize ) /* _IOFBF */
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|| ( ( stream->status & _IOLBF ) && ( (char)c == '\n' ) ) /* _IOLBF */
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|| ( stream->status & _IONBF ) /* _IONBF */
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)
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{
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/* buffer filled, unbuffered stream, or end-of-line. */
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return ( _PDCLIB_flushbuffer( stream ) == 0 ) ? c : EOF;
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}
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return c;
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}
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int fputc( int c, FILE * stream )
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{
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_PDCLIB_flockfile( stream );
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int r = _PDCLIB_fputc_unlocked( c, stream );
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_PDCLIB_funlockfile( stream );
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return r;
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}
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#endif
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#ifdef TEST
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#include "_PDCLIB_test.h"
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int main( void )
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{
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/* Testing covered by ftell.c */
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return TEST_RESULTS;
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}
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#endif
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