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Annotation of coherent/b/lib/libc/stdio/_fgetc.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * libc/stdio/_fgetc.c
        !             3:  * ANSI-compliant C standard i/o library internals.
        !             4:  * _fgetc(), _fgetca()
        !             5:  * Read character, unbuffered.
        !             6:  */
        !             7: 
        !             8: #include <stdio.h>
        !             9: #if    COHERENT || GEMDOS
        !            10: #include <errno.h>
        !            11: #endif
        !            12: 
        !            13: int
        !            14: _fgetc(fp) register FILE *fp;
        !            15: {
        !            16:        unsigned char c;
        !            17:        register int n;
        !            18: 
        !            19:        /* Special kludge: fflush stdout if line buffered. */
        !            20:        if ((stdout->_ff1 & _IOLBF) != 0)
        !            21:                fflush(stdout);
        !            22: 
        !            23:        if ((n = read(fileno(fp), &c, 1)) == 1)
        !            24:                return c;
        !            25:        else if (n == 0)
        !            26:                fp->_ff1 |= _FEOF;
        !            27:        else {
        !            28: #if    COHERENT || GEMDOS
        !            29:                if (errno == EINTR)
        !            30:                        errno = 0;
        !            31:                else
        !            32: #endif
        !            33:                fp->_ff1 |= _FERR;
        !            34:        }
        !            35:        return EOF;
        !            36: }
        !            37: 
        !            38: #if    _ASCII
        !            39: 
        !            40: /* ASCII: ignore '\r', map _EOFCHAR to EOF. */
        !            41: int
        !            42: _fgetca(fp) register FILE *fp;
        !            43: {
        !            44:        register int c;
        !            45: 
        !            46:        while ((c = _fgetc(fp)) == '\r')
        !            47:                ;
        !            48:        if (c == _EOFCHAR) {
        !            49:                fp->_ff |= _FEOF;
        !            50:                return EOF;
        !            51:        }
        !            52:        return c;
        !            53: }
        !            54: 
        !            55: #endif
        !            56: 
        !            57: /* end of libc/stdio/_fgetc.c */

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