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

1.1     ! root        1: /*
        !             2:  * libc/stdio/_stropen.c
        !             3:  * ANSI-compliant C standard i/o library internals.
        !             4:  * _stropen()
        !             5:  * Open string stream.
        !             6:  * Called by sprintf(), sscanf(), vsprintf().
        !             7:  */
        !             8: 
        !             9: #include <stdio.h>
        !            10: #include <limits.h>
        !            11: #include "stdio.int.h"
        !            12: 
        !            13: extern int     _fputstr();
        !            14: 
        !            15: /* length is -1 for output to string, strlen(string) for input from string. */
        !            16: FILE *
        !            17: _stropen(string, length, fp) char *string; int length; register FILE *fp;
        !            18: {
        !            19:        register _FILE2 *f2p;
        !            20: 
        !            21:        f2p = fp->_f2p;
        !            22:        f2p->_bp = fp->_cp = string;
        !            23:        f2p->_dp = f2p->_ep = f2p->_nm = NULL;
        !            24:        fp->_mode = _MODE_STR;
        !            25:        fp->_ff1 = fp->_ff2 = fp->_fd = f2p->_uc = 0;
        !            26:        if (length < 0) {
        !            27:                fp->_ff1 |= _FWONLY;
        !            28:                fp->_cc = INT_MAX;
        !            29:                f2p->_pt = &_fputstr;
        !            30:                f2p->_gt = &_fgete;
        !            31:        } else {
        !            32:                fp->_ff1 |= _FRONLY;
        !            33:                fp->_cc = length;
        !            34:                f2p->_pt = &_fpute;
        !            35:                f2p->_gt = &_fgetstr;
        !            36:        }
        !            37:        return fp;
        !            38: }
        !            39: 
        !            40: /*
        !            41:  * _fputstr() is static;
        !            42:  * _fgetstr() (in _fgetstr.c) is not, because it must be visible to ungetc().
        !            43:  */
        !            44: static
        !            45: int
        !            46: _fputstr(c, fp) int c; register FILE *fp;
        !            47: {
        !            48:        return (*fp->_cp++ = (unsigned char)c);
        !            49: }
        !            50: 
        !            51: /* end of libc/stdio/_stropen.c */

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