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Annotation of 43BSD/usr.lib/lib2648/rawchar.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: static char sccsid[] = "@(#)rawchar.c  5.1 (Berkeley) 4/26/85";
        !             9: #endif not lint
        !            10: 
        !            11: /*
        !            12:  * get a character from the terminal, with no line buffering.
        !            13:  */
        !            14: 
        !            15: #include "2648.h"
        !            16: 
        !            17: rawchar()
        !            18: {
        !            19:        char c;
        !            20: 
        !            21:        sync();
        !            22:        escseq(NONE);
        !            23:        fflush(stdout);
        !            24:        if (_pb_front && _on2648) {
        !            25:                c = *_pb_front++;
        !            26: #ifdef TRACE
        !            27:                if (trace)
        !            28:                        fprintf(trace, "%s from queue, front=%d, back=%d\n", rdchar(c), _pb_front-_pushback, _pb_back-_pushback);
        !            29: #endif
        !            30:                if (_pb_front > _pb_back) {
        !            31:                        _pb_front = _pb_back = NULL;
        !            32: #ifdef TRACE
        !            33:                        if (trace)
        !            34:                                fprintf(trace, "reset pushback to null\n");
        !            35: #endif
        !            36:                }
        !            37:                return (c);
        !            38:        }
        !            39:        _outcount = 0;
        !            40:        c = getchar();
        !            41: #ifdef TRACE
        !            42:        if (trace)
        !            43:                fprintf(trace, "rawchar '%s'\n", rdchar(c));
        !            44: #endif
        !            45:        return (c);
        !            46: }

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