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Annotation of 43BSDTahoe/ucb/window/wwgets.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  */
        !            17: 
        !            18: #ifndef lint
        !            19: static char sccsid[] = "@(#)wwgets.c   3.12 (Berkeley) 6/29/88";
        !            20: #endif /* not lint */
        !            21: 
        !            22: #include "ww.h"
        !            23: #include "char.h"
        !            24: 
        !            25: wwgets(buf, n, w)
        !            26: char *buf;
        !            27: int n;
        !            28: register struct ww *w;
        !            29: {
        !            30:        register char *p = buf;
        !            31:        register char c;
        !            32:        char uc = w->ww_unctrl;
        !            33: 
        !            34:        w->ww_unctrl = 0;
        !            35:        for (;;) {
        !            36:                wwcurtowin(w);
        !            37:                while ((c = wwgetc()) < 0)
        !            38:                        wwiomux();
        !            39:                if (c == wwoldtty.ww_sgttyb.sg_erase) {
        !            40:                        if (p > buf)
        !            41:                                rub(*--p, w);
        !            42:                } else if (c == wwoldtty.ww_sgttyb.sg_kill) {
        !            43:                        while (p > buf)
        !            44:                                rub(*--p, w);
        !            45:                } else if (c == wwoldtty.ww_ltchars.t_werasc) {
        !            46:                        while (--p >= buf && (*p == ' ' || *p == '\t'))
        !            47:                                rub(*p, w);
        !            48:                        while (p >= buf && *p != ' ' && *p != '\t')
        !            49:                                rub(*p--, w);
        !            50:                        p++;
        !            51:                } else if (c == '\r' || c == '\n') {
        !            52:                        break;
        !            53:                } else {
        !            54:                        if (p >= buf + n - 1)
        !            55:                                wwputc(ctrl('g'), w);
        !            56:                        else
        !            57:                                wwputs(unctrl(*p++ = c), w);
        !            58:                }
        !            59:        }
        !            60:        *p = 0;
        !            61:        w->ww_unctrl = uc;
        !            62: }
        !            63: 
        !            64: static
        !            65: rub(c, w)
        !            66: struct ww *w;
        !            67: {
        !            68:        register i;
        !            69: 
        !            70:        for (i = strlen(unctrl(c)); --i >= 0;)
        !            71:                (void) wwwrite(w, "\b \b", 3);
        !            72: }

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