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Annotation of 43BSDTahoe/ucb/window/wwgets.c, revision 1.1.1.1

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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