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Annotation of 43BSDReno/usr.bin/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:  * This code is derived from software contributed to Berkeley by
                      6:  * Edward Wang at The University of California, Berkeley.
                      7:  *
                      8:  * Redistribution and use in source and binary forms are permitted provided
                      9:  * that: (1) source distributions retain this entire copyright notice and
                     10:  * comment, and (2) distributions including binaries display the following
                     11:  * acknowledgement:  ``This product includes software developed by the
                     12:  * University of California, Berkeley and its contributors'' in the
                     13:  * documentation or other materials provided with the distribution and in
                     14:  * all advertising materials mentioning features or use of this software.
                     15:  * Neither the name of the University nor the names of its contributors may
                     16:  * be used to endorse or promote products derived from this software without
                     17:  * specific prior written permission.
                     18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     19:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     20:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     21:  */
                     22: 
                     23: #ifndef lint
                     24: static char sccsid[] = "@(#)wwgets.c   3.15 (Berkeley) 6/6/90";
                     25: #endif /* not lint */
                     26: 
                     27: #include "ww.h"
                     28: #include "char.h"
                     29: 
                     30: wwgets(buf, n, w)
                     31: char *buf;
                     32: int n;
                     33: register struct ww *w;
                     34: {
                     35:        register char *p = buf;
                     36:        register char c;
                     37:        char uc = w->ww_unctrl;
                     38: 
                     39:        w->ww_unctrl = 0;
                     40:        for (;;) {
                     41:                wwcurtowin(w);
                     42:                while ((c = wwgetc()) < 0)
                     43:                        wwiomux();
                     44: #ifndef POSIX_TTY
                     45:                if (c == wwoldtty.ww_sgttyb.sg_erase)
                     46: #else
                     47:                if (c == wwoldtty.ww_termios.c_cc[VERASE])
                     48: #endif
                     49:                {
                     50:                        if (p > buf)
                     51:                                rub(*--p, w);
                     52:                } else
                     53: #ifndef POSIX_TTY
                     54:                if (c == wwoldtty.ww_sgttyb.sg_kill)
                     55: #else
                     56:                if (c == wwoldtty.ww_termios.c_cc[VKILL])
                     57: #endif
                     58:                {
                     59:                        while (p > buf)
                     60:                                rub(*--p, w);
                     61:                } else
                     62: #ifndef POSIX_TTY
                     63:                if (c == wwoldtty.ww_ltchars.t_werasc)
                     64: #else
                     65:                if (c == wwoldtty.ww_termios.c_cc[VWERASE])
                     66: #endif
                     67:                {
                     68:                        while (--p >= buf && (*p == ' ' || *p == '\t'))
                     69:                                rub(*p, w);
                     70:                        while (p >= buf && *p != ' ' && *p != '\t')
                     71:                                rub(*p--, w);
                     72:                        p++;
                     73:                } else if (c == '\r' || c == '\n') {
                     74:                        break;
                     75:                } else {
                     76:                        if (p >= buf + n - 1)
                     77:                                wwputc(ctrl('g'), w);
                     78:                        else
                     79:                                wwputs(unctrl(*p++ = c), w);
                     80:                }
                     81:        }
                     82:        *p = 0;
                     83:        w->ww_unctrl = uc;
                     84: }
                     85: 
                     86: static
                     87: rub(c, w)
                     88: struct ww *w;
                     89: {
                     90:        register i;
                     91: 
                     92:        for (i = strlen(unctrl(c)); --i >= 0;)
                     93:                (void) wwwrite(w, "\b \b", 3);
                     94: }

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