1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. 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 * %sccs.include.redist.c% 9 */ 10 11 #ifndef lint 12 static char sccsid[] = "@(#)wwgets.c 8.1 (Berkeley) 06/06/93"; 13 #endif /* not lint */ 14 15 #include "ww.h" 16 #include "char.h" 17 18 wwgets(buf, n, w) 19 char *buf; 20 int n; 21 register struct ww *w; 22 { 23 register char *p = buf; 24 register char c; 25 char uc = w->ww_unctrl; 26 static void rub(); 27 28 w->ww_unctrl = 0; 29 for (;;) { 30 wwcurtowin(w); 31 while ((c = wwgetc()) < 0) 32 wwiomux(); 33 #ifdef OLD_TTY 34 if (c == wwoldtty.ww_sgttyb.sg_erase) 35 #else 36 if (c == wwoldtty.ww_termios.c_cc[VERASE]) 37 #endif 38 { 39 if (p > buf) 40 rub(*--p, w); 41 } else 42 #ifdef OLD_TTY 43 if (c == wwoldtty.ww_sgttyb.sg_kill) 44 #else 45 if (c == wwoldtty.ww_termios.c_cc[VKILL]) 46 #endif 47 { 48 while (p > buf) 49 rub(*--p, w); 50 } else 51 #ifdef OLD_TTY 52 if (c == wwoldtty.ww_ltchars.t_werasc) 53 #else 54 if (c == wwoldtty.ww_termios.c_cc[VWERASE]) 55 #endif 56 { 57 while (--p >= buf && (*p == ' ' || *p == '\t')) 58 rub(*p, w); 59 while (p >= buf && *p != ' ' && *p != '\t') 60 rub(*p--, w); 61 p++; 62 } else if (c == '\r' || c == '\n') { 63 break; 64 } else { 65 if (p >= buf + n - 1) 66 wwputc(ctrl('g'), w); 67 else 68 wwputs(unctrl(*p++ = c), w); 69 } 70 } 71 *p = 0; 72 w->ww_unctrl = uc; 73 } 74 75 static void 76 rub(c, w) 77 struct ww *w; 78 { 79 register i; 80 81 for (i = strlen(unctrl(c)); --i >= 0;) 82 (void) wwwrite(w, "\b \b", 3); 83 } 84