8c048e6086
On NAO, one of the major complaints was accidental escaping from wishing prompt when using cursor keys. The users were trying to go "back" on the entry to fix a typo, but lost the wish instead. This prevents escaping out of a text prompt if there is any text entered into the prompt; pressing escape clears the prompt.
284 lines
6.8 KiB
C
284 lines
6.8 KiB
C
/* NetHack 3.5 getline.c $NHDT-Date$ $NHDT-Branch$:$NHDT-Revision$ */
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/* NetHack 3.5 getline.c $Date: 2011/12/11 01:54:56 $ $Revision: 1.18 $ */
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/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
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/* NetHack may be freely redistributed. See license for details. */
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#include "hack.h"
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#ifdef TTY_GRAPHICS
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#if !defined(MAC)
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#define NEWAUTOCOMP
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#endif
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#include "wintty.h"
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#include "func_tab.h"
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char morc = 0; /* tell the outside world what char you chose */
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STATIC_DCL boolean FDECL(ext_cmd_getlin_hook, (char *));
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typedef boolean FDECL((*getlin_hook_proc), (char *));
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STATIC_DCL void FDECL(hooked_tty_getlin, (const char*,char*,getlin_hook_proc));
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extern int NDECL(extcmd_via_menu); /* cmd.c */
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extern char erase_char, kill_char; /* from appropriate tty.c file */
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/*
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* Read a line closed with '\n' into the array char bufp[BUFSZ].
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* (The '\n' is not stored. The string is closed with a '\0'.)
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* Reading can be interrupted by an escape ('\033') - now the
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* resulting string is "\033".
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*/
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void
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tty_getlin(query, bufp)
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const char *query;
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register char *bufp;
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{
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hooked_tty_getlin(query, bufp, (getlin_hook_proc) 0);
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}
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STATIC_OVL void
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hooked_tty_getlin(query, bufp, hook)
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const char *query;
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register char *bufp;
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getlin_hook_proc hook;
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{
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register char *obufp = bufp;
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register int c;
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struct WinDesc *cw = wins[WIN_MESSAGE];
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boolean doprev = 0;
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if(ttyDisplay->toplin == 1 && !(cw->flags & WIN_STOP)) more();
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cw->flags &= ~WIN_STOP;
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ttyDisplay->toplin = 3; /* special prompt state */
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ttyDisplay->inread++;
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pline("%s ", query);
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*obufp = 0;
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for(;;) {
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(void) fflush(stdout);
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Strcat(strcat(strcpy(toplines, query), " "), obufp);
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c = pgetchar();
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if (c == '\033' || c == EOF) {
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if (c == '\033' && obufp[0] != '\0') {
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obufp[0] = '\0';
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bufp = obufp;
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tty_clear_nhwindow(WIN_MESSAGE);
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cw->maxcol = cw->maxrow;
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addtopl(query);
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addtopl(" ");
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addtopl(obufp);
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} else {
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obufp[0] = '\033';
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obufp[1] = '\0';
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break;
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}
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}
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if (ttyDisplay->intr) {
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ttyDisplay->intr--;
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*bufp = 0;
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}
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if(c == '\020') { /* ctrl-P */
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if (iflags.prevmsg_window != 's') {
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int sav = ttyDisplay->inread;
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ttyDisplay->inread = 0;
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(void) tty_doprev_message();
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ttyDisplay->inread = sav;
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tty_clear_nhwindow(WIN_MESSAGE);
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cw->maxcol = cw->maxrow;
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addtopl(query);
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addtopl(" ");
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*bufp = 0;
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addtopl(obufp);
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} else {
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if (!doprev)
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(void) tty_doprev_message();/* need two initially */
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(void) tty_doprev_message();
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doprev = 1;
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continue;
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}
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} else if (doprev && iflags.prevmsg_window == 's') {
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tty_clear_nhwindow(WIN_MESSAGE);
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cw->maxcol = cw->maxrow;
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doprev = 0;
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addtopl(query);
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addtopl(" ");
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*bufp = 0;
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addtopl(obufp);
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}
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if(c == erase_char || c == '\b') {
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if(bufp != obufp) {
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#ifdef NEWAUTOCOMP
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char *i;
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#endif /* NEWAUTOCOMP */
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bufp--;
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#ifndef NEWAUTOCOMP
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putsyms("\b \b");/* putsym converts \b */
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#else /* NEWAUTOCOMP */
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putsyms("\b");
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for (i = bufp; *i; ++i) putsyms(" ");
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for (; i > bufp; --i) putsyms("\b");
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*bufp = 0;
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#endif /* NEWAUTOCOMP */
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} else tty_nhbell();
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#if defined(apollo)
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} else if(c == '\n' || c == '\r') {
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#else
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} else if(c == '\n') {
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#endif
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#ifndef NEWAUTOCOMP
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*bufp = 0;
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#endif /* not NEWAUTOCOMP */
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break;
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} else if(' ' <= (unsigned char) c && c != '\177' &&
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(bufp-obufp < BUFSZ-1 && bufp-obufp < COLNO)) {
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/* avoid isprint() - some people don't have it
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' ' is not always a printing char */
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#ifdef NEWAUTOCOMP
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char *i = eos(bufp);
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#endif /* NEWAUTOCOMP */
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*bufp = c;
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bufp[1] = 0;
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putsyms(bufp);
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bufp++;
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if (hook && (*hook)(obufp)) {
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putsyms(bufp);
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#ifndef NEWAUTOCOMP
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bufp = eos(bufp);
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#else /* NEWAUTOCOMP */
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/* pointer and cursor left where they were */
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for (i = bufp; *i; ++i) putsyms("\b");
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} else if (i > bufp) {
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char *s = i;
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/* erase rest of prior guess */
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for (; i > bufp; --i) putsyms(" ");
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for (; s > bufp; --s) putsyms("\b");
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#endif /* NEWAUTOCOMP */
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}
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} else if(c == kill_char || c == '\177') { /* Robert Viduya */
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/* this test last - @ might be the kill_char */
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#ifndef NEWAUTOCOMP
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while(bufp != obufp) {
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bufp--;
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putsyms("\b \b");
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}
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#else /* NEWAUTOCOMP */
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for (; *bufp; ++bufp) putsyms(" ");
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for (; bufp != obufp; --bufp) putsyms("\b \b");
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*bufp = 0;
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#endif /* NEWAUTOCOMP */
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} else
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tty_nhbell();
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}
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ttyDisplay->toplin = 2; /* nonempty, no --More-- required */
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ttyDisplay->inread--;
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clear_nhwindow(WIN_MESSAGE); /* clean up after ourselves */
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}
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void
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xwaitforspace(s)
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register const char *s; /* chars allowed besides return */
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{
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register int c, x = ttyDisplay ? (int) ttyDisplay->dismiss_more : '\n';
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morc = 0;
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while (
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#ifdef HANGUPHANDLING
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!program_state.done_hup &&
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#endif
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(c = tty_nhgetch()) != EOF) {
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if (c == '\n') break;
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if(iflags.cbreak) {
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if (c == '\033') {
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if (ttyDisplay) ttyDisplay->dismiss_more = 1;
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morc = '\033';
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break;
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}
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if ((s && index(s,c)) || c == x) {
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morc = (char) c;
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break;
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}
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tty_nhbell();
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}
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}
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}
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/*
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* Implement extended command completion by using this hook into
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* tty_getlin. Check the characters already typed, if they uniquely
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* identify an extended command, expand the string to the whole
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* command.
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*
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* Return TRUE if we've extended the string at base. Otherwise return FALSE.
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* Assumptions:
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*
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* + we don't change the characters that are already in base
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* + base has enough room to hold our string
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*/
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STATIC_OVL boolean
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ext_cmd_getlin_hook(base)
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char *base;
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{
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int oindex, com_index;
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com_index = -1;
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for (oindex = 0; extcmdlist[oindex].ef_txt != (char *)0; oindex++) {
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if (!strncmpi(base, extcmdlist[oindex].ef_txt, strlen(base))) {
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if (com_index == -1) /* no matches yet */
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com_index = oindex;
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else /* more than 1 match */
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return FALSE;
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}
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}
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if (com_index >= 0) {
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Strcpy(base, extcmdlist[com_index].ef_txt);
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return TRUE;
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}
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return FALSE; /* didn't match anything */
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}
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/*
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* Read in an extended command, doing command line completion. We
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* stop when we have found enough characters to make a unique command.
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*/
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int
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tty_get_ext_cmd()
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{
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int i;
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char buf[BUFSZ];
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if (iflags.extmenu) return extcmd_via_menu();
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/* maybe a runtime option? */
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/* hooked_tty_getlin("#", buf, flags.cmd_comp ? ext_cmd_getlin_hook : (getlin_hook_proc) 0); */
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hooked_tty_getlin("#", buf, in_doagain ? (getlin_hook_proc)0
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: ext_cmd_getlin_hook);
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(void) mungspaces(buf);
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if (buf[0] == 0 || buf[0] == '\033') return -1;
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for (i = 0; extcmdlist[i].ef_txt != (char *)0; i++)
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if (!strcmpi(buf, extcmdlist[i].ef_txt)) break;
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if (!in_doagain) {
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int j;
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for (j = 0; buf[j]; j++)
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savech(buf[j]);
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savech('\n');
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}
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if (extcmdlist[i].ef_txt == (char *)0) {
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pline("%s: unknown extended command.", buf);
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i = -1;
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}
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return i;
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}
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#endif /* TTY_GRAPHICS */
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/*getline.c*/
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