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Add ncurses 6.4
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Justine Tunney
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3071 changed files with 69379 additions and 1 deletions
227
third_party/ncurses/lib_getstr.c
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227
third_party/ncurses/lib_getstr.c
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/****************************************************************************
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* Copyright 2018-2020,2021 Thomas E. Dickey *
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* Copyright 1998-2011,2017 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
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* and: Eric S. Raymond <esr@snark.thyrsus.com> *
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****************************************************************************/
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/*
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** lib_getstr.c
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**
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** The routine wgetstr().
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**
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*/
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#define NEED_KEY_EVENT
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#include "curses.priv.h"
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MODULE_ID("$Id: lib_getstr.c,v 1.38 2021/10/23 19:02:39 tom Exp $")
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/*
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* This wipes out the last character, no matter whether it was a tab, control
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* or other character, and handles reverse wraparound.
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*/
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static char *
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WipeOut(WINDOW *win, int y, int x, char *first, char *last, int echoed)
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{
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if (last > first) {
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*--last = '\0';
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if (echoed) {
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int y1 = win->_cury;
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int x1 = win->_curx;
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wmove(win, y, x);
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waddstr(win, first);
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getyx(win, y, x);
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while (win->_cury < y1
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|| (win->_cury == y1 && win->_curx < x1))
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waddch(win, (chtype) ' ');
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wmove(win, y, x);
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}
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}
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return last;
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}
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NCURSES_EXPORT(int)
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wgetnstr_events(WINDOW *win,
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char *str,
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int maxlen,
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EVENTLIST_1st(_nc_eventlist * evl))
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{
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SCREEN *sp = _nc_screen_of(win);
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TTY buf;
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bool oldnl, oldecho, oldraw, oldcbreak;
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char erasec;
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char killc;
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char *oldstr;
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int ch;
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int y, x;
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T((T_CALLED("wgetnstr(%p,%p,%d)"), (void *) win, (void *) str, maxlen));
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if (!win || !str)
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returnCode(ERR);
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maxlen = _nc_getstr_limit(maxlen);
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NCURSES_SP_NAME(_nc_get_tty_mode) (NCURSES_SP_ARGx &buf);
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oldnl = sp->_nl;
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oldecho = sp->_echo;
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oldraw = sp->_raw;
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oldcbreak = sp->_cbreak;
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NCURSES_SP_NAME(nl) (NCURSES_SP_ARG);
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NCURSES_SP_NAME(noecho) (NCURSES_SP_ARG);
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NCURSES_SP_NAME(raw) (NCURSES_SP_ARG);
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erasec = NCURSES_SP_NAME(erasechar) (NCURSES_SP_ARG);
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killc = NCURSES_SP_NAME(killchar) (NCURSES_SP_ARG);
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oldstr = str;
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getyx(win, y, x);
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if (is_wintouched(win) || (win->_flags & _HASMOVED))
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wrefresh(win);
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while ((ch = wgetch_events(win, evl)) != ERR) {
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/*
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* Some terminals (the Wyse-50 is the most common) generate
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* a \n from the down-arrow key. With this logic, it is the
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* user's choice whether to set kcud=\n for wgetch();
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* terminating *getstr() with \n should work either way.
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*/
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if (ch == '\n'
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|| ch == '\r'
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|| ch == KEY_DOWN
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|| ch == KEY_ENTER) {
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if (oldecho == TRUE
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&& win->_cury == win->_maxy
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&& win->_scroll)
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wechochar(win, (chtype) '\n');
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break;
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}
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#ifdef KEY_EVENT
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if (ch == KEY_EVENT)
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break;
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#endif
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#ifdef KEY_RESIZE
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if (ch == KEY_RESIZE)
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break;
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#endif
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if (ch == erasec || ch == KEY_LEFT || ch == KEY_BACKSPACE) {
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if (str > oldstr) {
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str = WipeOut(win, y, x, oldstr, str, oldecho);
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}
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} else if (ch == killc) {
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while (str > oldstr) {
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str = WipeOut(win, y, x, oldstr, str, oldecho);
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}
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} else if (ch >= KEY_MIN
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|| (str - oldstr >= maxlen)) {
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NCURSES_SP_NAME(beep) (NCURSES_SP_ARG);
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} else {
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*str++ = (char) ch;
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if (oldecho == TRUE) {
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int oldy = win->_cury;
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if (waddch(win, (chtype) ch) == ERR) {
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/*
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* We can't really use the lower-right
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* corner for input, since it'll mess
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* up bookkeeping for erases.
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*/
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win->_flags &= ~_WRAPPED;
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waddch(win, (chtype) ' ');
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str = WipeOut(win, y, x, oldstr, str, oldecho);
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continue;
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} else if (IS_WRAPPED(win)) {
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/*
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* If the last waddch forced a wrap &
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* scroll, adjust our reference point
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* for erasures.
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*/
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if (win->_scroll
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&& oldy == win->_maxy
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&& win->_cury == win->_maxy) {
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if (--y <= 0) {
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y = 0;
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}
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}
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win->_flags &= ~_WRAPPED;
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}
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wrefresh(win);
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}
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}
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}
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win->_curx = 0;
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win->_flags &= ~_WRAPPED;
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if (win->_cury < win->_maxy)
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win->_cury++;
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wrefresh(win);
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/* Restore with a single I/O call, to fix minor asymmetry between
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* raw/noraw, etc.
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*/
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sp->_nl = oldnl;
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sp->_echo = oldecho;
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sp->_raw = oldraw;
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sp->_cbreak = oldcbreak;
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NCURSES_SP_NAME(_nc_set_tty_mode) (NCURSES_SP_ARGx &buf);
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*str = '\0';
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if (ch == ERR)
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returnCode(ch);
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T(("wgetnstr returns %s", _nc_visbuf(oldstr)));
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#ifdef KEY_EVENT
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if (ch == KEY_EVENT)
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returnCode(ch);
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#endif
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#ifdef KEY_RESIZE
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if (ch == KEY_RESIZE)
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returnCode(ch);
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#endif
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returnCode(OK);
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}
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#ifdef NCURSES_WGETCH_EVENTS
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NCURSES_EXPORT(int)
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wgetnstr(WINDOW *win, char *str, int maxlen)
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{
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returnCode(wgetnstr_events(win,
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str,
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maxlen,
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EVENTLIST_1st((_nc_eventlist *) 0)));
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}
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#endif
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