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Add ncurses 6.4
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Justine Tunney
parent
6ee5580adc
commit
0ed7309fdb
3071 changed files with 69379 additions and 1 deletions
233
third_party/ncurses/lib_get_wstr.c
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233
third_party/ncurses/lib_get_wstr.c
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/****************************************************************************
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* Copyright 2018-2020,2021 Thomas E. Dickey *
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* Copyright 2002-2009,2011 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: Thomas E. Dickey *
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****************************************************************************/
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/*
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** lib_get_wstr.c
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**
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** The routine wgetn_wstr().
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**
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*/
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#include "curses.priv.h"
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MODULE_ID("$Id: lib_get_wstr.c,v 1.20 2021/10/23 19:02:59 tom Exp $")
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static int
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wadd_wint(WINDOW *win, wint_t *src)
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{
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cchar_t tmp;
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wchar_t wch[2];
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wch[0] = (wchar_t) (*src);
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wch[1] = 0;
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setcchar(&tmp, wch, A_NORMAL, (short) 0, NULL);
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return wadd_wch(win, &tmp);
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}
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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 wint_t *
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WipeOut(WINDOW *win, int y, int x, wint_t *first, wint_t *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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int n;
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wmove(win, y, x);
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for (n = 0; first[n] != 0; ++n) {
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wadd_wint(win, first + n);
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}
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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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wgetn_wstr(WINDOW *win, wint_t *str, int maxlen)
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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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wchar_t erasec = 0;
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wchar_t killc = 0;
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wint_t *oldstr = str;
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wint_t *tmpstr = str;
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wint_t ch;
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int y, x, code;
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T((T_CALLED("wgetn_wstr(%p,%p, %d)"), (void *) win, (void *) str, maxlen));
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if (!win)
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returnCode(ERR);
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maxlen = _nc_getstr_limit(maxlen);
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_nc_get_tty_mode(&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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NCURSES_SP_NAME(erasewchar) (NCURSES_SP_ARGx &erasec);
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NCURSES_SP_NAME(killwchar) (NCURSES_SP_ARGx &killc);
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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 ((code = wget_wch(win, &ch)) != ERR) {
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/*
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* Map special characters into key-codes.
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*/
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if (ch == '\r')
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ch = '\n';
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if (ch == '\n') {
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code = KEY_CODE_YES;
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ch = KEY_ENTER;
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}
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if (ch != 0 && ch < KEY_MIN) {
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if (ch == (wint_t) erasec) {
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ch = KEY_BACKSPACE;
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code = KEY_CODE_YES;
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}
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if (ch == (wint_t) killc) {
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ch = KEY_EOL;
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code = KEY_CODE_YES;
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}
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}
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if (code == KEY_CODE_YES) {
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/*
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* Some terminals (the Wyse-50 is the most common) generate a \n
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* from the down-arrow key. With this logic, it is the user's
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* choice whether to set kcud=\n for wget_wch(); terminating
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* *getn_wstr() with \n should work either way.
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*/
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if (ch == KEY_DOWN || 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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if (ch == KEY_LEFT || ch == KEY_BACKSPACE) {
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if (tmpstr > oldstr) {
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tmpstr = WipeOut(win, y, x, oldstr, tmpstr, oldecho);
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}
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} else if (ch == KEY_EOL) {
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while (tmpstr > oldstr) {
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tmpstr = WipeOut(win, y, x, oldstr, tmpstr, oldecho);
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}
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} else {
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beep();
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}
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} else if (tmpstr - oldstr >= maxlen) {
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beep();
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} else {
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*tmpstr++ = ch;
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*tmpstr = 0;
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if (oldecho == TRUE) {
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int oldy = win->_cury;
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if (wadd_wint(win, tmpstr - 1) == ERR) {
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/*
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* We can't really use the lower-right corner for input,
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* since it'll mess 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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tmpstr = WipeOut(win, y, x, oldstr, tmpstr, 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 & scroll, adjust our
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* reference point 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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(void) _nc_set_tty_mode(&buf);
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*tmpstr = 0;
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if (code == ERR) {
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if (tmpstr == oldstr) {
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*tmpstr++ = WEOF;
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*tmpstr = 0;
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}
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returnCode(ERR);
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}
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T(("wgetn_wstr returns %s", _nc_viswibuf(oldstr)));
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returnCode(OK);
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}
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