| /**************************************************************************** |
| * Copyright (c) 1998-2006,2008 Free Software Foundation, Inc. * |
| * * |
| * Permission is hereby granted, free of charge, to any person obtaining a * |
| * copy of this software and associated documentation files (the * |
| * "Software"), to deal in the Software without restriction, including * |
| * without limitation the rights to use, copy, modify, merge, publish, * |
| * distribute, distribute with modifications, sublicense, and/or sell * |
| * copies of the Software, and to permit persons to whom the Software is * |
| * furnished to do so, subject to the following conditions: * |
| * * |
| * The above copyright notice and this permission notice shall be included * |
| * in all copies or substantial portions of the Software. * |
| * * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * |
| * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * |
| * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * |
| * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * |
| * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * |
| * * |
| * Except as contained in this notice, the name(s) of the above copyright * |
| * holders shall not be used in advertising or otherwise to promote the * |
| * sale, use or other dealings in this Software without prior written * |
| * authorization. * |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * |
| * and: Eric S. Raymond <esr@snark.thyrsus.com> * |
| ****************************************************************************/ |
| |
| /* |
| ** lib_getstr.c |
| ** |
| ** The routine wgetstr(). |
| ** |
| */ |
| |
| #include <curses.priv.h> |
| #include <term.h> |
| |
| MODULE_ID("$Id: lib_getstr.c,v 1.27 2008/08/16 19:20:04 tom Exp $") |
| |
| /* |
| * This wipes out the last character, no matter whether it was a tab, control |
| * or other character, and handles reverse wraparound. |
| */ |
| static char * |
| WipeOut(WINDOW *win, int y, int x, char *first, char *last, bool echoed) |
| { |
| if (last > first) { |
| *--last = '\0'; |
| if (echoed) { |
| int y1 = win->_cury; |
| int x1 = win->_curx; |
| |
| wmove(win, y, x); |
| waddstr(win, first); |
| getyx(win, y, x); |
| while (win->_cury < y1 |
| || (win->_cury == y1 && win->_curx < x1)) |
| waddch(win, (chtype) ' '); |
| |
| wmove(win, y, x); |
| } |
| } |
| return last; |
| } |
| |
| NCURSES_EXPORT(int) |
| wgetnstr_events(WINDOW *win, |
| char *str, |
| int maxlen, |
| EVENTLIST_1st(_nc_eventlist * evl)) |
| { |
| SCREEN *sp = _nc_screen_of(win); |
| TTY buf; |
| bool oldnl, oldecho, oldraw, oldcbreak; |
| char erasec; |
| char killc; |
| char *oldstr; |
| int ch; |
| int y, x; |
| |
| T((T_CALLED("wgetnstr(%p,%p, %d)"), win, str, maxlen)); |
| |
| if (!win) |
| returnCode(ERR); |
| |
| _nc_get_tty_mode(&buf); |
| |
| oldnl = sp->_nl; |
| oldecho = sp->_echo; |
| oldraw = sp->_raw; |
| oldcbreak = sp->_cbreak; |
| nl(); |
| noecho(); |
| noraw(); |
| cbreak(); |
| |
| erasec = erasechar(); |
| killc = killchar(); |
| |
| oldstr = str; |
| getyx(win, y, x); |
| |
| if (is_wintouched(win) || (win->_flags & _HASMOVED)) |
| wrefresh(win); |
| |
| while ((ch = wgetch_events(win, evl)) != ERR) { |
| /* |
| * Some terminals (the Wyse-50 is the most common) generate |
| * a \n from the down-arrow key. With this logic, it's the |
| * user's choice whether to set kcud=\n for wgetch(); |
| * terminating *getstr() with \n should work either way. |
| */ |
| if (ch == '\n' |
| || ch == '\r' |
| || ch == KEY_DOWN |
| || ch == KEY_ENTER) { |
| if (oldecho == TRUE |
| && win->_cury == win->_maxy |
| && win->_scroll) |
| wechochar(win, (chtype) '\n'); |
| break; |
| } |
| #ifdef KEY_EVENT |
| if (ch == KEY_EVENT) |
| break; |
| #endif |
| #ifdef KEY_RESIZE |
| if (ch == KEY_RESIZE) |
| break; |
| #endif |
| if (ch == erasec || ch == KEY_LEFT || ch == KEY_BACKSPACE) { |
| if (str > oldstr) { |
| str = WipeOut(win, y, x, oldstr, str, oldecho); |
| } |
| } else if (ch == killc) { |
| while (str > oldstr) { |
| str = WipeOut(win, y, x, oldstr, str, oldecho); |
| } |
| } else if (ch >= KEY_MIN |
| || (maxlen >= 0 && str - oldstr >= maxlen)) { |
| beep(); |
| } else { |
| *str++ = (char) ch; |
| if (oldecho == TRUE) { |
| int oldy = win->_cury; |
| if (waddch(win, (chtype) ch) == ERR) { |
| /* |
| * We can't really use the lower-right |
| * corner for input, since it'll mess |
| * up bookkeeping for erases. |
| */ |
| win->_flags &= ~_WRAPPED; |
| waddch(win, (chtype) ' '); |
| str = WipeOut(win, y, x, oldstr, str, oldecho); |
| continue; |
| } else if (win->_flags & _WRAPPED) { |
| /* |
| * If the last waddch forced a wrap & |
| * scroll, adjust our reference point |
| * for erasures. |
| */ |
| if (win->_scroll |
| && oldy == win->_maxy |
| && win->_cury == win->_maxy) { |
| if (--y <= 0) { |
| y = 0; |
| } |
| } |
| win->_flags &= ~_WRAPPED; |
| } |
| wrefresh(win); |
| } |
| } |
| } |
| |
| win->_curx = 0; |
| win->_flags &= ~_WRAPPED; |
| if (win->_cury < win->_maxy) |
| win->_cury++; |
| wrefresh(win); |
| |
| /* Restore with a single I/O call, to fix minor asymmetry between |
| * raw/noraw, etc. |
| */ |
| sp->_nl = oldnl; |
| sp->_echo = oldecho; |
| sp->_raw = oldraw; |
| sp->_cbreak = oldcbreak; |
| |
| _nc_set_tty_mode(&buf); |
| |
| *str = '\0'; |
| if (ch == ERR) |
| returnCode(ch); |
| |
| T(("wgetnstr returns %s", _nc_visbuf(oldstr))); |
| |
| #ifdef KEY_EVENT |
| if (ch == KEY_EVENT) |
| returnCode(ch); |
| #endif |
| #ifdef KEY_RESIZE |
| if (ch == KEY_RESIZE) |
| returnCode(ch); |
| #endif |
| |
| returnCode(OK); |
| } |
| |
| #ifdef NCURSES_WGETCH_EVENTS |
| NCURSES_EXPORT(int) |
| wgetnstr(WINDOW *win, char *str, int maxlen) |
| { |
| returnCode(wgetnstr_events(win, |
| str, |
| maxlen, |
| EVENTLIST_1st((_nc_eventlist *) 0))); |
| } |
| #endif |
