GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcurses/base/lib_getstr.c Lines: 0 85 0.0 %
Date: 2017-11-13 Branches: 0 72 0.0 %

Line Branch Exec Source
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/* $OpenBSD: lib_getstr.c,v 1.3 2010/01/12 23:22:05 nicm Exp $ */
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/****************************************************************************
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 * Copyright (c) 1998-2006,2008 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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#include <curses.priv.h>
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#include <term.h>
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MODULE_ID("$Id: lib_getstr.c,v 1.3 2010/01/12 23:22:05 nicm 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, bool 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)"), win, str, maxlen));
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    if (!win)
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	returnCode(ERR);
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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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    nl();
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    noecho();
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    noraw();
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    cbreak();
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    erasec = erasechar();
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    killc = killchar();
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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's 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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		   || (maxlen >= 0 && str - oldstr >= maxlen)) {
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	    beep();
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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 (win->_flags & _WRAPPED) {
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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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    _nc_set_tty_mode(&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