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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcurses/base/lib_newwin.c	Lines:	0	122	0.0 %
Date:	2017-11-07	Branches:	0	84	0.0 %


/*	$OpenBSD: lib_newwin.c,v 1.6 2010/01/12 23:22:06 nicm Exp $	*/

/****************************************************************************
 * Copyright (c) 1998-2007,2008 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>                         *
 *     and: Thomas E. Dickey                        1996-on                 *
 ****************************************************************************/

/*
**	lib_newwin.c
**
**	The routines newwin(), subwin() and their dependent
**
*/

#include <curses.priv.h>
#include <stddef.h>

MODULE_ID("$Id: lib_newwin.c,v 1.6 2010/01/12 23:22:06 nicm Exp $")

#define window_is(name) ((sp)->_##name == win)

#if USE_REENTRANT
#define remove_window(name) \
		sp->_##name = 0
#else
#define remove_window(name) \
		sp->_##name = 0; \
		if (win == name) \
		    name = 0
#endif

static void
remove_window_from_screen(WINDOW *win)
{
    SCREEN *sp;

    for (each_screen(sp)) {
	if (window_is(curscr)) {
	    remove_window(curscr);
	    break;
	} else if (window_is(stdscr)) {
	    remove_window(stdscr);
	    break;
	} else if (window_is(newscr)) {
	    remove_window(newscr);
	    break;
	}
    }
}

NCURSES_EXPORT(int)
_nc_freewin(WINDOW *win)
{
    WINDOWLIST *p, *q;
    int i;
    int result = ERR;

    T((T_CALLED("_nc_freewin(%p)"), win));

    if (win != 0) {
	if (_nc_try_global(curses) == 0) {
	    q = 0;
	    for (each_window(p)) {
		if (&(p->win) == win) {
		    remove_window_from_screen(win);
		    if (q == 0)
			_nc_windows = p->next;
		    else
			q->next = p->next;

		    if (!(win->_flags & _SUBWIN)) {
			for (i = 0; i <= win->_maxy; i++)
			    FreeIfNeeded(win->_line[i].text);
		    }
		    free(win->_line);
		    free(p);

		    result = OK;
		    T(("...deleted win=%p", win));
		    break;
		}
		q = p;
	    }
	    _nc_unlock_global(curses);
	}
    }
    returnCode(result);
}

NCURSES_EXPORT(WINDOW *)
newwin(int num_lines, int num_columns, int begy, int begx)
{
    WINDOW *win;
    NCURSES_CH_T *ptr;
    int i;

    T((T_CALLED("newwin(%d,%d,%d,%d)"), num_lines, num_columns, begy, begx));

    if (begy < 0 || begx < 0 || num_lines < 0 || num_columns < 0)
	returnWin(0);

    if (num_lines == 0)
	num_lines = SP->_lines_avail - begy;
    if (num_columns == 0)
	num_columns = screen_columns - begx;

    if ((win = _nc_makenew(num_lines, num_columns, begy, begx, 0)) == 0)
	returnWin(0);

    for (i = 0; i < num_lines; i++) {
	win->_line[i].text = typeCalloc(NCURSES_CH_T, (unsigned) num_columns);
	if (win->_line[i].text == 0) {
	    (void) _nc_freewin(win);
	    returnWin(0);
	}
	for (ptr = win->_line[i].text;
	     ptr < win->_line[i].text + num_columns;
	     ptr++)
	    SetChar(*ptr, BLANK_TEXT, BLANK_ATTR);
    }

    returnWin(win);
}

NCURSES_EXPORT(WINDOW *)
derwin(WINDOW *orig, int num_lines, int num_columns, int begy, int begx)
{
    WINDOW *win;
    int i;
    int flags = _SUBWIN;

    T((T_CALLED("derwin(%p,%d,%d,%d,%d)"), orig, num_lines, num_columns,
       begy, begx));

    /*
     * make sure window fits inside the original one
     */
    if (begy < 0 || begx < 0 || orig == 0 || num_lines < 0 || num_columns < 0)
	returnWin(0);
    if (begy + num_lines > orig->_maxy + 1
	|| begx + num_columns > orig->_maxx + 1)
	returnWin(0);

    if (num_lines == 0)
	num_lines = orig->_maxy + 1 - begy;

    if (num_columns == 0)
	num_columns = orig->_maxx + 1 - begx;

    if (orig->_flags & _ISPAD)
	flags |= _ISPAD;

    if ((win = _nc_makenew(num_lines, num_columns, orig->_begy + begy,
			   orig->_begx + begx, flags)) == 0)
	returnWin(0);

    win->_pary = begy;
    win->_parx = begx;
    WINDOW_ATTRS(win) = WINDOW_ATTRS(orig);
    win->_nc_bkgd = orig->_nc_bkgd;

    for (i = 0; i < num_lines; i++)
	win->_line[i].text = &orig->_line[begy++].text[begx];

    win->_parent = orig;

    returnWin(win);
}

NCURSES_EXPORT(WINDOW *)
subwin(WINDOW *w, int l, int c, int y, int x)
{
    T((T_CALLED("subwin(%p, %d, %d, %d, %d)"), w, l, c, y, x));
    T(("parent has begy = %ld, begx = %ld", (long) w->_begy, (long) w->_begx));

    returnWin(derwin(w, l, c, y - w->_begy, x - w->_begx));
}

static bool
dimension_limit(int value)
{
    NCURSES_SIZE_T test = value;
    return (test == value && value > 0);
}

NCURSES_EXPORT(WINDOW *)
_nc_makenew(int num_lines, int num_columns, int begy, int begx, int flags)
{
    int i;
    WINDOWLIST *wp;
    WINDOW *win;
    bool is_pad = (flags & _ISPAD);

    T((T_CALLED("_nc_makenew(%d,%d,%d,%d)"), num_lines, num_columns, begy, begx));

    if (SP == 0)
	returnWin(0);

    if (!dimension_limit(num_lines) || !dimension_limit(num_columns))
	returnWin(0);

    if ((wp = typeCalloc(WINDOWLIST, 1)) == 0)
	returnWin(0);

    win = &(wp->win);

    if ((win->_line = typeCalloc(struct ldat, ((unsigned) num_lines))) == 0) {
	free(wp);
	returnWin(0);
    }

    _nc_lock_global(curses);

    win->_curx = 0;
    win->_cury = 0;
    win->_maxy = num_lines - 1;
    win->_maxx = num_columns - 1;
    win->_begy = begy;
    win->_begx = begx;
    win->_yoffset = SP->_topstolen;

    win->_flags = flags;
    WINDOW_ATTRS(win) = A_NORMAL;
    SetChar(win->_nc_bkgd, BLANK_TEXT, BLANK_ATTR);

    win->_clear = is_pad ? FALSE : (num_lines == screen_lines
				    && num_columns == screen_columns);
    win->_idlok = FALSE;
    win->_idcok = TRUE;
    win->_scroll = FALSE;
    win->_leaveok = FALSE;
    win->_use_keypad = FALSE;
    win->_delay = -1;
    win->_immed = FALSE;
    win->_sync = 0;
    win->_parx = -1;
    win->_pary = -1;
    win->_parent = 0;

    win->_regtop = 0;
    win->_regbottom = num_lines - 1;

    win->_pad._pad_y = -1;
    win->_pad._pad_x = -1;
    win->_pad._pad_top = -1;
    win->_pad._pad_bottom = -1;
    win->_pad._pad_left = -1;
    win->_pad._pad_right = -1;

    for (i = 0; i < num_lines; i++) {
	/*
	 * This used to do
	 *
	 * win->_line[i].firstchar = win->_line[i].lastchar = _NOCHANGE;
	 *
	 * which marks the whole window unchanged.  That's how
	 * SVr1 curses did it, but SVr4 curses marks the whole new
	 * window changed.
	 *
	 * With the old SVr1-like code, say you have stdscr full of
	 * characters, then create a new window with newwin(),
	 * then do a printw(win, "foo        ");, the trailing spaces are
	 * completely ignored by the following refreshes.  So, you
	 * get "foojunkjunk" on the screen instead of "foo        " as
	 * you actually intended.
	 *
	 * SVr4 doesn't do this.  Instead the spaces are actually written.
	 * So that's how we want ncurses to behave.
	 */
	win->_line[i].firstchar = 0;
	win->_line[i].lastchar = num_columns - 1;

	if_USE_SCROLL_HINTS(win->_line[i].oldindex = i);
    }

    if (!is_pad && (begx + num_columns == screen_columns)) {
	win->_flags |= _ENDLINE;

	if (begx == 0 && num_lines == screen_lines && begy == 0)
	    win->_flags |= _FULLWIN;

	if (begy + num_lines == screen_lines)
	    win->_flags |= _SCROLLWIN;
    }

    wp->next = _nc_windows;
    wp->screen = SP;
    _nc_windows = wp;

    T((T_CREATE("window %p"), win));

    _nc_unlock_global(curses);
    returnWin(win);
}

/*
 * wgetch() and other functions with a WINDOW* parameter may use a SCREEN*
 * internally, and it is useful to allow those to be invoked without switching
 * SCREEN's, e.g., for multi-threaded applications.
 */
NCURSES_EXPORT(SCREEN *)
_nc_screen_of(WINDOW *win)
{
    SCREEN *sp = 0;

    if (win != 0) {
	WINDOWLIST *wp = (WINDOWLIST *) win;
	sp = wp->screen;
    }
    return (sp);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: lib_newwin.c,v 1.6 2010/01/12 23:22:06 nicm Exp $ */
2
3			/****************************************************************************
4			* Copyright (c) 1998-2007,2008 Free Software Foundation, Inc. *
5			* *
6			* Permission is hereby granted, free of charge, to any person obtaining a *
7			* copy of this software and associated documentation files (the *
8			* "Software"), to deal in the Software without restriction, including *
9			* without limitation the rights to use, copy, modify, merge, publish, *
10			* distribute, distribute with modifications, sublicense, and/or sell *
11			* copies of the Software, and to permit persons to whom the Software is *
12			* furnished to do so, subject to the following conditions: *
13			* *
14			* The above copyright notice and this permission notice shall be included *
15			* in all copies or substantial portions of the Software. *
16			* *
17			* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
18			* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
19			* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
20			* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
21			* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
22			* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
23			* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
24			* *
25			* Except as contained in this notice, the name(s) of the above copyright *
26			* holders shall not be used in advertising or otherwise to promote the *
27			* sale, use or other dealings in this Software without prior written *
28			* authorization. *
29			****************************************************************************/
30
31			/****************************************************************************
32			* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
33			* and: Eric S. Raymond <esr@snark.thyrsus.com> *
34			* and: Thomas E. Dickey 1996-on *
35			****************************************************************************/
36
37			/*
38			** lib_newwin.c
39			**
40			** The routines newwin(), subwin() and their dependent
41			**
42			*/
43
44			#include <curses.priv.h>
45			#include <stddef.h>
46
47			MODULE_ID("$Id: lib_newwin.c,v 1.6 2010/01/12 23:22:06 nicm Exp $")
48
49			#define window_is(name) ((sp)->_##name == win)
50
51			#if USE_REENTRANT
52			#define remove_window(name) \
53			sp->_##name = 0
54			#else
55			#define remove_window(name) \
56			sp->_##name = 0; \
57			if (win == name) \
58			name = 0
59			#endif
60
61			static void
62			remove_window_from_screen(WINDOW *win)
63			{
64			SCREEN *sp;
65
66			for (each_screen(sp)) {
67			if (window_is(curscr)) {
68			remove_window(curscr);
69			break;
70			} else if (window_is(stdscr)) {
71			remove_window(stdscr);
72			break;
73			} else if (window_is(newscr)) {
74			remove_window(newscr);
75			break;
76			}
77			}
78			}
79
80			NCURSES_EXPORT(int)
81			_nc_freewin(WINDOW *win)
82			{
83			WINDOWLIST p, q;
84			int i;
85			int result = ERR;
86
87			T((T_CALLED("_nc_freewin(%p)"), win));
88
89			if (win != 0) {
90			if (_nc_try_global(curses) == 0) {
91			q = 0;
92			for (each_window(p)) {
93			if (&(p->win) == win) {
94			remove_window_from_screen(win);
95			if (q == 0)
96			_nc_windows = p->next;
97			else
98			q->next = p->next;
99
100			if (!(win->_flags & _SUBWIN)) {
101			for (i = 0; i <= win->_maxy; i++)
102			FreeIfNeeded(win->_line[i].text);
103			}
104			free(win->_line);
105			free(p);
106
107			result = OK;
108			T(("...deleted win=%p", win));
109			break;
110			}
111			q = p;
112			}
113			_nc_unlock_global(curses);
114			}
115			}
116			returnCode(result);
117			}
118
119			NCURSES_EXPORT(WINDOW *)
120			newwin(int num_lines, int num_columns, int begy, int begx)
121			{
122			WINDOW *win;
123			NCURSES_CH_T *ptr;
124			int i;
125
126			T((T_CALLED("newwin(%d,%d,%d,%d)"), num_lines, num_columns, begy, begx));
127
128			if (begy < 0 \|\| begx < 0 \|\| num_lines < 0 \|\| num_columns < 0)
129			returnWin(0);
130
131			if (num_lines == 0)
132			num_lines = SP->_lines_avail - begy;
133			if (num_columns == 0)
134			num_columns = screen_columns - begx;
135
136			if ((win = _nc_makenew(num_lines, num_columns, begy, begx, 0)) == 0)
137			returnWin(0);
138
139			for (i = 0; i < num_lines; i++) {
140			win->_line[i].text = typeCalloc(NCURSES_CH_T, (unsigned) num_columns);
141			if (win->_line[i].text == 0) {
142			(void) _nc_freewin(win);
143			returnWin(0);
144			}
145			for (ptr = win->_line[i].text;
146			ptr < win->_line[i].text + num_columns;
147			ptr++)
148			SetChar(*ptr, BLANK_TEXT, BLANK_ATTR);
149			}
150
151			returnWin(win);
152			}
153
154			NCURSES_EXPORT(WINDOW *)
155			derwin(WINDOW *orig, int num_lines, int num_columns, int begy, int begx)
156			{
157			WINDOW *win;
158			int i;
159			int flags = _SUBWIN;
160
161			T((T_CALLED("derwin(%p,%d,%d,%d,%d)"), orig, num_lines, num_columns,
162			begy, begx));
163
164			/*
165			* make sure window fits inside the original one
166			*/
167			if (begy < 0 \|\| begx < 0 \|\| orig == 0 \|\| num_lines < 0 \|\| num_columns < 0)
168			returnWin(0);
169			if (begy + num_lines > orig->_maxy + 1
170			\|\| begx + num_columns > orig->_maxx + 1)
171			returnWin(0);
172
173			if (num_lines == 0)
174			num_lines = orig->_maxy + 1 - begy;
175
176			if (num_columns == 0)
177			num_columns = orig->_maxx + 1 - begx;
178
179			if (orig->_flags & _ISPAD)
180			flags \|= _ISPAD;
181
182			if ((win = _nc_makenew(num_lines, num_columns, orig->_begy + begy,
183			orig->_begx + begx, flags)) == 0)
184			returnWin(0);
185
186			win->_pary = begy;
187			win->_parx = begx;
188			WINDOW_ATTRS(win) = WINDOW_ATTRS(orig);
189			win->_nc_bkgd = orig->_nc_bkgd;
190
191			for (i = 0; i < num_lines; i++)
192			win->_line[i].text = &orig->_line[begy++].text[begx];
193
194			win->_parent = orig;
195
196			returnWin(win);
197			}
198
199			NCURSES_EXPORT(WINDOW *)
200			subwin(WINDOW *w, int l, int c, int y, int x)
201			{
202			T((T_CALLED("subwin(%p, %d, %d, %d, %d)"), w, l, c, y, x));
203			T(("parent has begy = %ld, begx = %ld", (long) w->_begy, (long) w->_begx));
204
205			returnWin(derwin(w, l, c, y - w->_begy, x - w->_begx));
206			}
207
208			static bool
209			dimension_limit(int value)
210			{
211			NCURSES_SIZE_T test = value;
212			return (test == value && value > 0);
213			}
214
215			NCURSES_EXPORT(WINDOW *)
216			_nc_makenew(int num_lines, int num_columns, int begy, int begx, int flags)
217			{
218			int i;
219			WINDOWLIST *wp;
220			WINDOW *win;
221			bool is_pad = (flags & _ISPAD);
222
223			T((T_CALLED("_nc_makenew(%d,%d,%d,%d)"), num_lines, num_columns, begy, begx));
224
225			if (SP == 0)
226			returnWin(0);
227
228			if (!dimension_limit(num_lines) \|\| !dimension_limit(num_columns))
229			returnWin(0);
230
231			if ((wp = typeCalloc(WINDOWLIST, 1)) == 0)
232			returnWin(0);
233
234			win = &(wp->win);
235
236			if ((win->_line = typeCalloc(struct ldat, ((unsigned) num_lines))) == 0) {
237			free(wp);
238			returnWin(0);
239			}
240
241			_nc_lock_global(curses);
242
243			win->_curx = 0;
244			win->_cury = 0;
245			win->_maxy = num_lines - 1;
246			win->_maxx = num_columns - 1;
247			win->_begy = begy;
248			win->_begx = begx;
249			win->_yoffset = SP->_topstolen;
250
251			win->_flags = flags;
252			WINDOW_ATTRS(win) = A_NORMAL;
253			SetChar(win->_nc_bkgd, BLANK_TEXT, BLANK_ATTR);
254
255			win->_clear = is_pad ? FALSE : (num_lines == screen_lines
256			&& num_columns == screen_columns);
257			win->_idlok = FALSE;
258			win->_idcok = TRUE;
259			win->_scroll = FALSE;
260			win->_leaveok = FALSE;
261			win->_use_keypad = FALSE;
262			win->_delay = -1;
263			win->_immed = FALSE;
264			win->_sync = 0;
265			win->_parx = -1;
266			win->_pary = -1;
267			win->_parent = 0;
268
269			win->_regtop = 0;
270			win->_regbottom = num_lines - 1;
271
272			win->_pad._pad_y = -1;
273			win->_pad._pad_x = -1;
274			win->_pad._pad_top = -1;
275			win->_pad._pad_bottom = -1;
276			win->_pad._pad_left = -1;
277			win->_pad._pad_right = -1;
278
279			for (i = 0; i < num_lines; i++) {
280			/*
281			* This used to do
282			*
283			* win->_line[i].firstchar = win->_line[i].lastchar = _NOCHANGE;
284			*
285			* which marks the whole window unchanged. That's how
286			* SVr1 curses did it, but SVr4 curses marks the whole new
287			* window changed.
288			*
289			* With the old SVr1-like code, say you have stdscr full of
290			* characters, then create a new window with newwin(),
291			* then do a printw(win, "foo ");, the trailing spaces are
292			* completely ignored by the following refreshes. So, you
293			* get "foojunkjunk" on the screen instead of "foo " as
294			* you actually intended.
295			*
296			* SVr4 doesn't do this. Instead the spaces are actually written.
297			* So that's how we want ncurses to behave.
298			*/
299			win->_line[i].firstchar = 0;
300			win->_line[i].lastchar = num_columns - 1;
301
302			if_USE_SCROLL_HINTS(win->_line[i].oldindex = i);
303			}
304
305			if (!is_pad && (begx + num_columns == screen_columns)) {
306			win->_flags \|= _ENDLINE;
307
308			if (begx == 0 && num_lines == screen_lines && begy == 0)
309			win->_flags \|= _FULLWIN;
310
311			if (begy + num_lines == screen_lines)
312			win->_flags \|= _SCROLLWIN;
313			}
314
315			wp->next = _nc_windows;
316			wp->screen = SP;
317			_nc_windows = wp;
318
319			T((T_CREATE("window %p"), win));
320
321			_nc_unlock_global(curses);
322			returnWin(win);
323			}
324
325			/*
326			* wgetch() and other functions with a WINDOW* parameter may use a SCREEN*
327			* internally, and it is useful to allow those to be invoked without switching
328			* SCREEN's, e.g., for multi-threaded applications.
329			*/
330			NCURSES_EXPORT(SCREEN *)
331			_nc_screen_of(WINDOW *win)
332			{
333			SCREEN *sp = 0;
334
335			if (win != 0) {
336			WINDOWLIST wp = (WINDOWLIST ) win;
337			sp = wp->screen;
338			}
339			return (sp);
340			}