blob: 4aa58ea2a19c9caa51f9eb29ff7b49361c457d0c [file] [log] [blame]
/****************************************************************************
* 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 *
****************************************************************************/
#include <curses.priv.h>
MODULE_ID("$Id: lib_screen.c,v 1.31 2008/08/16 19:05:37 tom Exp $")
#define MAX_SIZE 0x3fff /* 16k is big enough for a window or pad */
NCURSES_EXPORT(WINDOW *)
getwin(FILE *filep)
{
WINDOW tmp, *nwin;
int n;
T((T_CALLED("getwin(%p)"), filep));
clearerr(filep);
(void) fread(&tmp, sizeof(WINDOW), 1, filep);
if (ferror(filep)
|| tmp._maxy == 0
|| tmp._maxy > MAX_SIZE
|| tmp._maxx == 0
|| tmp._maxx > MAX_SIZE)
returnWin(0);
if (tmp._flags & _ISPAD) {
nwin = newpad(tmp._maxy + 1, tmp._maxx + 1);
} else {
nwin = newwin(tmp._maxy + 1, tmp._maxx + 1, 0, 0);
}
/*
* We deliberately do not restore the _parx, _pary, or _parent
* fields, because the window hierarchy within which they
* made sense is probably gone.
*/
if (nwin != 0) {
nwin->_curx = tmp._curx;
nwin->_cury = tmp._cury;
nwin->_maxy = tmp._maxy;
nwin->_maxx = tmp._maxx;
nwin->_begy = tmp._begy;
nwin->_begx = tmp._begx;
nwin->_yoffset = tmp._yoffset;
nwin->_flags = tmp._flags & ~(_SUBWIN);
WINDOW_ATTRS(nwin) = WINDOW_ATTRS(&tmp);
nwin->_nc_bkgd = tmp._nc_bkgd;
nwin->_notimeout = tmp._notimeout;
nwin->_clear = tmp._clear;
nwin->_leaveok = tmp._leaveok;
nwin->_idlok = tmp._idlok;
nwin->_idcok = tmp._idcok;
nwin->_immed = tmp._immed;
nwin->_scroll = tmp._scroll;
nwin->_sync = tmp._sync;
nwin->_use_keypad = tmp._use_keypad;
nwin->_delay = tmp._delay;
nwin->_regtop = tmp._regtop;
nwin->_regbottom = tmp._regbottom;
if (tmp._flags & _ISPAD)
nwin->_pad = tmp._pad;
for (n = 0; n <= nwin->_maxy; n++) {
clearerr(filep);
(void) fread(nwin->_line[n].text,
sizeof(NCURSES_CH_T),
(size_t) (nwin->_maxx + 1),
filep);
if (ferror(filep)) {
delwin(nwin);
returnWin(0);
}
}
touchwin(nwin);
}
returnWin(nwin);
}
NCURSES_EXPORT(int)
putwin(WINDOW *win, FILE *filep)
{
int code = ERR;
int n;
T((T_CALLED("putwin(%p,%p)"), win, filep));
if (win != 0) {
size_t len = (size_t) (win->_maxx + 1);
clearerr(filep);
if (fwrite(win, sizeof(WINDOW), 1, filep) != 1
|| ferror(filep))
returnCode(code);
for (n = 0; n <= win->_maxy; n++) {
if (fwrite(win->_line[n].text,
sizeof(NCURSES_CH_T), len, filep) != len
|| ferror(filep)) {
returnCode(code);
}
}
code = OK;
}
returnCode(code);
}
NCURSES_EXPORT(int)
scr_restore(const char *file)
{
FILE *fp = 0;
T((T_CALLED("scr_restore(%s)"), _nc_visbuf(file)));
if (_nc_access(file, R_OK) < 0
|| (fp = fopen(file, "rb")) == 0) {
returnCode(ERR);
} else {
delwin(newscr);
SP->_newscr = getwin(fp);
#if !USE_REENTRANT
newscr = SP->_newscr;
#endif
(void) fclose(fp);
returnCode(OK);
}
}
NCURSES_EXPORT(int)
scr_dump(const char *file)
{
FILE *fp = 0;
T((T_CALLED("scr_dump(%s)"), _nc_visbuf(file)));
if (_nc_access(file, W_OK) < 0
|| (fp = fopen(file, "wb")) == 0) {
returnCode(ERR);
} else {
(void) putwin(newscr, fp);
(void) fclose(fp);
returnCode(OK);
}
}
NCURSES_EXPORT(int)
scr_init(const char *file)
{
FILE *fp = 0;
T((T_CALLED("scr_init(%s)"), _nc_visbuf(file)));
if (exit_ca_mode && non_rev_rmcup)
returnCode(ERR);
if (_nc_access(file, R_OK) < 0
|| (fp = fopen(file, "rb")) == 0) {
returnCode(ERR);
} else {
delwin(curscr);
SP->_curscr = getwin(fp);
#if !USE_REENTRANT
curscr = SP->_curscr;
#endif
(void) fclose(fp);
returnCode(OK);
}
}
NCURSES_EXPORT(int)
scr_set(const char *file)
{
T((T_CALLED("scr_set(%s)"), _nc_visbuf(file)));
if (scr_init(file) == ERR) {
returnCode(ERR);
} else {
delwin(newscr);
SP->_newscr = dupwin(curscr);
#if !USE_REENTRANT
newscr = SP->_newscr;
#endif
returnCode(OK);
}
}