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/* $OpenBSD: lib_screen.c,v 1.4 1998/01/17 16:27:36 millert Exp $ */
/***************************************************************************
* COPYRIGHT NOTICE *
****************************************************************************
* ncurses is copyright (C) 1992-1995 *
* Zeyd M. Ben-Halim *
* zmbenhal@netcom.com *
* Eric S. Raymond *
* esr@snark.thyrsus.com *
* *
* Permission is hereby granted to reproduce and distribute ncurses *
* by any means and for any fee, whether alone or as part of a *
* larger distribution, in source or in binary form, PROVIDED *
* this notice is included with any such distribution, and is not *
* removed from any of its header files. Mention of ncurses in any *
* applications linked with it is highly appreciated. *
* *
* ncurses comes AS IS with no warranty, implied or expressed. *
* *
***************************************************************************/
#include <curses.priv.h>
#include <sys/stat.h>
#include <time.h>
#include <term.h> /* exit_ca_mode, non_rev_rmcup */
MODULE_ID("Id: lib_screen.c,v 1.10 1997/12/27 19:48:58 tom Exp $")
static time_t dumptime;
WINDOW *getwin(FILE *filep)
{
WINDOW tmp, *nwin;
int n;
T((T_CALLED("getwin(%p)"), filep));
(void) fread(&tmp, sizeof(WINDOW), 1, filep);
if (ferror(filep))
returnWin(0);
if ((nwin = newwin(tmp._maxy+1, tmp._maxx+1, 0, 0)) == 0)
returnWin(0);
/*
* We deliberately do not restore the _parx, _pary, or _parent
* fields, because the window hierarchy within which they
* made sense is probably gone.
*/
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|_ISPAD);
nwin->_attrs = tmp._attrs;
nwin->_bkgd = tmp._bkgd;
nwin->_clear = tmp._clear;
nwin->_scroll = tmp._scroll;
nwin->_leaveok = tmp._leaveok;
nwin->_use_keypad = tmp._use_keypad;
nwin->_delay = tmp._delay;
nwin->_immed = tmp._immed;
nwin->_sync = tmp._sync;
nwin->_regtop = tmp._regtop;
nwin->_regbottom = tmp._regbottom;
for (n = 0; n < nwin->_maxy + 1; n++)
{
(void) fread(nwin->_line[n].text,
sizeof(chtype), (size_t)(nwin->_maxx + 1), filep);
if (ferror(filep))
{
delwin(nwin);
returnWin(0);
}
}
touchwin(nwin);
returnWin(nwin);
}
int putwin(WINDOW *win, FILE *filep)
{
int code = ERR;
int n;
T((T_CALLED("putwin(%p,%p)"), win, filep));
if (win) {
(void) fwrite(win, sizeof(WINDOW), 1, filep);
if (ferror(filep))
returnCode(code);
for (n = 0; n < win->_maxy + 1; n++)
{
(void) fwrite(win->_line[n].text,
sizeof(chtype), (size_t)(win->_maxx + 1), filep);
if (ferror(filep))
returnCode(code);
}
code = OK;
}
returnCode(code);
}
int scr_restore(const char *file)
{
FILE *fp;
T((T_CALLED("scr_restore(%s)"), _nc_visbuf(file)));
if ((fp = fopen(file, "r")) == 0)
returnCode(ERR);
else
{
delwin(newscr);
newscr = getwin(fp);
(void) fclose(fp);
returnCode(OK);
}
}
int scr_dump(const char *file)
{
FILE *fp;
T((T_CALLED("scr_dump(%s)"), _nc_visbuf(file)));
if ((fp = fopen(file, "w")) == 0)
returnCode(ERR);
else
{
(void) putwin(newscr, fp);
(void) fclose(fp);
dumptime = time((time_t *)0);
returnCode(OK);
}
}
int scr_init(const char *file)
{
FILE *fp;
struct stat stb;
T((T_CALLED("scr_init(%s)"), _nc_visbuf(file)));
#ifdef exit_ca_mode
if (exit_ca_mode && non_rev_rmcup)
returnCode(ERR);
#endif /* exit_ca_mode */
if ((fp = fopen(file, "r")) == 0)
returnCode(ERR);
else if (fstat(STDOUT_FILENO, &stb) || stb.st_mtime > dumptime)
returnCode(ERR);
else
{
delwin(curscr);
curscr = getwin(fp);
(void) fclose(fp);
returnCode(OK);
}
}
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);
newscr = dupwin(curscr);
returnCode(OK);
}
}
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