ncurses 5.7 - patch 20090419

[ncurses.git] / ncurses / base / lib_screen.c

diff --git a/ncurses/base/lib_screen.c b/ncurses/base/lib_screen.c
index 5d67e1993cd9f331788d28f5e63691137243a0ab..745a366731eb60143857fa8a24f214b3b67e09c8 100644 (file)
--- a/ncurses/base/lib_screen.c
+++ b/ncurses/base/lib_screen.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2002,2006 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2008,2009 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            *
@@ -29,12 +29,15 @@
 /****************************************************************************
  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
- *     and: Thomas E. Dickey 1996 on                                        *
+ *     and: Thomas E. Dickey                        1996 on                 *
+ *     and: Juergen Pfeifer                         2009                    *
  ****************************************************************************/
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: lib_screen.c,v 1.29 2006/05/27 19:21:38 tom Exp $")
+MODULE_ID("$Id: lib_screen.c,v 1.32 2009/02/15 00:39:13 tom Exp $")
+
+#define MAX_SIZE 0x3fff                /* 16k is big enough for a window or pad */
 
 NCURSES_EXPORT(WINDOW *)
 getwin(FILE *filep)
@@ -46,7 +49,11 @@ getwin(FILE *filep)
 
     clearerr(filep);
     (void) fread(&tmp, sizeof(WINDOW), 1, filep);
-    if (ferror(filep))
+    if (ferror(filep)
+       || tmp._maxy == 0
+       || tmp._maxy > MAX_SIZE
+       || tmp._maxx == 0
+       || tmp._maxx > MAX_SIZE)
        returnWin(0);
 
     if (tmp._flags & _ISPAD) {
@@ -115,7 +122,7 @@ putwin(WINDOW *win, FILE *filep)
     T((T_CALLED("putwin(%p,%p)"), win, filep));
 
     if (win != 0) {
-       size_t len = (win->_maxx + 1);
+       size_t len = (size_t) (win->_maxx + 1);
 
        clearerr(filep);
        if (fwrite(win, sizeof(WINDOW), 1, filep) != 1
@@ -135,7 +142,7 @@ putwin(WINDOW *win, FILE *filep)
 }
 
 NCURSES_EXPORT(int)
-scr_restore(const char *file)
+NCURSES_SP_NAME(scr_restore) (NCURSES_SP_DCLx const char *file)
 {
     FILE *fp = 0;
 
@@ -146,12 +153,23 @@ scr_restore(const char *file)
        returnCode(ERR);
     } else {
        delwin(newscr);
-       SP->_newscr = newscr = getwin(fp);
+       SP_PARM->_newscr = getwin(fp);
+#if !USE_REENTRANT
+       newscr = SP_PARM->_newscr;
+#endif
        (void) fclose(fp);
        returnCode(OK);
     }
 }
 
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+scr_restore(const char *file)
+{
+    return NCURSES_SP_NAME(scr_restore) (CURRENT_SCREEN, file);
+}
+#endif
+
 NCURSES_EXPORT(int)
 scr_dump(const char *file)
 {
@@ -170,7 +188,7 @@ scr_dump(const char *file)
 }
 
 NCURSES_EXPORT(int)
-scr_init(const char *file)
+NCURSES_SP_NAME(scr_init) (NCURSES_SP_DCLx const char *file)
 {
     FILE *fp = 0;
 
@@ -184,14 +202,25 @@ scr_init(const char *file)
        returnCode(ERR);
     } else {
        delwin(curscr);
-       SP->_curscr = curscr = getwin(fp);
+       SP_PARM->_curscr = getwin(fp);
+#if !USE_REENTRANT
+       curscr = SP_PARM->_curscr;
+#endif
        (void) fclose(fp);
        returnCode(OK);
     }
 }
 
+#if NCURSES_SP_FUNCS
 NCURSES_EXPORT(int)
-scr_set(const char *file)
+scr_init(const char *file)
+{
+    return NCURSES_SP_NAME(scr_init) (CURRENT_SCREEN, file);
+}
+#endif
+
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(scr_set) (NCURSES_SP_DCLx const char *file)
 {
     T((T_CALLED("scr_set(%s)"), _nc_visbuf(file)));
 
@@ -199,7 +228,18 @@ scr_set(const char *file)
        returnCode(ERR);
     } else {
        delwin(newscr);
-       SP->_newscr = newscr = dupwin(curscr);
+       SP_PARM->_newscr = dupwin(curscr);
+#if !USE_REENTRANT
+       newscr = SP_PARM->_newscr;
+#endif
        returnCode(OK);
     }
 }
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+scr_set(const char *file)
+{
+    return NCURSES_SP_NAME(scr_set) (CURRENT_SCREEN, file);
+}
+#endif