diff -r a76af67a3a4b -r 7b156b764d11 pdcurses/scr_dump.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pdcurses/scr_dump.c	Sat Jan 09 17:41:21 2016 +0200
@@ -0,0 +1,210 @@
+/* Public Domain Curses */
+
+#include <curspriv.h>
+
+RCSID("$Id: scr_dump.c,v 1.30 2008/07/13 16:08:18 wmcbrine Exp $")
+
+/*man-start**************************************************************
+
+  Name:                                                         scr_dump
+
+  Synopsis:
+        int putwin(WINDOW *win, FILE *filep);
+        WINDOW *getwin(FILE *filep);
+        int scr_dump(const char *filename);
+        int scr_init(const char *filename);
+        int scr_restore(const char *filename);
+        int scr_set(const char *filename);
+
+  Description:
+        getwin() reads window-related data previously stored in a file 
+        by putwin(). It then creates and initialises a new window using 
+        that data.
+
+        putwin() writes all data associated with a window into a file, 
+        using an unspecified format. This information can be retrieved 
+        later using getwin().
+
+        scr_dump() writes the current contents of the virtual screen to 
+        the file named by filename in an unspecified format.
+
+        scr_restore() function sets the virtual screen to the contents 
+        of the file named by filename, which must have been written 
+        using scr_dump(). The next refresh operation restores the screen 
+        to the way it looked in the dump file.
+
+        In PDCurses, scr_init() does nothing, and scr_set() is a synonym 
+        for scr_restore(). Also, scr_dump() and scr_restore() save and 
+        load from curscr. This differs from some other implementations, 
+        where scr_init() works with curscr, and scr_restore() works with 
+        newscr; but the effect should be the same. (PDCurses has no 
+        newscr.)
+
+  Return Value:
+        On successful completion, getwin() returns a pointer to the 
+        window it created. Otherwise, it returns a null pointer. Other 
+        functions return OK or ERR.
+
+  Portability                                X/Open    BSD    SYS V
+        putwin                                  Y
+        getwin                                  Y
+        scr_dump                                Y
+        scr_init                                Y
+        scr_restore                             Y
+        scr_set                                 Y
+
+**man-end****************************************************************/
+
+#include <stdlib.h>
+#include <string.h>
+
+#define DUMPVER 1   /* Should be updated whenever the WINDOW struct is
+                       changed */
+
+int putwin(WINDOW *win, FILE *filep)
+{
+    static const char *marker = "PDC";
+    static const unsigned char version = DUMPVER;
+
+    PDC_LOG(("putwin() - called\n"));
+
+    /* write the marker and the WINDOW struct */
+
+    if (filep && fwrite(marker, strlen(marker), 1, filep)
+              && fwrite(&version, 1, 1, filep)
+              && fwrite(win, sizeof(WINDOW), 1, filep))
+    {
+        int i;
+
+        /* write each line */
+
+        for (i = 0; i < win->_maxy && win->_y[i]; i++)
+            if (!fwrite(win->_y[i], win->_maxx * sizeof(chtype), 1, filep))
+                return ERR;
+
+        return OK;
+    }
+
+    return ERR;
+}
+
+WINDOW *getwin(FILE *filep)
+{
+    WINDOW *win;
+    char marker[4];
+    int i, nlines, ncols;
+
+    PDC_LOG(("getwin() - called\n"));
+
+    if ( !(win = malloc(sizeof(WINDOW))) )
+        return (WINDOW *)NULL;
+
+    /* check for the marker, and load the WINDOW struct */
+
+    if (!filep || !fread(marker, 4, 1, filep) || strncmp(marker, "PDC", 3)
+        || marker[3] != DUMPVER || !fread(win, sizeof(WINDOW), 1, filep))
+    {
+        free(win);
+        return (WINDOW *)NULL;
+    }
+
+    nlines = win->_maxy;
+    ncols = win->_maxx;
+
+    /* allocate the line pointer array */
+
+    if ( !(win->_y = malloc(nlines * sizeof(chtype *))) )
+    {
+        free(win);
+        return (WINDOW *)NULL;
+    }
+
+    /* allocate the minchng and maxchng arrays */
+
+    if ( !(win->_firstch = malloc(nlines * sizeof(int))) )
+    {
+        free(win->_y);
+        free(win);
+        return (WINDOW *)NULL;
+    }
+
+    if ( !(win->_lastch = malloc(nlines * sizeof(int))) )
+    {
+        free(win->_firstch);
+        free(win->_y);
+        free(win);
+        return (WINDOW *)NULL;
+    }
+
+    /* allocate the lines */
+
+    if ( !(win = PDC_makelines(win)) )
+        return (WINDOW *)NULL;
+
+    /* read them */
+
+    for (i = 0; i < nlines; i++)
+    {
+        if (!fread(win->_y[i], ncols * sizeof(chtype), 1, filep))
+        {
+            delwin(win);
+            return (WINDOW *)NULL;
+        }
+    }
+
+    touchwin(win);
+
+    return win;
+}
+
+int scr_dump(const char *filename)
+{
+    FILE *filep;
+
+    PDC_LOG(("scr_dump() - called: filename %s\n", filename));
+
+    if (filename && (filep = fopen(filename, "wb")) != NULL)
+    {
+        int result = putwin(curscr, filep);
+        fclose(filep);
+        return result;
+    }
+
+    return ERR;
+}
+
+int scr_init(const char *filename)
+{
+    PDC_LOG(("scr_init() - called: filename %s\n", filename));
+
+    return OK;
+}
+
+int scr_restore(const char *filename)
+{
+    FILE *filep;
+
+    PDC_LOG(("scr_restore() - called: filename %s\n", filename));
+
+    if (filename && (filep = fopen(filename, "rb")) != NULL)
+    {
+        WINDOW *replacement = getwin(filep);
+        fclose(filep);
+
+        if (replacement)
+        {
+            int result = overwrite(replacement, curscr);
+            delwin(replacement);
+            return result;
+        }
+    }
+
+    return ERR;
+}
+
+int scr_set(const char *filename)
+{
+    PDC_LOG(("scr_set() - called: filename %s\n", filename));
+
+    return scr_restore(filename);
+}