1 files changed, 95 insertions, 0 deletions
diff --git a/src/deh_mapping.c b/src/deh_mapping.c
new file mode 100644
index 00000000..fa19f8ee
--- /dev/null
+++ b/src/deh_mapping.c
@@ -0,0 +1,95 @@
+// Emacs style mode select   -*- C++ -*- 
+//-----------------------------------------------------------------------------
+//
+// $Id: deh_mapping.c 155 2005-10-03 10:25:37Z fraggle $
+//
+// Copyright(C) 2005 Simon Howard
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+//
+// $Log$
+// Revision 1.1  2005/10/03 10:25:37  fraggle
+// Add mapping code to map out structures and switch thing/frame code to use
+// this.
+//
+//
+//-----------------------------------------------------------------------------
+//
+// Dehacked "mapping" code
+// Allows the fields in structures to be mapped out and accessed by
+// name
+//
+//-----------------------------------------------------------------------------
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "deh_mapping.h"
+
+//
+// Set the value of a particular field in a structure by name
+//
+
+boolean DEH_SetMapping(deh_mapping_t *mapping, 
+                       void *structptr, char *name, int value)
+{
+    int i;
+
+    for (i=0; mapping->entries[i].name != NULL; ++i)
+    {
+        deh_mapping_entry_t *entry = &mapping->entries[i];
+
+        if (!strcasecmp(entry->name, name))
+        {
+            void *location;
+
+            location = structptr + (entry->location - mapping->base);
+
+     //       printf("Setting %p::%s to %i (%i bytes)\n",
+     //               structptr, name, value, entry->size);
+                
+            switch (entry->size)
+            {
+                case 1:
+                    * ((unsigned char *) location) = value;
+                    break;
+                case 2:
+                    * ((unsigned short *) location) = value;
+                    break;
+                case 4:
+                    * ((unsigned int *) location) = value;
+                    break;
+                case 8:
+                    * ((unsigned long long *) location) = value;
+                    break;
+                default:
+                    fprintf(stderr, "DEH_SetMapping: Unknown field type for %s\n", name);
+                    return false;
+            }
+
+            return true;
+        }
+    }
+
+    // field with this name not found
+
+    fprintf(stderr, "DEH_SetMapping: field named '%s' not found\n",
+            name);
+
+    return false;
+}
+