From e32fe13c87d51eb929a4ff182abbda8656579136 Mon Sep 17 00:00:00 2001
From: dakkar <dakkar@thenautilus.net>
Date: Sat, 23 May 2009 14:49:57 +0200
Subject: complies, may even work

---
 src/evdev.c | 69 ++++++++++++++++++++++++++++++++++++++++++-------------------
 1 file changed, 48 insertions(+), 21 deletions(-)

diff --git a/src/evdev.c b/src/evdev.c
index 8b49b01..1ce49d0 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -132,35 +132,43 @@ static Atom prop_axis_label = 0;
 static Atom prop_btn_label = 0;
 #endif
 
-#define remapKey(ev,x) (ev->keyremap && ev->keyremap->sl[(x)/256] ? ev->keyremap->sl[(x)/256]->cd[(x)%256] : (x))
+static uint16_t
+remapKey(EvdevPtr ev, uint16_t code) 
+{
+  uint8_t slice=code/256;
+  uint8_t offs=code%256;
+
+  if (!ev->keyremap) return code;
+  if (!(ev->keyremap->sl[slice])) return code;
+  if (!(ev->keyremap->sl[slice]->cd[offs])) return code;
+  return ev->keyremap->sl[slice]->cd[offs];
+}
 
 static void
 addRemap(EvdevPtr ev,uint16_t code,uint8_t value)
 {
   uint8_t slice=code/256;
   uint8_t offs=code%256;
-  if (!ev->map) {
-    ev->map=(EvdevKeyRemapPtr)malloc(sizeof(EvdevKeyRemap));
-    memset(ev->map,0,sizeof(EvdevKeyRemap));
+  if (!ev->keyremap) {
+    ev->keyremap=(EvdevKeyRemapPtr)xcalloc(1,sizeof(EvdevKeyRemap));
   }
-  if (!ev->map->sl[slice]) {
-    ev->map->sl[slice]=(EvdevKeyRemapSlice*)malloc(sizeof(EvdevKeyRemapSlice));
-    memset(ev->map->sl[slice],0,sizeof(EvdevKeyRemapSlice));
+  if (!ev->keyremap->sl[slice]) {
+    ev->keyremap->sl[slice]=(EvdevKeyRemapSlice*)xcalloc(1,sizeof(EvdevKeyRemapSlice));
   }
-  ev->map->sl[slice]->cd[offs]=value;
+  ev->keyremap->sl[slice]->cd[offs]=value;
 }
 
 static void
 freeRemap(EvdevPtr ev)
 {
   uint16_t slice;
-  if (!ev->map) return;
+  if (!ev->keyremap) return;
   for (slice=0;slice<256;++slice) {
-    if (!ev->map->sl[slice]) continue;
-    free(ev->map->sl[slice]);
+    if (!ev->keyremap->sl[slice]) continue;
+    xfree(ev->keyremap->sl[slice]);
   }
-  free(ev->map);
-  ev->map=0;
+  xfree(ev->keyremap);
+  ev->keyremap=0;
 }
 
 /* All devices the evdev driver has allocated and knows about.
@@ -281,16 +289,35 @@ SetXkbOption(InputInfoPtr pInfo, char *name, char **option)
 static void
 SetRemapOption(InputInfoPtr pInfo,char* name,EvdevPtr ev)
 {
-    char *s;
+  char *s,*c;
+  unsigned long int code,value;
+  int consumed;
+
+  s = xf86SetStrOption(pInfo->options, name, NULL);
+  if (!s) return;
+  if (!s[0]) {
+    xfree(s);
+    return;
+  }
 
-    s = xf86SetStrOption(pInfo->options, name, NULL);
-    if (!s) return;
-    if (!s[0]) {
-      xfree(s);
-      return;
+  c=s;
+  while (sscanf(c," %li = %li %n",&code,&value,&consumed)) {
+    if (code < 0 || code > 65535L) {
+      xf86Msg(X_ERROR,"%s: input code %ld out of range for option \"event_key_remap\", ignoring.\n",pInfo->name,code);
+      continue;
+    }
+    if (value < 1 || value > 255) {
+      xf86Msg(X_ERROR,"%s: output value %ld out of range for option \"event_key_remap\", ignoring.\n",pInfo->name,code);
+      continue;
     }
+    addRemap(ev,code,value);
+    c+=consumed;
+  }
 
-    
+  if (*c!='\0') {
+    xf86Msg(X_ERROR, "%s: invalid input for option \"event_key_remap\" starting at '%s', ignoring.\n",
+            pInfo->name, c);
+  }
 }
 
 static int wheel_up_button = 4;
@@ -320,7 +347,7 @@ EvdevQueueKbdEvent(InputInfoPtr pInfo, struct input_event *ev, int value)
             )
 	return;
 
-    code=remapKey((EvdevPtr)pInfo->private,code);
+    code=remapKey((EvdevPtr)(pInfo->private),code);
     if (code > 255)
     {
         if (ev->code <= KEY_MAX && !warned[ev->code])
-- 
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