command: Add command_decode_ptr() helper

Add a helper function to convert from a string buffer passed in the
args[] parameter to an actual pointer.  This avoids all the callers
needing to perfrom pointer manipulation.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

1 files changed, 13 insertions, 1 deletions

diff --git a/src/command.c b/src/command.c
index b0c7f882..e3167baf 100644
--- a/src/command.c
+++ b/src/command.c
@@ -15,6 +15,18 @@
 
 static uint8_t next_sequence = MESSAGE_DEST;
 
+static uint32_t
+command_encode_ptr(void *p)
+{
+    return (size_t)p;
+}
+
+void *
+command_decode_ptr(uint32_t v)
+{
+    return (void*)(size_t)v;
+}
+
 
 /****************************************************************
  * Binary message parsing
@@ -78,7 +90,7 @@ command_parsef(uint8_t *p, uint8_t *maxend
             if (p + len > maxend)
                 goto error;
             *args++ = len;
-            *args++ = (size_t)p;
+            *args++ = command_encode_ptr(p);
             p += len;
             break;
         }