add buffer_clone and ows_layer_no_prefix functions. somehow related to …

…MapServer#19

src/ows/ows_layer.c

@@ -300,6 +300,26 @@ list *ows_layer_list_ns_prefix(ows_layer_list * ll, list * layer_name)
 }
 
 
+/*
+ * Retrieve the layer name without prefix
+ */
+buffer *ows_layer_no_prefix(ows_layer_list * ll, buffer * layer_name)
+{
+  ows_layer_node *ln;
+
+  assert(ll);
+  assert(layer_name);
+
+  for (ln = ll->first; ln ; ln = ln->next)
+    if (buffer_cmp(ln->layer->name, layer_name->buf)) {
+      buffer_shift(layer_name, ln->layer->ns_prefix->use + 1);  /* +1 for ':' separator */
+      return layer_name;
+    }
+
+  return (buffer *) NULL;
+}
+
+
 /*
  * Retrieve the prefix linked to the specified layer
  */

src/ows_api.h

@@ -45,6 +45,7 @@ bool buffer_cmp (const buffer * buf, const char *str);
 bool buffer_ncmp(const buffer * buf, const char *str, size_t n);
 bool buffer_case_cmp (const buffer * buf, const char *str);
 void buffer_copy (buffer * dest, const buffer * src);
+buffer *buffer_clone(buffer * buf);
 void buffer_empty (buffer * buf);
 void buffer_flush (buffer * buf, FILE * output);
 void buffer_free (buffer * buf);
@@ -149,6 +150,7 @@ void ows_layer_list_free (ows_layer_list * ll);
 bool ows_layer_list_in_list (const ows_layer_list * ll, const list * l);
 ows_layer_list *ows_layer_list_init ();
 array *ows_layer_list_namespaces (ows_layer_list * ll);
+buffer *ows_layer_no_prefix(ows_layer_list * ll, buffer * layer_name);
 list *ows_layer_list_ns_prefix (ows_layer_list * ll, list * layer_name);
 bool ows_layer_list_retrievable (const ows_layer_list * ll);
 bool ows_layer_list_writable (const ows_layer_list * ll);

src/struct/buffer.c

@@ -352,6 +352,23 @@ void buffer_copy(buffer * dest, const buffer * src)
 }
 
 
+/*
+ * Copy the whole buffer struct to an another struct
+ */
+buffer *buffer_clone(buffer * buf)
+{
+  buffer *b;
+
+  assert(buf);
+  assert(buf->buf);
+
+  b = buffer_init();
+  buffer_copy(b, buf);
+
+  return b;
+}
+
+
 /*
  * Delete last N chars from a buffer
  */