Changeset 5661:efd1ca5963ee in roaraudio for libroar/keyval.c

Timestamp:

09/22/12 22:30:52 (12 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

Improved kv API: added roar_keyval_copy()

File:

• libroar/keyval.c (modified) (1 diff)

libroar/keyval.c

@@ -163 +163 @@
 }
 
+static inline void _copy_str(char ** dst, const char * src) {
+ for (; *src; src++, (*dst)++) **dst = *src;
+ *((*dst)++) = 0;
+}
+
+void * roar_keyval_copy(struct roar_keyval ** copy, const struct roar_keyval * src, ssize_t len) {
+ size_t buflen = 0;
+ ssize_t i;
+ void * ret;
+ char * p;
+ struct roar_keyval * c;
+
+ // TODO: optimize this.
+ if ( len == -1 ) {
+  len = 0;
+  for (i = 0; src[i].key != NULL || src[i].value != NULL; i++)
+   len++;
+ }
+
+ for (i = 0; i < len; i++) {
+  if ( src[i].key != NULL )
+   buflen += roar_mm_strlen(src[i].key) + 1;
+  if ( src[i].value != NULL )
+   buflen += roar_mm_strlen(src[i].value) + 1;
+ }
+
+ c   = roar_mm_malloc(len * sizeof(struct roar_keyval));
+ if ( c == NULL )
+  return NULL;
+
+ memset(c, 0, len * sizeof(struct roar_keyval));
+
+ ret = roar_mm_malloc(buflen);
+ if ( ret == NULL )
+  return NULL;
+
+ memset(ret, 0, buflen);
+
+ p = ret;
+
+ for (i = 0; i < len; i++) {
+  if ( src[i].key == NULL ) {
+   c[i].key = NULL;
+  } else {
+   c[i].key = p;
+   _copy_str(&p, src[i].key);
+  }
+
+  if ( src[i].value == NULL ) {
+   c[i].value = NULL;
+  } else {
+   c[i].value = p;
+   _copy_str(&p, src[i].value);
+  }
+ }
+
+ *copy = c;
+ return ret;
+}
+
 //ll