src/model.c

@@ -38,27 +38,25 @@
 
 struct model_t *knownModels = NULL;
 
-static xmlHashTablePtr hashTable == NULL;
-
 /* -------------------------------------------------------------------------- */
 
 /**
  * Recursively populates a hash table with XML nodes, using the node paths as keys.
  *
+ * @param self The self structure containing hash table containing
+ *             nodes indexed by their paths to populate
  * @param node The current node being processed.
- * @param hashTable The hash table to populate.
  * @param currentPath The path to the current node.
  */
-void model_populate_hashtable (xmlNode *node,
-                              char *currentPath)
+void model_populate_hashTable (struct model_t *self, xmlNode *node, char *currentPath)
 {
     if (node == NULL) return;
 
-    assert(hashTable == NULL);
+    assert(self->hashTable == NULL);
 
     // Skip text nodes and others that are not element nodes
     if (node->type != XML_ELEMENT_NODE) {
-        model_populate_hashtable (node->next, hashTable, currentPath);
+        model_populate_hashTable (node->next, self->hashTable, currentPath);
         return;
     }
 
@@ -71,43 +69,46 @@ void model_populate_hashtable (xmlNode *node,
     }
 
     // Add current node to hash table with its path as the key
-    xmlHashAddEntry (hashTable, (const xmlChar *)newPath, node);
+    xmlHashAddEntry (self->hashTable, (const xmlChar *)newPath, node);
 
     // Recurse into child nodes with the updated path
-    model_populate_hashtable (node->children, hashTable, newPath);
+    model_populate_hashTable (self, node->children, newPath);
 
     // Continue with the next sibling
-    model_populate_hashtable (node->next, hashTable, currentPath);
+    model_populate_hashTable (self, node->next, currentPath);
 }
 
 /*
  * Finds a node by a path of tags.
  *
- * @param node The starting node for the search.
+ * @param self The self structure containing hash table containing
+ *             nodes indexed by their paths.
  * @param path The path to the tag, with '/' as the delimiter.
  * @return The content of the tag at the end of the path, or NULL if not found.
  */
-char* model_find_node_by_path (xmlNode *node, const char *path)
+xmlNodePtr model_get_node (struct model_t *self, const char *path)
 {
-    assert(hashTable != NULL);
+    assert(self->hashTable != NULL);
 
-    return (xmlNodePtr)xmlHashLookup(hashTable, (const xmlChar *)path);
+    return (xmlNodePtr)xmlHashLookup (self->hashTable, (const xmlChar *)path);
 }
 
 /**
  * Modifies the content of an XML node identified by its path in the hash table.
  *
- * @param hashTable The hash table containing the XML nodes.
+ * @param self The self structure containing hash table containing
+ *             nodes indexed by their paths.
  * @param path The path to the node to modify.
  * @param newContent The new content to set for the node.
  * @return 1 if the node was found and modified, 0 otherwise.
  */
-int model_modify_node (const char *path,
+int model_modify_node (struct model_t *self,
+                       const char *path,
                        const char *newContent)
 {
-    assert(hashTable != NULL);
+    assert(self->hashTable != NULL);
 
-    xmlNodePtr node = model_find_node_by_path(hashTable, path);
+    xmlNodePtr node = model_get_node (self, path);
     if (node) {
         // Free the current content of the node, if any
         xmlNodeSetContent (node, (const xmlChar *)""); // Clear existing content
@@ -121,17 +122,19 @@ int model_modify_node (const char *path,
 /**
  * Retrieves the value of an attribute for a node identified by its path.
  *
- * @param hashTable The hash table containing nodes indexed by their paths.
+ * @param self The self structure containing hash table containing
+ *             nodes indexed by their paths.
  * @param nodePath The path to the node.
  * @param attributeName The name of the attribute.
  * @return The value of the attribute, or NULL if not found.
  */
-char* model_get_attribute (const char* nodePath,
+char *model_get_attribute (struct model_t *self,
+                           const char* nodePath,
                            const char* attributeName)
 {
-    assert(hashTable != NULL);
+    assert(self->hashTable != NULL);
 
-    xmlNodePtr node = (xmlNodePtr)xmlHashLookup (hashTable, (const xmlChar*)nodePath);
+    xmlNodePtr node = (xmlNodePtr)xmlHashLookup (self->hashTable, (const xmlChar*)nodePath);
     if (node) {
         return getAttributeValue (node, attributeName);
     } else {
@@ -142,19 +145,21 @@ char* model_get_attribute (const char* nodePath,
 /**
  * Sets or updates the value of an attribute for a node identified by its path.
  *
- * @param hashTable The hash table containing nodes indexed by their paths.
+ * @param self The self structure containing hash table containing
+ *             nodes indexed by their paths.
  * @param nodePath The path to the node.
  * @param attributeName The name of the attribute to set.
  * @param attributeValue The value to set for the attribute.
  * @return 1 on success, 0 on failure.
  */
-int model_set_attribute (const char* nodePath,
+int model_set_attribute (struct model_t *self,
+                         const char* nodePath,
                          const char* attributeName,
                          const char* attributeValue)
 {
-    assert(hashTable != NULL);
+    assert(self->hashTable != NULL);
 
-    xmlNodePtr node = (xmlNodePtr)xmlHashLookup (hashTable, (const xmlChar*)nodePath);
+    xmlNodePtr node = (xmlNodePtr)xmlHashLookup (self->hashTable, (const xmlChar*)nodePath);
     if (node) {
         return setAttributeValue (node, attributeName, attributeValue);
     } else {
@@ -163,12 +168,11 @@ int model_set_attribute (const char* nodePath,
 }
 
 /**
- * Copies a node recursively to a new sibling node with a modified attribute and updates the hashtable.
+ * Copies a node recursively to a new sibling node with a modified attribute and updates the self->hashTable.
  *
- * @param doc The document to which the nodes belong.
  * @param node The node to copy.
- * @param hashTable The hashtable for tracking nodes by path.
- * @param originalNodePath The path of the original node in the hashtable.
+ * @param self The self structure for tracking nodes by path.
+ * @param originalNodePath The path of the original node in the self->hashTable.
  * @param attributeName The name of the attribute to modify in the copied node.
  * @param newAttributeValue The new value for the specified attribute in the copied node.
  * @return The copied node with the modified attribute, or NULL on failure.
@@ -179,7 +183,7 @@ xmlNodePtr model_copy_node(struct model_t *self,
                            const char* attributeName,
                            const char* newAttributeValue)
 {
-    assert(hashTable != NULL);
+    assert(self->hashTable != NULL);
 
     // Deep copy the node
     xmlNodePtr copiedNode = xmlDocCopyNode(node, self->doc, 1);
@@ -197,8 +201,8 @@ xmlNodePtr model_copy_node(struct model_t *self,
     char newPath[1024];
     snprintf (newPath, sizeof(newPath), "%s_copy", originalNodePath);
 
-    // Update the hashtable with the new node's path
-    xmlHashAddEntry (hashTable, (const xmlChar*)newPath, copiedNode);
+    // Update the self->hashTable with the new node's path
+    xmlHashAddEntry (self->hashTable, (const xmlChar*)newPath, copiedNode);
 
     return copiedNode;
 }
@@ -224,7 +228,8 @@ xmlNodePtr model_copy_node(struct model_t *self,
  *                 additional information to the callback function. It is passed
  *                 directly through to the callback function as its second argument.
  */
-void model_iterate_node(xmlNodePtr node,
+void model_iterate_node(struct model_t *self,
+                        xmlNodePtr node,
                         void (*processNode)(xmlNodePtr node, void* userData), void* userData)
 {
     for (xmlNodePtr curNode = node->children; curNode; curNode = curNode->next) {
@@ -308,9 +313,9 @@ static bool model_init(struct model_t *self)
 		return false;
 	}
 
-    self->hashtable = xmlHashCreate(0);
+    model_populate_hashTable(self, node, "/");
 
-    if (self->hashtable == NULL) {
+    if (self->hashTable == NULL) {
 		printerr("Can't create model hash table !\n");
 		xmlFreeDoc(self->doc);
 		return false;
@@ -322,7 +327,7 @@ static bool model_init(struct model_t *self)
 static bool model_shutdown(struct model_t *self)
 {
     xmlFreeDoc(self->doc);
-    xmlHashFree(self->hashtable, NULL);
+    xmlHashFree(self->hashTable, NULL);
     // This is to debug memory for regression tests
     //xmlMemoryDump();