Implemented mxml_debug_tree()

SVN revision: 1234

src/mxml.c

@@ -6,6 +6,9 @@
    Contents:     Midas XML Library
 
    $Log$
+   Revision 1.3  2005/03/03 15:34:21  ritt
+   Implemented mxml_debug_tree()
+
    Revision 1.2  2005/03/01 23:55:43  ritt
    Fixed compiler warnings
 
@@ -342,13 +345,25 @@ PMXML_NODE mxml_create_root_node()
 PMXML_NODE mxml_add_node(PMXML_NODE parent, char *node_name, char *value)
 /* add a subnode (child) to an existing parent node */
 {
-   PMXML_NODE pnode;
+   PMXML_NODE pnode, pchild;
+   int i, j;
 
    assert(parent);
    if (parent->n_children == 0)
       parent->child = malloc(sizeof(MXML_NODE));
-   else
+   else {
+      pchild = parent->child;
       parent->child = realloc(parent->child, sizeof(MXML_NODE)*(parent->n_children+1));
+
+      if (parent->child != pchild) {
+         /* correct parent pointer for children */
+         for (i=0 ; i<parent->n_children ; i++) {
+            pchild = parent->child+i;
+            for (j=0 ; j<pchild->n_children ; j++)
+               pchild->child[j].parent = pchild;
+         }
+      }
+   }
    assert(parent->child);
    pnode = &parent->child[parent->n_children];
    memset(pnode, 0, sizeof(MXML_NODE));
@@ -397,6 +412,17 @@ int mxml_get_number_of_children(PMXML_NODE pnode)
 
 /*------------------------------------------------------------------*/
 
+PMXML_NODE mxml_subnode(PMXML_NODE pnode, int index)
+/* return number of subnodes (children) of a node */
+{
+   assert(pnode);
+   if (index < pnode->n_children)
+      return &pnode->child[index];
+   return NULL;
+}
+
+/*------------------------------------------------------------------*/
+
 PMXML_NODE mxml_find_node(PMXML_NODE tree, char *xml_path)
 /*
    Search for a specific XML node with a subset of XPATH specifications.
@@ -1025,6 +1051,33 @@ BOOL mxml_write_tree(char *file_name, PMXML_NODE tree)
 
 /*------------------------------------------------------------------*/
 
+void mxml_debug_tree(PMXML_NODE tree, int level)
+/* print XML tree for debugging */
+{
+   int i;
+
+   for (i=0 ; i<level ; i++)
+      printf("  ");
+   printf("Name: %s\n", tree->name);
+   for (i=0 ; i<level ; i++)
+      printf("  ");
+   printf("Addr: %08X\n", tree);
+   for (i=0 ; i<level ; i++)
+      printf("  ");
+   printf("Prnt: %08X\n", tree->parent);
+   for (i=0 ; i<level ; i++)
+      printf("  ");
+   printf("NCld: %d\n", tree->n_children);
+
+   for (i=0 ; i<tree->n_children ; i++)
+      mxml_debug_tree(tree->child+i, level+1);
+
+   if (level == 0)
+      printf("\n");
+}
+
+/*------------------------------------------------------------------*/
+
 void mxml_free_tree(PMXML_NODE tree)
 /* free memory of XML tree, must be called after any 
    mxml_create_root_node() or mxml_parse_file() */

src/mxml.h

@@ -6,6 +6,9 @@
    Contents:     Header file for mxml.c
 
    $Log$
+   Revision 1.2  2005/03/03 15:34:40  ritt
+   Implemented mxml_debug_tree()
+
    Revision 1.1  2005/03/01 23:48:18  ritt
    Implemented MXML for password file
 
@@ -47,6 +50,7 @@ BOOL mxml_write_value(MXML_WRITER *writer, const char *value);
 BOOL mxml_close_document(MXML_WRITER *writer);
 
 int mxml_get_number_of_children(PMXML_NODE pnode);
+PMXML_NODE mxml_subnode(PMXML_NODE pnode, int index);
 PMXML_NODE mxml_find_node(PMXML_NODE tree, char *xml_path);
 char *mxml_get_value(PMXML_NODE pnode);
 char *mxml_get_attribute(PMXML_NODE pnode, char *name);
@@ -66,6 +70,7 @@ BOOL mxml_delete_attribute(PMXML_NODE, char *attrib_name);
 PMXML_NODE mxml_create_root_node();
 PMXML_NODE mxml_parse_file(char *file_name, char *error, int error_size);
 BOOL mxml_write_tree(char *file_name, PMXML_NODE tree);
+void mxml_debug_tree(PMXML_NODE tree, int level);
 void mxml_free_tree(PMXML_NODE tree);
 
 /*------------------------------------------------------------------*/