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Implemented @attribute='value' in XPath

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SVN revision: 1285
This commit is contained in:
Stefan Ritt 2005-03-27 21:49:06 +00:00
parent 9a617d6e46
commit c05f571042
1 changed files with 26 additions and 13 deletions
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39
src/mxml.c
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@ -647,10 +647,11 @@ int mxml_find_nodes1(PMXML_NODE tree, char *xml_path, PMXML_NODE **nodelist, int
/<node>[index]/<node> Find subnode of the above
/<node>[<subnode>=<value>] Find a node which has a specific subnode
/<node>[<subnode>=<value>]/<node> Find subnode of the above
/<node>[@<attrib>=<value>]/<node> Find a node which has a specific attribute
*/
{
PMXML_NODE pnode;
char *p1, *p2, *p3, node_name[256], condition[256], subnode[256], value[256];
char *p1, *p2, *p3, node_name[256], condition[256], subnode[256], cond_attr[256], value[256];
int i, j, index;
size_t len;
@ -672,7 +673,7 @@ int mxml_find_nodes1(PMXML_NODE tree, char *xml_path, PMXML_NODE **nodelist, int
memcpy(node_name, p1, len);
node_name[len] = 0;
index = 0;
subnode[0] = value[0] = 0;
subnode[0] = cond_attr[0] = value[0] = 0;
if (*p2 == '[') {
p2++;
if (isdigit(*p2)) {
@ -683,7 +684,7 @@ int mxml_find_nodes1(PMXML_NODE tree, char *xml_path, PMXML_NODE **nodelist, int
return 0;
p2++;
} else {
/* evaluate [<subnode>=<value>] */
/* evaluate [<@attrib>/<subnode>=<value>] */
while (*p2 && isspace(*p2))
p2++;
strlcpy(condition, p2, sizeof(condition));
@ -693,10 +694,18 @@ int mxml_find_nodes1(PMXML_NODE tree, char *xml_path, PMXML_NODE **nodelist, int
return 0;
p2 = strchr(p2, ']')+1;
if ((p3 = strchr(condition, '=')) != NULL) {
strlcpy(subnode, condition, sizeof(subnode));
*strchr(subnode, '=') = 0;
while (subnode[0] && isspace(subnode[strlen(subnode)-1]))
subnode[strlen(subnode)-1] = 0;
if (condition[0] == '@') {
strlcpy(cond_attr, condition+1, sizeof(cond_attr));
*strchr(cond_attr, '=') = 0;
while (cond_attr[0] && isspace(cond_attr[strlen(cond_attr)-1]))
cond_attr[strlen(cond_attr)-1] = 0;
} else {
strlcpy(subnode, condition, sizeof(subnode));
*strchr(subnode, '=') = 0;
while (subnode[0] && isspace(subnode[strlen(subnode)-1]))
subnode[strlen(subnode)-1] = 0;
}
p3++;
while (*p3 && isspace(*p3))
p3++;
@ -730,6 +739,13 @@ int mxml_find_nodes1(PMXML_NODE tree, char *xml_path, PMXML_NODE **nodelist, int
if (!mxml_add_resultnode(pnode->child+i, p2, nodelist, found))
return 0;
} else if (cond_attr[0]) {
/* search node with attribute */
if (strcmp(pnode->child[i].name, node_name) == 0)
if (mxml_get_attribute(pnode->child+i, cond_attr) &&
strcmp(mxml_get_attribute(pnode->child+i, cond_attr), value) == 0)
if (!mxml_add_resultnode(pnode->child+i, p2, nodelist, found))
return 0;
} else {
if (strcmp(pnode->child[i].name, node_name) == 0)
if (index == 0 || ++j == index)
@ -1445,18 +1461,15 @@ void mxml_test()
PMXML_NODE tree, *node;
int i, n;
tree = mxml_create_root_node();
tree = mxml_parse_file("c:\\elogdemo\\forum.xml", err, sizeof(err));
tree = mxml_parse_file("c:\\online\\odb.xml", err, sizeof(err));
node = NULL;
n = mxml_find_nodes(tree, "/list/user[name='stefan']/full_name", &node);
n = mxml_find_nodes(tree, "/odb/dir[@name=\"Experiment\"]/dir[@name='Run Parameters']/key[@name='Comment']", &node);
for (i=0 ; i<n ; i++)
printf("%s\n", node[i]->value);
free(node);
*node = mxml_find_node(tree, "/list/user[name='stefan']/full_name");
mxml_debug_tree(*node, 0);
free(node);
mxml_debug_tree(tree, 0);
mxml_free_tree(tree);