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Allow ' in xpath

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SVN revision: 1265
This commit is contained in:
ritt
2005-03-22 16:10:09 +00:00
parent eaeede7922
commit 8fc12acb4f
1 changed files with 35 additions and 105 deletions
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src/mxml.c
+35 -105
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@@ -6,6 +6,9 @@
Contents: Midas XML Library
$Log$
Revision 1.9 2005/03/22 16:10:09 ritt
Allow ' in xpath
Revision 1.8 2005/03/22 14:26:19 ritt
Implemented mxml_find_nodes()
@@ -524,110 +527,6 @@ PMXML_NODE mxml_subnode(PMXML_NODE pnode, int index)
/*------------------------------------------------------------------*/
PMXML_NODE mxml_find_node(PMXML_NODE tree, char *xml_path)
/*
Search for a specific XML node with a subset of XPATH specifications.
Return first found node.
Following elemets are possible
/<node>/<node>/..../<node> Find a node in the tree hierarchy
/<node>[index] Find child #[index] of node (index starts from 1)
/<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
*/
{
PMXML_NODE pnode;
char *p1, *p2, *p3, node_name[256], condition[256], subnode[256], value[256];
int i, j, index;
size_t len;
p1 = xml_path;
pnode = tree;
/* skip leading '/' */
if (*p1 && *p1 == '/')
p1++;
do {
p2 = p1;
while (*p2 && *p2 != '/' && *p2 != '[')
p2++;
len = (size_t)p2 - (size_t)p1;
if (len >= sizeof(node_name))
return NULL;
memcpy(node_name, p1, len);
node_name[len] = 0;
index = 0;
subnode[0] = value[0] = 0;
if (*p2 == '[') {
p2++;
if (isdigit(*p2)) {
/* evaluate [index] */
index = atoi(p2);
p2 = strchr(p2, ']');
if (p2 == NULL)
return NULL;
p2++;
} else {
/* evaluate [<subnode>=<value>] */
while (*p2 && isspace(*p2))
p2++;
strlcpy(condition, p2, sizeof(condition));
if (strchr(condition, ']'))
*strchr(condition, ']') = 0;
else
return NULL;
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;
p3++;
while (*p3 && isspace(*p3))
p3++;
strlcpy(value, p3, sizeof(value));
while (value[0] && isspace(value[strlen(value)-1]))
value[strlen(value)-1] = 0;
}
}
}
for (i=j=0 ; i<pnode->n_children ; i++) {
if (subnode[0]) {
/* search subnode */
for (j=0 ; j<pnode->child[i].n_children ; j++)
if (strcmp(pnode->child[i].child[j].name, subnode) == 0)
break;
if (j == pnode->child[i].n_children)
return NULL;
if (strcmp(pnode->child[i].child[j].value, value) == 0)
break;
} else {
if (strcmp(pnode->child[i].name, node_name) == 0)
if (index == 0 || ++j == index)
break;
}
}
if (i == pnode->n_children)
return NULL;
pnode = &pnode->child[i];
p1 = p2;
if (*p1 == '/')
p1++;
} while (*p2);
return pnode;
}
/*------------------------------------------------------------------*/
int mxml_find_nodes1(PMXML_NODE tree, char *xml_path, PMXML_NODE **nodelist, int *found);
int mxml_add_resultnode(PMXML_NODE node, char *xml_path, PMXML_NODE **nodelist, int *found)
@@ -720,6 +619,12 @@ int mxml_find_nodes1(PMXML_NODE tree, char *xml_path, PMXML_NODE **nodelist, int
value[strlen(value)-1] = 0;
if (value[0] && value[strlen(value)-1] == '\"')
value[strlen(value)-1] = 0;
} else if (*p3 == '\'') {
strlcpy(value, p3+1, sizeof(value));
while (value[0] && isspace(value[strlen(value)-1]))
value[strlen(value)-1] = 0;
if (value[0] && value[strlen(value)-1] == '\'')
value[strlen(value)-1] = 0;
} else {
strlcpy(value, p3, sizeof(value));
while (value[0] && isspace(value[strlen(value)-1]))
@@ -775,6 +680,27 @@ int mxml_find_nodes(PMXML_NODE tree, char *xml_path, PMXML_NODE **nodelist)
/*------------------------------------------------------------------*/
PMXML_NODE mxml_find_node(PMXML_NODE tree, char *xml_path)
/*
Search for a specific XML node with a subset of XPATH specifications.
Return first found node. For syntax see mxml_find_nodes()
*/
{
PMXML_NODE *node, pnode;
int n;
n = mxml_find_nodes(tree, xml_path, &node);
if (n > 0)
pnode = node[0];
else
pnode = NULL;
free(node);
return pnode;
}
/*------------------------------------------------------------------*/
char *mxml_get_value(PMXML_NODE pnode)
{
assert(pnode);
@@ -1368,11 +1294,15 @@ void mxml_test()
tree = mxml_parse_file("c:\\elogdemo\\forum.xml", err, sizeof(err));
node = NULL;
n = mxml_find_nodes(tree, "/list/user/full_name", &node);
n = mxml_find_nodes(tree, "/list/user[name='stefan']/full_name", &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);
mxml_debug_tree(tree, 0);
mxml_free_tree(tree);
}