/**
* Declare user-defined mapping between a URI and a namespace.
*/
static void
xfmt_prefix_declare(struct xfmt_pass2 *xp2, const char *uri, const char *prefix)
{
nv_pair_t *nv;
nv = nv_table_lookup(xp2->uri2prefix, uri);
if (nv != NULL) {
/*
* Silently ignore the mapping if we already have seen an identical one
* in the XML tree during the first pass.
*/
if (strcmp(prefix, nv_pair_value_str(nv)) != 0) {
g_carp("XFMT ignoring supplied prefix '%s' for '%s': "
"already saw '%s' in the tree", prefix, uri,
nv_pair_value_str(nv));
}
} else {
/*
* New mapping.
*/
nv = nv_pair_make_static_str(uri, prefix);
nv_table_insert_pair(xp2->uri2prefix, nv);
}
}
/**
* Record a tree-defined mapping between a prefix and a namespace URI.
*/
static void
xfmt_prefix_record(struct xfmt_pass1 *xp1, const char *prefix, const char *uri)
{
nv_pair_t *nv;
/*
* Our policy is to use one single prefix for a given namespace URI
* throughout the document. Although several prefixes could be used.
* this is confusing to read and serves no value: a human will be mislead
* into thinking the two namespaces are different because they carry
* distinct prefixes, and a machine will not care about the prefix value.
*/
nv = nv_table_lookup(xp1->uri2prefix, uri);
if (nv != NULL) {
/*
* Silently ignore the mapping if we already have seen an identical one
* in the XML tree.
*/
if (strcmp(prefix, nv_pair_value_str(nv)) != 0) {
g_carp("XFMT ignoring prefix '%s' for '%s': "
"already saw '%s' earlier in the tree", prefix, uri,
nv_pair_value_str(nv));
}
} else {
/*
* New mapping.
*/
nv = nv_pair_make_static_str(uri, prefix);
nv_table_insert_pair(xp1->uri2prefix, nv);
}
}
/**
* Add namespace declaration to element.
*
* There must not be any ':' in the prefix string.
* The prefix must not have been already declared locally.
*
* @param element the element node
* @param prefix the shorthand prefix for the namespace
* @param uri the namespace URI
*/
void
xnode_add_namespace(xnode_t *element, const char *prefix, const char *uri)
{
size_t uri_len;
xnode_check(element);
g_assert(XNODE_T_ELEMENT == element->type);
g_assert(prefix != NULL);
g_assert(uri != NULL);
g_assert(NULL == strchr(prefix, ':'));
if (NULL == element->u.e.ns)
element->u.e.ns = nv_table_make(TRUE);
/* Prefix must not be redeclared in the same element */
g_assert(NULL == nv_table_lookup(element->u.e.ns, prefix));
uri_len = strlen(uri);
nv_table_insert(element->u.e.ns, prefix, uri, uri_len + 1);
}
