xmlChar *
xsltEvalTemplateString(xsltTransformContextPtr ctxt,
xmlNodePtr contextNode,
xmlNodePtr inst)
{
xmlNodePtr oldInsert, insert = NULL;
xmlChar *ret;
if ((ctxt == NULL) || (contextNode == NULL) || (inst == NULL))
return(NULL);
if (inst->children == NULL)
return(NULL);
insert = xmlNewDocNode(ctxt->output, NULL,
(const xmlChar *)"fake", NULL);
if (insert == NULL) {
xsltTransformError(ctxt, NULL, contextNode,
"Failed to create temporary node\n");
return(NULL);
}
oldInsert = ctxt->insert;
ctxt->insert = insert;
xsltApplyOneTemplate(ctxt, contextNode, inst->children, NULL, NULL);
ctxt->insert = oldInsert;
ret = xmlNodeGetContent(insert);
if (insert != NULL)
xmlFreeNode(insert);
return(ret);
}
/**
* xsltEvalTemplateString:
* @ctxt: the XSLT transformation context
* @contextNode: the current node in the source tree
* @inst: the XSLT instruction (xsl:comment, xsl:processing-instruction)
*
* Processes the sequence constructor of the given instruction on
* @contextNode and converts the resulting tree to a string.
* This is needed by e.g. xsl:comment and xsl:processing-instruction.
*
* Returns the computed string value or NULL; it's up to the caller to
* free the result.
*/
xmlChar *
xsltEvalTemplateString(xsltTransformContextPtr ctxt,
xmlNodePtr contextNode,
xmlNodePtr inst)
{
xmlNodePtr oldInsert, insert = NULL;
xmlChar *ret;
if ((ctxt == NULL) || (contextNode == NULL) || (inst == NULL))
return(NULL);
if (inst->children == NULL)
return(NULL);
/*
* This creates a temporary element-node to add the resulting
* text content to.
* OPTIMIZE TODO: Keep such an element-node in the transformation
* context to avoid creating it every time.
*/
insert = xmlNewDocNode(ctxt->output, NULL,
(const xmlChar *)"fake", NULL);
if (insert == NULL) {
xsltTransformError(ctxt, NULL, contextNode,
"Failed to create temporary node\n");
return(NULL);
}
oldInsert = ctxt->insert;
ctxt->insert = insert;
/*
* OPTIMIZE TODO: if inst->children consists only of text-nodes.
*/
xsltApplyOneTemplate(ctxt, contextNode, inst->children, NULL, NULL);
ctxt->insert = oldInsert;
ret = xmlNodeGetContent(insert);
if (insert != NULL)
xmlFreeNode(insert);
return(ret);
}
static void
xslt_yelp_document (xsltTransformContextPtr ctxt,
xmlNodePtr node,
xmlNodePtr inst,
xsltStylePreCompPtr comp)
{
YelpTransform *transform;
xmlChar *page_id = NULL;
gchar *temp;
xmlChar *page_buf;
gint buf_size;
xsltStylesheetPtr style = NULL;
const char *old_outfile;
xmlDocPtr new_doc = NULL;
xmlDocPtr old_doc;
xmlNodePtr old_insert;
debug_print (DB_FUNCTION, "entering\n");
if (ctxt->state == XSLT_STATE_STOPPED)
return;
if (!ctxt || !node || !inst || !comp)
return;
transform = (YelpTransform *) ctxt->_private;
page_id = xsltEvalAttrValueTemplate (ctxt, inst,
(const xmlChar *) "href",
NULL);
if (page_id == NULL || *page_id == '\0') {
if (page_id)
xmlFree (page_id);
else
xsltTransformError (ctxt, NULL, inst,
_("No href attribute found on "
"yelp:document\n"));
/* FIXME: put a real error here */
goto done;
}
debug_print (DB_ARG, " page_id = \"%s\"\n", page_id);
old_outfile = ctxt->outputFile;
old_doc = ctxt->output;
old_insert = ctxt->insert;
ctxt->outputFile = (const char *) page_id;
style = xsltNewStylesheet ();
if (style == NULL) {
xsltTransformError (ctxt, NULL, inst,
_("Out of memory"));
goto done;
}
style->omitXmlDeclaration = TRUE;
new_doc = xmlNewDoc (BAD_CAST "1.0");
new_doc->charset = XML_CHAR_ENCODING_UTF8;
new_doc->dict = ctxt->dict;
xmlDictReference (new_doc->dict);
ctxt->output = new_doc;
ctxt->insert = (xmlNodePtr) new_doc;
xsltApplyOneTemplate (ctxt, node, inst->children, NULL, NULL);
xsltSaveResultToString (&page_buf, &buf_size, new_doc, style);
ctxt->outputFile = old_outfile;
ctxt->output = old_doc;
ctxt->insert = old_insert;
g_mutex_lock (transform->mutex);
temp = g_strdup ((gchar *) page_id);
xmlFree (page_id);
g_async_queue_push (transform->queue, g_strdup ((gchar *) temp));
g_hash_table_insert (transform->chunks, temp, page_buf);
transform->idle_funcs++;
g_idle_add ((GSourceFunc) transform_chunk, transform);
g_mutex_unlock (transform->mutex);
done:
if (new_doc)
xmlFreeDoc (new_doc);
if (style)
xsltFreeStylesheet (style);
}
