[gst-devel] formatted xml convenience routine

[Andy Wingo]

this is a temporary convenience workaround for libxml2's insistence on
not indenting. ok to commit?

Index: gstxml.c
===================================================================
RCS file: /cvsroot/gstreamer/gstreamer/gst/gstxml.c,v
retrieving revision 1.24
diff -u -r1.24 gstxml.c
--- gstxml.c	2001/12/14 22:59:21	1.24
+++ gstxml.c	2002/01/10 06:23:18
@@ -126,6 +126,54 @@
 }
 
 /**
+ * gst_xml_write:
+ * @element: The element to write out
+ * @out: an open file, like stdout
+ *
+ * Converts the given element into XML and writes the formatted XML to an open
+ * file.
+ *
+ * Returns: TRUE on success, FALSE otherwise.
+ */
+gboolean
+gst_xml_dump (GstElement *element, FILE *out)
+{
+  xmlDocPtr cur;
+  xmlOutputBufferPtr buf;
+  const char * encoding;
+  xmlCharEncodingHandlerPtr handler = NULL;
+  int ret;
+  
+  cur = gst_xml_write (element);
+  if (!cur) return FALSE;
+  
+  encoding = (const char *) cur->encoding;
+  
+  if (encoding != NULL) {
+    xmlCharEncoding enc;
+    
+    enc = xmlParseCharEncoding (encoding);
+    
+    if (cur->charset != XML_CHAR_ENCODING_UTF8) {
+      xmlGenericError (xmlGenericErrorContext,
+                       "xmlDocDump: document not in UTF8\n");
+      return FALSE;
+    }
+    if (enc != XML_CHAR_ENCODING_UTF8) {
+      handler = xmlFindCharEncodingHandler (encoding);
+      if (handler == NULL) {
+        xmlFree ((char *) cur->encoding);
+        cur->encoding = NULL;
+      }
+    }
+  }
+  
+  buf = xmlOutputBufferCreateFile (out, handler);
+  
+  return (xmlSaveFormatFileTo(buf, cur, NULL, 1) == 0);
+}
+
+/**
  * gst_xml_parse_doc:
  * @xml: a pointer to a GstXML object
  * @doc: a pointer to an xml document to parse
Index: gstxml.h
===================================================================
RCS file: /cvsroot/gstreamer/gstreamer/gst/gstxml.h,v
retrieving revision 1.17
diff -u -r1.17 gstxml.h
--- gstxml.h	2001/12/15 18:15:13	1.17
+++ gstxml.h	2002/01/10 06:23:18
@@ -69,6 +69,9 @@
 /* create an XML document out of a pipeline */
 xmlDocPtr	gst_xml_write		(GstElement *element);
 
+/* dump a formatted representation of a pipeline to an open file */
+gboolean	gst_xml_dump		(GstElement *element, FILE *out);
+
 GstXML*		gst_xml_new		(void);
 
 gboolean	gst_xml_parse_doc	(GstXML *xml, xmlDocPtr doc, const guchar *root);