[libxml2]Add libxml2 library

libxml2/example/io2.c

@@ -0,0 +1,58 @@
+/**
+ * section: InputOutput
+ * synopsis: Output to char buffer
+ * purpose: Demonstrate the use of xmlDocDumpMemory
+ *          to output document to a character buffer
+ * usage: io2
+ * test: io2 > io2.tmp && diff io2.tmp $(srcdir)/io2.res
+ * author: John Fleck
+ * copy: see Copyright for the status of this software.
+ */
+
+#include <libxml/parser.h>
+
+#if defined(LIBXML_OUTPUT_ENABLED)
+int
+main(void)
+{
+
+    xmlNodePtr n;
+    xmlDocPtr doc;
+    xmlChar *xmlbuff;
+    int buffersize;
+
+    /*
+     * Create the document.
+     */
+    doc = xmlNewDoc(BAD_CAST "1.0");
+    n = xmlNewDocNode(doc, NULL, BAD_CAST "root", NULL);
+    xmlNodeSetContent(n, BAD_CAST "content");
+    xmlDocSetRootElement(doc, n);
+
+    /*
+     * Dump the document to a buffer and print it
+     * for demonstration purposes.
+     */
+    xmlDocDumpFormatMemory(doc, &xmlbuff, &buffersize, 1);
+    printf("%s", (char *) xmlbuff);
+
+    /*
+     * Free associated memory.
+     */
+    xmlFree(xmlbuff);
+    xmlFreeDoc(doc);
+
+    return (0);
+
+}
+#else
+#include <stdio.h>
+
+int
+main(void)
+{
+    fprintf(stderr,
+            "library not configured with output support\n");
+    return (0);
+}
+#endif