[libxml2]Add libxml2 library

libxml2/example/parse2.c

@@ -0,0 +1,64 @@
+/**
+ * section: Parsing
+ * synopsis: Parse and validate an XML file to a tree and free the result
+ * purpose: Create a parser context for an XML file, then parse and validate
+ *          the file, creating a tree, check the validation result
+ *          and xmlFreeDoc() to free the resulting tree.
+ * usage: parse2 test2.xml
+ * test: parse2 test2.xml
+ * author: Daniel Veillard
+ * copy: see Copyright for the status of this software.
+ */
+
+#include <stdio.h>
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+
+/**
+ * exampleFunc:
+ * @filename: a filename or an URL
+ *
+ * Parse and validate the resource and free the resulting tree
+ */
+static void
+exampleFunc(const char *filename) {
+    xmlParserCtxtPtr ctxt; /* the parser context */
+    xmlDocPtr doc; /* the resulting document tree */
+
+    /* create a parser context */
+    ctxt = xmlNewParserCtxt();
+    if (ctxt == NULL) {
+        fprintf(stderr, "Failed to allocate parser context\n");
+	return;
+    }
+    /* parse the file, activating the DTD validation option */
+    doc = xmlCtxtReadFile(ctxt, filename, NULL, XML_PARSE_DTDVALID);
+    /* check if parsing succeeded */
+    if (doc == NULL) {
+        fprintf(stderr, "Failed to parse %s\n", filename);
+    } else {
+	/* check if validation succeeded */
+        if (ctxt->valid == 0)
+	    fprintf(stderr, "Failed to validate %s\n", filename);
+	/* free up the resulting document */
+	xmlFreeDoc(doc);
+    }
+    /* free up the parser context */
+    xmlFreeParserCtxt(ctxt);
+}
+
+int main(int argc, char **argv) {
+    if (argc != 2)
+        return(1);
+
+    /*
+     * this initialize the library and check potential ABI mismatches
+     * between the version it was compiled for and the actual shared
+     * library used.
+     */
+    LIBXML_TEST_VERSION
+
+    exampleFunc(argv[1]);
+
+    return(0);
+}