From 2fcf1259c6a9c1d70bcdfb96aeabc54c47e2a4a0 Mon Sep 17 00:00:00 2001
From: jhdxr <jhdxr@php.net>
Date: Sat, 28 Jan 2017 14:56:03 +0800
Subject: [PATCH] fixed bug #50989 (DOM support for LIBXML_NOXMLDECL)

---
 NEWS                        |  1 +
 ext/dom/document.c          | 51 ++++++++++++++++---------------------
 ext/dom/tests/bug50989.phpt | 12 +++++++++
 3 files changed, 35 insertions(+), 29 deletions(-)
 create mode 100644 ext/dom/tests/bug50989.phpt

diff --git a/NEWS b/NEWS
index b0566a9ccc..132a7fe677 100644
--- a/NEWS
+++ b/NEWS
@@ -13,6 +13,7 @@ PHP                                                                        NEWS
 - DOM:
   . Fixed bug #54382 (getAttributeNodeNS doesn't get xmlns* attributes).
     (aboks)
+  . Fixed bug #50989 (support for LIBXML_NOXMLDECL). (jhdxr)
 
 - DTrace:
   . Fixed bug #73965 (DTrace reported as enabled when disabled). (Remi)
diff --git a/ext/dom/document.c b/ext/dom/document.c
index cab0aa55ce..c7e4f8e7a5 100644
--- a/ext/dom/document.c
+++ b/ext/dom/document.c
@@ -26,6 +26,7 @@
 #include "php.h"
 #if HAVE_LIBXML && HAVE_DOM
 #include "php_dom.h"
+#include <libxml/xmlsave.h>
 #include <libxml/SAX.h>
 #ifdef LIBXML_SCHEMAS_ENABLED
 #include <libxml/relaxng.h>
@@ -1616,59 +1617,51 @@ PHP_FUNCTION(dom_document_savexml)
 	dom_doc_propsptr doc_props;
 	int size, format, saveempty = 0;
 	zend_long options = 0;
+	xmlSaveCtxtPtr xscp;
 
 	if (zend_parse_method_parameters(ZEND_NUM_ARGS(), getThis(), "O|O!l", &id, dom_document_class_entry, &nodep, dom_node_class_entry, &options) == FAILURE) {
 		return;
 	}
+	options = options | XML_SAVE_AS_XML;
 
 	DOM_GET_OBJ(docp, id, xmlDocPtr, intern);
 
 	doc_props = dom_get_doc_props(intern->document);
 	format = doc_props->formatoutput;
 
+	buf = xmlBufferCreate();
+	if (!buf) {
+		php_error_docref(NULL, E_WARNING, "Could not fetch buffer");
+		RETURN_FALSE;
+	}
+	xscp = xmlSaveToBuffer(buf, docp->encoding, options);
+	
 	if (nodep != NULL) {
 		/* Dump contents of Node */
 		DOM_GET_OBJ(node, nodep, xmlNodePtr, nodeobj);
 		if (node->doc != docp) {
 			php_dom_throw_error(WRONG_DOCUMENT_ERR, dom_get_strict_error(intern->document));
+			xmlBufferFree(buf);
 			RETURN_FALSE;
 		}
-		buf = xmlBufferCreate();
-		if (!buf) {
-			php_error_docref(NULL, E_WARNING, "Could not fetch buffer");
-			RETURN_FALSE;
-		}
-		if (options & LIBXML_SAVE_NOEMPTYTAG) {
-			saveempty = xmlSaveNoEmptyTags;
-			xmlSaveNoEmptyTags = 1;
-		}
-		xmlNodeDump(buf, docp, node, 0, format);
-		if (options & LIBXML_SAVE_NOEMPTYTAG) {
-			xmlSaveNoEmptyTags = saveempty;
-		}
-		mem = (xmlChar*) xmlBufferContent(buf);
-		if (!mem) {
+		if(xmlSaveTree(xscp, node) < 0) {
 			xmlBufferFree(buf);
 			RETURN_FALSE;
 		}
-		RETVAL_STRING((char *) mem);
-		xmlBufferFree(buf);
 	} else {
-		if (options & LIBXML_SAVE_NOEMPTYTAG) {
-			saveempty = xmlSaveNoEmptyTags;
-			xmlSaveNoEmptyTags = 1;
-		}
-		/* Encoding is handled from the encoding property set on the document */
-		xmlDocDumpFormatMemory(docp, &mem, &size, format);
-		if (options & LIBXML_SAVE_NOEMPTYTAG) {
-			xmlSaveNoEmptyTags = saveempty;
-		}
-		if (!size || !mem) {
+		if(xmlSaveDoc(xscp, docp) < 0) {
+			xmlBufferFree(buf);
 			RETURN_FALSE;
 		}
-		RETVAL_STRINGL((char *) mem, size);
-		xmlFree(mem);
 	}
+	xmlSaveClose(xscp);
+	mem = (xmlChar*) xmlBufferContent(buf);
+	if (!mem) {
+		xmlBufferFree(buf);
+		RETURN_FALSE;
+	}
+	RETVAL_STRING((char *) mem);
+	xmlBufferFree(buf);
 }
 /* }}} end dom_document_savexml */
 
diff --git a/ext/dom/tests/bug50989.phpt b/ext/dom/tests/bug50989.phpt
new file mode 100644
index 0000000000..1ef554ac3e
--- /dev/null
+++ b/ext/dom/tests/bug50989.phpt
@@ -0,0 +1,12 @@
+--TEST--
+Bug #50989  add support LIBXML_NOXMLDECL  for DOMDocument::saveXML()
+--SKIPIF--
+<?php require_once('skipif.inc'); ?>
+--FILE--
+<?php
+$dom = new DomDocument();
+$dom->loadXML("<foo />");
+
+print $dom->saveXML(null,LIBXML_NOXMLDECL);
+--EXPECT--
+<foo/>
\ No newline at end of file
-- 
2.50.0