From f435981d901ed9d592ef73fabc109ec4f846022a Mon Sep 17 00:00:00 2001
From: Mike Dalessio <mike.dalessio@gmail.com>
Date: Wed, 30 Sep 2015 12:20:04 -0400
Subject: [PATCH] WIP for properly tracking line numbers in JRuby.

Related to #1223.
---
 .../nokogiri/internals/NokogiriDomParser.java | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/ext/java/nokogiri/internals/NokogiriDomParser.java b/ext/java/nokogiri/internals/NokogiriDomParser.java
index cefae5e4b5..550ab9330b 100644
--- a/ext/java/nokogiri/internals/NokogiriDomParser.java
+++ b/ext/java/nokogiri/internals/NokogiriDomParser.java
@@ -39,6 +39,12 @@
 import org.apache.xerces.parsers.DOMParser;
 import org.apache.xerces.parsers.XIncludeParserConfiguration;
 import org.apache.xerces.xni.parser.XMLParserConfiguration;
+import org.apache.xerces.xni.XMLLocator;
+import org.apache.xerces.xni.NamespaceContext;
+import org.apache.xerces.xni.Augmentations;
+import org.apache.xerces.xni.QName;
+import org.apache.xerces.xni.XMLAttributes;
+import org.apache.xerces.xni.Augmentations;
 import org.cyberneko.dtd.DTDConfiguration;
 import org.w3c.dom.Document;
 import org.xml.sax.Attributes;
@@ -57,6 +63,7 @@ public class NokogiriDomParser extends DOMParser {
     protected DOMParser dtd;
     protected boolean xInclude;
     protected XMLParserConfiguration config;
+    protected XMLLocator locator;
 
     public NokogiriDomParser(XMLParserConfiguration config) {
         super(config);
@@ -113,4 +120,21 @@ public InputSource resolveEntity(String publicId, String systemId)
             return source;
         }
     }
+
+    @Override
+    public void startDocument(XMLLocator locator,
+                              String encoding,
+                              NamespaceContext namespaceContext,
+                              Augmentations augs) {
+        this.locator = locator;
+        super.startDocument(locator, encoding, namespaceContext, augs);
+    }
+
+    @Override
+    public void startElement(QName element,
+                             XMLAttributes attributes,
+                             Augmentations augs) {
+        System.out.println(element + ": " + locator.getLineNumber());
+        super.startElement(element, attributes, augs);
+    }
 }