[LUCENE-85] HTMLParser can't skip to parse some javascript code

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2
• Component/s: modules/examples

Environment

Operating System: other
Platform: PC

• Bugzilla Id: 16952
• Assignee: Lucene Developers
• Reporter: Tommy Cheung
• Created: 11/Feb/03 11:54
• Updated: 28/Aug/22 11:12
• Resolved: 27/May/06 01:36

Description

I found that org/apache/lucene/demo/html/HTMLParser.jj have a bug. I tried to
parse the following HTML content:

<script language="JavaScript">
function preset() {
var art_id=GetParamValue("art_id");
// alert("bbbb"+art_id);
if(isNaN(art_id) || art_id=="")

{ document.dymenu.article_id.selectedIndex=2; // alert("aaaa"); return; }

for(var i=1;i<document.dymenu.article_id.options.length;i++)

{ if(document.dymenu.article_id.options[i].value==art_id) // line 625 break; }

document.dymenu.article_id.selectedIndex=i;
return;
}
preset();
</script></td></tr><tr><td align=right>
++++++++++++++++++++++++++++
it threw an exception:

adding ../projecthand/applenews2.html
Parse Aborted: Lexical error at line 625, column 60. Encountered: "=" (61),
after : ""

++++++++++++++++++++++++++++++

After i added comment tags "<!-" and "//->" inside "<script>...</script>"
tags. it worked again. i think the HTMLParser should skip the javascript code
without comment tags. Also i tried another javascript code block in the same
file just before the above javascript code block and HTMLParser able to skip
but still fail to parse the above javascript code block ....