Comments (4)
Thanks for reporting.
The code works for me when I change the first lines to
String contentOld = "<html><body>festive 8</body></html>";
String contentNew = "<html><body>What was your highlight of 8?</body></html>";
Keep in mind that DaisyDiff was created to compare XHTML and that the behaviour
for
other input is undefined.
Does this help you or do you believe DaisyDiff should support plain text?
Original comment by [email protected]
on 17 Feb 2009 at 4:43
- Changed state: WontFix
from daisydiff.
This is not the ideal solution I was looking for. Padding texts with html tags
should
not be mandatory.
Although DaisyDiff was created to compare XHTML, I think it should be extended
to
handle textual inputs too (just a suggestion). A classic case where this can
come in
handy is where you have two different stories to compare and you use this
library
from a custom tag to compare the author, created date, title, summary etc. of
the two
stories.
Original comment by [email protected]
on 17 Feb 2009 at 5:09
from daisydiff.
BTW, I got it to work using the following piece of code.
<code>
String contentOld = "festive 8";
String contentNew = "What was your highlight of 8?";
getDiffForHTMLInput(contentOld, contentNew);
private String getDiffForHTMLInput ( String contentOld, String contentNew )
throws Exception
{
contentOld = contentOld == null ? "" : contentOld;
contentNew = contentNew == null ? "" : contentNew;
StringWriter writer = new StringWriter(contentNew.length() +
contentOld.length());
List styleList = new ArrayList();
styleList.add("/static/js/difftag/css/difftag.css");
SAXTransformerFactory tf = (SAXTransformerFactory)
TransformerFactory.newInstance();
TransformerHandler result = tf.newTransformerHandler();
result.setResult(new StreamResult(writer));
ContentHandler postProcess = result;
Locale locale = Locale.getDefault();
String prefix = "diff";
HtmlCleaner cleaner = new HtmlCleaner();
InputSource oldSource = new InputSource(new
ByteArrayInputStream(contentOld.getBytes("UTF-8")));
InputSource newSource = new InputSource(new
ByteArrayInputStream(contentNew.getBytes("UTF-8")));
DomTreeBuilder oldHandler = new DomTreeBuilder();
cleaner.cleanAndParse(oldSource, oldHandler);
TextNodeComparator leftComparator = new TextNodeComparator(oldHandler,
locale);
DomTreeBuilder newHandler = new DomTreeBuilder();
cleaner.cleanAndParse(newSource, newHandler);
TextNodeComparator rightComparator = new TextNodeComparator(newHandler,
locale);
postProcess.startDocument();
postProcess.startElement("", "diffreport", "diffreport", new
AttributesImpl());
attachStyleSheets(styleList, postProcess);
postProcess.startElement("", "diff", "diff", new AttributesImpl());
HtmlSaxDiffOutput output = new HtmlSaxDiffOutput(postProcess, prefix);
HTMLDiffer differ = new HTMLDiffer(output);
differ.diff(leftComparator, rightComparator);
postProcess.endElement("", "diff", "diff");
postProcess.endElement("", "diffreport", "diffreport");
postProcess.endDocument();
return writer.getBuffer().toString();
}
private void attachStyleSheets ( List styles, ContentHandler handler ) throws
SAXException
{
handler.startElement("", "css", "css", new AttributesImpl());
for (Iterator i = styles.iterator(); i.hasNext(); handler.endElement("",
"link", "link"))
{
String cssLink = (String) i.next();
AttributesImpl attr = new AttributesImpl();
attr.addAttribute("", "href", "href", "CDATA", cssLink);
attr.addAttribute("", "type", "type", "CDATA", "text/css");
attr.addAttribute("", "rel", "rel", "CDATA", "stylesheet");
handler.startElement("", "link", "link", attr);
}
}
</code>
Original comment by [email protected]
on 17 Feb 2009 at 5:12
from daisydiff.
Btw, if you want to diff plain text then I can recommend
http://code.google.com/p/google-diff-match-patch/ . If you have the time I'd be
very
happy to accept patches that add support for plain text.
Valid XML should have a single root element (like <html>) so anything else is
not
valid input and you should indeed wrap your snippets.
Original comment by [email protected]
on 17 Feb 2009 at 5:31
from daisydiff.
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