[ http://issues.apache.org/jira/browse/FOR-265?page=all ]
Johannes Schaefer updated FOR-265:
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Attachment: xml-diff-markup.png
There is an extensive body of research about xml-diff, some of them may be
found on scholar.google.com (e.g. http://tinyurl.com/qdhwe,
http://tinyurl.com/mhtcm, http://tinyurl.com/oorj8, http://tinyurl.com/q2v65).
The most useful one although dates back to 2002/2004 and was written by N.
Walsh (GPL):
http://nwalsh.com/java/diffmk/index.html,
http://sourceforge.net/projects/diffmk/
Since documentation is missing it took some time to make it work:
Adapt the configuration file diffmk.xml: remove the xmlns="" namespace
declaration from the <doctype> tag and use the follwing command line:
$java -jar diffmk.jar --conf diffmk.xml --doctype docbook howto1.xml
howto2.xml diff.xml
I'm still exploring how the config file and final markup of changed elements
really works, but since we work with docbook (plugin) I got some forrest output
with changes marked up, see screenshot. (I copied part of the docbook-xsl to
the plugin)
The neccessary extra-css is simple:
.changed {border-left:5px solid red; }
.added {border-left:5px solid green;}
Will continue investigating (as time permitts).
> visualize diffs between versions of documents
> ---------------------------------------------
>
> Key: FOR-265
> URL: http://issues.apache.org/jira/browse/FOR-265
> Project: Forrest
> Type: New Feature
> Components: Core operations
> Environment: all
> Reporter: Johannes Schaefer
> Attachments: xml-diff-markup.png
>
> Forrest may be compared with MS Word that offers the feature to trace
> changes, add comments etc. of various authors.
> How about:
> If there is a file myfile.diff for any myfile.xml:
> Can't forrest render the differences?
> Could look like: Original version in blue font, changes in red, green, ...
> (or sth like this).
> User's then could safely change the documentation, get the diff for a former
> version (using svn, RCS, SourceSave, whatever) and afterwards review the
> changes made (maybe with some external customer).
> There should be an option switch to turn this feature on.
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