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copied!<p>When writing svn hooks of any type, if you need information about the repository or about a transaction, you want to use the <code>svnlook</code> program from a shell script, or use the svn API in the language of your choice. Using <code>svnlook</code> is faster, as it bypasses all the svn RA (remote access) code, including the layer of authorization checks - because the scripts are being run in the context of the server, this isn't a problem. Additionally, you don't have the additional overhead of updating a working copy that you aren't using for, well, anything other than file type information.</p> <p><code>svnlook</code> contains numerous options for investigating both revisions (for post-* hooks) and transactions (for pre-* transactions). Of particular interest here is the <code>changed</code> option.</p> <pre><blockquote>changed: usage: svnlook changed REPOS_PATH Print the paths that were changed. Valid options: -r [--revision] ARG : specify revision number ARG -t [--transaction] ARG : specify transaction name ARG --copy-info : show details for copies </blockquote></pre> <p>The changes that made up the revision or transaction are displayed, like so:</p> <pre><code>A trunk/src/new-dir/ A trunk/src/new-dir/newheader.h A trunk/src/new-dir/newsrc.c U trunk/src/existingsrc.c </code></pre> <p>Output from svnlook, when referencing a directory, always ends in /. This is an easy discriminator for detection of file or directory.</p> <p>However, things do get a little murkier when dealing with deletes. If a directory is deleted, everything under the directory is also removed and this information isn't displayed in <code>changed</code>. See here:</p> <pre><code>D trunk/src/new-dir/ U trunk/src/existingsrc.c </code></pre> <p>Based on the description of what you are looking at, I'm going to guess that you are looking for some form of post-commit reporting. If so, you may want to check out <a href="http://svn.apache.org/repos/asf/subversion/trunk/tools/hook-scripts/mailer/" rel="nofollow">the subversion mailer post-* hook</a>. Even if you don't want to email results, the code demonstrates how to walk through a transaction or revision for changes using the svn API.</p>

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