Subversion Input Filters

Subversion allows filtering of files that are commited allowing to verfiy validity of certain things. This can be used to do the commit checks for tabs, new-lines, ...

To enable this feature, create a file:

/path/to/subversion/tree/hooks/pre-commit

There should already be already directory hooks with several files in them.

I used python to write a pre-commit hook, but in general you can use anything.

In the script, the first argument is repository (REPOS) and the second number is a transaction number (TXN). With these two arguments, you can call command svnlook. For example:

 svnlook command -t "TXN" "REPOS" args

Some commands are:

• log - Get log information (this is comment given when doing commit)
• author - Get author information
• changed - List of files that were changed
• dirs-changed - List of directories that changed
• date - Time of commit
• diff - List of changes in diff format
• info - Get all the information about the commit (but diff)
• cat - Display the file after the change
• history - Display the history
• tree - Display the tree hierarchy