3 # PRE-REVPROP-CHANGE HOOK
5 # The pre-revprop-change hook is invoked before a revision property
6 # is added, modified or deleted. Subversion runs this hook by invoking
7 # a program (script, executable, binary, etc.) named 'pre-revprop-change'
8 # (for which this file is a template), with the following ordered
11 # [1] REPOS-PATH (the path to this repository)
12 # [2] REVISION (the revision being tweaked)
13 # [3] USER (the username of the person tweaking the property)
14 # [4] PROPNAME (the property being set on the revision)
15 # [5] ACTION (the property is being 'A'dded, 'M'odified, or 'D'eleted)
17 # [STDIN] PROPVAL ** the new property value is passed via STDIN.
19 # If the hook program exits with success, the propchange happens; but
20 # if it exits with failure (non-zero), the propchange doesn't happen.
21 # The hook program can use the 'svnlook' utility to examine the
22 # existing value of the revision property.
24 # WARNING: unlike other hooks, this hook MUST exist for revision
25 # properties to be changed. If the hook does not exist, Subversion
26 # will behave as if the hook were present, but failed. The reason
27 # for this is that revision properties are UNVERSIONED, meaning that
28 # a successful propchange is destructive; the old value is gone
29 # forever. We recommend the hook back up the old value somewhere.
31 # On a Unix system, the normal procedure is to have 'pre-revprop-change'
32 # invoke other programs to do the real work, though it may do the
35 # Note that 'pre-revprop-change' must be executable by the user(s) who will
36 # invoke it (typically the user httpd runs as), and that user must
37 # have filesystem-level permission to access the repository.
39 # On a Windows system, you should name the hook program
40 # 'pre-revprop-change.bat' or 'pre-revprop-change.exe',
41 # but the basic idea is the same.
43 # The hook program typically does not inherit the environment of
44 # its parent process. For example, a common problem is for the
45 # PATH environment variable to not be set to its usual value, so
46 # that subprograms fail to launch unless invoked via absolute path.
47 # If you're having unexpected problems with a hook program, the
48 # culprit may be unusual (or missing) environment variables.
50 # Here is an example hook script, for a Unix /bin/sh interpreter.
51 # For more examples and pre-written hooks, see those in
52 # the Subversion repository at
53 # http://svn.collab.net/repos/svn/trunk/tools/hook-scripts/ and
54 # http://svn.collab.net/repos/svn/trunk/contrib/hook-scripts/
62 if [ "$ACTION" = "M" -a "$PROPNAME" = "svn:log" ]; then exit 0; fi
64 echo "Changing revision properties other than svn:log is prohibited" >&2