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he / hooks / pre-revprop-change.tmpl @ c74fd4aa

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