admin/git-pre-commit

   1 #!/bin/bash
   2 #
   3 # This file is part of the GROMACS molecular simulation package.
   4 #
   5 # Copyright (c) 2013, by the GROMACS development team, led by
   6 # David van der Spoel, Berk Hess, Erik Lindahl, and including many
   7 # others, as listed in the AUTHORS file in the top-level source
   8 # directory and at http://www.gromacs.org.
   9 #
  10 # GROMACS is free software; you can redistribute it and/or
  11 # modify it under the terms of the GNU Lesser General Public License
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  35
  36 # This script is intended as a pre-commit hook that optionally runs all
  37 # changes through uncrustify.  By default, it does nothing.  To enable the
  38 # script after copying it to .git/hooks/pre-commit, you need to set
  39 #   git config hooks.uncrustifymode check
  40 #   git config hooks.uncrustifypath /path/to/uncrustify
  41 # With this configuration, all source files modified in the commit are run
  42 # through uncrustify (see admin/uncrustify.sh for how this set of files is
  43 # determined).  If any file is changed by uncrustify, the names of those files
  44 # are reported and the commit is prevented.
  45 # To disable the hook, you can set
  46 #   git config hooks.uncrustifymode off
  47 #
  48 # The actual work is done by the admin/uncrustify.sh script, which gets
  49 # run with the 'check-index' action.
  50 # See the comments in that script for more information.
  51
  52 if git rev-parse --verify HEAD >/dev/null 2>&1
  53 then
  54         against=HEAD
  55 else
  56         # Initial commit: diff against an empty tree object
  57         against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
  58 fi
  59
  60 # Redirect output to stderr.
  61 exec 1>&2
  62
  63 uncrustify_mode=`git config hooks.uncrustifymode`
  64
  65 if [ -f admin/uncrustify.sh ] && \
  66    [ ! -z "$uncrustify_mode" ] && [ "$uncrustify_mode" != "off" ]
  67 then
  68     uncrustify_path=`git config hooks.uncrustifypath`
  69     if [ -z "$uncrustify_path" ]
  70     then
  71         echo "Please set the path to uncrustify using 'git config hooks.uncrustifypath'."
  72         echo "Note that you need a custom version of uncrustify."
  73         exit 1
  74     fi
  75     export UNCRUSTIFY="$uncrustify_path"
  76     case "$uncrustify_mode" in
  77         check)
  78             admin/uncrustify.sh check-index --rev=$against
  79             stat=$?
  80             if [ $stat -eq 1 ] ; then
  81                 exit 1
  82             elif [ $stat -ne 0 ] ; then
  83                 echo "Source code formatting check failed"
  84                 exit 1
  85             fi
  86             ;;
  87         *)
  88             echo "Unknown uncrustify mode: $uncrustify_mode"
  89             exit 1
  90             ;;
  91     esac
  92 fi