hg-reset.sh

   1 #!/bin/sh
   2
   3 # Copyright (c) 2007, 2008 Rocco Rutte <pdmef@gmx.net> and others.
   4 # License: MIT <http://www.opensource.org/licenses/mit-license.php>
   5
   6 ROOT="`dirname $0`"
   7 REPO=""
   8 PFX="hg2git"
   9 SFX_MARKS="marks"
  10 SFX_MAPPING="mapping"
  11 SFX_HEADS="heads"
  12 SFX_STATE="state"
  13 QUIET=""
  14
  15 if [ -z "${PYTHON}" ]; then
  16     # $PYTHON is not set, so we try to find a working python with mercurial:
  17     for python_cmd in python2 python python3; do
  18         if command -v $python_cmd > /dev/null; then
  19             $python_cmd -c 'import mercurial' 2> /dev/null
  20             if [ $? -eq 0 ]; then
  21                 PYTHON=$python_cmd
  22                 break
  23             fi
  24         fi
  25     done
  26 fi
  27 if [ -z "${PYTHON}" ]; then
  28     echo "Could not find a python interpreter with the mercurial module available. " \
  29         "Please use the 'PYTHON'environment variable to specify the interpreter to use."
  30     exit 1
  31 fi
  32
  33 USAGE="[-r <repo>] -R <rev>"
  34 LONG_USAGE="Print SHA1s of latest changes per branch up to <rev> useful
  35 to reset import and restart at <rev>.
  36 If <repo> is omitted, use last hg repository as obtained from state file,
  37 GIT_DIR/$PFX-$SFX_STATE by default.
  38
  39 Options:
  40         -R      Hg revision to reset to
  41         -r      Mercurial repository to use
  42 "
  43
  44 IS_BARE=$(git rev-parse --is-bare-repository) \
  45     || (echo "Could not find git repo" ; exit 1)
  46 if test "z$IS_BARE" != ztrue; then
  47    # This is not a bare repo, cd to the toplevel
  48    TOPLEVEL=$(git rev-parse --show-toplevel) \
  49        || (echo "Could not find git repo toplevel" ; exit 1)
  50    cd $TOPLEVEL || exit 1
  51 fi
  52 GIT_DIR=$(git rev-parse --git-dir) || (echo "Could not find git repo" ; exit 1)
  53
  54 while case "$#" in 0) break ;; esac
  55 do
  56   case "$1" in
  57     -r|--r|--re|--rep|--repo)
  58       shift
  59       REPO="$1"
  60       ;;
  61     -*)
  62       # pass any other options down to hg2git.py
  63       break
  64       ;;
  65     *)
  66       break
  67       ;;
  68   esac
  69   shift
  70 done
  71
  72 # for convenience: get default repo from state file
  73 if [ x"$REPO" = x -a -f "$GIT_DIR/$PFX-$SFX_STATE" ] ; then
  74   REPO="`grep '^:repo ' "$GIT_DIR/$PFX-$SFX_STATE" | cut -d ' ' -f 2`"
  75   echo "Using last hg repository \"$REPO\""
  76 fi
  77
  78 # make sure we have a marks cache
  79 if [ ! -f "$GIT_DIR/$PFX-$SFX_MARKS" ] ; then
  80   touch "$GIT_DIR/$PFX-$SFX_MARKS"
  81 fi
  82
  83 GIT_DIR="$GIT_DIR" $PYTHON "$ROOT/hg-reset.py" \
  84   --repo "$REPO" \
  85   --marks "$GIT_DIR/$PFX-$SFX_MARKS" \
  86   --mapping "$GIT_DIR/$PFX-$SFX_MAPPING" \
  87   --heads "$GIT_DIR/$PFX-$SFX_HEADS" \
  88   --status "$GIT_DIR/$PFX-$SFX_STATE" \
  89   "$@"
  90
  91 exit $?