hg2git.sh

   1 #!/bin/sh
   2
   3 ROOT="`dirname $0`"
   4 REPO=""
   5 MAX="-1"
   6 PFX="hg2git"
   7 SFX_MARKS="marks"
   8 SFX_HEADS="heads"
   9 SFX_STATE="state"
  10 QUIET=""
  11
  12 USAGE="[-m <max>] [--quiet] [<repo>]"
  13 LONG_USAGE="Import hg repository <repo> up to either tip or <max>
  14 If <repo> is omitted, use last hg repository as obtained from state file,
  15 GIT_DIR/$PFX-$SFX_STATE by default."
  16
  17 . git-sh-setup
  18 cd_to_toplevel
  19
  20 while case "$#" in 0) break ;; esac
  21 do
  22   case "$1" in
  23     -m)
  24       shift
  25       MAX="$1"
  26       ;;
  27     --q|--qu|--qui|--quie|--quiet)
  28       QUIET="--quiet"
  29       ;;
  30     -*)
  31       usage
  32       ;;
  33     *)
  34       break
  35       ;;
  36   esac
  37   shift
  38 done
  39
  40 # for convenience: get default repo from state file
  41 if [ "$#" != 1 -a -f "$GIT_DIR/$PFX-$SFX_STATE" ] ; then
  42   REPO="`egrep '^:repo ' "$GIT_DIR/$PFX-$SFX_STATE" | cut -d ' ' -f 2`"
  43   echo "Using last hg repository \"$REPO\""
  44 fi
  45
  46 if [ x"$REPO" = x ] ; then
  47   if [ "$#" != 1 ] ; then
  48     usage
  49     exit 1
  50   else
  51     REPO="$1"
  52   fi
  53 fi
  54
  55 # make sure we have a marks cache
  56 if [ ! -f "$GIT_DIR/$PFX-$SFX_MARKS" ] ; then
  57   touch "$GIT_DIR/$PFX-$SFX_MARKS"
  58 fi
  59
  60 GIT_DIR="$GIT_DIR" python "$ROOT/hg2git.py" \
  61   "$REPO" \
  62   "$MAX" \
  63   "$GIT_DIR/$PFX-$SFX_MARKS" \
  64   "$GIT_DIR/$PFX-$SFX_HEADS" \
  65   "$GIT_DIR/$PFX-$SFX_STATE" \
  66 | git-fast-import $QUIET --export-marks="$GIT_DIR/$PFX-$SFX_MARKS.tmp" \
  67 || die 'Git fast-import failed'
  68
  69 # move recent marks cache out of the way...
  70 if [ -f "$GIT_DIR/$PFX-$SFX_MARKS" ] ; then
  71   mv "$GIT_DIR/$PFX-$SFX_MARKS" "$GIT_DIR/$PFX-$SFX_MARKS.old"
  72 else
  73   touch "$GIT_DIR/$PFX-$SFX_MARKS.old"
  74 fi
  75
  76 # ...to create a new merged one
  77 cat "$GIT_DIR/$PFX-$SFX_MARKS.old" "$GIT_DIR/$PFX-$SFX_MARKS.tmp" \
  78 | uniq > "$GIT_DIR/$PFX-$SFX_MARKS"
  79
  80 # cleanup
  81 rm -rf "$GIT_DIR/$PFX-$SFX_MARKS.old" "$GIT_DIR/$PFX-$SFX_MARKS.tmp"
  82
  83 # save SHA1s of current heads for incremental imports
  84 # and connectivity (plus sanity checking)
  85 for head in `git branch | sed 's#^..##'` ; do
  86   id="`git-rev-parse $head`"
  87   echo ":$head $id"
  88 done > "$GIT_DIR/$PFX-$SFX_HEADS"
  89
  90 # check diff with color:
  91 # ( for i in `find . -type f | grep -v '\.git'` ; do diff -u $i $REPO/$i ; done | cdiff ) | less -r