hg2git.sh

   1 #!/bin/sh
   2
   3 ROOT="`dirname $0`"
   4 REPO=""
   5 PFX="hg2git"
   6 SFX_MARKS="marks"
   7 SFX_HEADS="heads"
   8 SFX_STATE="state"
   9 QUIET=""
  10
  11 USAGE="[-m <max>] [--quiet] [-s] [-A <file>] [-r <repo>]"
  12 LONG_USAGE="Import hg repository <repo> up to either tip or <max>
  13 If <repo> is omitted, use last hg repository as obtained from state file,
  14 GIT_DIR/$PFX-$SFX_STATE by default.
  15
  16 Options:
  17         -m      Maximum revision to import
  18         --quiet Passed to git-fast-import(1)
  19         -s      Enable parsing Signed-off-by lines
  20         -A      Read author map from file
  21                 (Same as in git-svnimport(1) and git-cvsimport(1))
  22         -r      Mercurial repository to import
  23 "
  24
  25 . git-sh-setup
  26 cd_to_toplevel
  27
  28 while case "$#" in 0) break ;; esac
  29 do
  30   case "$1" in
  31     -r|--r|--re|--rep|--repo)
  32       shift
  33       REPO="$1"
  34       ;;
  35     --q|--qu|--qui|--quie|--quiet)
  36       QUIET="--quiet"
  37       ;;
  38     -*)
  39       # pass any other options down to hg2git.py
  40       break
  41       ;;
  42     *)
  43       break
  44       ;;
  45   esac
  46   shift
  47 done
  48
  49 # for convenience: get default repo from state file
  50 if [ x"$REPO" = x -a -f "$GIT_DIR/$PFX-$SFX_STATE" ] ; then
  51   REPO="`egrep '^:repo ' "$GIT_DIR/$PFX-$SFX_STATE" | cut -d ' ' -f 2`"
  52   echo "Using last hg repository \"$REPO\""
  53 fi
  54
  55 # make sure we have a marks cache
  56 if [ ! -f "$GIT_DIR/$PFX-$SFX_MARKS" ] ; then
  57   touch "$GIT_DIR/$PFX-$SFX_MARKS"
  58 fi
  59
  60 GIT_DIR="$GIT_DIR" python "$ROOT/hg2git.py" \
  61   --repo "$REPO" \
  62   --marks "$GIT_DIR/$PFX-$SFX_MARKS" \
  63   --heads "$GIT_DIR/$PFX-$SFX_HEADS" \
  64   --status "$GIT_DIR/$PFX-$SFX_STATE" \
  65   "$@" \
  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