hg2git.sh

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