hg2git.sh

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