hg-fast-export.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 set -o pipefail
   7
   8 ROOT="`dirname $0`"
   9 REPO=""
  10 PFX="hg2git"
  11 SFX_MAPPING="mapping"
  12 SFX_MARKS="marks"
  13 SFX_HEADS="heads"
  14 SFX_STATE="state"
  15 GFI_OPTS=""
  16 PYTHON=${PYTHON:-python}
  17
  18 USAGE="[--quiet] [-r <repo>] [--force] [-m <max>] [-s] [-A <file>] [-M <name>] [-o <name>]"
  19 LONG_USAGE="Import hg repository <repo> up to either tip or <max>
  20 If <repo> is omitted, use last hg repository as obtained from state file,
  21 GIT_DIR/$PFX-$SFX_STATE by default.
  22
  23 Note: The argument order matters.
  24
  25 Options:
  26         -m      Maximum revision to import
  27         --quiet Passed to git-fast-import(1)
  28         -s      Enable parsing Signed-off-by lines
  29         -A      Read author map from file
  30                 (Same as in git-svnimport(1) and git-cvsimport(1))
  31         -r      Mercurial repository to import
  32         -M      Set the default branch name (default to 'master')
  33         -o      Use <name> as branch namespace to track upstream (eg 'origin')
  34         --force Ignore validation errors when converting, and pass --force
  35                 to git-fast-import(1)
  36 "
  37
  38 . "$(git --exec-path)/git-sh-setup"
  39 cd_to_toplevel
  40
  41 while case "$#" in 0) break ;; esac
  42 do
  43   case "$1" in
  44     -r|--r|--re|--rep|--repo)
  45       shift
  46       REPO="$1"
  47       ;;
  48     --q|--qu|--qui|--quie|--quiet)
  49       GFI_OPTS="$GFI_OPTS --quiet"
  50       ;;
  51     --force)
  52       # pass --force to git-fast-import and hg-fast-export.py
  53       GFI_OPTS="$GFI_OPTS --force"
  54       break
  55       ;;
  56     -*)
  57       # pass any other options down to hg2git.py
  58       break
  59       ;;
  60     *)
  61       break
  62       ;;
  63   esac
  64   shift
  65 done
  66
  67 # for convenience: get default repo from state file
  68 if [ x"$REPO" = x -a -f "$GIT_DIR/$PFX-$SFX_STATE" ] ; then
  69   REPO="`egrep '^:repo ' "$GIT_DIR/$PFX-$SFX_STATE" | cut -d ' ' -f 2`"
  70   echo "Using last hg repository \"$REPO\""
  71 fi
  72
  73 if [  -z "$REPO" ]; then
  74     echo "no repo given, use -r flag"
  75     exit 1
  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 # cleanup on exit
  84 trap 'rm -f "$GIT_DIR/$PFX-$SFX_MARKS.old" "$GIT_DIR/$PFX-$SFX_MARKS.tmp"' 0
  85
  86 GIT_DIR="$GIT_DIR" $PYTHON "$ROOT/hg-fast-export.py" \
  87   --repo "$REPO" \
  88   --marks "$GIT_DIR/$PFX-$SFX_MARKS" \
  89   --mapping "$GIT_DIR/$PFX-$SFX_MAPPING" \
  90   --heads "$GIT_DIR/$PFX-$SFX_HEADS" \
  91   --status "$GIT_DIR/$PFX-$SFX_STATE" \
  92   "$@" \
  93 | git fast-import $GFI_OPTS --export-marks="$GIT_DIR/$PFX-$SFX_MARKS.tmp" || exit 1
  94
  95 # move recent marks cache out of the way...
  96 if [ -f "$GIT_DIR/$PFX-$SFX_MARKS" ] ; then
  97   mv "$GIT_DIR/$PFX-$SFX_MARKS" "$GIT_DIR/$PFX-$SFX_MARKS.old"
  98 else
  99   touch "$GIT_DIR/$PFX-$SFX_MARKS.old"
 100 fi
 101
 102 # ...to create a new merged one
 103 cat "$GIT_DIR/$PFX-$SFX_MARKS.old" "$GIT_DIR/$PFX-$SFX_MARKS.tmp" \
 104 | uniq > "$GIT_DIR/$PFX-$SFX_MARKS"
 105
 106 # save SHA1s of current heads for incremental imports
 107 # and connectivity (plus sanity checking)
 108 for head in `git branch | sed 's#^..##'` ; do
 109   id="`git rev-parse $head`"
 110   echo ":$head $id"
 111 done > "$GIT_DIR/$PFX-$SFX_HEADS"
 112
 113 # check diff with color:
 114 # ( for i in `find . -type f | grep -v '\.git'` ; do diff -u $i $REPO/$i ; done | cdiff ) | less -r