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 ROOT="`dirname "$0"`"
   7 REPO=""
   8 PFX="hg2git"
   9 SFX_MAPPING="mapping"
  10 SFX_MARKS="marks"
  11 SFX_HEADS="heads"
  12 SFX_STATE="state"
  13 GFI_OPTS=""
  14 PYTHON=${PYTHON:-python}
  15
  16 USAGE="[--quiet] [-r <repo>] [--force] [-m <max>] [-s] [--hgtags] [-A <file>] [-M <name>] [-o <name>] [--hg-hash]"
  17 LONG_USAGE="Import hg repository <repo> up to either tip or <max>
  18 If <repo> is omitted, use last hg repository as obtained from state file,
  19 GIT_DIR/$PFX-$SFX_STATE by default.
  20
  21 Note: The argument order matters.
  22
  23 Options:
  24         --quiet   Passed to git-fast-import(1)
  25         -r <repo> Mercurial repository to import
  26         --force   Ignore validation errors when converting, and pass --force
  27                   to git-fast-import(1)
  28         -m <max>  Maximum revision to import
  29         -s        Enable parsing Signed-off-by lines
  30         --hgtags  Enable exporting .hgtags files
  31         -A <file> Read author map from file
  32                   (Same as in git-svnimport(1) and git-cvsimport(1))
  33         -M <name> Set the default branch name (defaults to 'master')
  34         -o <name> Use <name> as branch namespace to track upstream (eg 'origin')
  35         --hg-hash Annotate commits with the hg hash as git notes in the
  36                   hg namespace.
  37 "
  38 case "$1" in
  39     -h|--help)
  40       echo "usage: $(basename "$0") $USAGE"
  41       echo ""
  42       echo "$LONG_USAGE"
  43       exit 0
  44 esac
  45 . "$(git --exec-path)/git-sh-setup"
  46 cd_to_toplevel
  47
  48 while case "$#" in 0) break ;; esac
  49 do
  50   case "$1" in
  51     -r|--r|--re|--rep|--repo)
  52       shift
  53       REPO="$1"
  54       ;;
  55     --q|--qu|--qui|--quie|--quiet)
  56       GFI_OPTS="$GFI_OPTS --quiet"
  57       ;;
  58     --force)
  59       # pass --force to git-fast-import and hg-fast-export.py
  60       GFI_OPTS="$GFI_OPTS --force"
  61       break
  62       ;;
  63     -*)
  64       # pass any other options down to hg2git.py
  65       break
  66       ;;
  67     *)
  68       break
  69       ;;
  70   esac
  71   shift
  72 done
  73
  74 # for convenience: get default repo from state file
  75 if [ x"$REPO" = x -a -f "$GIT_DIR/$PFX-$SFX_STATE" ] ; then
  76   REPO="`grep '^:repo ' "$GIT_DIR/$PFX-$SFX_STATE" | cut -d ' ' -f 2`"
  77   echo "Using last hg repository \"$REPO\""
  78 fi
  79
  80 if [  -z "$REPO" ]; then
  81     echo "no repo given, use -r flag"
  82     exit 1
  83 fi
  84
  85 # make sure we have a marks cache
  86 if [ ! -f "$GIT_DIR/$PFX-$SFX_MARKS" ] ; then
  87   touch "$GIT_DIR/$PFX-$SFX_MARKS"
  88 fi
  89
  90 # cleanup on exit
  91 trap 'rm -f "$GIT_DIR/$PFX-$SFX_MARKS.old" "$GIT_DIR/$PFX-$SFX_MARKS.tmp"' 0
  92
  93 _err1=
  94 _err2=
  95 exec 3>&1
  96 { read -r _err1 || :; read -r _err2 || :; } <<-EOT
  97 $(
  98   exec 4>&3 3>&1 1>&4 4>&-
  99   {
 100     _e1=0
 101     GIT_DIR="$GIT_DIR" $PYTHON "$ROOT/hg-fast-export.py" \
 102       --repo "$REPO" \
 103       --marks "$GIT_DIR/$PFX-$SFX_MARKS" \
 104       --mapping "$GIT_DIR/$PFX-$SFX_MAPPING" \
 105       --heads "$GIT_DIR/$PFX-$SFX_HEADS" \
 106       --status "$GIT_DIR/$PFX-$SFX_STATE" \
 107       "$@" 3>&- || _e1=$?
 108     echo $_e1 >&3
 109   } | \
 110   {
 111     _e2=0
 112     git fast-import $GFI_OPTS --export-marks="$GIT_DIR/$PFX-$SFX_MARKS.tmp" 3>&- || _e2=$?
 113     echo $_e2 >&3
 114   }
 115 )
 116 EOT
 117 exec 3>&-
 118 [ "$_err1" = 0 -a "$_err2" = 0 ] || exit 1
 119
 120 # move recent marks cache out of the way...
 121 if [ -f "$GIT_DIR/$PFX-$SFX_MARKS" ] ; then
 122   mv "$GIT_DIR/$PFX-$SFX_MARKS" "$GIT_DIR/$PFX-$SFX_MARKS.old"
 123 else
 124   touch "$GIT_DIR/$PFX-$SFX_MARKS.old"
 125 fi
 126
 127 # ...to create a new merged one
 128 cat "$GIT_DIR/$PFX-$SFX_MARKS.old" "$GIT_DIR/$PFX-$SFX_MARKS.tmp" \
 129 | uniq > "$GIT_DIR/$PFX-$SFX_MARKS"
 130
 131 # save SHA1s of current heads for incremental imports
 132 # and connectivity (plus sanity checking)
 133 for head in `git branch | sed 's#^..##'` ; do
 134   id="`git rev-parse $head`"
 135   echo ":$head $id"
 136 done > "$GIT_DIR/$PFX-$SFX_HEADS"
 137
 138 # check diff with color:
 139 # ( for i in `find . -type f | grep -v '\.git'` ; do diff -u $i $REPO/$i ; done | cdiff ) | less -r