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>]"
  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 "
  36 case "$1" in
  37     -h|--help)
  38       echo "usage: $(basename "$0") $USAGE"
  39       echo ""
  40       echo "$LONG_USAGE"
  41       exit 0
  42 esac
  43 . "$(git --exec-path)/git-sh-setup"
  44 cd_to_toplevel
  45
  46 while case "$#" in 0) break ;; esac
  47 do
  48   case "$1" in
  49     -r|--r|--re|--rep|--repo)
  50       shift
  51       REPO="$1"
  52       ;;
  53     --q|--qu|--qui|--quie|--quiet)
  54       GFI_OPTS="$GFI_OPTS --quiet"
  55       ;;
  56     --force)
  57       # pass --force to git-fast-import and hg-fast-export.py
  58       GFI_OPTS="$GFI_OPTS --force"
  59       break
  60       ;;
  61     -*)
  62       # pass any other options down to hg2git.py
  63       break
  64       ;;
  65     *)
  66       break
  67       ;;
  68   esac
  69   shift
  70 done
  71
  72 # for convenience: get default repo from state file
  73 if [ x"$REPO" = x -a -f "$GIT_DIR/$PFX-$SFX_STATE" ] ; then
  74   REPO="`grep '^:repo ' "$GIT_DIR/$PFX-$SFX_STATE" | cut -d ' ' -f 2`"
  75   echo "Using last hg repository \"$REPO\""
  76 fi
  77
  78 if [  -z "$REPO" ]; then
  79     echo "no repo given, use -r flag"
  80     exit 1
  81 fi
  82
  83 # make sure we have a marks cache
  84 if [ ! -f "$GIT_DIR/$PFX-$SFX_MARKS" ] ; then
  85   touch "$GIT_DIR/$PFX-$SFX_MARKS"
  86 fi
  87
  88 # cleanup on exit
  89 trap 'rm -f "$GIT_DIR/$PFX-$SFX_MARKS.old" "$GIT_DIR/$PFX-$SFX_MARKS.tmp"' 0
  90
  91 _err1=
  92 _err2=
  93 exec 3>&1
  94 { read -r _err1 || :; read -r _err2 || :; } <<-EOT
  95 $(
  96   exec 4>&3 3>&1 1>&4 4>&-
  97   {
  98     _e1=0
  99     GIT_DIR="$GIT_DIR" $PYTHON "$ROOT/hg-fast-export.py" \
 100       --repo "$REPO" \
 101       --marks "$GIT_DIR/$PFX-$SFX_MARKS" \
 102       --mapping "$GIT_DIR/$PFX-$SFX_MAPPING" \
 103       --heads "$GIT_DIR/$PFX-$SFX_HEADS" \
 104       --status "$GIT_DIR/$PFX-$SFX_STATE" \
 105       "$@" 3>&- || _e1=$?
 106     echo $_e1 >&3
 107   } | \
 108   {
 109     _e2=0
 110     git fast-import $GFI_OPTS --export-marks="$GIT_DIR/$PFX-$SFX_MARKS.tmp" 3>&- || _e2=$?
 111     echo $_e2 >&3
 112   }
 113 )
 114 EOT
 115 exec 3>&-
 116 [ "$_err1" = 0 -a "$_err2" = 0 ] || exit 1
 117
 118 # move recent marks cache out of the way...
 119 if [ -f "$GIT_DIR/$PFX-$SFX_MARKS" ] ; then
 120   mv "$GIT_DIR/$PFX-$SFX_MARKS" "$GIT_DIR/$PFX-$SFX_MARKS.old"
 121 else
 122   touch "$GIT_DIR/$PFX-$SFX_MARKS.old"
 123 fi
 124
 125 # ...to create a new merged one
 126 cat "$GIT_DIR/$PFX-$SFX_MARKS.old" "$GIT_DIR/$PFX-$SFX_MARKS.tmp" \
 127 | uniq > "$GIT_DIR/$PFX-$SFX_MARKS"
 128
 129 # save SHA1s of current heads for incremental imports
 130 # and connectivity (plus sanity checking)
 131 for head in `git branch | sed 's#^..##'` ; do
 132   id="`git rev-parse $head`"
 133   echo ":$head $id"
 134 done > "$GIT_DIR/$PFX-$SFX_HEADS"
 135
 136 # check diff with color:
 137 # ( for i in `find . -type f | grep -v '\.git'` ; do diff -u $i $REPO/$i ; done | cdiff ) | less -r