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