git-remote-testgit

   1 #!/usr/bin/env bash
   2 # Copyright (c) 2012 Felipe Contreras
   3
   4 alias=$1
   5 url=$2
   6
   7 dir="$GIT_DIR/testgit/$alias"
   8 prefix="refs/testgit/$alias"
   9
  10 default_refspec="refs/heads/*:${prefix}/heads/*"
  11
  12 refspec="${GIT_REMOTE_TESTGIT_REFSPEC-$default_refspec}"
  13
  14 test -z "$refspec" && prefix="refs"
  15
  16 export GIT_DIR="$url/.git"
  17
  18 mkdir -p "$dir"
  19
  20 if test -z "$GIT_REMOTE_TESTGIT_NO_MARKS"
  21 then
  22         gitmarks="$dir/git.marks"
  23         testgitmarks="$dir/testgit.marks"
  24         test -e "$gitmarks" || >"$gitmarks"
  25         test -e "$testgitmarks" || >"$testgitmarks"
  26         testgitmarks_args=( "--"{import,export}"-marks=$testgitmarks" )
  27 fi
  28
  29 while read line
  30 do
  31         case $line in
  32         capabilities)
  33                 echo 'import'
  34                 echo 'export'
  35                 test -n "$refspec" && echo "refspec $refspec"
  36                 if test -n "$gitmarks"
  37                 then
  38                         echo "*import-marks $gitmarks"
  39                         echo "*export-marks $gitmarks"
  40                 fi
  41                 echo
  42                 ;;
  43         list)
  44                 git for-each-ref --format='? %(refname)' 'refs/heads/'
  45                 head=$(git symbolic-ref HEAD)
  46                 echo "@$head HEAD"
  47                 echo
  48                 ;;
  49         import*)
  50                 # read all import lines
  51                 while true
  52                 do
  53                         ref="${line#* }"
  54                         refs="$refs $ref"
  55                         read line
  56                         test "${line%% *}" != "import" && break
  57                 done
  58
  59                 if test -n "$gitmarks"
  60                 then
  61                         echo "feature import-marks=$gitmarks"
  62                         echo "feature export-marks=$gitmarks"
  63                 fi
  64                 echo "feature done"
  65                 git fast-export "${testgitmarks_args[@]}" $refs |
  66                 sed -e "s#refs/heads/#${prefix}/heads/#g"
  67                 echo "done"
  68                 ;;
  69         export)
  70                 before=$(git for-each-ref --format='%(refname) %(objectname)')
  71
  72                 git fast-import "${testgitmarks_args[@]}" --quiet
  73
  74                 after=$(git for-each-ref --format='%(refname) %(objectname)')
  75
  76                 # figure out which refs were updated
  77                 join -e 0 -o '0 1.2 2.2' -a 2 <(echo "$before") <(echo "$after") |
  78                 while read ref a b
  79                 do
  80                         test $a == $b && continue
  81                         echo "ok $ref"
  82                 done
  83
  84                 echo
  85                 ;;
  86         '')
  87                 exit
  88                 ;;
  89         esac
  90 done