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 $gitmarks"
  40                 fi
  41                 test -n "$GIT_REMOTE_TESTGIT_SIGNED_TAGS" && echo "signed-tags"
  42                 echo
  43                 ;;
  44         list)
  45                 git for-each-ref --format='? %(refname)' 'refs/heads/'
  46                 head=$(git symbolic-ref HEAD)
  47                 echo "@$head HEAD"
  48                 echo
  49                 ;;
  50         import*)
  51                 # read all import lines
  52                 while true
  53                 do
  54                         ref="${line#* }"
  55                         refs="$refs $ref"
  56                         read line
  57                         test "${line%% *}" != "import" && break
  58                 done
  59
  60                 if test -n "$gitmarks"
  61                 then
  62                         echo "feature import-marks=$gitmarks"
  63                         echo "feature export-marks=$gitmarks"
  64                 fi
  65
  66                 if test -n "$GIT_REMOTE_TESTGIT_FAILURE"
  67                 then
  68                         echo "feature done"
  69                         exit 1
  70                 fi
  71
  72                 echo "feature done"
  73                 git fast-export "${testgitmarks_args[@]}" $refs |
  74                 sed -e "s#refs/heads/#${prefix}/heads/#g"
  75                 echo "done"
  76                 ;;
  77         export)
  78                 if test -n "$GIT_REMOTE_TESTGIT_FAILURE"
  79                 then
  80                         # consume input so fast-export doesn't get SIGPIPE;
  81                         # git would also notice that case, but we want
  82                         # to make sure we are exercising the later
  83                         # error checks
  84                         while read line; do
  85                                 test "done" = "$line" && break
  86                         done
  87                         exit 1
  88                 fi
  89
  90                 before=$(git for-each-ref --format='%(refname) %(objectname)')
  91
  92                 git fast-import "${testgitmarks_args[@]}" --quiet
  93
  94                 after=$(git for-each-ref --format='%(refname) %(objectname)')
  95
  96                 # figure out which refs were updated
  97                 join -e 0 -o '0 1.2 2.2' -a 2 <(echo "$before") <(echo "$after") |
  98                 while read ref a b
  99                 do
 100                         test $a == $b && continue
 101                         echo "ok $ref"
 102                 done
 103
 104                 echo
 105                 ;;
 106         '')
 107                 exit
 108                 ;;
 109         esac
 110 done