git-parse-remote.sh

   1 #!/bin/sh
   2
   3 # git-ls-remote could be called from outside a git managed repository;
   4 # this would fail in that case and would issue an error message.
   5 GIT_DIR=$(git rev-parse -q --git-dir) || :;
   6
   7 get_data_source () {
   8         case "$1" in
   9         */*)
  10                 echo ''
  11                 ;;
  12         .)
  13                 echo self
  14                 ;;
  15         *)
  16                 if test "$(git config --get "remote.$1.url")"
  17                 then
  18                         echo config
  19                 elif test -f "$GIT_DIR/remotes/$1"
  20                 then
  21                         echo remotes
  22                 elif test -f "$GIT_DIR/branches/$1"
  23                 then
  24                         echo branches
  25                 else
  26                         echo ''
  27                 fi ;;
  28         esac
  29 }
  30
  31 get_remote_url () {
  32         data_source=$(get_data_source "$1")
  33         case "$data_source" in
  34         '')
  35                 echo "$1"
  36                 ;;
  37         self)
  38                 echo "$1"
  39                 ;;
  40         config)
  41                 git config --get "remote.$1.url"
  42                 ;;
  43         remotes)
  44                 sed -ne '/^URL: */{
  45                         s///p
  46                         q
  47                 }' "$GIT_DIR/remotes/$1"
  48                 ;;
  49         branches)
  50                 sed -e 's/#.*//' "$GIT_DIR/branches/$1"
  51                 ;;
  52         *)
  53                 die "internal error: get-remote-url $1" ;;
  54         esac
  55 }
  56
  57 get_default_remote () {
  58         curr_branch=$(git symbolic-ref -q HEAD | sed -e 's|^refs/heads/||')
  59         origin=$(git config --get "branch.$curr_branch.remote")
  60         echo ${origin:-origin}
  61 }
  62
  63 get_remote_merge_branch () {
  64         case "$#" in
  65         0|1)
  66             origin="$1"
  67             default=$(get_default_remote)
  68             test -z "$origin" && origin=$default
  69             curr_branch=$(git symbolic-ref -q HEAD) &&
  70             [ "$origin" = "$default" ] &&
  71             echo $(git for-each-ref --format='%(upstream)' $curr_branch)
  72             ;;
  73         *)
  74             repo=$1
  75             shift
  76             ref=$1
  77             # FIXME: It should return the tracking branch
  78             #        Currently only works with the default mapping
  79             case "$ref" in
  80             +*)
  81                 ref=$(expr "z$ref" : 'z+\(.*\)')
  82                 ;;
  83             esac
  84             expr "z$ref" : 'z.*:' >/dev/null || ref="${ref}:"
  85             remote=$(expr "z$ref" : 'z\([^:]*\):')
  86             case "$remote" in
  87             '' | HEAD ) remote=HEAD ;;
  88             heads/*) remote=${remote#heads/} ;;
  89             refs/heads/*) remote=${remote#refs/heads/} ;;
  90             refs/* | tags/* | remotes/* ) remote=
  91             esac
  92             [ -n "$remote" ] && case "$repo" in
  93                 .)
  94                     echo "refs/heads/$remote"
  95                     ;;
  96                 *)
  97                     echo "refs/remotes/$repo/$remote"
  98                     ;;
  99             esac
 100         esac
 101 }
 102
 103 error_on_missing_default_upstream () {
 104         cmd="$1"
 105         op_type="$2"
 106         op_prep="$3"
 107         example="$4"
 108         branch_name=$(git symbolic-ref -q HEAD)
 109         if test -z "$branch_name"
 110         then
 111                 echo "You are not currently on a branch, so I cannot use any
 112 'branch.<branchname>.merge' in your configuration file.
 113 Please specify which branch you want to $op_type $op_prep on the command
 114 line and try again (e.g. '$example').
 115 See git-${cmd}(1) for details."
 116         else
 117                 echo "You asked me to $cmd without telling me which branch you
 118 want to $op_type $op_prep, and 'branch.${branch_name#refs/heads/}.merge' in
 119 your configuration file does not tell me, either. Please
 120 specify which branch you want to use on the command line and
 121 try again (e.g. '$example').
 122 See git-${cmd}(1) for details.
 123
 124 If you often $op_type $op_prep the same branch, you may want to
 125 use something like the following in your configuration file:
 126     [branch \"${branch_name#refs/heads/}\"]
 127     remote = <nickname>
 128     merge = <remote-ref>"
 129                 test rebase = "$op_type" &&
 130                 echo "    rebase = true"
 131                 echo "
 132     [remote \"<nickname>\"]
 133     url = <url>
 134     fetch = <refspec>
 135
 136 See git-config(1) for details."
 137         fi
 138         exit 1
 139 }