Andrew's git - gitweb.git/blob - 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.
   5GIT_DIR=$(git-rev-parse --git-dir 2>/dev/null) || :;
   6
   7get_data_source () {
   8        case "$1" in
   9        */*)
  10                # Not so fast.  This could be the partial URL shorthand...
  11                token=$(expr "z$1" : 'z\([^/]*\)/')
  12                remainder=$(expr "z$1" : 'z[^/]*/\(.*\)')
  13                if test "$(git-repo-config --get "remote.$token.url")"
  14                then
  15                        echo config-partial
  16                elif test -f "$GIT_DIR/branches/$token"
  17                then
  18                        echo branches-partial
  19                else
  20                        echo ''
  21                fi
  22                ;;
  23        *)
  24                if test "$(git-repo-config --get "remote.$1.url")"
  25                then
  26                        echo config
  27                elif test -f "$GIT_DIR/remotes/$1"
  28                then
  29                        echo remotes
  30                elif test -f "$GIT_DIR/branches/$1"
  31                then
  32                        echo branches
  33                else
  34                        echo ''
  35                fi ;;
  36        esac
  37}
  38
  39get_remote_url () {
  40        data_source=$(get_data_source "$1")
  41        case "$data_source" in
  42        '')
  43                echo "$1" ;;
  44        config-partial)
  45                token=$(expr "z$1" : 'z\([^/]*\)/')
  46                remainder=$(expr "z$1" : 'z[^/]*/\(.*\)')
  47                url=$(git-repo-config --get "remote.$token.url")
  48                echo "$url/$remainder"
  49                ;;
  50        config)
  51                git-repo-config --get "remote.$1.url"
  52                ;;
  53        remotes)
  54                sed -ne '/^URL: */{
  55                        s///p
  56                        q
  57                }' "$GIT_DIR/remotes/$1" ;;
  58        branches)
  59                sed -e 's/#.*//' "$GIT_DIR/branches/$1" ;;
  60        branches-partial)
  61                token=$(expr "z$1" : 'z\([^/]*\)/')
  62                remainder=$(expr "z$1" : 'z[^/]*/\(.*\)')
  63                url=$(sed -e 's/#.*//' "$GIT_DIR/branches/$token")
  64                echo "$url/$remainder"
  65                ;;
  66        *)
  67                die "internal error: get-remote-url $1" ;;
  68        esac
  69}
  70
  71get_default_remote () {
  72        curr_branch=$(git-symbolic-ref HEAD | sed -e 's|^refs/heads/||')
  73        origin=$(git-repo-config --get "branch.$curr_branch.remote")
  74        echo ${origin:-origin}
  75}
  76
  77get_remote_default_refs_for_push () {
  78        data_source=$(get_data_source "$1")
  79        case "$data_source" in
  80        '' | config-partial | branches | branches-partial)
  81                ;; # no default push mapping, just send matching refs.
  82        config)
  83                git-repo-config --get-all "remote.$1.push" ;;
  84        remotes)
  85                sed -ne '/^Push: */{
  86                        s///p
  87                }' "$GIT_DIR/remotes/$1" ;;
  88        *)
  89                die "internal error: get-remote-default-ref-for-push $1" ;;
  90        esac
  91}
  92
  93# Called from canon_refs_list_for_fetch -d "$remote", which
  94# is called from get_remote_default_refs_for_fetch to grok
  95# refspecs that are retrieved from the configuration, but not
  96# from get_remote_refs_for_fetch when it deals with refspecs
  97# supplied on the command line.  $ls_remote_result has the list
  98# of refs available at remote.
  99expand_refs_wildcard () {
 100        for ref
 101        do
 102                # a non glob pattern is given back as-is.
 103                expr "z$ref" : 'zrefs/.*/\*:refs/.*/\*$' >/dev/null || {
 104                        echo "$ref"
 105                        continue
 106                }
 107                from=`expr "z$ref" : 'z\(refs/.*/\)\*:refs/.*/\*$'`
 108                to=`expr "z$ref" : 'zrefs/.*/\*:\(refs/.*/\)\*$'`
 109                echo "$ls_remote_result" |
 110                (
 111                        IFS='   '
 112                        while read sha1 name
 113                        do
 114                                mapped=${name#"$from"}
 115                                if test "z$name" != "z${name#'^{}'}" ||
 116                                        test "z$name" = "z$mapped"
 117                                then
 118                                        continue
 119                                fi
 120                                echo "${name}:${to}${mapped}"
 121                        done
 122                )
 123        done
 124}
 125
 126# Subroutine to canonicalize remote:local notation.
 127canon_refs_list_for_fetch () {
 128        # If called from get_remote_default_refs_for_fetch
 129        # leave the branches in branch.${curr_branch}.merge alone,
 130        # or the first one otherwise; add prefix . to the rest
 131        # to prevent the secondary branches to be merged by default.
 132        merge_branches=
 133        if test "$1" = "-d"
 134        then
 135                shift ; remote="$1" ; shift
 136                if test "$remote" = "$(get_default_remote)"
 137                then
 138                        curr_branch=$(git-symbolic-ref HEAD | \
 139                            sed -e 's|^refs/heads/||')
 140                        merge_branches=$(git-repo-config \
 141                            --get-all "branch.${curr_branch}.merge")
 142                fi
 143                set x $(expand_refs_wildcard "$@")
 144                shift
 145        fi
 146        for ref
 147        do
 148                force=
 149                case "$ref" in
 150                +*)
 151                        ref=$(expr "z$ref" : 'z+\(.*\)')
 152                        force=+
 153                        ;;
 154                esac
 155                expr "z$ref" : 'z.*:' >/dev/null || ref="${ref}:"
 156                remote=$(expr "z$ref" : 'z\([^:]*\):')
 157                local=$(expr "z$ref" : 'z[^:]*:\(.*\)')
 158                dot_prefix=.
 159                if test -z "$merge_branches"
 160                then
 161                        merge_branches=$remote
 162                        dot_prefix=
 163                else
 164                        for merge_branch in $merge_branches
 165                        do
 166                            [ "$remote" = "$merge_branch" ] &&
 167                            dot_prefix= && break
 168                        done
 169                fi
 170                case "$remote" in
 171                '') remote=HEAD ;;
 172                refs/heads/* | refs/tags/* | refs/remotes/*) ;;
 173                heads/* | tags/* | remotes/* ) remote="refs/$remote" ;;
 174                *) remote="refs/heads/$remote" ;;
 175                esac
 176                case "$local" in
 177                '') local= ;;
 178                refs/heads/* | refs/tags/* | refs/remotes/*) ;;
 179                heads/* | tags/* | remotes/* ) local="refs/$local" ;;
 180                *) local="refs/heads/$local" ;;
 181                esac
 182
 183                if local_ref_name=$(expr "z$local" : 'zrefs/\(.*\)')
 184                then
 185                   git-check-ref-format "$local_ref_name" ||
 186                   die "* refusing to create funny ref '$local_ref_name' locally"
 187                fi
 188                echo "${dot_prefix}${force}${remote}:${local}"
 189        done
 190}
 191
 192# Returns list of src: (no store), or src:dst (store)
 193get_remote_default_refs_for_fetch () {
 194        data_source=$(get_data_source "$1")
 195        case "$data_source" in
 196        '' | config-partial | branches-partial)
 197                echo "HEAD:" ;;
 198        config)
 199                canon_refs_list_for_fetch -d "$1" \
 200                        $(git-repo-config --get-all "remote.$1.fetch") ;;
 201        branches)
 202                remote_branch=$(sed -ne '/#/s/.*#//p' "$GIT_DIR/branches/$1")
 203                case "$remote_branch" in '') remote_branch=master ;; esac
 204                echo "refs/heads/${remote_branch}:refs/heads/$1"
 205                ;;
 206        remotes)
 207                canon_refs_list_for_fetch -d "$1" $(sed -ne '/^Pull: */{
 208                                                s///p
 209                                        }' "$GIT_DIR/remotes/$1")
 210                ;;
 211        *)
 212                die "internal error: get-remote-default-ref-for-push $1" ;;
 213        esac
 214}
 215
 216get_remote_refs_for_push () {
 217        case "$#" in
 218        0) die "internal error: get-remote-refs-for-push." ;;
 219        1) get_remote_default_refs_for_push "$@" ;;
 220        *) shift; echo "$@" ;;
 221        esac
 222}
 223
 224get_remote_refs_for_fetch () {
 225        case "$#" in
 226        0)
 227            die "internal error: get-remote-refs-for-fetch." ;;
 228        1)
 229            get_remote_default_refs_for_fetch "$@" ;;
 230        *)
 231            shift
 232            tag_just_seen=
 233            for ref
 234            do
 235                if test "$tag_just_seen"
 236                then
 237                    echo "refs/tags/${ref}:refs/tags/${ref}"
 238                    tag_just_seen=
 239                    continue
 240                else
 241                    case "$ref" in
 242                    tag)
 243                        tag_just_seen=yes
 244                        continue
 245                        ;;
 246                    esac
 247                fi
 248                canon_refs_list_for_fetch "$ref"
 249            done
 250            ;;
 251        esac
 252}
 253
 254resolve_alternates () {
 255        # original URL (xxx.git)
 256        top_=`expr "z$1" : 'z\([^:]*:/*[^/]*\)/'`
 257        while read path
 258        do
 259                case "$path" in
 260                \#* | '')
 261                        continue ;;
 262                /*)
 263                        echo "$top_$path/" ;;
 264                ../*)
 265                        # relative -- ugly but seems to work.
 266                        echo "$1/objects/$path/" ;;
 267                *)
 268                        # exit code may not be caught by the reader.
 269                        echo "bad alternate: $path"
 270                        exit 1 ;;
 271                esac
 272        done
 273}