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