Andrew's git - gitweb.git/blob

   1#!/bin/sh
   2#
   3# Copyright (c) 2005, Linus Torvalds
   4# Copyright (c) 2005, Junio C Hamano
   5# 
   6# Clone a repository into a different directory that does not yet exist.
   7
   8# See git-sh-setup why.
   9unset CDPATH
  10
  11usage() {
  12        echo >&2 "* git clone [-l [-s]] [-q] [-u <upload-pack>] <repo> <dir>"
  13        exit 1
  14}
  15
  16get_repo_base() {
  17        (cd "$1" && (cd .git ; pwd)) 2> /dev/null
  18}
  19
  20if [ -n "$GIT_SSL_NO_VERIFY" ]; then
  21    curl_extra_args="-k"
  22fi
  23
  24http_fetch () {
  25        # $1 = Remote, $2 = Local
  26        curl -nsf $curl_extra_args "$1" >"$2"
  27}
  28
  29clone_dumb_http () {
  30        # $1 - remote, $2 - local
  31        cd "$2" &&
  32        clone_tmp='.git/clone-tmp' &&
  33        mkdir -p "$clone_tmp" || exit 1
  34        http_fetch "$1/info/refs" "$clone_tmp/refs" &&
  35        http_fetch "$1/objects/info/packs" "$clone_tmp/packs" || {
  36                echo >&2 "Cannot get remote repository information.
  37Perhaps git-update-server-info needs to be run there?"
  38                exit 1;
  39        }
  40        while read type name
  41        do
  42                case "$type" in
  43                P) ;;
  44                *) continue ;;
  45                esac &&
  46
  47                idx=`expr "$name" : '\(.*\)\.pack'`.idx
  48                http_fetch "$1/objects/pack/$name" ".git/objects/pack/$name" &&
  49                http_fetch "$1/objects/pack/$idx" ".git/objects/pack/$idx" &&
  50                git-verify-pack ".git/objects/pack/$idx" || exit 1
  51        done <"$clone_tmp/packs"
  52
  53        while read sha1 refname
  54        do
  55                name=`expr "$refname" : 'refs/\(.*\)'` &&
  56                git-http-fetch -v -a -w "$name" "$name" "$1/" || exit 1
  57        done <"$clone_tmp/refs"
  58        rm -fr "$clone_tmp"
  59}
  60
  61quiet=
  62use_local=no
  63local_shared=no
  64upload_pack=
  65while
  66        case "$#,$1" in
  67        0,*) break ;;
  68        *,-l|*,--l|*,--lo|*,--loc|*,--loca|*,--local) use_local=yes ;;
  69        *,-s|*,--s|*,--sh|*,--sha|*,--shar|*,--share|*,--shared) 
  70          local_shared=yes ;;
  71        *,-q|*,--quiet) quiet=-q ;;
  72        1,-u|1,--upload-pack) usage ;;
  73        *,-u|*,--upload-pack)
  74                shift
  75                upload_pack="--exec=$1" ;;
  76        *,-*) usage ;;
  77        *) break ;;
  78        esac
  79do
  80        shift
  81done
  82
  83# Turn the source into an absolute path if
  84# it is local
  85repo="$1"
  86local=no
  87if base=$(get_repo_base "$repo"); then
  88        repo="$base"
  89        local=yes
  90fi
  91
  92dir="$2"
  93mkdir "$dir" &&
  94D=$(
  95        (cd "$dir" && git-init-db && pwd)
  96) &&
  97test -d "$D" || usage
  98
  99# We do local magic only when the user tells us to.
 100case "$local,$use_local" in
 101yes,yes)
 102        ( cd "$repo/objects" ) || {
 103                echo >&2 "-l flag seen but $repo is not local."
 104                exit 1
 105        }
 106
 107        case "$local_shared" in
 108        no)
 109            # See if we can hardlink and drop "l" if not.
 110            sample_file=$(cd "$repo" && \
 111                          find objects -type f -print | sed -e 1q)
 112
 113            # objects directory should not be empty since we are cloning!
 114            test -f "$repo/$sample_file" || exit
 115
 116            l=
 117            if ln "$repo/$sample_file" "$D/.git/objects/sample" 2>/dev/null
 118            then
 119                    l=l
 120            fi &&
 121            rm -f "$D/.git/objects/sample" &&
 122            cd "$repo" &&
 123            find objects -type f -print |
 124            cpio -puamd$l "$D/.git/" || exit 1
 125            ;;
 126        yes)
 127            mkdir -p "$D/.git/objects/info"
 128            {
 129                test -f "$repo/objects/info/alternates" &&
 130                cat "$repo/objects/info/alternates";
 131                echo "$repo/objects"
 132            } >"$D/.git/objects/info/alternates"
 133            ;;
 134        esac
 135
 136        # Make a duplicate of refs and HEAD pointer
 137        HEAD=
 138        if test -f "$repo/HEAD"
 139        then
 140                HEAD=HEAD
 141        fi
 142        tar Ccf "$repo" - refs $HEAD | tar Cxf "$D/.git" - || exit 1
 143        ;;
 144*)
 145        case "$repo" in
 146        rsync://*)
 147                rsync $quiet -avz --ignore-existing "$repo/objects/" "$D/.git/objects/" &&
 148                rsync $quiet -avz --ignore-existing "$repo/refs/" "$D/.git/refs/"
 149                ;;
 150        http://*)
 151                clone_dumb_http "$repo" "$D"
 152                ;;
 153        *)
 154                cd "$D" && case "$upload_pack" in
 155                '') git-clone-pack $quiet "$repo" ;;
 156                *) git-clone-pack $quiet "$upload_pack" "$repo" ;;
 157                esac
 158                ;;
 159        esac
 160        ;;
 161esac
 162
 163# Update origin.
 164mkdir -p "$D/.git/remotes/" &&
 165rm -f "$D/.git/remotes/origin" &&
 166echo >"$D/.git/remotes/origin" \
 167"URL: $repo
 168Pull: master:origin"