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