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] <repo> <dir>"
  10        exit 1
  11}
  12
  13get_repo_base() {
  14        (cd "$1" && (cd .git ; pwd)) 2> /dev/null
  15}
  16
  17use_local=no
  18while
  19        case "$#,$1" in
  20        0,*) break ;;
  21        *,-l|*,--l|*,--lo|*,--loc|*,--loca|*,--local) use_local=yes ;;
  22        *,-*) usage ;;
  23        *) break ;;
  24        esac
  25do
  26        shift
  27done
  28
  29# Turn the source into an absolute path if
  30# it is local
  31repo="$1"
  32local=no
  33if base=$(get_repo_base "$repo"); then
  34        repo="$base"
  35        local=yes
  36fi
  37
  38dir="$2"
  39mkdir "$dir" &&
  40D=$(
  41        (cd "$dir" && git-init-db && pwd)
  42) &&
  43test -d "$D" || usage
  44
  45# We do local magic only when the user tells us to.
  46case "$local,$use_local" in
  47yes,yes)
  48        ( cd "$repo/objects" ) || {
  49                repo="$repo/.git"
  50                ( cd "$repo/objects" ) || {
  51                    echo >&2 "-l flag seen but $repo is not local."
  52                    exit 1
  53                }
  54        }
  55
  56        # See if we can hardlink and drop "l" if not.
  57        sample_file=$(cd "$repo" && \
  58                      find objects -type f -print | sed -e 1q)
  59
  60        # objects directory should not be empty since we are cloning!
  61        test -f "$repo/$sample_file" || exit
  62
  63        l=
  64        if ln "$repo/$sample_file" "$D/.git/objects/sample" 2>/dev/null
  65        then
  66                l=l
  67        fi &&
  68        rm -f "$D/.git/objects/sample" &&
  69        cp -r$l "$repo/objects" "$D/.git/" || exit 1
  70
  71        # Make a duplicate of refs and HEAD pointer
  72        HEAD=
  73        if test -f "$repo/HEAD"
  74        then
  75                HEAD=HEAD
  76        fi
  77        tar Ccf "$repo" - refs $HEAD | tar Cxf "$D/.git" - || exit 1
  78        exit 0
  79        ;;
  80esac
  81
  82case "$repo" in
  83rsync://*)
  84        rsync -avz --ignore-existing "$repo/objects/" "$D/.git/objects/" &&
  85        rsync -avz --ignore-existing "$repo/refs/" "$D/.git/refs/"
  86        ;;
  87http://*)
  88        echo "Somebody should add http fetch" >&2
  89        exit 1
  90        ;;
  91*)
  92        cd "$D" && git-clone-pack "$repo"
  93        ;;
  94esac