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 "$1" && (cd .git ; pwd)) 2> /dev/null
  15}
  16
  17quiet=
  18use_local=no
  19while
  20        case "$#,$1" in
  21        0,*) break ;;
  22        *,-l|*,--l|*,--lo|*,--loc|*,--loca|*,--local) use_local=yes ;;
  23        *,-q|*,--quiet) quiet=-q ;;
  24        *,-*) usage ;;
  25        *) break ;;
  26        esac
  27do
  28        shift
  29done
  30
  31# Turn the source into an absolute path if
  32# it is local
  33repo="$1"
  34local=no
  35if base=$(get_repo_base "$repo"); then
  36        repo="$base"
  37        local=yes
  38fi
  39
  40dir="$2"
  41mkdir "$dir" &&
  42D=$(
  43        (cd "$dir" && git-init-db && pwd)
  44) &&
  45test -d "$D" || usage
  46
  47# We do local magic only when the user tells us to.
  48case "$local,$use_local" in
  49yes,yes)
  50        ( cd "$repo/objects" ) || {
  51                echo >&2 "-l flag seen but $repo is not local."
  52                exit 1
  53        }
  54
  55        # See if we can hardlink and drop "l" if not.
  56        sample_file=$(cd "$repo" && \
  57                      find objects -type f -print | sed -e 1q)
  58
  59        # objects directory should not be empty since we are cloning!
  60        test -f "$repo/$sample_file" || exit
  61
  62        l=
  63        if ln "$repo/$sample_file" "$D/.git/objects/sample" 2>/dev/null
  64        then
  65                l=l
  66        fi &&
  67        rm -f "$D/.git/objects/sample" &&
  68        cd "$repo" &&
  69        find objects -type f -print |
  70        cpio -puamd$l "$D/.git/" || exit 1
  71
  72        # Make a duplicate of refs and HEAD pointer
  73        HEAD=
  74        if test -f "$repo/HEAD"
  75        then
  76                HEAD=HEAD
  77        fi
  78        tar Ccf "$repo" - refs $HEAD | tar Cxf "$D/.git" - || exit 1
  79        exit 0
  80        ;;
  81esac
  82
  83case "$repo" in
  84rsync://*)
  85        rsync $quiet -avz --ignore-existing "$repo/objects/" "$D/.git/objects/" &&
  86        rsync $quiet -avz --ignore-existing "$repo/refs/" "$D/.git/refs/"
  87        ;;
  88http://*)
  89        echo "Somebody should add http fetch" >&2
  90        exit 1
  91        ;;
  92*)
  93        cd "$D" && git-clone-pack $quiet "$repo"
  94        ;;
  95esac