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] [-q] [-u <upload-pack>] <repo> <dir>"
  10        exit 1
  11}
  12
  13get_repo_base() {
  14        (cd "$1" && (cd .git ; pwd)) 2> /dev/null
  15}
  16
  17quiet=
  18use_local=no
  19upload_pack=
  20while
  21        case "$#,$1" in
  22        0,*) break ;;
  23        *,-l|*,--l|*,--lo|*,--loc|*,--loca|*,--local) use_local=yes ;;
  24        *,-q|*,--quiet) quiet=-q ;;
  25        1,-u|*,--upload-pack) usage ;;
  26        *,-u|*,--upload-pack)
  27                shift
  28                upload_pack="--exec=$2" ;;
  29        *,-*) usage ;;
  30        *) break ;;
  31        esac
  32do
  33        shift
  34done
  35
  36# Turn the source into an absolute path if
  37# it is local
  38repo="$1"
  39local=no
  40if base=$(get_repo_base "$repo"); then
  41        repo="$base"
  42        local=yes
  43fi
  44
  45dir="$2"
  46mkdir "$dir" &&
  47D=$(
  48        (cd "$dir" && git-init-db && pwd)
  49) &&
  50test -d "$D" || usage
  51
  52# We do local magic only when the user tells us to.
  53case "$local,$use_local" in
  54yes,yes)
  55        ( cd "$repo/objects" ) || {
  56                echo >&2 "-l flag seen but $repo is not local."
  57                exit 1
  58        }
  59
  60        # See if we can hardlink and drop "l" if not.
  61        sample_file=$(cd "$repo" && \
  62                      find objects -type f -print | sed -e 1q)
  63
  64        # objects directory should not be empty since we are cloning!
  65        test -f "$repo/$sample_file" || exit
  66
  67        l=
  68        if ln "$repo/$sample_file" "$D/.git/objects/sample" 2>/dev/null
  69        then
  70                l=l
  71        fi &&
  72        rm -f "$D/.git/objects/sample" &&
  73        cd "$repo" &&
  74        find objects -type f -print |
  75        cpio -puamd$l "$D/.git/" || exit 1
  76
  77        # Make a duplicate of refs and HEAD pointer
  78        HEAD=
  79        if test -f "$repo/HEAD"
  80        then
  81                HEAD=HEAD
  82        fi
  83        tar Ccf "$repo" - refs $HEAD | tar Cxf "$D/.git" - || exit 1
  84        exit 0
  85        ;;
  86esac
  87
  88case "$repo" in
  89rsync://*)
  90        rsync $quiet -avz --ignore-existing "$repo/objects/" "$D/.git/objects/" &&
  91        rsync $quiet -avz --ignore-existing "$repo/refs/" "$D/.git/refs/"
  92        ;;
  93http://*)
  94        echo "Somebody should add http fetch" >&2
  95        exit 1
  96        ;;
  97*)
  98        cd "$D" && case "$upload_pack" in
  99        '') git-clone-pack $quiet "$repo" ;;
 100        *) git-clone-pack $quiet "$upload_pack" "$repo" ;;
 101        esac
 102        ;;
 103esac