[PATCH] Add git-var a tool for reading interesting git variables.

[git.git] / git-clone-script

diff --git a/git-clone-script b/git-clone-script
index 28a9321..88e2c1f 100755 (executable)
--- a/git-clone-script
+++ b/git-clone-script
@@ -1,4 +1,103 @@
 #!/bin/sh
+#
+# Copyright (c) 2005, Linus Torvalds
+# Copyright (c) 2005, Junio C Hamano
+# 
+# Clone a repository into a different directory that does not yet exist.
+
+usage() {
+       echo >&2 "* git clone [-l] [-q] [-u <upload-pack>] <repo> <dir>"
+       exit 1
+}
+
+get_repo_base() {
+       (cd "$1" && (cd .git ; pwd)) 2> /dev/null
+}
+
+quiet=
+use_local=no
+upload_pack=
+while
+       case "$#,$1" in
+       0,*) break ;;
+        *,-l|*,--l|*,--lo|*,--loc|*,--loca|*,--local) use_local=yes ;;
+       *,-q|*,--quiet) quiet=-q ;;
+       1,-u|*,--upload-pack) usage ;;
+       *,-u|*,--upload-pack)
+               shift
+               upload_pack="--exec=$2" ;;
+       *,-*) usage ;;
+       *) break ;;
+       esac
+do
+       shift
+done
+
+# Turn the source into an absolute path if
+# it is local
 repo="$1"
+local=no
+if base=$(get_repo_base "$repo"); then
+       repo="$base"
+       local=yes
+fi
+
 dir="$2"
-mkdir "$dir" && cd "$dir" && git-init-db && git-clone-pack "$repo"
+mkdir "$dir" &&
+D=$(
+       (cd "$dir" && git-init-db && pwd)
+) &&
+test -d "$D" || usage
+
+# We do local magic only when the user tells us to.
+case "$local,$use_local" in
+yes,yes)
+       ( cd "$repo/objects" ) || {
+               echo >&2 "-l flag seen but $repo is not local."
+               exit 1
+       }
+
+       # See if we can hardlink and drop "l" if not.
+       sample_file=$(cd "$repo" && \
+                     find objects -type f -print | sed -e 1q)
+
+       # objects directory should not be empty since we are cloning!
+       test -f "$repo/$sample_file" || exit
+
+       l=
+       if ln "$repo/$sample_file" "$D/.git/objects/sample" 2>/dev/null
+       then
+               l=l
+       fi &&
+       rm -f "$D/.git/objects/sample" &&
+       cd "$repo" &&
+       find objects -type f -print |
+       cpio -puamd$l "$D/.git/" || exit 1
+
+       # Make a duplicate of refs and HEAD pointer
+       HEAD=
+       if test -f "$repo/HEAD"
+       then
+               HEAD=HEAD
+       fi
+       tar Ccf "$repo" - refs $HEAD | tar Cxf "$D/.git" - || exit 1
+       exit 0
+       ;;
+esac
+
+case "$repo" in
+rsync://*)
+       rsync $quiet -avz --ignore-existing "$repo/objects/" "$D/.git/objects/" &&
+       rsync $quiet -avz --ignore-existing "$repo/refs/" "$D/.git/refs/"
+       ;;
+http://*)
+       echo "Somebody should add http fetch" >&2
+       exit 1
+       ;;
+*)
+       cd "$D" && case "$upload_pack" in
+       '') git-clone-pack $quiet "$repo" ;;
+       *) git-clone-pack $quiet "$upload_pack" "$repo" ;;
+       esac
+       ;;
+esac