Make index file locking code reusable to others.

diff --git a/git-clone.sh b/git-clone.sh
index c013e481d044b3b11155d970f785766bc4c18613..de59904d56155faecedbd7cd4818a741dde43ffd 100755 (executable)
--- a/git-clone.sh
+++ b/git-clone.sh
@@ -9,7 +9,7 @@
 unset CDPATH
 
 usage() {
-       echo >&2 "Usage: $0 [--use-separate-remote] [--reference <reference-repo>] [--bare] [-l [-s]] [-q] [-u <upload-pack>] [--origin <name>] [-n] <repo> [<dir>]"
+       echo >&2 "Usage: $0 [--template=<template_directory>] [--use-separate-remote] [--reference <reference-repo>] [--bare] [-l [-s]] [-q] [-u <upload-pack>] [--origin <name>] [-n] <repo> [<dir>]"
        exit 1
 }
 
@@ -38,12 +38,12 @@ Perhaps git-update-server-info needs to be run there?"
        }
        while read sha1 refname
        do
-               name=`expr "$refname" : 'refs/\(.*\)'` &&
+               name=`expr "z$refname" : 'zrefs/\(.*\)'` &&
                case "$name" in
                *^*)    continue;;
                esac
                if test -n "$use_separate_remote" &&
-                  branch_name=`expr "$name" : 'heads/\(.*\)'`
+                  branch_name=`expr "z$name" : 'zheads/\(.*\)'`
                then
                        tname="remotes/$origin/$branch_name"
                else
@@ -102,6 +102,7 @@ quiet=
 local=no
 use_local=no
 local_shared=no
+unset template
 no_checkout=
 upload_pack=
 bare=
@@ -120,6 +121,11 @@ while
        *,-l|*,--l|*,--lo|*,--loc|*,--loca|*,--local) use_local=yes ;;
         *,-s|*,--s|*,--sh|*,--sha|*,--shar|*,--share|*,--shared) 
           local_shared=yes; use_local=yes ;;
+       1,--template) usage ;;
+       *,--template)
+               shift; template="--template=$1" ;;
+       *,--template=*)
+         template="$1" ;;
        *,-q|*,--quiet) quiet=-q ;;
        *,--use-separate-remote)
                use_separate_remote=t ;;
@@ -199,11 +205,11 @@ dir="$2"
 [ -e "$dir" ] && echo "$dir already exists." && usage
 mkdir -p "$dir" &&
 D=$(cd "$dir" && pwd) &&
-trap 'err=$?; cd ..; rm -r "$D"; exit $err' exit
+trap 'err=$?; cd ..; rm -r "$D"; exit $err' 0
 case "$bare" in
 yes) GIT_DIR="$D" ;;
 *) GIT_DIR="$D/.git" ;;
-esac && export GIT_DIR && git-init-db || usage
+esac && export GIT_DIR && git-init-db ${template+"$template"} || usage
 case "$bare" in
 yes)
        GIT_DIR="$D" ;;
@@ -261,11 +267,7 @@ yes,yes)
            ;;
        yes)
            mkdir -p "$GIT_DIR/objects/info"
-           {
-               test -f "$repo/objects/info/alternates" &&
-               cat "$repo/objects/info/alternates";
-               echo "$repo/objects"
-           } >"$GIT_DIR/objects/info/alternates"
+           echo "$repo/objects" >> "$GIT_DIR/objects/info/alternates"
            ;;
        esac
        git-ls-remote "$repo" >"$GIT_DIR/CLONE_HEAD"
@@ -346,7 +348,7 @@ then
                # new style repository with a symref HEAD).
                # Ideally we should skip the guesswork but for now
                # opt for minimum change.
-               head_sha1=`expr "$head_sha1" : 'ref: refs/heads/\(.*\)'`
+               head_sha1=`expr "z$head_sha1" : 'zref: refs/heads/\(.*\)'`
                head_sha1=`cat "$GIT_DIR/$remote_top/$head_sha1"`
                ;;
        esac
@@ -411,5 +413,5 @@ Pull: refs/heads/$head_points_at:$origin_track" &&
 fi
 rm -f "$GIT_DIR/CLONE_HEAD" "$GIT_DIR/REMOTE_HEAD"
 
-trap - exit
+trap - 0