#!/bin/sh

USAGE='[commit]'
LONG_USAGE='git show-url prints a gitweb url for a given commit (or HEAD
if no commit is given).  You must first configure the gitweb baseurl for
the repository.  You can do so using git config, e.g.:

  $ git config gitweb.baseurl "http://yum.baseurl.org/gitweb?p=yum.git"

or by editing the git config file directly:

  [gitweb]
  	baseurl = http://yum.baseurl.org/gitweb?p=yum.git
'

SUBDIRECTORY_OK=Yes
OPTIONS_SPEC=

. git-sh-setup

[ $# -gt 1 ] && usage

baseurl="$(git config --get gitweb.baseurl)"
[ -n "$baseurl" ] || die "Set gitweb.baseurl in git config"

commit=$1
[ -z "$commit" ] && commit=HEAD

if ! [[ $commit =~ ^[0-9a-f]{4,40}$ ]] && [ "$commit" != "HEAD" ]; then
    commit=$(git rev-parse --quiet --short --verify "$commit")
fi

[ -n "$commit" ] || die "Unable to find a suitable commit"

echo "$baseurl;a=commit;h=$commit"