/usr/src/tools/scripts/which_scm.sh
Shell | 131 lines | 60 code | 18 blank | 53 comment | 27 complexity | 35398d4b1270faa548ad004e34d21955 MD5 | raw file
- #!/usr/bin/ksh -p
- #
- # CDDL HEADER START
- #
- # The contents of this file are subject to the terms of the
- # Common Development and Distribution License (the "License").
- # You may not use this file except in compliance with the License.
- #
- # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
- # or http://www.opensolaris.org/os/licensing.
- # See the License for the specific language governing permissions
- # and limitations under the License.
- #
- # When distributing Covered Code, include this CDDL HEADER in each
- # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
- # If applicable, add the following below this CDDL HEADER, with the
- # fields enclosed by brackets "[]" replaced with your own identifying
- # information: Portions Copyright [yyyy] [name of copyright owner]
- #
- # CDDL HEADER END
- #
- #
- # Copyright 2008 Sun Microsystems, Inc. All rights reserved.
- # Use is subject to license terms.
- #
- # which_scm outputs two strings: one identifying the SCM in use, and
- # the second giving the root directory for the SCM, if known, or just
- # the current working directory if not known.
- # There are three distinct types of SCM systems we can detect. The first
- # type have a control directory per directory (RCS and SCCS), with no other
- # structure. The second type have a control directory in each subdirectory
- # within a tree (CVS and SVN). The last type have a single control
- # directory at the top of the tree (Teamware and Mercurial).
- # If the common CODEMGR_WS variable is set, then we look there for the
- # SCM type and bail out if we can't determine it.
- # If that variable is not set, then we start in the current directory
- # and work our way upwards until we find the top of the tree or we
- # encounter an error.
- # We do handle nested SCM types, and report the innermost one, but if
- # you nest one of the "second type" systems within another instance of
- # itself, we'll keep going upwards and report the top of the nested
- # set of trees.
- # Check for well-known tree-type source code management (SCM) systems.
- function primary_type
- {
- typeset scmid
- [ -d "$1/Codemgr_wsdata" ] && scmid="$scmid teamware"
- [ -d "$1/.hg" ] && scmid="$scmid mercurial"
- [ -d "$1/CVS" ] && scmid="$scmid cvs"
- [ -d "$1/.svn" ] && scmid="$scmid subversion"
- [ -d "$1/.git" ] && scmid="$scmid git"
- echo $scmid
- }
- if [[ -n "$CODEMGR_WS" ]]; then
- if [[ ! -d "$CODEMGR_WS" ]]; then
- print -u2 "which_scm: $CODEMGR_WS is not a directory."
- exit 1
- fi
- set -- $(primary_type "$CODEMGR_WS")
- if [[ $# != 1 ]]; then
- set -- unknown
- fi
- echo "$1 $CODEMGR_WS"
- exit 0
- fi
- ORIG_CWD=$(pwd)
- if [[ -d RCS ]]; then
- echo "rcs $ORIG_CWD"
- exit 0
- fi
- # If it's not Teamware, it could just be local SCCS.
- LOCAL_TYPE=
- [[ -d SCCS ]] && LOCAL_TYPE="sccs"
- # Scan upwards looking for top of tree.
- DIR=$ORIG_CWD
- CWD_TYPE=$(primary_type "$DIR")
- SCM_TYPE=
- while [[ "$DIR" != / ]]; do
- set -- $(primary_type "$DIR")
- if [[ $# > 1 ]]; then
- echo "unknown $ORIG_CWD"
- exit 0
- fi
- SCM_TYPE="$1"
- # We're done searching if we hit either a change in type or the top
- # of a "third type" control system.
- if [[ "$SCM_TYPE" != "$CWD_TYPE" || "$SCM_TYPE" == git || \
- "$SCM_TYPE" == mercurial || "$SCM_TYPE" == teamware ]]; then
- break
- fi
- PREVDIR="$DIR"
- DIR=$(dirname "$DIR")
- done
- # We assume here that the system root directory isn't the root of the SCM.
- # Check for the "second type" of repository. In all cases, we started
- # out in the tree and stepped out on the last iteration, so we want
- # $PREVDIR.
- if [[ "$CWD_TYPE" == cvs || "$CWD_TYPE" == subversion ]]; then
- echo "$CWD_TYPE $PREVDIR"
- exit 0
- fi
- # If we still don't know what it is, then check for a local type in the
- # original directory. If none, then we don't know what it is.
- if [[ -z "$SCM_TYPE" ]]; then
- if [[ -z "$LOCAL_TYPE" ]]; then
- SCM_TYPE=unknown
- else
- SCM_TYPE=$LOCAL_TYPE
- DIR=$ORIG_CWD
- fi
- fi
- echo "$SCM_TYPE $DIR"
- exit 0