1#!/usr/bin/ksh -p 2# 3# CDDL HEADER START 4# 5# The contents of this file are subject to the terms of the 6# Common Development and Distribution License (the "License"). 7# You may not use this file except in compliance with the License. 8# 9# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10# or http://www.opensolaris.org/os/licensing. 11# See the License for the specific language governing permissions 12# and limitations under the License. 13# 14# When distributing Covered Code, include this CDDL HEADER in each 15# file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16# If applicable, add the following below this CDDL HEADER, with the 17# fields enclosed by brackets "[]" replaced with your own identifying 18# information: Portions Copyright [yyyy] [name of copyright owner] 19# 20# CDDL HEADER END 21# 22 23# 24# Copyright 2008 Sun Microsystems, Inc. All rights reserved. 25# Use is subject to license terms. 26# 27# ident "%Z%%M% %I% %E% SMI" 28# 29 30# which_scm outputs two strings: one identifying the SCM in use, and 31# the second giving the root directory for the SCM, if known, or just 32# the current working directory if not known. 33 34# There are three distinct types of SCM systems we can detect. The first 35# type have a control directory per directory (RCS and SCCS), with no other 36# structure. The second type have a control directory in each subdirectory 37# within a tree (CVS and SVN). The last type have a single control 38# directory at the top of the tree (Teamware and Mercurial). 39 40# If the common CODEMGR_WS variable is set, then we look there for the 41# SCM type and bail out if we can't determine it. 42 43# If that variable is not set, then we start in the current directory 44# and work our way upwards until we find the top of the tree or we 45# encounter an error. 46 47# We do handle nested SCM types, and report the innermost one, but if 48# you nest one of the "second type" systems within another instance of 49# itself, we'll keep going upwards and report the top of the nested 50# set of trees. 51 52 53# Check for well-known tree-type source code management (SCM) systems. 54function primary_type 55{ 56 typeset scmid 57 58 [ -d "$1/Codemgr_wsdata" ] && scmid="$scmid teamware" 59 [ -d "$1/.hg" ] && scmid="$scmid mercurial" 60 [ -d "$1/CVS" ] && scmid="$scmid cvs" 61 [ -d "$1/.svn" ] && scmid="$scmid subversion" 62 echo $scmid 63} 64 65if [[ -n "$CODEMGR_WS" ]]; then 66 if [[ ! -d "$CODEMGR_WS" ]]; then 67 print -u2 "which_scm: $CODEMGR_WS is not a directory." 68 exit 1 69 fi 70 set -- $(primary_type "$CODEMGR_WS") 71 if [[ $# != 1 ]]; then 72 set -- unknown 73 fi 74 echo "$1 $CODEMGR_WS" 75 exit 0 76fi 77 78ORIG_CWD=$(pwd) 79 80if [[ -d RCS ]]; then 81 echo "rcs $ORIG_CWD" 82 exit 0 83fi 84 85# If it's not Teamware, it could just be local SCCS. 86LOCAL_TYPE= 87[[ -d SCCS ]] && LOCAL_TYPE="sccs" 88 89# Scan upwards looking for top of tree. 90DIR=$ORIG_CWD 91CWD_TYPE=$(primary_type "$DIR") 92SCM_TYPE= 93while [[ "$DIR" != / ]]; do 94 set -- $(primary_type "$DIR") 95 if [[ $# > 1 ]]; then 96 echo "unknown $ORIG_CWD" 97 exit 0 98 fi 99 SCM_TYPE="$1" 100 # We're done searching if we hit either a change in type or the top 101 # of a "third type" control system. 102 if [[ "$SCM_TYPE" != "$CWD_TYPE" || "$SCM_TYPE" == mercurial || \ 103 "$SCM_TYPE" == teamware ]]; then 104 break 105 fi 106 PREVDIR="$DIR" 107 DIR=$(dirname "$DIR") 108done 109 110# We assume here that the system root directory isn't the root of the SCM. 111 112# Check for the "second type" of repository. In all cases, we started 113# out in the tree and stepped out on the last iteration, so we want 114# $PREVDIR. 115if [[ "$CWD_TYPE" == cvs || "$CWD_TYPE" == subversion ]]; then 116 echo "$CWD_TYPE $PREVDIR" 117 exit 0 118fi 119 120# If we still don't know what it is, then check for a local type in the 121# original directory. If none, then we don't know what it is. 122if [[ -z "$SCM_TYPE" ]]; then 123 if [[ -z "$LOCAL_TYPE" ]]; then 124 SCM_TYPE=unknown 125 else 126 SCM_TYPE=$LOCAL_TYPE 127 DIR=$ORIG_CWD 128 fi 129fi 130 131echo "$SCM_TYPE $DIR" 132exit 0 133