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# Copyright 2023 Bill Sommerfeld 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 [ -d "$1/.git" ] && scmid="$scmid git" 63 [ -f "$1/.git" ] && scmid="$scmid git" 64 echo $scmid 65} 66 67if [[ -n "$CODEMGR_WS" ]]; then 68 if [[ ! -d "$CODEMGR_WS" ]]; then 69 print -u2 "which_scm: $CODEMGR_WS is not a directory." 70 exit 1 71 fi 72 set -- $(primary_type "$CODEMGR_WS") 73 if [[ $# != 1 ]]; then 74 set -- unknown 75 fi 76 echo "$1 $CODEMGR_WS" 77 exit 0 78fi 79 80ORIG_CWD=$(pwd) 81 82if [[ -d RCS ]]; then 83 echo "rcs $ORIG_CWD" 84 exit 0 85fi 86 87# If it's not Teamware, it could just be local SCCS. 88LOCAL_TYPE= 89[[ -d SCCS ]] && LOCAL_TYPE="sccs" 90 91# Scan upwards looking for top of tree. 92DIR=$ORIG_CWD 93CWD_TYPE=$(primary_type "$DIR") 94SCM_TYPE= 95while [[ "$DIR" != / ]]; do 96 set -- $(primary_type "$DIR") 97 if [[ $# > 1 ]]; then 98 echo "unknown $ORIG_CWD" 99 exit 0 100 fi 101 SCM_TYPE="$1" 102 # We're done searching if we hit either a change in type or the top 103 # of a "third type" control system. 104 if [[ "$SCM_TYPE" != "$CWD_TYPE" || "$SCM_TYPE" == git || \ 105 "$SCM_TYPE" == mercurial || "$SCM_TYPE" == teamware ]]; then 106 break 107 fi 108 PREVDIR="$DIR" 109 DIR=$(dirname "$DIR") 110done 111 112# We assume here that the system root directory isn't the root of the SCM. 113 114# Check for the "second type" of repository. In all cases, we started 115# out in the tree and stepped out on the last iteration, so we want 116# $PREVDIR. 117if [[ "$CWD_TYPE" == cvs || "$CWD_TYPE" == subversion ]]; then 118 echo "$CWD_TYPE $PREVDIR" 119 exit 0 120fi 121 122# If we still don't know what it is, then check for a local type in the 123# original directory. If none, then we don't know what it is. 124if [[ -z "$SCM_TYPE" ]]; then 125 if [[ -z "$LOCAL_TYPE" ]]; then 126 SCM_TYPE=unknown 127 else 128 SCM_TYPE=$LOCAL_TYPE 129 DIR=$ORIG_CWD 130 fi 131fi 132 133echo "$SCM_TYPE $DIR" 134exit 0 135