#!/bin/sh # # # Licensed to the Apache Software Foundation (ASF) under one # or more contributor license agreements. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. The ASF licenses this file # to you under the Apache License, Version 2.0 (the # "License"); you may not use this file except in compliance # with the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, # software distributed under the License is distributed on an # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY # KIND, either express or implied. See the License for the # specific language governing permissions and limitations # under the License. # # # Look for program[s] somewhere in $PATH. # # Options: # -s # Do not print out full pathname. (silent) # -pPATHNAME # Look in PATHNAME instead of $PATH # # Usage: # PrintPath [-s] [-pPATHNAME] program [program ...] # # Initially written by Jim Jagielski for the Apache configuration mechanism # (with kudos to Kernighan/Pike) # # This script falls under the Apache License. # See http://www.apache.org/docs/LICENSE ## # Some "constants" ## pathname=$PATH echo="yes" ## # Find out what OS we are running for later on ## os=`(uname) 2>/dev/null` ## # Parse command line ## for args in $* do case $args in -s ) echo="no" ;; -p* ) pathname="`echo $args | sed 's/^..//'`" ;; * ) programs="$programs $args" ;; esac done ## # Now we make the adjustments required for OS/2 and everyone # else :) # # First of all, all OS/2 programs have the '.exe' extension. # Next, we adjust PATH (or what was given to us as PATH) to # be whitespace separated directories. # Finally, we try to determine the best flag to use for # test/[] to look for an executable file. OS/2 just has '-r' # but with other OSs, we do some funny stuff to check to see # if test/[] knows about -x, which is the preferred flag. ## if [ "x$os" = "xOS/2" ] then ext=".exe" pathname=`echo -E $pathname | sed 's/^;/.;/ s/;;/;.;/g s/;$/;./ s/;/ /g s/\\\\/\\//g' ` test_exec_flag="-r" else ext="" # No default extensions pathname=`echo $pathname | sed 's/^:/.:/ s/::/:.:/g s/:$/:./ s/:/ /g' ` # Here is how we test to see if test/[] can handle -x testfile="pp.t.$$" cat > $testfile <<ENDTEST #!/bin/sh if [ -x / ] || [ -x /bin ] || [ -x /bin/ls ]; then exit 0 fi exit 1 ENDTEST if `/bin/sh $testfile 2>/dev/null`; then test_exec_flag="-x" else test_exec_flag="-r" fi rm -f $testfile fi for program in $programs do for path in $pathname do if [ $test_exec_flag $path/${program}${ext} ] && \ [ ! -d $path/${program}${ext} ]; then if [ "x$echo" = "xyes" ]; then echo $path/${program}${ext} fi exit 0 fi # Next try without extension (if one was used above) if [ "x$ext" != "x" ]; then if [ $test_exec_flag $path/${program} ] && \ [ ! -d $path/${program} ]; then if [ "x$echo" = "xyes" ]; then echo $path/${program} fi exit 0 fi fi done done exit 1