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#!/bin/sh
# Look for program[s] somewhere in $PATH.
#
# Options:
# -s
# Do not print out full pathname. (silent)
# -pPATHNAME
# Look in PATHNAME instead of $PATH
#
# Usage:
# PrintPath [-s] [-pPATHNAME] program [program ...]
#
# Initially written by Jim Jagielski for the Apache configuration mechanism
# (with kudos to Kernighan/Pike)
#
# This script falls under the Apache License.
# See http://www.apache.org/licenses/LICENSE
##
# Some "constants"
##
pathname=$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 $args" ;;
esac
done
##
# Now we make the adjustments required for OS/2 and everyone
# else :)
#
# First of all, all OS/2 programs have the '.exe' extension.
# Next, we adjust PATH (or what was given to us as PATH) to
# be whitespace seperated directories.
# Finally, we try to determine the best flag to use for
# test/[] to look for an executable file. OS/2 just has '-r'
# but with other OSs, we do some funny stuff to check to see
# if test/[] knows about -x, which is the prefered flag.
##
if [ "x$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
|
