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#!/bin/bash
#
# Launcher script for Clojure programs. These environment variables can be
# used to configure the script:
#
# CLOJURE_HOME
# The root directory where Clojure is installed.
# CLOJURE_JAVA
# The name of the java executable used to run Clojure.
# CLOJURE_JAVA_OPTS
# Additional options to be passed to the java executable.
# CLOJURE_CLASSPATH
# A path to be added to Clojure's classpath.
# CLOJURE_LIBRARY_PATH
# A path to be searched for native code such as DLL's or JNI
# libraries. This gets added to the Java options as
# "-Djava.library.path=$CLOJURE_LIBRARY_PATH".
# CLOJURE_LIB
# This directory, and any jars inside it, will be automatically
# added to Clojure's classpath.
#
# CLOJURE_JLINE
# This should be the path to Jline jar.
# TODO:
# make CLOJURE_LIB a path instead of a single directory
# allow for adding to CLOJURE_LIB from the command line
usage="\
usage: clojure [options] [file1 [file2] ...]
Options:
--help, -h show this message
--java-cmd, -J the Java executable to use
--java-opts, -j add options to be passed on to the JVM
--classpath, -cp add to Clojure's classpath
--library-path, -L add to the path to search for native libraries
--verbose, -v print initialization information
"
## read ~/.clojurerc for home configuration
[ -e ~/.clojurerc ] && . ~/.clojurerc
## read ./.clojurerc for project specific configuration
[ -e ./.clojurerc ] && . ./.clojurerc
if [ ! "$CLOJURE_HOME" ]; then
# Find the real path to Clojure's home directory if $0 is a symlink
#program="$0"
#while [ -h "$program" ]; do
# ls=`ls -ld "$program"`
# link=`expr "$ls" : '.*-> \(.*\)$'`
# if expr "$link" : '.*/.*' >/dev/null; then
# program="$link"
# else
# program="`dirname $program`/$link"
# fi
#done
#script_dir=`dirname "$program"`
#relative_clojure_home=`dirname "$script_dir"`
#CLOJURE_HOME=`cd "$relative_clojure_home" && pwd`
. /etc/profile.d/clojure.sh
fi
if [ ! "$CLOJURE_JAVA" ]; then
CLOJURE_JAVA="java";
fi
if [ ! "$CLOJURE_JAVA_OPTS" ]; then
CLOJURE_JAVA_OPTS="-Dpid=$$"; # set the pid for SLIME
fi
if [ ! "$CLOJURE_CLASSPATH" ]; then
CLOJURE_CLASSPATH=".:/usr/share/java/asm-all-4.jar"
fi
## Add Clojure home jars.
for jar in "$CLOJURE_HOME"/*.jar; do
CLOJURE_CLASSPATH="$CLOJURE_CLASSPATH:$jar"
done
if [ -d "$CLOJURE_LIB" ]; then
CLOJURE_CLASSPATH="$CLOJURE_CLASSPATH:$CLOJURE_LIB"
for jar in "$CLOJURE_LIB"/*.jar; do
CLOJURE_CLASSPATH="$CLOJURE_CLASSPATH:$jar"
done
fi
# this is now the same for both the repl and for scripts
main="clojure.main"
repl=0
verbose=0
while true; do
case $1 in
-h|--help)
echo "$usage"; exit 1;;
-J|--java-cmd)
CLOJURE_JAVA="$2"; shift; shift;;
-j|--java-opts)
CLOJURE_JAVA_OPTS="$CLOJURE_JAVA_OPTS $2"; shift; shift;;
-cp|--classpath)
CLOJURE_CLASSPATH="$CLOJURE_CLASSPATH:$2"; shift; shift;;
-L|--library-path)
if [ "$CLOJURE_LIBRARY_PATH" ]; then
CLOJURE_LIBRARY_PATH="$CLOJURE_LIBRARY_PATH:$2";
else
CLOJURE_LIBRARY_PATH="$2";
fi
shift; shift;;
-v|--verbose)
verbose=1; shift;;
*) break;;
esac
done
[ $verbose -eq 1 ] && echo "$CLOJURE_CLASSPATH"
# If we didn't get any files to load on the commandline, we want to run the
# repl, with command line editing if available.
[ $# -eq 0 ] && repl=1
# If the classpath contains the JLine jar, use the JLine console runner
if expr "$CLOJURE_CLASSPATH" : ".*jline.*\.jar" >/dev/null; then
[ $repl -eq 1 ] && jline="jline.ConsoleRunner"
fi
# Enable rlwrap if present
if [ $repl -eq 1 ] && [ -z $jline ]; then
rlwrap=`type -p rlwrap`
fi
## Add CLOJURE_LIBRARY_PATH to the Java options if necessary
if [ -n "$CLOJURE_LIBRARY_PATH" ]; then
CLOJURE_JAVA_OPTS="$CLOJURE_JAVA_OPTS -Djava.library.path=$CLOJURE_LIBRARY_PATH"
fi
cmd=`echo $rlwrap "$CLOJURE_JAVA" "$CLOJURE_JAVA_OPTS" -cp "$CLOJURE_CLASSPATH" $jline $main`
[ $verbose -eq 1 ] && echo "$cmd" "$@"
exec `echo $cmd` "$@"
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