mirror of
https://github.com/djohnlewis/stackdump
synced 2025-01-22 22:51:36 +00:00
82 lines
2.2 KiB
Bash
82 lines
2.2 KiB
Bash
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#!/bin/bash
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##
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# This script attempts to find a version of Python on the system PATH, and
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# checks that it is 2.5+. If not, it attempts to find Java, and use Jython
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# instead.
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#
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# A alternate Python command can be specified in a file named PYTHON_CMD in this
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# script's directory. The same applies for Java, in a file named JAVA_CMD.
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# These paths will override any lookup on the system PATH.
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##
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# FUNCTIONS
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function checkPythonVersion {
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if [ ! -z "$1" ]
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then
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PYTHON_VER_MAJOR=`echo $1 | cut -d "." -f 1`
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PYTHON_VER_MINOR=`echo $1 | cut -d "." -f 2`
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if [ $PYTHON_VER_MAJOR -eq "2" -a $PYTHON_VER_MINOR -ge "5" ]
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then
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return 1
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fi
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fi
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return 0
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}
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# MAIN
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SCRIPT_DIR=`dirname $0`
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PYTHON_CMD=python
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# if there is a PYTHON_CMD file in the script directory, use that instead
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if [ -e "$SCRIPT_DIR/PYTHON_CMD" ]
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then
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PYTHON_CMD=`cat $SCRIPT_DIR/PYTHON_CMD`
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fi
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if [ ! -z "`which $PYTHON_CMD 2>/dev/null`" ]
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then
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# check if Python is the right version
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PYTHON_VER=`$PYTHON_CMD -V 2>&1 | cut -d " " -f 2`
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checkPythonVersion "$PYTHON_VER"
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if [ $? == 1 ]
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then
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echo "Using Python `which $PYTHON_CMD`"
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# execution ends here if Python is found
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PYTHONPATH=$SCRIPT_DIR/python/packages:$SCRIPT_DIR/python/src:$PYTHONPATH
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env PYTHONPATH=$PYTHONPATH $PYTHON_CMD "$@"
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exit $?
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fi
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fi
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# no valid Python version, so we're going to use Jython instead
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echo "Python not found, attempting to use Jython..."
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JAVA_CMD=java
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if [ -e "$SCRIPT_DIR/JAVA_CMD" ]
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then
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JAVA_CMD=`cat $SCRIPT_DIR/JAVA_CMD`
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fi
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if [ -z "`which $JAVA_CMD 2>/dev/null`" ]
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then
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echo "Java not found. Try specifying path in a file named JAVA_CMD in the script dir."
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exit 1
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fi
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echo "Using Jython with Java at `which $JAVA_CMD`"
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# this script is done this way due to Jython's quirks.
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# see http://wiki.python.org/jython/JythonFaq/DistributingJythonScripts#Using_the_Class_Path
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CLASSPATH=$SCRIPT_DIR/java/lib
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for jar in $SCRIPT_DIR/java/lib/*.jar
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do
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CLASSPATH=$jar:$CLASSPATH
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done
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JYTHONPATH=$SCRIPT_DIR/python/packages:$SCRIPT_DIR/python/src:$CLASSPATH:$JYTHONPATH
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$JAVA_CMD -cp $CLASSPATH -Dpython.path=$JYTHONPATH org.python.util.jython "$@"
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