mirror of
https://github.com/djohnlewis/stackdump
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55 lines
1.4 KiB
Bash
55 lines
1.4 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+.
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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. This path 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 "3" -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 $0`
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PYTHON_CMD=python3
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# if there is a PYTHON_CMD file in the script directory, use that instead
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if [ -e "$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=$SCRIPT_DIR/python3/packages:$SCRIPT_DIR/python3/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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# if we get here, it means the right version of Python was not found
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echo 'No suitable version of Python was found. Python 2.5 or later is required.'
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