install.sh

#!/bin/bash

# Install script for kafe using pip

function check_python_2_3 () {
    echo "Checking Python version for executable '$1'..."
    if ! [[ `which $1` ]]; then
        echo "Python executable '$1' not found in PATH!"
        return 1
    fi
    local PYTHON_VERSION=`$1 --version 2>&1 | sed -e "s:[^0-9]*\([2-3]\)\..*:\1:g"`
    if [[ PYTHON_VERSION -eq 2 ]]; then
        echo "Python executable '$1' in Python 2: ok"
        return 0
    elif [[ PYTHON_VERSION -eq 3 ]]; then
        echo "Python executable '$1' in Python 3: ok"
        return 0
    else
        echo "Python executable '$1' not found in PATH!"
        return 1
    fi
}

function check_pip_python_2_3 () {
    echo "Checking Python version for pip executable '$1'..."
    if ! [[ `which $1` ]]; then
        echo "Pip executable '$1' not found in PATH!"
        return 1
    fi
    local PIP_PYTHON_VERSION=`$1 --version | sed -e "s:.*(python \([2-3]\).*):\1:g"`
    if [[ PIP_PYTHON_VERSION -eq 2 ]]; then
        echo "Pip executable '$1' uses Python 2: ok"
        return 0
    elif [[ PIP_PYTHON_VERSION -eq 3 ]]; then
        echo "Pip executable '$1' uses Python 3: ok"
        return 0
    else
        echo "Pip executable '$1' not found in PATH!"
        return 1
    fi
}

## -- main -- ##

# pip executables to try out
PIP_EXEC_LIST="pip pip2 pip2.7 pip3 pip3.1 pip3.2 pip3.3 pip3.4 pip3.5 pip3.6 pip3.7"
PY_EXEC="python"

check_python_2_3 $PY_EXEC
found_python_2_3=$?

if [[ found_python_2_3 -eq 0 ]]; then
    for pip_exec in $PIP_EXEC_LIST; do
        check_pip_python_2_3 $pip_exec
        found_pip_python_2_3=$?
        if [[ found_pip_python_2_3 -eq 0 ]]; then
            break
        fi
    done
    if [[ found_pip_python_2_3 -ne 0 ]]; then
        echo "None of the executables '$PIP_EXEC_LIST' seem to be valid. Aborting."
        exit 1
    fi
else
    echo "Python 2 or Python 3 executable not found on system. Aborting."
    exit 1
fi


echo "Using pip executable '$pip_exec'..."

# Build the source distribution
$PY_EXEC setup.py sdist

# Install using pip
$pip_exec install kafe --no-index --find-links dist