environment.sh

#
# This script sets up the local shell environment.
#

#
# Do NOT run this script (`./environment.sh` or `bash
# environment.sh`); instead source it (`source environment.sh`).
# 
SCRIPT_NAME=$(basename "$0")
SOURCE_NAME=$(basename "$BASH_SOURCE")
if [ "$SCRIPT_NAME" = "$SOURCE_NAME" ]; then
    echo "ERROR: Do not execute ('bash environment.sh') this script! Source it instead ('source environment.sh')"
    exit 1
fi

ROOT_DIR=$(pwd)
LIB_DIR="${ROOT_DIR}"
BIN_DIR="${ROOT_DIR}/bin"


#
# Python virtualenv
#

VENV_NAME=".virtualenv"
VENV_DIR="${ROOT_DIR}/${VENV_NAME}"
if [ -d "$VENV_DIR" ]; then
    echo "[virtualenv] Entering Python virtualenv at ${VENV_DIR}"
    . "${VENV_DIR}/bin/activate"
else
    echo "ERROR: Python virtualenv directory (${VENV_DIR}) does not exist.  Did you run 'make' yet?"
fi

#
# PYTHONPATH
#
# We need to add this application's 'lib' dir to PYTHONPATH.
#

if [ -z $(echo $PYTHONPATH | grep "$LIB_DIR") ]; then
    echo "[pythonpath] Adding $LIB_DIR to PYTHONPATH (${PYTHONPATH})"
    export PYTHONPATH="${PYTHONPATH}:${LIB_DIR}"
else
    echo "[pythonpath] $LIB_DIR already on PYTHONPATH (${PYTHONPATH})"
fi
export MYPYPATH=":$(python -m site | grep virtual | sed -e "s/^ *'//g" -e "s/',/\//g")"

#
# PATH
#
# We need to add this application's 'bin' dir to PATH.
#

if [ -z $(echo $PATH | grep "$BIN_DIR") ]; then
    echo "[path]       Adding $BIN_DIR to PATH (${PATH})"
    export PATH="${PATH}:${BIN_DIR}"
else
    echo "[path]       $BIN_DIR already on PATH (${PATH})"
fi