dev

#!/bin/bash
ROOT=$(git rev-parse --show-toplevel)

RC_PATH=$ROOT/.devrc

if [ -f $RC_PATH ]
then
    # Create a grep filter for rc lines which would override env values
    ENV_VAR_NAMES=$(env | cut -d = -f1)
    ENV_VAR_OVERRIDE_FILTER=$(
        echo $ENV_VAR_NAMES \
            | sed 's/\([A-Z_]*\)/^\1=/g' \
            | tr ' ' '|'
    )

    # Filter out lines starting with `#`
    # Filter out lines consisting of only whitespace
    # Filter out lines that override env vars
    RC_CONTENTS=$(
        cat $RC_PATH \
        | grep --invert-match '^#' \
        | grep --invert-match '^[[:space:]]*$' \
        | grep --invert-match --extended-regexp "$ENV_VAR_OVERRIDE_FILTER"
    )

    if [ ! -z "$RC_CONTENTS" ]
    then
        # Load the `.devrc`
        export $(echo $RC_CONTENTS | xargs)
        
        if [ $? -eq 1 ]
        then
          echo '`.devrc` has lines which are not `VAR=value` pairs, comments, or empty; aborting'
          exit 1
        fi
    fi
fi

# Locate the command
DEFAULT_CMD="help.sh"

if [ ! -z "$1" ]
then
    SUB_CMD_SRC="${1}.sh"
else
    SUB_CMD_SRC="${DEFAULT_CMD}"
fi

# Shift to pass arguments
shift

# Execute the command
bash $ROOT/.devtools/$SUB_CMD_SRC $@