#!/bin/bash

# Automatically run Ruby scripts with "bundle exec" (but only when appropriate).
# http://effectif.com/ruby/automating-bundle-exec
# Github: https://github.com/gma/bundler-exec

## Functions

bundler-installed()
{
    which bundle > /dev/null 2>&1
}

within-bundled-project()
{
    local dir="$PWD"
    while [ "$dir" != "/" ]; do
        if [ -f "$dir/Gemfile" ]; then
            return 0
        fi
        dir="$(dirname $dir)"
    done
    return 1
}

run-with-bundler()
{
    if bundler-installed && within-bundled-project; then
        bundle exec "$@"
    else
        "$@"
    fi
}

define-bundler-aliases()
{
    # Allow zsh to iterate over list of words
    [ -n "$ZSH_VERSION" ] && setopt localoptions shwordsplit

    local command

    for command in $BUNDLED_COMMANDS; do
        if [[ $command != "bundle" && $command != "gem" ]]; then
            alias $command="run-with-bundler $command"
        fi
    done
}


## Main program

BUNDLED_COMMANDS="${BUNDLED_COMMANDS:-
cap
capify
chef
chefspec
chef-apply
chef-client
chef-shell
chef-solo
cucumber
foodcritic
guard
haml
html2haml
jasmine
jekyll
kitchen
knife
middleman
pry
rackup
rake
rake2thor
rspec
ruby
sass
sass-convert
serve
shotgun
sidekiq
spec
spork
strainer
thin
thor
tilt
tt
turn
unicorn
unicorn_rails
wagon
}"

define-bundler-aliases

unset -f define-bundler-aliases