shopt -s extglob

if [ $(uname) == Darwin ]; then

sed() { command sed -l "$@"; }

else

sed() { command sed -u "$@"; }

fi

# Syntax sugar.

indent() {

sed "s/^/ /"

}

# Clean up pip output

cleanup() {

sed -e 's/\.\.\.\+/.../g' | sed -e '/already satisfied/Id' | sed -e '/Overwriting/Id' | sed -e '/python executable/Id' | sed -e '/no previously-included files/Id'

}

# Buildpack Indented line.

puts-line() {

echo " $@"

}

# Buildpack Steps.

puts-step() {

echo "-----> $@"

}

# Buildpack Warnings.

puts-warn() {

echo " ! $@"

}

# Buildpack Commands.

puts-cmd() {

echo " $ $@"

}

# Usage: $ set-env key value

set-env() {

echo "export $1=$2" >> $PROFILE_PATH

}

# Usage: $ set-default-env key value

set-default-env() {

echo "export $1=\${$1:-$2}" >> $PROFILE_PATH

}

# Usage: $ un-set-env key

un-set-env() {

echo "unset $1" >> $PROFILE_PATH

}

# Does some serious copying.

deep-cp() {

declare source="$1" target="$2"

mkdir -p "$target"

# cp doesn't like being called without source params,

# so make sure they expand to something first.

# subshell to avoid surprising caller with shopts.

(

shopt -s nullglob dotglob

set -- "$source"/!(tmp|.|..)

[[ $# == 0 ]] || cp -a "$@" "$target"

)

}

# Does some serious moving.

deep-mv() {

deep-cp "$1" "$2"

deep-rm "$1"

}

# Does some serious deleting.

deep-rm() {

# subshell to avoid surprising caller with shopts.

(

shopt -s dotglob

rm -rf "$1"/!(.curlrc|.netrc|tmp|.|..)

)

}

sub-env() {

WHITELIST=${2:-''}

BLACKLIST=${3:-'^(GIT_DIR|PYTHONHOME|LD_LIBRARY_PATH|LIBRARY_PATH|PATH)$'}

# Python-specific variables.

export PYHONHOME=$BUILD_DIR/.heroku/python

export PYTHONPATH=$BUILD_DIR/

(

if [ -d "$ENV_DIR" ]; then

for e in $(ls $ENV_DIR); do

echo "$e" | grep -E "$WHITELIST" | grep -qvE "$BLACKLIST" &&

export "$e=$(cat $ENV_DIR/$e)"

:

done

fi

$1

)

}