Allow plugins to run code before and after the installation process

  esac

done

unset VERSION_NAME

DEFINITION="${ARGUMENTS[0]}"

[ -n "$DEFINITION" ] || usage 1

# Define `before_install` and `after_install` functions that allow

# plugin hooks to register a string of code for execution before or

# after the installation process.

declare -a before_hooks after_hooks

before_install() {

  local hook="$1"

  before_hooks["${#before_hooks[@]}"]="$hook"

}

after_install() {

  local hook="$1"

  after_hooks["${#after_hooks[@]}"]="$hook"

}

# Load plugin hooks.

for script in $(rbenv-hooks install); do

  source "$script"

done

VERSION_NAME="${DEFINITION##*/}"

# Set VERSION_NAME from $DEFINITION, if it is not already set. Then

# compute the installation prefix.

[ -n "$VERSION_NAME" ] || VERSION_NAME="${DEFINITION##*/}"

PREFIX="${RBENV_ROOT}/versions/${VERSION_NAME}"

# If RBENV_BUILD_ROOT is set, then always pass keep options to ruby-build

# If RBENV_BUILD_ROOT is set, always pass keep options to ruby-build.

if [ -n "${RBENV_BUILD_ROOT}" ]; then

  export RUBY_BUILD_BUILD_PATH="${RBENV_BUILD_ROOT}/${VERSION_NAME}"

  KEEP="-k"

fi

# Set RUBY_BUILD_CACHE_PATH to $RBENV_ROOT/cache, if the directory

# exists and the variable is not already set.

if [ -z "${RUBY_BUILD_CACHE_PATH}" ] && [ -d "${RBENV_ROOT}/cache" ]; then

  export RUBY_BUILD_CACHE_PATH="${RBENV_ROOT}/cache"

fi

ruby-build $KEEP $VERBOSE "$DEFINITION" "$PREFIX"

rbenv rehash

# Execute `before_install` hooks.

for hook in "${before_hooks[@]}"; do eval "$hook"; done

# Invoke `ruby-build` and record the exit status in $STATUS. Run

# `rbenv rehash` after a successful installation.

STATUS=0

ruby-build $KEEP $VERBOSE "$DEFINITION" "$PREFIX" || STATUS="$?"

# Execute `after_install` hooks.

for hook in "${after_hooks[@]}"; do eval "$hook"; done

# Run `rbenv-rehash` after a successful installation.

[ "$STATUS" != "0" ] || rbenv rehash

exit "$STATUS"