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#!/usr/bin/env ruby -w
# encoding: UTF-8
#
# = ActivitiesDB.rb -- PostRunner - Manage the data from your Garmin sport devices.
#
# Copyright (c) 2014, 2015 by Chris Schlaeger <cs@taskjuggler.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
#
require 'yaml'
require 'fit4ruby'
require 'postrunner/BackedUpFile'
module PostRunner
# Simple class to manage runtime configuration options which are persisted
# in a YAML file.
class RuntimeConfig
# Create a new RC object.
# @param dir [String] the directory to hold the config.yml file.
def initialize(dir)
create_directory(dir, 'application data')
@options = {
:version => '0.0.0',
:unit_system => :metric,
:import_dir => nil,
:data_dir => dir,
:html_dir => File.join(dir, 'html')
}
@config_file = File.join(dir, 'config.yml')
load_options if File.exist?(@config_file)
end
# Shortcut for get_option.
# @param name [Symbol] the name of the config option.
# @return [Object] the value of the config option.
def [](name)
get_option(name)
end
# Get a config option value.
# @param name [Symbol] the name of the config option.
# @return [Object] the value of the config option.
def get_option(name)
@options[name]
end
# Set a config option and update the RC file.
# @param name [Symbol] The name of the config option.
# @param value [Object] The value of the config option.
def set_option(name, value)
@options[name] = value
save_options
end
# Ensure that the requested directory exists.
def create_directory(dir, name)
return if Dir.exists?(dir)
Log.info "Creating #{name} directory #{dir}"
begin
Dir.mkdir(dir)
rescue StandardError
Log.fatal "Cannot create #{name} directory #{dir}: #{$!}"
end
end
private
def load_options
begin
opts = YAML::load_file(@config_file)
rescue IOError
Log.error "Cannot load config file '#{@config_file}': #{$!}"
end
# Merge the loaded options into the @options hash.
opts.each { |key, value| @options[key] = value }
end
def save_options
begin
BackedUpFile.write(@config_file, @options.to_yaml)
Log.info "Runtime config file '#{@config_file}' written"
rescue
Log.error "Cannot write config file '#{@config_file}': #{$!}"
end
end
end
end
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