github-changelog-generator/lib/github_changelog_generator/parser_file.rb
2016-02-23 23:54:20 +01:00

43 lines
1.1 KiB
Ruby

require 'pathname'
module GitHubChangelogGenerator
ParserError = Class.new(StandardError)
class ParserFile
FILENAME = ".github_changelog_generator"
def initialize(options)
@options = options
end
# Destructively change @options using data in configured options file.
def parse!
file.each_line { |line| parse_line!(line) } if file.exist?
end
private
def file
@file ||= Pathname(File.expand_path(@options[:params_file] || FILENAME))
end
def parse_line!(line)
key_sym, value = extract_pair(line)
value = true if value =~ /^(true|t|yes|y|1)$/i
value = false if value =~ /^(false|f|no|n|0)$/i
@options[key_sym] = value
rescue
raise ParserError, "Config file #{file} is incorrect in line \"#{line.gsub(/[\n\r]+/, '')}\""
end
# Returns a the setting as a symbol and its string value sans newlines.
#
# @param line [String] unparsed line from config file
# @return [Array<Symbol, String>]
def extract_pair(line)
key, value = line.split("=", 2)
[key.sub("-", "_").to_sym, value.gsub(/[\n\r]+/, "")]
end
end
end