ini.rb - read and write ini files
Copyright (C) 2007 Jeena Paradies License: GPL Author: Jeena Paradies (info@jeenaparadies.net)
Overview
This file provides a read-wite handling for ini files. The data of a ini file is represented by a object which is populated with strings.
[RW] | comment | :inihash is a hash which holds all ini data :comment is a string which holds the comments on the top of the file |
[RW] | inihash | :inihash is a hash which holds all ini data :comment is a string which holds the comments on the top of the file |
path is a path to the ini file load if nil restores the data if possible
if true restores the data, if not possible raises an error if false does not resotre the data
[ + ]
# File lib/more/facets/ini.rb, line 105 def initialize(path, load=nil) @path = path @inihash = {} if load or ( load.nil? and FileTest.readable_real? @path ) restore() end end
Reading comments from file
path is a path to the ini file
Returns a string with comments from the beginning of the ini file.
[ + ]
# File lib/more/facets/ini.rb, line 198 def Ini.read_comment_from_file(path) comment = "" IO.foreach(path) do |line| line.strip! break unless line[0,1] == "#" or line == "" comment << "#{line[1, line.length ].strip}\n" end comment end
Reading data from file
path is a path to the ini file
returns a hash which represents the data from the file
[ + ]
# File lib/more/facets/ini.rb, line 153 def Ini.read_from_file(path) inihash = {} headline = nil IO.foreach(path) do |line| line = line.strip.split(/#/)[0] # read it only if the line doesn't begin with a "=" and is long enough unless line.length < 2 and line[0,1] == "=" # it's a headline if the line begins with a "[" and ends with a "]" if line[0,1] == "[" and line[line.length - 1, line.length] == "]" # get rid of the [] and unnecessary spaces headline = line[1, line.length - 2 ].strip inihash[headline] = {} else key, value = line.split(/=/, 2) key = key.strip unless key.nil? value = value.strip unless value.nil? unless headline.nil? inihash[headline][key] = value else inihash[key] = value unless key.nil? end end end end inihash end
Turn a hash (up to 2 levels deepness) into a ini string
inihash is a hash representing the ini File. Default is a empty hash.
Returns a string in the ini file format.
[ + ]
# File lib/more/facets/ini.rb, line 243 def Ini.to_s(inihash={}) str = "" inihash.each do |key, value| if value.is_a? Hash str << "[#{key.to_s}]\n" value.each do |under_key, under_value| str << "#{under_key.to_s}=#{under_value.to_s unless under_value.nil?}\n" end else str << "#{key.to_s}=#{value.to_s unless value2.nil?}\n" end end str end
Writing a ini hash into a file
path is a path to the ini file inihash is a hash representing the ini File. Default is a empty hash. comment is a string with comments which appear on the
top of the file. Each line will get a "#" before. Default is no comment.
[ + ]
# File lib/more/facets/ini.rb, line 220 def Ini.write_to_file(path, inihash={}, comment=nil) raise TypeError, "String expected" unless comment.is_a? String or comment.nil? raise TypeError, "Hash expected" unless inihash.is_a? Hash File.open(path, "w") { |file| unless comment.nil? comment.each do |line| file << "# #{line}" end end file << Ini.to_s(inihash) } end
Retrive the ini data for the key key
[ + ]
# File lib/more/facets/ini.rb, line 117 def [](key) @inihash[key] end
Set the ini data for the key key
[ + ]
# File lib/more/facets/ini.rb, line 124 def []=(key, value) raise TypeError, "String expected" unless key.is_a? String raise TypeError, "String or Hash expected" unless value.is_a? String or value.is_a? Hash @inihash[key] = value end
Restores the data from file into the object
[ + ]
# File lib/more/facets/ini.rb, line 134 def restore() @inihash = Ini.read_from_file(@path) @comment = Ini.read_comment_from_file(@path) end
Store data from the object in the file
[ + ]
# File lib/more/facets/ini.rb, line 142 def update() Ini.write_to_file(@path, @inihash, @comment) end