= IniParse {<img src="https://secure.travis-ci.org/antw/iniparse.png" alt="Build Status" />}[http://travis-ci.org/antw/iniparse]

IniParse is a pure Ruby library for parsing
INI[http://en.wikipedia.org/wiki/INI_file] configuration and data
files.

=== Main features

* <b>Support for duplicate options.</b> While not common, some INI files
  contain an option more than once. IniParse does not overwrite previous
  options, but allows you to access all of the duplicate values.

* <b>Preservation of white space and blank lines.</b> When writing back to
  your INI file, line indents, white space and comments (and their indents)
  are preserved. Only trailing white space (which has no significance in INI
  files) will be removed.

* <b>Preservation of section and option ordering.</b> Sections and options
  are kept in the same order they are in the original document ensuring that
  nothing gets mangled when writing back to the file.

If you don't need the above mentioned features, you may find the simpler
IniFile gem does all you need.

=== Opening an INI file

Parsing an INI file is fairly simple:

    IniParse.parse( File.read('path/to/my/file.ini') ) # => IniParse::Document

IniParse.parse returns an IniParse::Document instance which represents the
passed "INI string". Assuming you know the structure of the document, you can
access the sections in the INI document with IniParse::Document#[]. For
example:

    document = IniParse.parse( File.read('path/to/my/file.ini') )

    document['a_section']
      # => IniParse::Lines::Section

    document['a_section']['an_option']
      # => "a value"
    document['a_section']['another_option']
      # => "another value"

In the event that duplicate options were found, an array of the values will
be supplied to you.

    document = IniParse.parse <<-EOS
      [my_section]
      key = value
      key = another value
      key = a third value
    EOS

    document['my_section']['key']
      # => ['value', 'another value', 'third value']

Options which appear before the first section will be added to a section called
"__anonymous__".

    document = IniParse.parse <<-EOS
      driver = true

      [driver]
      key = value
    EOS

    document['__anonymous__']['driver']
      # => true

    document['driver']['key']
      # => 'value'

=== Updating an INI file

    document['a_section']['an_option']
      # => "a value"
    document['a_section']['an_option'] = 'a new value'
    document['a_section']['an_option']
      # => "a new value"

Delete entire sections by calling `#delete` with the section name...

    document.delete('a_section')

... or a single option with `#delete` on the section object:

    document['a_section'].delete('an_option')

=== Creating a new INI file

See IniParse::Generator.
