Class: VCLog::HistoryFile

Inherits:
Object
  • Object
show all
Defined in:
lib/vclog/history_file.rb

Overview

The HistoryFile class will parse a history into an array of release tags. Of course to do this, it assumes a specific file format.

Constant Summary collapse

FILE = 
'{HISTORY,HISTORY.*}'
LINE = 
/^[=#]/
VERS = 
/(\d+[._])+\d+/
DATE = 
/(\d+[-])+\d+/
CASEFOLD =

Alias for ‘File::FNM_CASEFOLD`.

File::FNM_CASEFOLD

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(source = nil) ⇒ HistoryFile

Setup new HistoryFile instance.



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# File 'lib/vclog/history_file.rb', line 22

def initialize(source=nil)
  if File.file?(source)
    @file = source
    @root = File.dirname(source)
  elsif File.directory?(source)
    @file = Dir.glob(File.join(source,FILE), CASEFOLD).first
    @root = source
  else
    @file = Dir.glob(FILE).first
    @root = Dir.pwd
  end
  raise "no history file" unless @file

  @tags = extract_tags
end

Instance Attribute Details

#tags ⇒ Object (readonly)

Release tags.



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# File 'lib/vclog/history_file.rb', line 19

def tags
  @tags
end

Instance Method Details

#extract_tags ⇒ Object

Parse history file.



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# File 'lib/vclog/history_file.rb', line 39

def extract_tags
  tags = []
  desc = ''
  text = File.read(@file)
  text.lines.each do |line|
    if LINE =~ line
      vers = (VERS.match(line) || [])[0]
      date = (DATE.match(line) || [])[0]
      next unless vers
      tags << [vers, date, desc = '']
    else
      desc << line
    end
  end

  tags.map do |vers, date, desc|
    index = desc.index(/^Changes:/) || desc.index(/^\*/) || desc.size
    desc = desc[0...index].strip.fold
    #[vers, date, desc]
    Tag.new(:name=>vers, :date=>date, :msg=>desc)
  end
end