# -*- coding: binary -*-
###
#
# framework-util-svn
# --------------
#
# The class provides methods for parsing the SVN information in the framework directory
#
###

require 'date'

module Msf
module Util
class SVN

	def self.load_root
		info = {}
		path = ::File.join(::File.dirname(__FILE__), "..", "..", "..", ".svn", "entries")
		if !::File.exists?(path)
			return info
		end
		contents = ''
		File.open(path, "rb") do |fd|
			contents = fd.read(::File.size(path))
		end
		if contents.include? "<?xml"
			require 'rexml/document'
			rd = REXML::Document.new(contents).root
			rd.elements.each { |e|
				if e.attributes['name'] == ""
					info[:root] = e.attributes['url']
					info[:revision] = e.attributes['revision']
					info[:updated] = e.attributes['committed-date']
					break
				end
			}
		else
			ents = contents.split("\x0c")
			ents[0].split("\n").each do |line|
				line.strip!
				next if line.empty?
				case line
				when /framework3/
					info[:root] = line
				when /^\d+$/
					info[:revision] = line.to_i
				when /^\d{4}-\d.*T/
					info[:updated] = line
				end
				break if (info[:root] and info[:revision] and info[:updated])
			end
		end
		info
	end

	def self.revision
		@@info ||= load_root
		@@info[:revision]
	end

	def self.updated
		@@info ||= load_root
		@@info[:updated]
	end

	def self.root
		@@info ||= load_root
		@@info[:root]
	end

	def self.days_since_update
		@@info ||= load_root
		svnt = @@info[:updated]
		if(not svnt)
			return
		end

		# Date.parse and Date.strptime are both broken beyond repair in
		# ruby 1.8.6 and older.  Just bail if the parsing doesn't work.
		begin
			diff = (Date.parse(Time.now.to_s) - Date.parse(svnt)).to_f
		rescue ArgumentError
		end
	end

	def self.last_updated_friendly
		diff = self.days_since_update
		case diff
		when nil
			"at an unknown date"
		when -2.0 .. 1.0
			"today"
		when 1.0 .. 2.0
			"yesterday"
		else
			if (diff.to_i > 7)
				"%red#{diff.to_i} days ago%clr"
			else
				"#{diff.to_i} days ago"
			end
		end
	end

	def self.last_updated_date
		@@info ||= load_root
                svnt = @@info[:updated]
                if(not svnt)
                        return
                end
		begin
			Date.parse(@@info[:updated])
		rescue ArgumentError
		end
	end

end
end
end