# An instance of this class is returned by Rush::Commands#search.  It contains
# both the list of entries which matched the search, as well as the raw line
# matches.  These methods get equivalent functionality to "grep -l" and "grep -h".
#
# SearchResults mixes in Rush::Commands so that you can chain multiple searches
# or do file operations on the resulting entries.
#
# Examples:
#
#   myproj['**/*.rb'].search(/class/).entries.size
#   myproj['**/*.rb'].search(/class/).lines.size
#   myproj['**/*.rb'].search(/class/).copy_to other_dir
class Rush::SearchResults
	attr_reader :entries, :lines, :entries_with_lines, :pattern

	# Make a blank container.  Track the pattern so that we can colorize the
	# output to show what was matched.
	def initialize(pattern)
		# Duplication of data, but this lets us return everything in the exact
		# order it was received.
		@pattern = pattern
		@entries = []
		@entries_with_lines = {}
		@lines = []
	end

	# Add a Rush::Entry and the array of string matches.
	def add(entry, lines)
		# this assumes that entry is unique
		@entries << entry
		@entries_with_lines[entry] = lines
		@lines += lines
	end

	include Rush::Commands

	def each(&block)
		@entries.each(&block)
	end

	include Enumerable

	def colorize(line)
		lowlight + line.gsub(/(#{pattern.source})/, "#{hilight}\\1#{lowlight}") + normal
	end

	def hilight
		"\e[34;1m"
	end

	def lowlight
		"\e[37;2m"
	end

	def normal
		"\e[0m"
	end
end