Class: SearchPath

Inherits:
Object
  • Object
show all
Defined in:
lib/caphir/searchpath.rb

Overview

Copyright © 2004 Charles M Mills This document is licenced under The MIT Licence. THIS SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND. See included LICENCE file.

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SearchPath

Returns a new instance of SearchPath.



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# File 'lib/caphir/searchpath.rb', line 10

def initialize
	@paths = []
	@next_path = {}
end

Class Method Details

.check(p) ⇒ Object 



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# File 'lib/caphir/searchpath.rb', line 7

def SearchPath.check(p)
	raise "invalid search path: #{p}" unless File.directory?(p)
end

Instance Method Details

#<<(path) ⇒ Object 



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# File 'lib/caphir/searchpath.rb', line 18

def <<(path)
	SearchPath.check(path)
	@paths << path
end

#dup ⇒ Object 



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# File 'lib/caphir/searchpath.rb', line 37

def dup
	d = SearchPath.new
	@paths.each do |p|
		d << p
	end
	d
end

#find(file) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/caphir/searchpath.rb', line 23

def find(file)
	raise ArgumentError, "'#{file}' not found" \
		unless f = self.find_in(@paths, file)
	f
end

#find_next(file) ⇒ Object 



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# File 'lib/caphir/searchpath.rb', line 28

def find_next(file)
	if next_paths = @next_path[file]
		f = self.find_in(next_paths, file)
		return f if f
	end
	# start the search over
	self.find(file)
end

#unshift(path) ⇒ Object 



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# File 'lib/caphir/searchpath.rb', line 14

def unshift(path)
	SearchPath.check(path)
	@paths.unshift(path)
end