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require 'pathname'
require_relative '../../puppet/error'
module Puppet::FileSystem
class PathPattern
class InvalidPattern < Puppet::Error; end
DOTDOT = '..'.freeze
ABSOLUTE_UNIX = /^\//
ABSOLUTE_WINDOWS = /^[a-z]:/i
CURRENT_DRIVE_RELATIVE_WINDOWS = /^\\/
def self.relative(pattern)
RelativePathPattern.new(pattern)
end
def self.absolute(pattern)
AbsolutePathPattern.new(pattern)
end
class << self
protected :new
end
# @param prefix [AbsolutePathPattern] An absolute path pattern instance
# @return [AbsolutePathPattern] A new AbsolutePathPattern prepended with
# the passed prefix's pattern.
def prefix_with(prefix)
new_pathname = prefix.pathname + pathname
self.class.absolute(new_pathname.to_s)
end
def glob
Dir.glob(@pathstr)
end
def to_s
@pathstr
end
protected
attr_reader :pathname
private
def validate
if @pathstr.split(Pathname::SEPARATOR_PAT).any? { |f| f == DOTDOT }
raise(InvalidPattern, _("PathPatterns cannot be created with directory traversals."))
elsif @pathstr.match?(CURRENT_DRIVE_RELATIVE_WINDOWS)
raise(InvalidPattern, _("A PathPattern cannot be a Windows current drive relative path."))
end
end
def initialize(pattern)
begin
@pathname = Pathname.new(pattern.strip)
@pathstr = @pathname.to_s
rescue ArgumentError => error
raise InvalidPattern.new(_("PathPatterns cannot be created with a zero byte."), error)
end
validate
end
end
class RelativePathPattern < PathPattern
def absolute?
false
end
def validate
super
if @pathstr.match?(ABSOLUTE_WINDOWS)
raise(InvalidPattern, _("A relative PathPattern cannot be prefixed with a drive."))
elsif @pathstr.match?(ABSOLUTE_UNIX)
raise(InvalidPattern, _("A relative PathPattern cannot be an absolute path."))
end
end
end
class AbsolutePathPattern < PathPattern
def absolute?
true
end
def validate
super
if !@pathstr.match?(ABSOLUTE_UNIX) && !@pathstr.match?(ABSOLUTE_WINDOWS)
raise(InvalidPattern, _("An absolute PathPattern cannot be a relative path."))
end
end
end
end
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