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Diffstat (limited to 'trunk/lib/uri/ftp.rb')
| -rw-r--r-- | trunk/lib/uri/ftp.rb | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/trunk/lib/uri/ftp.rb b/trunk/lib/uri/ftp.rb new file mode 100644 index 0000000000..3afdce01b4 --- /dev/null +++ b/trunk/lib/uri/ftp.rb @@ -0,0 +1,198 @@ +# +# = uri/ftp.rb +# +# Author:: Akira Yamada <akira@ruby-lang.org> +# License:: You can redistribute it and/or modify it under the same term as Ruby. +# Revision:: $Id$ +# + +require 'uri/generic' + +module URI + + # + # FTP URI syntax is defined by RFC1738 section 3.2. + # + class FTP < Generic + DEFAULT_PORT = 21 + + COMPONENT = [ + :scheme, + :userinfo, :host, :port, + :path, :typecode + ].freeze + # + # Typecode is "a", "i" or "d". + # + # * "a" indicates a text file (the FTP command was ASCII) + # * "i" indicates a binary file (FTP command IMAGE) + # * "d" indicates the contents of a directory should be displayed + # + TYPECODE = ['a', 'i', 'd'].freeze + TYPECODE_PREFIX = ';type='.freeze + + def self.new2(user, password, host, port, path, + typecode = nil, arg_check = true) + typecode = nil if typecode.size == 0 + if typecode && !TYPECODE.include?(typecode) + raise ArgumentError, + "bad typecode is specified: #{typecode}" + end + + # do escape + + self.new('ftp', + [user, password], + host, port, nil, + typecode ? path + TYPECODE_PREFIX + typecode : path, + nil, nil, nil, arg_check) + end + + # + # == Description + # + # Creates a new URI::FTP object from components, with syntax checking. + # + # The components accepted are +userinfo+, +host+, +port+, +path+ and + # +typecode+. + # + # The components should be provided either as an Array, or as a Hash + # with keys formed by preceding the component names with a colon. + # + # If an Array is used, the components must be passed in the order + # [userinfo, host, port, path, typecode] + # + # If the path supplied is absolute, it will be escaped in order to + # make it absolute in the URI. Examples: + # + # require 'uri' + # + # uri = URI::FTP.build(['user:password', 'ftp.example.com', nil, + # '/path/file.> zip', 'i']) + # puts uri.to_s -> ftp://user:password@ftp.example.com/%2Fpath/file.zip;type=a + # + # uri2 = URI::FTP.build({:host => 'ftp.example.com', + # :path => 'ruby/src'}) + # puts uri2.to_s -> ftp://ftp.example.com/ruby/src + # + def self.build(args) + + # Fix the incoming path to be generic URL syntax + # FTP path -> URL path + # foo/bar /foo/bar + # /foo/bar /%2Ffoo/bar + # + if args.kind_of?(Array) + args[3] = '/' + args[3].sub(/^\//, '%2F') + else + args[:path] = '/' + args[:path].sub(/^\//, '%2F') + end + + tmp = Util::make_components_hash(self, args) + + if tmp[:typecode] + if tmp[:typecode].size == 1 + tmp[:typecode] = TYPECODE_PREFIX + tmp[:typecode] + end + tmp[:path] << tmp[:typecode] + end + + return super(tmp) + end + + # + # == Description + # + # Creates a new URI::FTP object from generic URL components with no + # syntax checking. + # + # Unlike build(), this method does not escape the path component as + # required by RFC1738; instead it is treated as per RFC2396. + # + # Arguments are +scheme+, +userinfo+, +host+, +port+, +registry+, +path+, + # +opaque+, +query+ and +fragment+, in that order. + # + def initialize(*arg) + super(*arg) + @typecode = nil + tmp = @path.index(TYPECODE_PREFIX) + if tmp + typecode = @path[tmp + TYPECODE_PREFIX.size..-1] + self.set_path(@path[0..tmp - 1]) + + if arg[-1] + self.typecode = typecode + else + self.set_typecode(typecode) + end + end + end + attr_reader :typecode + + def check_typecode(v) + if TYPECODE.include?(v) + return true + else + raise InvalidComponentError, + "bad typecode(expected #{TYPECODE.join(', ')}): #{v}" + end + end + private :check_typecode + + def set_typecode(v) + @typecode = v + end + protected :set_typecode + + def typecode=(typecode) + check_typecode(typecode) + set_typecode(typecode) + typecode + end + + def merge(oth) # :nodoc: + tmp = super(oth) + if self != tmp + tmp.set_typecode(oth.typecode) + end + + return tmp + end + + # Returns the path from an FTP URI. + # + # RFC 1738 specifically states that the path for an FTP URI does not + # include the / which separates the URI path from the URI host. Example: + # + # ftp://ftp.example.com/pub/ruby + # + # The above URI indicates that the client should connect to + # ftp.example.com then cd pub/ruby from the initial login directory. + # + # If you want to cd to an absolute directory, you must include an + # escaped / (%2F) in the path. Example: + # + # ftp://ftp.example.com/%2Fpub/ruby + # + # This method will then return "/pub/ruby" + # + def path + return @path.sub(/^\//,'').sub(/^%2F/,'/') + end + + def to_s + save_path = nil + if @typecode + save_path = @path + @path = @path + TYPECODE_PREFIX + @typecode + end + str = super + if @typecode + @path = save_path + end + + return str + end + end + @@schemes['FTP'] = FTP +end |