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Class: URI::FTP

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, Generic
Instance Chain:
Inherits: URI::Generic
Defined in: lib/uri/ftp.rb

Overview

FTP URI syntax is defined by RFC1738 section 3.2.

This class will be redesigned because of difference of implementations; the structure of its path. draft-hoffman-ftp-uri-04 is a draft but it is a good summary about the de facto spec. tools.ietf.org/html/draft-hoffman-ftp-uri-04

Constant Summary

::URI - Included

DEFAULT_PARSER, Parser, REGEXP, RFC3986_PARSER

Generic - Inherited

COMPONENT, DEFAULT_PORT

Class Method Summary

Instance Attribute Summary

Generic - Inherited

#fragment

returns the fragment component of the ::URI.

#fragment=

check the fragment v component against the Parser Regexp for :FRAGMENT.

#host

returns the host component of the ::URI.

#host=

Args.

#hostname

extract the host part of the ::URI and unwrap brackets for IPv6 addresses.

#hostname=

set the host part of the ::URI as the argument with brackets for IPv6 addresses.

#opaque

returns the opaque part of the ::URI.

#opaque=

Args.

#password

returns the password component.

#password=

Args.

#path

returns the path component of the ::URI.

#path=

Args.

#port

returns the port component of the ::URI.

#port=

Args.

#query

returns the query component of the ::URI.

#query=

Args.

#registry=,
#scheme

returns the scheme component of the ::URI.

#scheme=

Args.

#user

returns the user component.

#user=

Args.

#userinfo

returns the userinfo, either as 'user' or 'user:password'.

#userinfo=

Sets userinfo, argument is string like 'name:pass'.

#absolute
#hierarchical?

Checks if ::URI has a path.

#relative?

Checks if ::URI is relative.

Instance Method Summary

Generic - Inherited

#+

Alias for Generic#merge.

#-
#==

Compares to URI's.

#absolute?

Checks if ::URI is an absolute one.

#coerce

Args.

#component

Components of the ::URI in the order.

#default_port

Returns default port.

#eql?,
#find_proxy

returns a proxy ::URI.

#hash, #inspect,
#merge

Args.

#merge!

Args.

#normalize

Returns normalized ::URI.

#normalize!

Destructive version of #normalize

#parser

returns the parser to be used.

#route_from

Args.

#route_to

Args.

#select

Args.

#to_s

Constructs String from ::URI.

#component_ary

returns an Array of the components defined from the COMPONENT Array.

#set_host

protected setter for the host component v

#set_opaque

protected setter for the opaque component v

#set_password

protected setter for the password component v

#set_path

protected setter for the path component v

#set_port

protected setter for the port component v

#set_scheme

protected setter for the scheme component v

#set_user

protected setter for the user component v

#set_userinfo

protect setter for the user component, and password if available.

#check_host

check the host v component for RFC2396 compliance and against the Parser Regexp for :HOST.

#check_opaque

check the opaque v component for RFC2396 compliance and against the Parser Regexp for :OPAQUE.

#check_password

check the password v component for RFC2396 compliance and against the Parser Regexp for :USERINFO.

#check_path

check the path v component for RFC2396 compliance and against the Parser Regexp for :ABS_PATH and :REL_PATH.

#check_port

check the port v component for RFC2396 compliance and against the Parser Regexp for :PORT.

#check_scheme

check the scheme v component against the Parser Regexp for :SCHEME.

#check_user

check the user v component for RFC2396 compliance and against the Parser Regexp for :USERINFO.

#check_userinfo

check the user and password.

#escape_userpass

escapes 'user:password' v based on RFC 1738 section 3.1.

#merge0

return base and rel.

#merge_path

Merges a base path base, with relative path rel, returns a modified base path.

#replace!

replace self by other ::URI object.

#route_from0,
#split_path

returns an Array of the path split on '/'.

#split_userinfo

returns the userinfo ui as user, password if properly formatted as 'user:password'.

Constructor Details

.new(scheme, userinfo, host, port, registry, path, opaque, query, fragment, parser = nil, arg_check = false) ⇒ FTP

Description

Creates a new 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.

Raises:

[ GitHub ]

  
# File 'lib/uri/ftp.rb', line 132
def initialize(scheme,
               userinfo, host, port, registry,
               path, opaque,
               query,
               fragment,
               parser = nil,
               arg_check = false)
  raise InvalidURIError unless path
  path = path.sub(/^\//,'')
  path.sub!(/^%2F/,'/')
  super(scheme, userinfo, host, port, registry, path, opaque,
        query, fragment, parser, arg_check)
  @typecode = nil
  if tmp = @path.index(TYPECODE_PREFIX)
    typecode = @path[tmp + TYPECODE_PREFIX.size..-1]
    @path = @path[0..tmp - 1]

    if arg_check
      self.typecode = typecode
    else
      self.set_typecode(typecode)
    end
  end
end

Class Method Details

.build(args)

Description

Creates a new 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
[ GitHub ]

  
# File 'lib/uri/ftp.rb', line 95
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

.new2(user, password, host, port, path, typecode = nil, arg_check = true)

[ GitHub ]

  
# File 'lib/uri/ftp.rb', line 48
def self.new2(user, password, host, port, path,
              typecode = nil, arg_check = true) # :nodoc:
  # Do not use this method!  Not tested.  [Bug #7301]
  # This methods remains just for compatibility,
  # Keep it undocumented until the active maintainer is assigned.
  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

Instance Attribute Details

#typecode (rw)

typecode accessor

see COMPONENT

[ GitHub ]

  
# File 'lib/uri/ftp.rb', line 160
attr_reader :typecode

#typecode=(typecode) (rw)

Args

v

String

Description

public setter for the typecode v. (with validation)

see also #check_typecode

Usage

require 'uri'

uri = URI.parse("ftp://john@ftp.example.com/my_file.img")
#=> #<URI::FTP:0x00000000923650 URL:ftp://john@ftp.example.com/my_file.img>
uri.typecode = "i"
# =>  "i"
uri
#=> #<URI::FTP:0x00000000923650 URL:ftp://john@ftp.example.com/my_file.img;type=i>
[ GitHub ]

  
# File 'lib/uri/ftp.rb', line 208
def typecode=(typecode)
  check_typecode(typecode)
  set_typecode(typecode)
  typecode
end

Instance Method Details

#check_typecode(v) (private)

validates typecode v, returns a true or false boolean

[ GitHub ]

  
# File 'lib/uri/ftp.rb', line 165
def check_typecode(v)
  if TYPECODE.include?(v)
    return true
  else
    raise InvalidComponentError,
      "bad typecode(expected #{TYPECODE.join(', ')}): #{v}"
  end
end

#path

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”

[ GitHub ]

  
# File 'lib/uri/ftp.rb', line 240
def path
  return @path.sub(/^\//,'').sub(/^%2F/,'/')
end

#set_path(v) (protected)

Private setter for the path of the FTP

[ GitHub ]

  
# File 'lib/uri/ftp.rb', line 245
def set_path(v)
  super("/" + v.sub(/^\//, "%2F"))
end

#set_typecode(v) (protected)

Private setter for the typecode v

see also #typecode=

[ GitHub ]

  
# File 'lib/uri/ftp.rb', line 179
def set_typecode(v)
  @typecode = v
end

#to_s

Returns a String representation of the FTP

[ GitHub ]

  
# File 'lib/uri/ftp.rb', line 251
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