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
A Default port of 21 for URI::FTP
Typecode prefix
';type='
typecode accessor
# File tmp/rubies/ruby-2.4.10/lib/uri/ftp.rb, line 96
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 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=i uri2 = URI::FTP.build({:host => 'ftp.example.com', :path => 'ruby/src'}) puts uri2.to_s -> ftp://ftp.example.com/ruby/src
# File tmp/rubies/ruby-2.4.10/lib/uri/ftp.rb, line 133
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
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.
# File tmp/rubies/ruby-2.4.10/lib/uri/ftp.rb, line 166
def check_typecode(v)
if TYPECODE.include?(v)
return true
else
raise InvalidComponentError,
"bad typecode(expected #{TYPECODE.join(', ')}): #{v}"
end
end
validates typecode v, returns a true or false boolean
# File tmp/rubies/ruby-2.4.10/lib/uri/ftp.rb, line 241
def path
return @path.sub(/^\//,'').sub(/^%2F/,'/')
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”
# File tmp/rubies/ruby-2.4.10/lib/uri/ftp.rb, line 246
def set_path(v)
super("/" + v.sub(/^\//, "%2F"))
end
Private setter for the path of the URI::FTP
# File tmp/rubies/ruby-2.4.10/lib/uri/ftp.rb, line 180
def set_typecode(v)
@typecode = v
end
Private setter for the typecode v
see also URI::FTP.typecode=
# File tmp/rubies/ruby-2.4.10/lib/uri/ftp.rb, line 252
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
Returns a String representation of the URI::FTP
# File tmp/rubies/ruby-2.4.10/lib/uri/ftp.rb, line 209
def typecode=(typecode)
check_typecode(typecode)
set_typecode(typecode)
typecode
end
Args
v-
String
Description
public setter for the typecode v. (with validation)
see also URI::FTP.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>