rfc3987.rb

Path: lib/feed_tools/vendor/html5/lib/html5/filters/rfc3987.rb
Last Update: Tue Mar 25 21:42:12 +0000 2008
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adapted from feedvalidator, original copyright license is

Copyright (c) 2002-2006, Sam Ruby, Mark Pilgrim, Joseph Walton, and Phil Ringnalda

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Methods

Constants

ALLOWED_SCHEMES = iana_schemes + ['javascript']
RFC2396 = Regexp.new("^([a-zA-Z][0-9a-zA-Z+\\-\\.]*:)?/{0,2}[0-9a-zA-Z;/?:@&=+$\\.\\-_!~*'()%,#]*$", Regexp::MULTILINE)
URN = Regexp.new("^[Uu][Rr][Nn]:[a-zA-Z0-9][a-zA-Z0-9-]{1,31}:([a-zA-Z0-9()+,\.:=@;$_!*'\-]|%[0-9A-Fa-f]{2})+$")
TAG = Regexp.new("^tag:([a-z0-9\\-\._]+?@)?[a-z0-9\.\-]+?,\d{4}(-\d{2}(-\d{2})?)?:[0-9a-zA-Z;/\?:@&=+$\.\-_!~*'\(\)%,]*(#[0-9a-zA-Z;/\?:@&=+$\.\-_!~*'\(\)%,]*)?$")

Public Instance methods

[Source]

    # File lib/feed_tools/vendor/html5/lib/html5/filters/rfc3987.rb, line 87
87: def is_valid_fully_qualified_uri(value)
88:   is_valid_uri(value, rfc2396_full)
89: end

[Source]

    # File lib/feed_tools/vendor/html5/lib/html5/filters/rfc3987.rb, line 77
77: def is_valid_iri(value)
78:   begin
79:     if value.length > 0
80:       value = value.encode('idna')
81:     end
82:   rescue
83:   end
84:   is_valid_uri(value)
85: end

[Source]

    # File lib/feed_tools/vendor/html5/lib/html5/filters/rfc3987.rb, line 39
39: def is_valid_uri(value, uri_pattern = RFC2396)
40:   scheme = value.split(':').first
41:   scheme.downcase! if scheme
42:   if scheme == 'tag'
43:     if !TAG.match(value)
44:       return false, "invalid-tag-uri"
45:     end
46:   elsif scheme == "urn"
47:     if !URN.match(value)
48:       return false, "invalid-urn"
49:     end
50:   elsif uri_pattern.match(value).to_a.reject{|i| i == ''}.compact.length == 0 || uri_pattern.match(value)[0] != value
51:     urichars = Regexp.new("^[0-9a-zA-Z;/?:@&=+$\\.\\-_!~*'()%,#]$", Regexp::MULTILINE)
52:     if value.length > 0
53:       value.each_byte do |b|
54:         if b < 128 and !urichars.match([b].pack('c*'))
55:           return false, "invalid-uri-char"
56:         end
57:       end
58:     else
59:       begin
60:         if uri_pattern.match(value.encode('idna'))
61:           return false, "uri-not-iri"
62:         end
63:       rescue
64:       end
65:       return false, "invalid-uri"
66:     end
67:   elsif ['http','ftp'].include?(scheme)
68:     if !value.match(%r{^\w+://[^/].*})
69:       return false, "invalid-http-or-ftp-uri"
70:     end
71:   elsif value.index(':') && scheme.match(/^[a-z]+$/) && !ALLOWED_SCHEMES.include?(scheme)
72:     return false, "invalid-scheme"
73:   end
74:   return true, ""
75: end

[Validate]