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January 17, 2018 06:12
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| # encoding: utf-8 | |
| # # | |
| # # RFC822 Email Address Regex | |
| # # -------------------------- | |
| # # | |
| # # Originally written by Cal Henderson | |
| # # c.f. http://iamcal.com/publish/articles/php/parsing_email/ | |
| # # | |
| # # Translated to Ruby by Tim Fletcher, with changes suggested by Dan Kubb. | |
| # # | |
| # # Licensed under a Creative Commons Attribution-ShareAlike 2.5 License | |
| # # http://creativecommons.org/licenses/by-sa/2.5/ | |
| # # | |
| # module RFC822 | |
| # EmailAddress = begin | |
| # qtext = '[^\\x0d\\x22\\x5c\\x80-\\xff]' | |
| # dtext = '[^\\x0d\\x5b-\\x5d\\x80-\\xff]' | |
| # atom = '[^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-' + | |
| # '\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+' | |
| # quoted_pair = '\\x5c[\\x00-\\x7f]' | |
| # domain_literal = "\\x5b(?:#{dtext}|#{quoted_pair})*\\x5d" | |
| # quoted_string = "\\x22(?:#{qtext}|#{quoted_pair})*\\x22" | |
| # domain_ref = atom | |
| # sub_domain = "(?:#{domain_ref}|#{domain_literal})" | |
| # word = "(?:#{atom}|#{quoted_string})" | |
| # domain = "#{sub_domain}(?:\\x2e#{sub_domain})*" | |
| # local_part = "#{word}(?:\\x2e#{word})*" | |
| # addr_spec = "#{local_part}\\x40#{domain}" | |
| # pattern = /\A#{addr_spec}\z/ | |
| # end | |
| # end | |
| # coding:utf-8 | |
| module RFC822 | |
| class Email | |
| def self.compile(string) | |
| Regexp.new string, nil, 'n' | |
| end | |
| # Patterns | |
| QTEXT = compile "[^\\x0d\\x22\\x5c\\x80-\\xff]" | |
| DTEXT = compile "[^\\x0d\\x5b-\\x5d\\x80-\\xff]" | |
| ATOM_CORE = compile "[^\\x00-\\x20\\x22\\x28\\x29\\x2c\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]+" | |
| ATOM_EDGE = compile "[^\\x00-\\x20\\x22\\x28\\x29\\x2c-\\x2e\\x3a-\\x3c\\x3e\\x40\\x5b-\\x5d\\x7f-\\xff]" | |
| ATOM = compile "(?:#{ATOM_EDGE}{1,2}|#{ATOM_EDGE}#{ATOM_CORE}#{ATOM_EDGE})" | |
| QPAIR = compile "\\x5c[\\x00-\\x7f]" | |
| QSTRING = compile "\\x22(?:#{QTEXT}|#{QPAIR})*\\x22" | |
| WORD = compile "(?:#{ATOM}|#{QSTRING})" | |
| DOMAIN_PT = compile "(?:[a-zA-Z0-9][\-a-zA-Z0-9]*[a-zA-Z0-9]|[a-zA-Z0-9]+)" | |
| DOMAIN = compile "#{DOMAIN_PT}(?:\\x2e#{DOMAIN_PT})*" | |
| LOCAL_PT = compile "#{WORD}(?:\\x2e#{WORD})*" | |
| ADDRESS = compile "#{LOCAL_PT}\\x40#{DOMAIN}" | |
| REGEXP = /\A#{ ADDRESS }\z/ | |
| end | |
| end |
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