[Resolvido] Regex - Validação de Email [Dúvida]

[gadelhas 0]

Viva;

Estou a fazer um programa em que preciso de validar um email. Para o efeito recorro ao Regex.

Com o seguinte código, consigo validar emails do tipo: gadelhas@gadelhas.pt

Dim strRegex As String = "^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}" + "\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\" + ".)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$"

Até aqui funciona tudo bem, contudo queria validar um email do tipo: Gadelhas Mail <gadelhas@gadelhas.pt> mas não estou a conseguir chegar lá com a construção Regex. Alguém me dá uma ajudinha?

Obrigado

Edited February 19, 2013 by thoga31
GeSHi

[pmg 85]

Some people, when confronted with a problem, think, “I know, I’ll use regular exp<b></b>ressions.”

Now they have two problems.

-- Jamie Zawinski

A expressao regular para enderecos de mail e esta:

(??:\r\n)?[ \t])*(??:(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t]
)+|\Z|(?=[\["()<>@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(??:\r\n)?[ \t]))*"(??:
\r\n)?[ \t])*)(?:\.(??:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(
?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(??:\r\n)?[ 
\t]))*"(??:\r\n)?[ \t])*))*@(??:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\0
31]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\
](??:\r\n)?[ \t])*)(?:\.(??:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+
(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](?:
(?:\r\n)?[ \t])*))*|(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z
|(?=[\["()<>@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(??:\r\n)?[ \t]))*"(??:\r\n)
?[ \t])*)*\<(??:\r\n)?[ \t])*(?:@(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\
r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[
\t])*)(?:\.(??:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)
?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t]
)*))*(?:,@(??:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[
\t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t])*
)(?:\.(??:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t]
)+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t])*))*)
*?:(?:\r\n)?[ \t])*)?(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+
|\Z|(?=[\["()<>@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(??:\r\n)?[ \t]))*"(??:\r
\n)?[ \t])*)(?:\.(??:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:
\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(??:\r\n)?[ \t
]))*"(??:\r\n)?[ \t])*))*@(??:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031
]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](
??:\r\n)?[ \t])*)(?:\.(??:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(?
?:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](??
:\r\n)?[ \t])*))*\>(??:\r\n)?[ \t])*)|(?:[^()<>@,;:\\".\[\] \000-\031]+(??
?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(??:\r\n)?
[ \t]))*"(??:\r\n)?[ \t])*)*?:(?:\r\n)?[ \t])*(??:(?:[^()<>@,;:\\".\[\] 
\000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|"(?:[^\"\r\\]|
\\.|(??:\r\n)?[ \t]))*"(??:\r\n)?[ \t])*)(?:\.(??:\r\n)?[ \t])*(?:[^()<>
@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|"
(?:[^\"\r\\]|\\.|(??:\r\n)?[ \t]))*"(??:\r\n)?[ \t])*))*@(??:\r\n)?[ \t]
)*(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\
".\[\]]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t])*)(?:\.(??:\r\n)?[ \t])*(?
:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[
\]]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t])*))*|(?:[^()<>@,;:\\".\[\] \000-
\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(
??:\r\n)?[ \t]))*"(??:\r\n)?[ \t])*)*\<(??:\r\n)?[ \t])*(?:@(?:[^()<>@,;
:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([
^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t])*)(?:\.(??:\r\n)?[ \t])*(?:[^()<>@,;:\\"
.\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\
]\r\\]|\\.)*\](??:\r\n)?[ \t])*))*(?:,@(??:\r\n)?[ \t])*(?:[^()<>@,;:\\".\
[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\
r\\]|\\.)*\](??:\r\n)?[ \t])*)(?:\.(??:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] 
\000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]
|\\.)*\](??:\r\n)?[ \t])*))*)*?:(?:\r\n)?[ \t])*)?(?:[^()<>@,;:\\".\[\] \0
00-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\
.|(??:\r\n)?[ \t]))*"(??:\r\n)?[ \t])*)(?:\.(??:\r\n)?[ \t])*(?:[^()<>@,
;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|"(?
:[^\"\r\\]|\\.|(??:\r\n)?[ \t]))*"(??:\r\n)?[ \t])*))*@(??:\r\n)?[ \t])*
(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".
\[\]]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t])*)(?:\.(??:\r\n)?[ \t])*(?:[
^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\]
]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t])*))*\>(??:\r\n)?[ \t])*)(?:,\s*(
??:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\
".\[\]]))|"(?:[^\"\r\\]|\\.|(??:\r\n)?[ \t]))*"(??:\r\n)?[ \t])*)(?:\.(?
?:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[
\["()<>@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(??:\r\n)?[ \t]))*"(??:\r\n)?[ \t
])*))*@(??:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t
])+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t])*)(?
:\.(??:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|
\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t])*))*|(?:
[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".\[\
]]))|"(?:[^\"\r\\]|\\.|(??:\r\n)?[ \t]))*"(??:\r\n)?[ \t])*)*\<(??:\r\n)
?[ \t])*(?:@(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["
()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t])*)(?:\.(??:\r\n)
?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>
@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t])*))*(?:,@(??:\r\n)?[
\t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,
;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t])*)(?:\.(??:\r\n)?[ \t]
)*(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\
".\[\]]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t])*))*)*?:(?:\r\n)?[ \t])*)?
(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\["()<>@,;:\\".
\[\]]))|"(?:[^\"\r\\]|\\.|(??:\r\n)?[ \t]))*"(??:\r\n)?[ \t])*)(?:\.(??:
\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z|(?=[\[
"()<>@,;:\\".\[\]]))|"(?:[^\"\r\\]|\\.|(??:\r\n)?[ \t]))*"(??:\r\n)?[ \t])
*))*@(??:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])
+|\Z|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t])*)(?:\
.(??:\r\n)?[ \t])*(?:[^()<>@,;:\\".\[\] \000-\031]+(??:(?:\r\n)?[ \t])+|\Z
|(?=[\["()<>@,;:\\".\[\]]))|\[([^\[\]\r\\]|\\.)*\](??:\r\n)?[ \t])*))*\>(?
?:\r\n)?[ \t])*))*)?;\s*)

copia de http://www.ex-parrot.com/pdw/Mail-RFC822-Address.html

Edited February 19, 2013 by pmg

[gadelhas 0]

Some people, when confronted with a problem, think, “I know, I’ll use regular expressions.”

Now they have two problems.

-- Jamie Zawinski

pmg, Obrigado pela rápida resposta ao meu problema. Não discordo com a citação apresentada, contudo se fosse para aplicar à risca, não se tinha inventado as expressões regulares.

Por acaso estava a utilizar o RFC822 para me guiar, e acabei por utilizar esta expressão com sucesso.

Se surgir algum bug entretanto na mesma, pois como é óbvio não testei as hipóteses todas, coloco aqui a correcção.

\b[!#$%&'*+./0-9=?_`a-z{|}~^-]+@[.0-9a-z-]+\.[a-z]{2,6}\b

Mais uma vez, Obrigado!