hello Arnaud
a minimal email DNS checker could be as simple as read join dns:// next find email "@" but if you really want a maximal validating parser per RCF821 ... you can make some rules, these were derived from http://www.freesoft.org/CIE/RFC/821/15.htm a: charset [#"A" - #"Z" #"a" - #"z"] d: charset {0123456789} special: charset [ #"^(00)" - #"^(1F)" #"^(7F)" #"<" #">" #"(" #")" #"[" #"]" #"\" #"." #"," #";" #":" #"@" #"^"" ] snum: [["25" ["0" | "1" | "3" | "4" | "5"]] | ["2" ["0" | "1" | "3" | "4"]d] |["1" 2 d] | [1 2 d] ] qc: complement charset [#"^(10)" #"^(13)" #"^"" #"\"] c: complement union special charset " " x: ["\" skip] dotnum: [snum "." snum "." snum "." snum] number: [some d] let-dig: union a d ldh-str: [some [let-dig | "-"]] name: [a ldh-str] element: [["#" number] | ["[" dotnum "]"] | name] domain: [element any ["." element]] qtext: [some [qc |x ]] char: [c | x] string: [some char] quoted-string: ["^"" qtext "^""] dot-string: [[string "." dot-string] | string] local-part: [dot-string | quoted-string] mailbox: [local-part "@" copy dmn domain (dns: read join dns:// dmn)] ; to use these rules ... email: [EMAIL PROTECTED] dns: none parse/all email mailbox dns HTH On Sat, 31 Jan 2004 [EMAIL PROTECTED] wrote: > > > Hi all, > > In order to improve an email syntax checking function, i am searching a command to > do the same thing as > > checkdnsrr("rebol.com", "MX") in PHP > > who perform a search in DNS record (return true if found a record). > > I presume i could replace a regular expression like > "^[_\.0-9a-z-]+@([0-9a-z-]+\.)+[a-z]{2,4}$" with his equivalent in a big parse or > something like that ;-) > > Any suggestions welcome (i'd like to replace some old PHP scripts by a small Rebol > script ;-) > > AMIGAlly, > > Arnaud aka bigdan > East of France, Europe > -- > Arnaud Danassie <rebol "at" migazone "dot" com> > Amiga and Pegasos user (http://www.pegasosppc.com fo details) > > -- > To unsubscribe from this list, just send an email to > [EMAIL PROTECTED] with unsubscribe as the subject. > -- To unsubscribe from this list, just send an email to [EMAIL PROTECTED] with unsubscribe as the subject.
