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isemail.d
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isemail.d
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/**
* Validates an email address according to RFCs 5321, 5322 and others.
*
* Authors: Dominic Sayers $(LT)dominic@sayers.cc$(GT), Jacob Carlborg
* Copyright: Dominic Sayers, Jacob Carlborg 2008-.
* Test schema documentation: Copyright © 2011, Daniel Marschall
* License: $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost Software License 1.0)
* Version: 3.0.13 - Version 3.0 of the original PHP implementation: $(LINK http://www.dominicsayers.com/isemail)
*
* Standards:
* $(UL
* $(LI RFC 5321)
* $(LI RFC 5322)
* )
*
* References:
* $(UL
* $(LI $(LINK http://www.dominicsayers.com/isemail))
* $(LI $(LINK http://tools.ietf.org/html/rfc5321))
* $(LI $(LINK http://tools.ietf.org/html/rfc5322))
* )
*
* Source: $(PHOBOSSRC std/net/_isemail.d)
*/
module std.net.isemail;
// FIXME
import std.range.primitives; // : ElementType;
import std.regex;
import std.traits;
import std.typecons : Flag, Yes, No;
/**
* Check that an email address conforms to RFCs 5321, 5322 and others.
*
* Distinguishes between a Mailbox as defined by RFC 5321 and an addr-spec as
* defined by RFC 5322. Depending on the context, either can be regarded as a
* valid email address.
*
* Note: The DNS check is currently not implemented.
*
* Params:
* email = The email address to check
* checkDNS = If $(D Yes.checkDns) then a DNS check for MX records will be made
* errorLevel = Determines the boundary between valid and invalid addresses.
* Status codes above this number will be returned as-is,
* status codes below will be returned as EmailStatusCode.valid.
* Thus the calling program can simply look for EmailStatusCode.valid
* if it is only interested in whether an address is valid or not. The
* $(D_PARAM errorLevel) will determine how "picky" isEmail() is about
* the address.
*
* If omitted or passed as EmailStatusCode.none then isEmail() will
* not perform any finer grained error checking and an address is
* either considered valid or not. Email status code will either be
* EmailStatusCode.valid or EmailStatusCode.error.
*
* Returns:
* An $(LREF EmailStatus), indicating the status of the email address.
*/
EmailStatus isEmail(Char)(const(Char)[] email, CheckDns checkDNS = No.checkDns,
EmailStatusCode errorLevel = EmailStatusCode.none)
if (isSomeChar!(Char))
{
import std.algorithm.iteration : uniq, filter, map;
import std.algorithm.searching : canFind, maxElement;
import std.array : array, split;
import std.conv : to;
import std.exception : enforce;
import std.string : indexOf, lastIndexOf;
import std.uni : isNumber;
alias tstring = const(Char)[];
alias Token = TokenImpl!(Char);
static ipRegex = ctRegex!(`\b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}`~
`(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$`.to!(const(Char)[]));
static fourChars = ctRegex!(`^[0-9A-Fa-f]{0,4}$`.to!(const(Char)[]));
enum defaultThreshold = 16;
int threshold;
bool diagnose;
if (errorLevel == EmailStatusCode.any)
{
threshold = EmailStatusCode.valid;
diagnose = true;
}
else if (errorLevel == EmailStatusCode.none)
threshold = defaultThreshold;
else
{
diagnose = true;
switch (errorLevel)
{
case EmailStatusCode.warning: threshold = defaultThreshold; break;
case EmailStatusCode.error: threshold = EmailStatusCode.valid; break;
default: threshold = errorLevel;
}
}
auto returnStatus = [EmailStatusCode.valid];
auto context = EmailPart.componentLocalPart;
auto contextStack = [context];
auto contextPrior = context;
tstring token = "";
tstring tokenPrior = "";
tstring[EmailPart] parseData = [EmailPart.componentLocalPart : "", EmailPart.componentDomain : ""];
tstring[][EmailPart] atomList = [EmailPart.componentLocalPart : [""], EmailPart.componentDomain : [""]];
auto elementCount = 0;
auto elementLength = 0;
auto hyphenFlag = false;
auto endOrDie = false;
auto crlfCount = int.min; // int.min == not defined
foreach (ref i, e ; email)
{
token = email.get(i, e);
switch (context)
{
case EmailPart.componentLocalPart:
switch (token)
{
case Token.openParenthesis:
if (elementLength == 0)
returnStatus ~= elementCount == 0 ? EmailStatusCode.comment :
EmailStatusCode.deprecatedComment;
else
{
returnStatus ~= EmailStatusCode.comment;
endOrDie = true;
}
contextStack ~= context;
context = EmailPart.contextComment;
break;
case Token.dot:
if (elementLength == 0)
returnStatus ~= elementCount == 0 ? EmailStatusCode.errorDotStart :
EmailStatusCode.errorConsecutiveDots;
else
{
if (endOrDie)
returnStatus ~= EmailStatusCode.deprecatedLocalPart;
}
endOrDie = false;
elementLength = 0;
elementCount++;
parseData[EmailPart.componentLocalPart] ~= token;
if (elementCount >= atomList[EmailPart.componentLocalPart].length)
atomList[EmailPart.componentLocalPart] ~= "";
else
atomList[EmailPart.componentLocalPart][elementCount] = "";
break;
case Token.doubleQuote:
if (elementLength == 0)
{
returnStatus ~= elementCount == 0 ? EmailStatusCode.rfc5321QuotedString :
EmailStatusCode.deprecatedLocalPart;
parseData[EmailPart.componentLocalPart] ~= token;
atomList[EmailPart.componentLocalPart][elementCount] ~= token;
elementLength++;
endOrDie = true;
contextStack ~= context;
context = EmailPart.contextQuotedString;
}
else
returnStatus ~= EmailStatusCode.errorExpectingText;
break;
case Token.cr:
case Token.space:
case Token.tab:
if ((token == Token.cr) && ((++i == email.length) || (email.get(i, e) != Token.lf)))
{
returnStatus ~= EmailStatusCode.errorCrNoLf;
break;
}
if (elementLength == 0)
returnStatus ~= elementCount == 0 ? EmailStatusCode.foldingWhitespace :
EmailStatusCode.deprecatedFoldingWhitespace;
else
endOrDie = true;
contextStack ~= context;
context = EmailPart.contextFoldingWhitespace;
tokenPrior = token;
break;
case Token.at:
enforce(contextStack.length == 1, "Unexpected item on context stack");
if (parseData[EmailPart.componentLocalPart] == "")
returnStatus ~= EmailStatusCode.errorNoLocalPart;
else if (elementLength == 0)
returnStatus ~= EmailStatusCode.errorDotEnd;
else if (parseData[EmailPart.componentLocalPart].length > 64)
returnStatus ~= EmailStatusCode.rfc5322LocalTooLong;
else if (contextPrior == EmailPart.contextComment ||
contextPrior == EmailPart.contextFoldingWhitespace)
returnStatus ~= EmailStatusCode.deprecatedCommentFoldingWhitespaceNearAt;
context = EmailPart.componentDomain;
contextStack = [context];
elementCount = 0;
elementLength = 0;
endOrDie = false;
break;
default:
if (endOrDie)
{
switch (contextPrior)
{
case EmailPart.contextComment:
case EmailPart.contextFoldingWhitespace:
returnStatus ~= EmailStatusCode.errorTextAfterCommentFoldingWhitespace;
break;
case EmailPart.contextQuotedString:
returnStatus ~= EmailStatusCode.errorTextAfterQuotedString;
break;
default:
throw new Exception("More text found where none is allowed, but "
~"unrecognised prior context: " ~ to!(string)(contextPrior));
}
}
else
{
contextPrior = context;
immutable c = token.front;
if (c < '!' || c > '~' || c == '\n' || Token.specials.canFind(token))
returnStatus ~= EmailStatusCode.errorExpectingText;
parseData[EmailPart.componentLocalPart] ~= token;
atomList[EmailPart.componentLocalPart][elementCount] ~= token;
elementLength++;
}
}
break;
case EmailPart.componentDomain:
switch (token)
{
case Token.openParenthesis:
if (elementLength == 0)
{
returnStatus ~= elementCount == 0 ?
EmailStatusCode.deprecatedCommentFoldingWhitespaceNearAt
: EmailStatusCode.deprecatedComment;
}
else
{
returnStatus ~= EmailStatusCode.comment;
endOrDie = true;
}
contextStack ~= context;
context = EmailPart.contextComment;
break;
case Token.dot:
if (elementLength == 0)
returnStatus ~= elementCount == 0 ? EmailStatusCode.errorDotStart :
EmailStatusCode.errorConsecutiveDots;
else if (hyphenFlag)
returnStatus ~= EmailStatusCode.errorDomainHyphenEnd;
else
{
if (elementLength > 63)
returnStatus ~= EmailStatusCode.rfc5322LabelTooLong;
}
endOrDie = false;
elementLength = 0;
elementCount++;
//atomList[EmailPart.componentDomain][elementCount] = "";
atomList[EmailPart.componentDomain] ~= "";
parseData[EmailPart.componentDomain] ~= token;
break;
case Token.openBracket:
if (parseData[EmailPart.componentDomain] == "")
{
endOrDie = true;
elementLength++;
contextStack ~= context;
context = EmailPart.componentLiteral;
parseData[EmailPart.componentDomain] ~= token;
atomList[EmailPart.componentDomain][elementCount] ~= token;
parseData[EmailPart.componentLiteral] = "";
}
else
returnStatus ~= EmailStatusCode.errorExpectingText;
break;
case Token.cr:
case Token.space:
case Token.tab:
if (token == Token.cr && (++i == email.length || email.get(i, e) != Token.lf))
{
returnStatus ~= EmailStatusCode.errorCrNoLf;
break;
}
if (elementLength == 0)
{
returnStatus ~= elementCount == 0 ?
EmailStatusCode.deprecatedCommentFoldingWhitespaceNearAt
: EmailStatusCode.deprecatedFoldingWhitespace;
}
else
{
returnStatus ~= EmailStatusCode.foldingWhitespace;
endOrDie = true;
}
contextStack ~= context;
context = EmailPart.contextFoldingWhitespace;
tokenPrior = token;
break;
default:
if (endOrDie)
{
switch (contextPrior)
{
case EmailPart.contextComment:
case EmailPart.contextFoldingWhitespace:
returnStatus ~= EmailStatusCode.errorTextAfterCommentFoldingWhitespace;
break;
case EmailPart.componentLiteral:
returnStatus ~= EmailStatusCode.errorTextAfterDomainLiteral;
break;
default:
throw new Exception("More text found where none is allowed, but "
~"unrecognised prior context: " ~ to!(string)(contextPrior));
}
}
immutable c = token.front;
hyphenFlag = false;
if (c < '!' || c > '~' || Token.specials.canFind(token))
returnStatus ~= EmailStatusCode.errorExpectingText;
else if (token == Token.hyphen)
{
if (elementLength == 0)
returnStatus ~= EmailStatusCode.errorDomainHyphenStart;
hyphenFlag = true;
}
else if (!((c > '/' && c < ':') || (c > '@' && c < '[') || (c > '`' && c < '{')))
returnStatus ~= EmailStatusCode.rfc5322Domain;
parseData[EmailPart.componentDomain] ~= token;
atomList[EmailPart.componentDomain][elementCount] ~= token;
elementLength++;
}
break;
case EmailPart.componentLiteral:
switch (token)
{
case Token.closeBracket:
if (returnStatus.maxElement() < EmailStatusCode.deprecated_)
{
auto maxGroups = 8;
size_t index = -1;
auto addressLiteral = parseData[EmailPart.componentLiteral];
auto matchesIp = addressLiteral.matchAll(ipRegex).map!(a => a.hit).array;
if (!matchesIp.empty)
{
index = addressLiteral.lastIndexOf(matchesIp.front);
if (index != 0)
addressLiteral = addressLiteral[0 .. index] ~ "0:0";
}
if (index == 0)
returnStatus ~= EmailStatusCode.rfc5321AddressLiteral;
else if (addressLiteral.compareFirstN(Token.ipV6Tag, 5))
returnStatus ~= EmailStatusCode.rfc5322DomainLiteral;
else
{
auto ipV6 = addressLiteral[5 .. $];
matchesIp = ipV6.split(Token.colon);
immutable groupCount = matchesIp.length;
index = ipV6.indexOf(Token.doubleColon);
if (index == -1)
{
if (groupCount != maxGroups)
returnStatus ~= EmailStatusCode.rfc5322IpV6GroupCount;
}
else
{
if (index != ipV6.lastIndexOf(Token.doubleColon))
returnStatus ~= EmailStatusCode.rfc5322IpV6TooManyDoubleColons;
else
{
if (index == 0 || index == (ipV6.length - 2))
maxGroups++;
if (groupCount > maxGroups)
returnStatus ~= EmailStatusCode.rfc5322IpV6MaxGroups;
else if (groupCount == maxGroups)
returnStatus ~= EmailStatusCode.rfc5321IpV6Deprecated;
}
}
if (ipV6[0 .. 1] == Token.colon && ipV6[1 .. 2] != Token.colon)
returnStatus ~= EmailStatusCode.rfc5322IpV6ColonStart;
else if (ipV6[$ - 1 .. $] == Token.colon && ipV6[$ - 2 .. $ - 1] != Token.colon)
returnStatus ~= EmailStatusCode.rfc5322IpV6ColonEnd;
else if (!matchesIp
.filter!(a => a.matchFirst(fourChars).empty)
.empty)
returnStatus ~= EmailStatusCode.rfc5322IpV6BadChar;
else
returnStatus ~= EmailStatusCode.rfc5321AddressLiteral;
}
}
else
returnStatus ~= EmailStatusCode.rfc5322DomainLiteral;
parseData[EmailPart.componentDomain] ~= token;
atomList[EmailPart.componentDomain][elementCount] ~= token;
elementLength++;
contextPrior = context;
context = contextStack.pop();
break;
case Token.backslash:
returnStatus ~= EmailStatusCode.rfc5322DomainLiteralObsoleteText;
contextStack ~= context;
context = EmailPart.contextQuotedPair;
break;
case Token.cr:
case Token.space:
case Token.tab:
if (token == Token.cr && (++i == email.length || email.get(i, e) != Token.lf))
{
returnStatus ~= EmailStatusCode.errorCrNoLf;
break;
}
returnStatus ~= EmailStatusCode.foldingWhitespace;
contextStack ~= context;
context = EmailPart.contextFoldingWhitespace;
tokenPrior = token;
break;
default:
immutable c = token.front;
if (c > AsciiToken.delete_ || c == '\0' || token == Token.openBracket)
{
returnStatus ~= EmailStatusCode.errorExpectingDomainText;
break;
}
else if (c < '!' || c == AsciiToken.delete_ )
returnStatus ~= EmailStatusCode.rfc5322DomainLiteralObsoleteText;
parseData[EmailPart.componentLiteral] ~= token;
parseData[EmailPart.componentDomain] ~= token;
atomList[EmailPart.componentDomain][elementCount] ~= token;
elementLength++;
}
break;
case EmailPart.contextQuotedString:
switch (token)
{
case Token.backslash:
contextStack ~= context;
context = EmailPart.contextQuotedPair;
break;
case Token.cr:
case Token.tab:
if (token == Token.cr && (++i == email.length || email.get(i, e) != Token.lf))
{
returnStatus ~= EmailStatusCode.errorCrNoLf;
break;
}
parseData[EmailPart.componentLocalPart] ~= Token.space;
atomList[EmailPart.componentLocalPart][elementCount] ~= Token.space;
elementLength++;
returnStatus ~= EmailStatusCode.foldingWhitespace;
contextStack ~= context;
context = EmailPart.contextFoldingWhitespace;
tokenPrior = token;
break;
case Token.doubleQuote:
parseData[EmailPart.componentLocalPart] ~= token;
atomList[EmailPart.componentLocalPart][elementCount] ~= token;
elementLength++;
contextPrior = context;
context = contextStack.pop();
break;
default:
immutable c = token.front;
if (c > AsciiToken.delete_ || c == '\0' || c == '\n')
returnStatus ~= EmailStatusCode.errorExpectingQuotedText;
else if (c < ' ' || c == AsciiToken.delete_)
returnStatus ~= EmailStatusCode.deprecatedQuotedText;
parseData[EmailPart.componentLocalPart] ~= token;
atomList[EmailPart.componentLocalPart][elementCount] ~= token;
elementLength++;
}
break;
case EmailPart.contextQuotedPair:
immutable c = token.front;
if (c > AsciiToken.delete_)
returnStatus ~= EmailStatusCode.errorExpectingQuotedPair;
else if (c < AsciiToken.unitSeparator && c != AsciiToken.horizontalTab || c == AsciiToken.delete_)
returnStatus ~= EmailStatusCode.deprecatedQuotedPair;
contextPrior = context;
context = contextStack.pop();
token = Token.backslash ~ token;
switch (context)
{
case EmailPart.contextComment: break;
case EmailPart.contextQuotedString:
parseData[EmailPart.componentLocalPart] ~= token;
atomList[EmailPart.componentLocalPart][elementCount] ~= token;
elementLength += 2;
break;
case EmailPart.componentLiteral:
parseData[EmailPart.componentDomain] ~= token;
atomList[EmailPart.componentDomain][elementCount] ~= token;
elementLength += 2;
break;
default:
throw new Exception("Quoted pair logic invoked in an invalid context: " ~ to!(string)(context));
}
break;
case EmailPart.contextComment:
switch (token)
{
case Token.openParenthesis:
contextStack ~= context;
context = EmailPart.contextComment;
break;
case Token.closeParenthesis:
contextPrior = context;
context = contextStack.pop();
break;
case Token.backslash:
contextStack ~= context;
context = EmailPart.contextQuotedPair;
break;
case Token.cr:
case Token.space:
case Token.tab:
if (token == Token.cr && (++i == email.length || email.get(i, e) != Token.lf))
{
returnStatus ~= EmailStatusCode.errorCrNoLf;
break;
}
returnStatus ~= EmailStatusCode.foldingWhitespace;
contextStack ~= context;
context = EmailPart.contextFoldingWhitespace;
tokenPrior = token;
break;
default:
immutable c = token.front;
if (c > AsciiToken.delete_ || c == '\0' || c == '\n')
{
returnStatus ~= EmailStatusCode.errorExpectingCommentText;
break;
}
else if (c < ' ' || c == AsciiToken.delete_)
returnStatus ~= EmailStatusCode.deprecatedCommentText;
}
break;
case EmailPart.contextFoldingWhitespace:
if (tokenPrior == Token.cr)
{
if (token == Token.cr)
{
returnStatus ~= EmailStatusCode.errorFoldingWhitespaceCrflX2;
break;
}
if (crlfCount != int.min) // int.min == not defined
{
if (++crlfCount > 1)
returnStatus ~= EmailStatusCode.deprecatedFoldingWhitespace;
}
else
crlfCount = 1;
}
switch (token)
{
case Token.cr:
if (++i == email.length || email.get(i, e) != Token.lf)
returnStatus ~= EmailStatusCode.errorCrNoLf;
break;
case Token.space:
case Token.tab:
break;
default:
if (tokenPrior == Token.cr)
{
returnStatus ~= EmailStatusCode.errorFoldingWhitespaceCrLfEnd;
break;
}
crlfCount = int.min; // int.min == not defined
contextPrior = context;
context = contextStack.pop();
i--;
break;
}
tokenPrior = token;
break;
default:
throw new Exception("Unkown context: " ~ to!(string)(context));
}
if (returnStatus.maxElement() > EmailStatusCode.rfc5322)
break;
}
if (returnStatus.maxElement() < EmailStatusCode.rfc5322)
{
if (context == EmailPart.contextQuotedString)
returnStatus ~= EmailStatusCode.errorUnclosedQuotedString;
else if (context == EmailPart.contextQuotedPair)
returnStatus ~= EmailStatusCode.errorBackslashEnd;
else if (context == EmailPart.contextComment)
returnStatus ~= EmailStatusCode.errorUnclosedComment;
else if (context == EmailPart.componentLiteral)
returnStatus ~= EmailStatusCode.errorUnclosedDomainLiteral;
else if (token == Token.cr)
returnStatus ~= EmailStatusCode.errorFoldingWhitespaceCrLfEnd;
else if (parseData[EmailPart.componentDomain] == "")
returnStatus ~= EmailStatusCode.errorNoDomain;
else if (elementLength == 0)
returnStatus ~= EmailStatusCode.errorDotEnd;
else if (hyphenFlag)
returnStatus ~= EmailStatusCode.errorDomainHyphenEnd;
else if (parseData[EmailPart.componentDomain].length > 255)
returnStatus ~= EmailStatusCode.rfc5322DomainTooLong;
else if ((parseData[EmailPart.componentLocalPart] ~ Token.at ~ parseData[EmailPart.componentDomain]).length >
254)
returnStatus ~= EmailStatusCode.rfc5322TooLong;
else if (elementLength > 63)
returnStatus ~= EmailStatusCode.rfc5322LabelTooLong;
}
auto dnsChecked = false;
if (checkDNS == Yes.checkDns && returnStatus.maxElement() < EmailStatusCode.dnsWarning)
{
assert(false, "DNS check is currently not implemented");
}
if (!dnsChecked && returnStatus.maxElement() < EmailStatusCode.dnsWarning)
{
if (elementCount == 0)
returnStatus ~= EmailStatusCode.rfc5321TopLevelDomain;
if (isNumber(atomList[EmailPart.componentDomain][elementCount].front))
returnStatus ~= EmailStatusCode.rfc5321TopLevelDomainNumeric;
}
returnStatus = array(uniq(returnStatus));
auto finalStatus = returnStatus.maxElement();
if (returnStatus.length != 1)
returnStatus.popFront();
parseData[EmailPart.status] = to!(tstring)(returnStatus);
if (finalStatus < threshold)
finalStatus = EmailStatusCode.valid;
if (!diagnose)
finalStatus = finalStatus < threshold ? EmailStatusCode.valid : EmailStatusCode.error;
auto valid = finalStatus == EmailStatusCode.valid;
tstring localPart = "";
tstring domainPart = "";
if (auto value = EmailPart.componentLocalPart in parseData)
localPart = *value;
if (auto value = EmailPart.componentDomain in parseData)
domainPart = *value;
return EmailStatus(valid, to!(string)(localPart), to!(string)(domainPart), finalStatus);
}
@safe unittest
{
assert(`test.test@iana.org`.isEmail(No.checkDns).statusCode == EmailStatusCode.valid);
assert(`test.test@iana.org`.isEmail(No.checkDns, EmailStatusCode.none).statusCode == EmailStatusCode.valid);
assert(`test@[IPv6:1111:2222:3333:4444:5555:6666::8888]`.isEmail(No.checkDns,
EmailStatusCode.none).statusCode == EmailStatusCode.valid);
assert(`test`.isEmail(No.checkDns, EmailStatusCode.none).statusCode == EmailStatusCode.error);
assert(`(comment)test@iana.org`.isEmail(No.checkDns, EmailStatusCode.none).statusCode == EmailStatusCode.error);
assert(``.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.errorNoDomain);
assert(`test`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.errorNoDomain);
assert(`@`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.errorNoLocalPart);
assert(`test@`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.errorNoDomain);
// assert(`test@io`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.valid,
// `io. currently has an MX-record (Feb 2011). Some DNS setups seem to find it, some don't.`
// ` If you don't see the MX for io. then try setting your DNS server to 8.8.8.8 (the Google DNS server)`);
assert(`@io`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.errorNoLocalPart,
`io. currently has an MX-record (Feb 2011)`);
assert(`@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.errorNoLocalPart);
assert(`test@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.valid);
assert(`test@nominet.org.uk`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.valid);
assert(`test@about.museum`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.valid);
assert(`a@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.valid);
//assert(`test@e.com`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.dnsWarningNoRecord);
// DNS check is currently not implemented
//assert(`test@iana.a`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.dnsWarningNoRecord);
// DNS check is currently not implemented
assert(`test.test@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.valid);
assert(`.test@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.errorDotStart);
assert(`test.@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.errorDotEnd);
assert(`test .. iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.errorConsecutiveDots);
assert(`test_exa-mple.com`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.errorNoDomain);
assert("!#$%&`*+/=?^`{|}~@iana.org".isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.valid);
assert(`test\@test@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.errorExpectingText);
assert(`123@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.valid);
assert(`test@123.com`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.valid);
assert(`test@iana.123`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.rfc5321TopLevelDomainNumeric);
assert(`test@255.255.255.255`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.rfc5321TopLevelDomainNumeric);
assert(`abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghiklm@iana.org`.isEmail(No.checkDns,
EmailStatusCode.any).statusCode == EmailStatusCode.valid);
assert(`abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghiklmn@iana.org`.isEmail(No.checkDns,
EmailStatusCode.any).statusCode == EmailStatusCode.rfc5322LocalTooLong);
// assert(`test@abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghikl.com`.isEmail(No.checkDns,
// EmailStatusCode.any).statusCode == EmailStatusCode.dnsWarningNoRecord);
// DNS check is currently not implemented
assert(`test@abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghiklm.com`.isEmail(No.checkDns,
EmailStatusCode.any).statusCode == EmailStatusCode.rfc5322LabelTooLong);
assert(`test@mason-dixon.com`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.valid);
assert(`test@-iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.errorDomainHyphenStart);
assert(`test@iana-.com`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.errorDomainHyphenEnd);
assert(`test@g--a.com`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.valid);
//assert(`test@iana.co-uk`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
//EmailStatusCode.dnsWarningNoRecord); // DNS check is currently not implemented
assert(`test@.iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.errorDotStart);
assert(`test@iana.org.`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.errorDotEnd);
assert(`test@iana .. com`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.errorConsecutiveDots);
//assert(`a@a.b.c.d.e.f.g.h.i.j.k.l.m.n.o.p.q.r.s.t.u.v.w.x.y.z.a.b.c.d.e.f.g.h.i.j.k.l.m.n.o.p.q.r.s.t.u.v.w.x.y.z`
// `.a.b.c.d.e.f.g.h.i.j.k.l.m.n.o.p.q.r.s.t.u.v.w.x.y.z.a.b.c.d.e.f.g.h.i.j.k.l.m.n.o.p.q.r.s.t.u.v.w.x.y.z`
// `.a.b.c.d.e.f.g.h.i.j.k.l.m.n.o.p.q.r.s.t.u.v`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
// EmailStatusCode.dnsWarningNoRecord); // DNS check is currently not implemented
// assert(`abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghiklm@abcdefghijklmnopqrstuvwxyz`
// `abcdefghijklmnopqrstuvwxyzabcdefghikl.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghikl.`
// `abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghi`.isEmail(No.checkDns,
// EmailStatusCode.any).statusCode == EmailStatusCode.dnsWarningNoRecord);
// DNS check is currently not implemented
assert((`abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghiklm@abcdefghijklmnopqrstuvwxyz`~
`abcdefghijklmnopqrstuvwxyzabcdefghikl.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghikl.`~
`abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghij`).isEmail(No.checkDns,
EmailStatusCode.any).statusCode == EmailStatusCode.rfc5322TooLong);
assert((`a@abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghikl.abcdefghijklmnopqrstuvwxyz`~
`abcdefghijklmnopqrstuvwxyzabcdefghikl.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghikl.`~
`abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.hij`).isEmail(No.checkDns,
EmailStatusCode.any).statusCode == EmailStatusCode.rfc5322TooLong);
assert((`a@abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghikl.abcdefghijklmnopqrstuvwxyz`~
`abcdefghijklmnopqrstuvwxyzabcdefghikl.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghikl.`~
`abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.hijk`).isEmail(No.checkDns,
EmailStatusCode.any).statusCode == EmailStatusCode.rfc5322DomainTooLong);
assert(`"test"@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.rfc5321QuotedString);
assert(`""@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.rfc5321QuotedString);
assert(`"""@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.errorExpectingText);
assert(`"\a"@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.rfc5321QuotedString);
assert(`"\""@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.rfc5321QuotedString);
assert(`"\"@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.errorUnclosedQuotedString);
assert(`"\\"@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.rfc5321QuotedString);
assert(`test"@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode == EmailStatusCode.errorExpectingText);
assert(`"test@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.errorUnclosedQuotedString);
assert(`"test"test@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.errorTextAfterQuotedString);
assert(`test"text"@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.errorExpectingText);
assert(`"test""test"@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.errorExpectingText);
assert(`"test"."test"@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.deprecatedLocalPart);
assert(`"test\ test"@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.rfc5321QuotedString);
assert(`"test".test@iana.org`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.deprecatedLocalPart);
assert("\"test\u0000\"@iana.org".isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.errorExpectingQuotedText);
assert("\"test\\\u0000\"@iana.org".isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.deprecatedQuotedPair);
assert(`"abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz abcdefghj"@iana.org`.isEmail(No.checkDns,
EmailStatusCode.any).statusCode == EmailStatusCode.rfc5322LocalTooLong,
`Quotes are still part of the length restriction`);
assert(`"abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz abcdefg\h"@iana.org`.isEmail(No.checkDns,
EmailStatusCode.any).statusCode == EmailStatusCode.rfc5322LocalTooLong,
`Quoted pair is still part of the length restriction`);
assert(`test@[255.255.255.255]`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.rfc5321AddressLiteral);
assert(`test@a[255.255.255.255]`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.errorExpectingText);
assert(`test@[255.255.255]`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.rfc5322DomainLiteral);
assert(`test@[255.255.255.255.255]`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.rfc5322DomainLiteral);
assert(`test@[255.255.255.256]`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.rfc5322DomainLiteral);
assert(`test@[1111:2222:3333:4444:5555:6666:7777:8888]`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.rfc5322DomainLiteral);
assert(`test@[IPv6:1111:2222:3333:4444:5555:6666:7777]`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.rfc5322IpV6GroupCount);
assert(`test@[IPv6:1111:2222:3333:4444:5555:6666:7777:8888]`.isEmail(No.checkDns, EmailStatusCode.any).statusCode
== EmailStatusCode.rfc5321AddressLiteral);
assert(`test@[IPv6:1111:2222:3333:4444:5555:6666:7777:8888:9999]`.isEmail(No.checkDns,
EmailStatusCode.any).statusCode == EmailStatusCode.rfc5322IpV6GroupCount);
assert(`test@[IPv6:1111:2222:3333:4444:5555:6666:7777:888G]`.isEmail(No.checkDns,
EmailStatusCode.any).statusCode == EmailStatusCode.rfc5322IpV6BadChar);
assert(`test@[IPv6:1111:2222:3333:4444:5555:6666::8888]`.isEmail(No.checkDns,
EmailStatusCode.any).statusCode == EmailStatusCode.rfc5321IpV6Deprecated);
assert(`test@[IPv6:1111:2222:3333:4444:5555::8888]`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.rfc5321AddressLiteral);
assert(`test@[IPv6:1111:2222:3333:4444:5555:6666::7777:8888]`.isEmail(No.checkDns,
EmailStatusCode.any).statusCode == EmailStatusCode.rfc5322IpV6MaxGroups);
assert(`test@[IPv6::3333:4444:5555:6666:7777:8888]`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.rfc5322IpV6ColonStart);
assert(`test@[IPv6:::3333:4444:5555:6666:7777:8888]`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.rfc5321AddressLiteral);
assert(`test@[IPv6:1111::4444:5555::8888]`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.rfc5322IpV6TooManyDoubleColons);
assert(`test@[IPv6:::]`.isEmail(No.checkDns, EmailStatusCode.any).statusCode ==
EmailStatusCode.rfc5321AddressLiteral);
assert(`test@[IPv6:1111:2222:3333:4444:5555:255.255.255.255]`.isEmail(No.checkDns,
EmailStatusCode.any).statusCode == EmailStatusCode.rfc5322IpV6GroupCount);
assert(`test@[IPv6:1111:2222:3333:4444:5555:6666:255.255.255.255]`.isEmail(No.checkDns,
EmailStatusCode.any).statusCode == EmailStatusCode.rfc5321AddressLiteral);
assert(`test@[IPv6:1111:2222:3333:4444:5555:6666:7777:255.255.255.255]`.isEmail(No.checkDns,
EmailStatusCode.any).statusCode == EmailStatusCode.rfc5322IpV6GroupCount);