老外写的正则表达式的类

发布时间：2020-12-14 02:18:04 所属栏目：百科来源：网络整理

导读：using System; using System.Collections.Generic; System.Text; System.Text.RegularExpressions; namespace CoreWebLibrary.Text.RegularExpressions { /// summary AutilityclasscontainingfrequentlyusedRegularExpressionPatterns andtwoutilitymethods

using System;
using System.Collections.Generic;
System.Text;
System.Text.RegularExpressions;

namespace CoreWebLibrary.Text.RegularExpressions
{
///<summary>
AutilityclasscontainingfrequentlyusedRegularExpressionPatterns
andtwoutilitymethodstoseeifapassedstringconformstothedesignated
pattern.
</summary>
publicclassPatterns
{

conststringEMAIL=@"^([0-9a-zA-Z]+[-._+&])*[0-9a-zA-Z]+@([-0-9a-zA-Z]+[.])+[a-zA-Z]{2,6}$";

stringUS_ZIPCODE=@"^d{5}$";
stringUS_ZIPCODE_PLUS_FOUR=@"^d{5}((-|s)?d{4})$";
stringUS_ZIPCODE_PLUS_FOUR_OPTIONAL=@"^d{5}((-|s)?d{4})?$";

PermissiveUSTelephoneRegex.Doesnotallowextensions.
</summary><example>Allows:324-234-3433,3242343434,(234)234-234,(234)234-2343
</example>stringUS_TELEPHONE=@"^([(]{1}[0-9]{3}[)]{1}[.||-]{0,1}|^[0-9]{3}[.|-|]?)?[0-9]{3}(.|-|)?[0-9]{4}$";

Thismatchesaurlinthegenericformat
scheme://authority/path?query#fragment
Allows:http://www.yahoo.com,https://www.yahoo.com stringURL=@"^(?<Protocol>w+)://(?<Domain>[w.]+/?)S*$";

Thismatchesanipaddressintheformatxxx-xxx-xxx-xxx
eachgroupofxxxmustbelessthanorequalto255
Allows:123.123.123.123,192.168.1.1
stringIP_ADDRESS=@"^(?<First>2[0-4]d|25[0-5]|[01]?dd?).(?<Second>2[0-4]d|25[0-5]|[01]?dd?).(?<Third>2[0-4]d|25[0-5]|[01]?dd?).(?<Fourth>2[0-4]d|25[0-5]|[01]?dd?)$";

Thismatchesadateintheformatmm/dd/yy
Allows:01/05/05,12/30/99,04/11/05
Doesnotallow:01/05/2000,2/2/02
</example>stringDATE_MM_DD_YY=@"^(1[0-2]|0[1-9])/(([1-2][0-9]|3[0-1]|0[1-9])/dd)$";

Thismatchesadateintheformatmm/yy
Allows:01/05,11/05,04/99
Doesnotallow:1/05,13/05,00/05
stringDATE_MM_YY=@"^((0[1-9])|(1[0-2]))/(d{2})$";

Thismatchesonlynumbers(nodecimals)
Allows:0,1,123,4232323,1212322
stringIS_NUMBER_ONLY=@"^([1-9]d*)$|^0$";

Thismatchesanystringwithonlyalphacharactersupperorlowercase(A-Z)
Allows:abc,ABC,abCd,AbCd
Doesnotallow:AC,abc!,(a,b)
stringIS_ALPHA_ONLY=@"^[a-zA-Z]+$";

Thismatchesanystringwithonlyuppercasealphacharacter(A-Z)
stringIS_UPPER_CASE=@"^[A-Z]+$";

Thismatchesanystringwithonlylowercasealphacharacter(A-Z)
stringIS_LOWER_CASE=@"^[a-z]+$";

Ensuresthestringonlycontainsalpha-numericcharacters,and
notpunctuation,spaces,linebreaks,etc.
Allows:ab2c,112ABC,ab23Cd
stringIS_ALPHA_NUMBER_ONLY=@"^[a-zA-Z0-9]+$";

ValidatesUSCurrency.Requires$sign
Allowsforoptionalcommasanddecimal.
Noleadingzeros.
Allows:$100,000or$10000.00or$10.00or$.10or$0or$0.00
Doesnotallow:$0.10or10.00or10,000stringIS_US_CURRENCY=@"^$(([1-9]d*|([1-9]d{0,2}(,d{3})*))(.d{1,2})?|(.d{1,2}))$|^$[0](.00)?$";

Matchesmajorcreditcardsincluding:Visa(length16,prefix4);
Mastercard(length16,prefix51-55);
DinersClub/CarteBlanche(length14,prefix36,38,or300-305);
Discover(length16,prefix6011);
AmericanExpress(length15,prefix34or37).
Savesthecardtypeasanamedgrouptofacilitatefurthervalidation
againsta"cardtype"checkboxinaprogram.
All16digitformatsaregrouped4-4-4-4withanoptionalhyphenorspace
betweeneachgroupof4digits.
TheAmericanExpressformatisgrouped4-6-5withanoptionalhyphenorspace
betweeneachgroupofdigits.
Formattingcharactersmustbeconsistant,i.e.iftwogroupsareseparatedbyahyphen,
allgroupsmustbeseparatedbyahyphenforamatchtooccur.
stringCREDIT_CARD=@"^(?:(?<Visa>4d{3})|(?<Mastercard>5[1-5]d{2})|(?<Discover>6011)|(?<DinersClub>(?:3[68]d{2})|(?:30[0-5]d))|(?<AmericanExpress>3[47]d{2}))([-]?)(?(DinersClub)(?:d{6}1d{4})|(?(AmericanExpress)(?:d{6}1d{5})|(?:d{4}1d{4}1d{4})))$";

Matchessocialsecurityinthefollowingformatxxx-xx-xxxx
wherexisanumber
Allows:123-45-6789,232-432-1212
stringSOCIAL_SECURITY=@"^d{3}-d{2}-d{4}$";

Matchesx,xwherexisaname,spacesareonlyallowedbetweencommaandname
Allows:christophersen,eric;christophersen,eric
Notallowed:christophersen,eric;
stringNAME_COMMA_NAME=@"^[a-zA-Z]+,s?[a-zA-Z]+$";

privatePatterns()
{
}

Checkstoseeifthepassedinputhasthepassedpattern
<paramname="pattern">Thepatterntouse</param><paramname="input">Theinputtocheck<returns>Trueiftheinputhasthepattern,falSEOtherwise</returns>staticboolHasPattern(stringpattern,255)">stringinput)
{
RegexregEx=newRegex(pattern);
returnregEx.IsMatch(input);
}

Checksthepassedinputtomakesureithasallthepatternsinthe
passedpatternsarray
<paramname="patterns">ArrayofpatternsStringvaluetocheckTrueiftheinputhasallofthepatterns,falSEOtherwise.boolHasPatterns(string[]patterns,255)">stringinput)
{
for(inti=0;i<patterns.Length;i++)
{
if(Patterns.HasPattern(patterns[i],input)==false)
returnfalse;
}

true;
}
}

（编辑：李大同）

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