正则表达式的应用类 [代码分享]

冷不防 2021-12-20 11:09 220阅读 0赞

1 ![None.gif][] using  System;  
  2 ![None.gif][] using  System.Collections.Generic;  
  3 ![None.gif][] using  System.Text;  
  4 ![None.gif][] using  System.Text.RegularExpressions;  
  5 ![None.gif][]  
  6 ![None.gif][] namespace  CoreWebLibrary.Text.RegularExpressions  
  7 ![ExpandedBlockStart.gif][]![ContractedBlock.gif][] ![dot.gif][] \{  
 8![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
 9![InBlock.gif][]/// A utility class containing frequently used Regular Expression Patterns  
 10![InBlock.gif][]/// and two utility methods to see if a passed string conforms to the designated  
 11![InBlock.gif][]/// pattern.  
 12![ExpandedSubBlockEnd.gif][]///</summary>  
 13![InBlock.gif][]publicclass Patterns  
 14![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]![dot.gif][]\{  
 15![InBlock.gif][]  
 16![InBlock.gif][]publicconststring EMAIL =@"^(\[0-9a-zA-Z\]+\[-.\_+&\])\*\[0-9a-zA-Z\]+@(\[-0-9a-zA-Z\]+\[.\])+\[a-zA-Z\]\{2,6\}$" ;  
 17![InBlock.gif][]  
 18![InBlock.gif][]publicconststring US\_ZIPCODE =@"^\\d\{5\}$" ;  
 19![InBlock.gif][]publicconststring US\_ZIPCODE\_PLUS\_FOUR =@"^\\d\{5\}((-|\\s)?\\d\{4\})$";  
 20![InBlock.gif][]publicconststring US\_ZIPCODE\_PLUS\_FOUR\_OPTIONAL =@"^\\d\{5\}((-|\\s)?\\d\{4\})?$" ;  
 21![InBlock.gif][]  
 22![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
 23![InBlock.gif][]/// Permissive US Telephone Regex. Does not allow extensions.  
 24![InBlock.gif][]///</summary>  
 25![InBlock.gif][]///<example>  
 26![InBlock.gif][]/// Allows: 324-234-3433, 3242343434, (234)234-234, (234) 234-2343  
 27![ExpandedSubBlockEnd.gif][]///</example>  
 28![InBlock.gif][]publicconststring US\_TELEPHONE =@"^(\[\$\]\{1\}\[0-9\]\{3\}\[\$\]\{1\}\[\\.| |\\-\]\{0,1\}|^\[0-9\]\{3\}\[\\.|\\-| \]?)?\[0-9\]\{3\}(\\.|\\-| )?\[0-9\]\{4\}$";  
 29![InBlock.gif][]  
 30![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
 31![InBlock.gif][]/// This matches a url in the generic format  
 32![InBlock.gif][]/// scheme://authority/path?query\#fragment  
 33![InBlock.gif][]///</summary>  
 34![InBlock.gif][]///<example>  
 35![InBlock.gif][]/// Allows: http://www.yahoo.com, https://www.yahoo.com, ftp://www.yahoo.com  
 36![ExpandedSubBlockEnd.gif][]///</example>  
 37![InBlock.gif][]publicconststring URL =@"^(?<Protocol>\\w+):\\/\\/(?<Domain>\[\\w.\]+\\/?)\\S\*$";  
 38![InBlock.gif][]  
 39![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
 40![InBlock.gif][]/// This matches an ip address in the format xxx-xxx-xxx-xxx  
 41![InBlock.gif][]/// each group of xxx must be less than or equal to 255  
 42![InBlock.gif][]///</summary>  
 43![InBlock.gif][]///<example>  
 44![InBlock.gif][]/// Allows: 123.123.123.123, 192.168.1.1  
 45![ExpandedSubBlockEnd.gif][]///</example>  
 46![InBlock.gif][]publicconststring IP\_ADDRESS =@"^(?<First>2\[0-4\]\\d|25\[0-5\]|\[01\]?\\d\\d?)\\.(?<Second>2\[0-4\]\\d|25\[0-5\]|\[01\]?\\d\\d?)\\.(?<Third>2\[0-4\]\\d|25\[0-5\]|\[01\]?\\d\\d?)\\.(?<Fourth>2\[0-4\]\\d|25\[0-5\]|\[01\]?\\d\\d?)$";  
 47![InBlock.gif][]  
 48![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
 49![InBlock.gif][]/// This matches a date in the format mm/dd/yy  
 50![InBlock.gif][]///</summary>  
 51![InBlock.gif][]///<example>  
 52![InBlock.gif][]/// Allows: 01/05/05, 12/30/99, 04/11/05  
 53![InBlock.gif][]/// Does not allow: 01/05/2000, 2/2/02  
 54![ExpandedSubBlockEnd.gif][]///</example>  
 55![InBlock.gif][]publicconststring DATE\_MM\_DD\_YY =@"^(1\[0-2\]|0\[1-9\])/((\[1-2\]\[0-9\]|3\[0-1\]|0\[1-9\])/\\d\\d)$";  
 56![InBlock.gif][]  
 57![InBlock.gif][]  
 58![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
 59![InBlock.gif][]/// This matches a date in the format mm/yy  
 60![InBlock.gif][]///</summary>  
 61![InBlock.gif][]///<example>  
 62![InBlock.gif][]/// Allows: 01/05, 11/05, 04/99  
 63![InBlock.gif][]/// Does not allow: 1/05, 13/05, 00/05  
 64![ExpandedSubBlockEnd.gif][]///</example>  
 65![InBlock.gif][]publicconststring DATE\_MM\_YY =@"^((0\[1-9\])|(1\[0-2\]))\\/(\\d\{2\})$";  
 66![InBlock.gif][]  
 67![InBlock.gif][]  
 68![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
 69![InBlock.gif][]/// This matches only numbers(no decimals)  
 70![InBlock.gif][]///</summary>  
 71![InBlock.gif][]///<example>  
 72![InBlock.gif][]/// Allows: 0, 1, 123, 4232323, 1212322  
 73![ExpandedSubBlockEnd.gif][]///</example>  
 74![InBlock.gif][]publicconststring IS\_NUMBER\_ONLY =@"^(\[1-9\]\\d\*)$|^0$";  
 75![InBlock.gif][]  
 76![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
 77![InBlock.gif][]/// This matches any string with only alpha characters upper or lower case(A-Z)  
 78![InBlock.gif][]///</summary>  
 79![InBlock.gif][]///<example>  
 80![InBlock.gif][]/// Allows: abc, ABC, abCd, AbCd  
 81![InBlock.gif][]/// Does not allow: A C, abc!, (a,b)  
 82![ExpandedSubBlockEnd.gif][]///</example>  
 83![InBlock.gif][]publicconststring IS\_ALPHA\_ONLY =@"^\[a-zA-Z\]+$";  
 84![InBlock.gif][]  
 85![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
 86![InBlock.gif][]/// This matches any string with only upper case alpha character(A-Z)  
 87![ExpandedSubBlockEnd.gif][]///</summary>  
 88![InBlock.gif][]publicconststring IS\_UPPER\_CASE =@"^\[A-Z\]+$";  
 89![InBlock.gif][]  
 90![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
 91![InBlock.gif][]/// This matches any string with only lower case alpha character(A-Z)  
 92![ExpandedSubBlockEnd.gif][]///</summary>  
 93![InBlock.gif][]publicconststring IS\_LOWER\_CASE =@"^\[a-z\]+$";  
 94![InBlock.gif][]  
 95![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
 96![InBlock.gif][]/// Ensures the string only contains alpha-numeric characters, and  
 97![InBlock.gif][]/// not punctuation, spaces, line breaks, etc.  
 98![InBlock.gif][]///</summary>  
 99![InBlock.gif][]///<example>  
100![InBlock.gif][]/// Allows: ab2c, 112ABC, ab23Cd  
101![InBlock.gif][]/// Does not allow: A C, abc!, a.a  
102![ExpandedSubBlockEnd.gif][]///</example>  
103![InBlock.gif][]publicconststring IS\_ALPHA\_NUMBER\_ONLY =@"^\[a-zA-Z0-9\]+$";  
104![InBlock.gif][]  
105![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
106![InBlock.gif][]/// Validates US Currency. Requires $ sign  
107![InBlock.gif][]/// Allows for optional commas and decimal.  
108![InBlock.gif][]/// No leading zeros.  
109![InBlock.gif][]///</summary>  
110![InBlock.gif][]///<example>Allows: $100,000 or $10000.00 or $10.00 or $.10 or $0 or $0.00  
111![ExpandedSubBlockEnd.gif][]/// Does not allow: $0.10 or 10.00 or 10,000</example>  
112![InBlock.gif][]publicconststring IS\_US\_CURRENCY =@"^\\$((\[1-9\]\\d\*|(\[1-9\]\\d\{0,2\}(\\,\\d\{3\})\*))(\\.\\d\{1,2\})?|(\\.\\d\{1,2\}))$|^\\$\[0\](.00)?$";  
113![InBlock.gif][]  
114![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
115![InBlock.gif][]/// Matches major credit cards including: Visa (length 16, prefix 4);  
116![InBlock.gif][]/// Mastercard (length 16, prefix 51-55);  
117![InBlock.gif][]/// Diners Club/Carte Blanche (length 14, prefix 36, 38, or 300-305);  
118![InBlock.gif][]/// Discover (length 16, prefix 6011);  
119![InBlock.gif][]/// American Express (length 15, prefix 34 or 37).  
120![InBlock.gif][]/// Saves the card type as a named group to facilitate further validation  
121![InBlock.gif][]/// against a "card type" checkbox in a program.  
122![InBlock.gif][]/// All 16 digit formats are grouped 4-4-4-4 with an optional hyphen or space  
123![InBlock.gif][]/// between each group of 4 digits.  
124![InBlock.gif][]/// The American Express format is grouped 4-6-5 with an optional hyphen or space  
125![InBlock.gif][]/// between each group of digits.  
126![InBlock.gif][]/// Formatting characters must be consistant, i.e. if two groups are separated by a hyphen,  
127![InBlock.gif][]/// all groups must be separated by a hyphen for a match to occur.  
128![ExpandedSubBlockEnd.gif][]///</summary>  
129![InBlock.gif][]publicconststring CREDIT\_CARD =@"^(?:(?<Visa>4\\d\{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\}\\1\\d\{4\})|(?(AmericanExpress)(?:\\d\{6\}\\1\\d\{5\})|(?:\\d\{4\}\\1\\d\{4\}\\1\\d\{4\})))$";  
130![InBlock.gif][]  
131![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
132![InBlock.gif][]/// Matches social security in the following format xxx-xx-xxxx  
133![InBlock.gif][]/// where x is a number  
134![InBlock.gif][]///</summary>  
135![InBlock.gif][]///<example>  
136![InBlock.gif][]/// Allows: 123-45-6789, 232-432-1212  
137![ExpandedSubBlockEnd.gif][]///</example>  
138![InBlock.gif][]publicconststring SOCIAL\_SECURITY =@"^\\d\{3\}-\\d\{2\}-\\d\{4\}$";  
139![InBlock.gif][]  
140![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
141![InBlock.gif][]/// Matches x,x where x is a name, spaces are only allowed between comma and name  
142![InBlock.gif][]///</summary>  
143![InBlock.gif][]///<example>  
144![InBlock.gif][]/// Allows: christophersen,eric; christophersen, eric  
145![InBlock.gif][]/// Not allowed: christophersen ,eric;  
146![ExpandedSubBlockEnd.gif][]///</example>  
147![InBlock.gif][]publicconststring NAME\_COMMA\_NAME =@"^\[a-zA-Z\]+,\\s?\[a-zA-Z\]+$";  
148![InBlock.gif][]  
149![InBlock.gif][]private Patterns()  
150![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]![dot.gif][]\{  
151![ExpandedSubBlockEnd.gif][] \}  
152![InBlock.gif][]  
153![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
154![InBlock.gif][]/// Checks to see if the passed input has the passed pattern  
155![InBlock.gif][]///</summary>  
156![InBlock.gif][]///<param name="pattern">The pattern to use</param>  
157![InBlock.gif][]///<param name="input">The input to check</param>  
158![ExpandedSubBlockEnd.gif][]///<returns>True if the input has the pattern, false otherwise</returns>  
159![InBlock.gif][]publicstaticbool HasPattern( string pattern, string input )  
160![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]![dot.gif][]\{  
161![InBlock.gif][] Regex regEx =new Regex(pattern);  
162![InBlock.gif][]return regEx.IsMatch(input);  
163![ExpandedSubBlockEnd.gif][] \}  
164![InBlock.gif][]  
165![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]/\*\*//\*\*//\*\*////<summary>  
166![InBlock.gif][]/// Checks the passed input to make sure it has all the patterns in the  
167![InBlock.gif][]/// passed patterns array  
168![InBlock.gif][]///</summary>  
169![InBlock.gif][]///<param name="patterns">Array of patterns</param>  
170![InBlock.gif][]///<param name="input">String value to check</param>  
171![ExpandedSubBlockEnd.gif][]///<returns>True if the input has all of the patterns, false otherwise.</returns>  
172![InBlock.gif][]publicstaticbool HasPatterns(string\[\] patterns, string input)  
173![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]![dot.gif][]\{  
174![InBlock.gif][]for (int i =0; i < patterns.Length; i\++)  
175![ExpandedSubBlockStart.gif][]![ContractedSubBlock.gif][]![dot.gif][]\{  
176![InBlock.gif][]if (Patterns.HasPattern(patterns\[i\], input) ==false)  
177![InBlock.gif][]returnfalse;  
178![ExpandedSubBlockEnd.gif][] \}  
179![InBlock.gif][]  
180![InBlock.gif][]returntrue;  
181![ExpandedSubBlockEnd.gif][] \}  
182![ExpandedSubBlockEnd.gif][] \}  
183![InBlock.gif][]

转载于:https://www.cnblogs.com/RuiLei/archive/2006/10/02/520330.html

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