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Expressions by User

   Displaying page 1 of 1 pages; Items 1 to 16
Title Test Details Pattern Title
Expression
\w?<\s?\/?[^\s>]+(\s+[^"'=]+(=("[^"]*")|('[^\']*')|([^\s"'>]*))?)*\s*\/?>
Description
Matches tags
Matches
<world www="hello" />
Non-Matches
<>>>world www="hello" />
Author Rating: Not yet rated. Darren Neimke
Title Test Details Pattern Title
Expression
&quot;([^&quot;](?:\\.|[^\\&quot;]*)*)&quot;
Description
Matches C style strings allowing for escaped string delimiters to be included in the match. ALTERED 13-Dec-2003 ------------------- Previous pattern was : &quot;([^&quot;](?:\\.|[^\\&quot;]*)*)&quot; Changed to: &quot;([^&quot;]*(?:\\.|[^\\&quot;]*)*)&quot; Making the first character after the opening quote optional allows the pattern to match on empty quotes: &quot;&quot;.
Matches
&quot;This is a \&quot;string\&quot;.&quot;
Non-Matches
&quot;This is a \&quot;string\&quot;.
Author Rating: The rating for this expression. Darren Neimke
Title Test Details Pattern Title
Expression
(\w[-._\w]*\w@\w[-._\w]*\w\.\w{2,3})
Description
This is my all-time favourite e-mail validator. I've used it for years and it's never failed me :-)
Matches
foo@bar.com | foobar@foobar.com.au
Non-Matches
foo@bar | $$$@bar.com
Author Rating: The rating for this expression. Darren Neimke
Title Test Details Pattern Title
Expression
^([a-zA-Z]\:)(\\[^\\/:*?<>"|]*(?<![ ]))*(\.[a-zA-Z]{2,6})$
Description
Matches filenames. UPDATED on 1st Jan 2004.
Matches
C:\di___r\fi_sysle.txt | c:\dir\filename.txt
Non-Matches
c:\dir\file?name.txt
Author Rating: Not yet rated. Darren Neimke
Title Test Details Pattern Title
Expression
(\b\w+\b) # Match a word and capture it \s+ \1 # Use backreference \1 to match double-ups
Description
Matches
This is is a match
Non-Matches
This isn't!
Author Rating: Not yet rated. Darren Neimke
Title Test Details Pattern Title
Expression
(?'openingTag'&lt;) \s*? (?'tagName'\w+) # Once we've got the tagname, match zero # or more attribute sequences (\s*? # Atomic Grouping for efficiency (?&gt; (?!=[\/\?]?&gt;) # Lookahead so that we can fail quickly # match Attribute pieces (?'attribName'\w+) (?:\s* (?'attribSign'=) \s* ) (?'attribValue' (?:\'[^\']*\'|\&quot;[^\&quot;]*\&quot;|[^ &gt;]+) ) ) )* \s*? # Closing Tag can be either &gt; or /&gt; (?'closeTag'[\/\?]?&gt;)
Description
Matches and segments the sections of an opening tag. For more detailed information refer to this blog entry: http://weblogs.asp.net/dneimke/posts/25616.aspx
Matches
&lt;head&gt; | &lt;script language=javascript&gt; | &lt;input type=submit &gt;
Non-Matches
&lt;/head&gt;
Author Rating: Not yet rated. Darren Neimke
Title Test Details Pattern Title
Expression
# Greedy, no-backtracking and only named groups capture. (?n) ^ ( (?'allowDay'Sun|Mon|Fri) | (Sat # if we match 'ur' then constrain # the next char with a lookahead # for 'd' so that we don't match on # Satur. (?'allowDay'ur(?=d))? ) | ( ( ( T ( # Accepts &quot;Tu.&quot;, &quot;Tue.&quot; ue? | # Accepts &quot;Th.&quot;, &quot;Thu.&quot; or &quot;Thur.&quot; h(ur?)? ) ) | ( Wed # if &quot;ne&quot; matched then constrain # the next chars with a lookahead # for 'sd' so that we don't match on # Wedne. (ne(?=sd))? ) ) ( # If 'Tue' or 'Thur' or 'Wedne' matched # then match 's' in the &quot;allowDay&quot; Group. (?&lt;=(e|r)) (?'allowDay's) )? ) ) # Optional ending match of &quot;day&quot; or &quot;.&quot; ( # if Group[allowDay] succeeded then allow # the letters &quot;day&quot; or a full-stop. If it # did not succeed, a full-stop is required. (?(allowDay)day)|\. )? $
Description
Matches
Th | Thu | Thurs
Non-Matches
Thursd | T | Thursdays
Author Rating: The rating for this expression. Darren Neimke
Title Test Details Pattern Title
Expression
(\d{4,6})
Description
Simple Postcode - this is the first test of the new WebService :-)
Matches
4078 | 539999
Non-Matches
dfasdf | afasdfsad
Author Rating: Not yet rated. Darren Neimke
Title Test Details Pattern Title
Expression
^(\d+|[a-zA-Z]+)$
Description
Tests for all numbers OR all letters (upper or lower case) ( posted from WebService - http://regexlib.com/webservices.asmx?op=Save ) ( updated from WebService - http://regexlib.com/webservices.asmx?op=Save )
Matches
aaaaadddaaaaa | 1166633337
Non-Matches
1n | ppppp99
Author Rating: Not yet rated. Darren Neimke
Title Test Details Pattern Title
Expression
(?s)/\*.*\*/
Description
Matches
/* .................... */ | /* imagine lots of lines here */
Non-Matches
*/ malformed opening tag */ | /* malformed closing tag /*
Author Rating: Not yet rated. Darren Neimke
Title Test Details Pattern Title
Expression
.*?$(?<!\.aspx)
Description
Matches a string to ensure that it does not end with .aspx; sure, you'd probably use string handling to do something this simple but, in the real world you'd whack a regex which validates a valid url to the front of this. The pattern was created by Wayne King; you can read about it here: http://scottwater.com/blog/posts/10204.aspx
Matches
http://weblogs.asp.net/DNeimke/blah.gif
Non-Matches
http://weblogs.asp.net/DNeimke/Default.aspx
Author Rating: Not yet rated. Darren Neimke
Title Test Details Pattern Title
Expression
^ISBN\s(?=[-0-9xX ]{13}$)(?:[0-9]+[- ]){3}[0-9]*[xX0-9]$
Description
This pattern validates ISBN numbers. I've written a full description about it here: http://regexblogs.com/dneimke/posts/201.aspx
Matches
ISBN 90-70002-34-5 | ISBN 90-70002-34-x
Non-Matches
ISBN 90-70002-34-5x | ISBN 90-700-02-34-5
Author Rating: Not yet rated. Darren Neimke
Title Test Details Pattern Title
Expression
(?<=^|[\s ]+)[^\!\@\%\$\s ]*([\!\@\%\$][^\!\@\%\$\s ]*){2,}(?=[\s ]+|$)
Description
That pattern will filter for words that contain more than 1 instance of any of the following characters: ! $ % @. May be useful in filtering for spam. Requires lookahead and lookbehind support in the underlying regex engine.
Matches
f%c$ | v!@gra | v@gr@
Non-Matches
f%ck | viagra
Author Rating: Not yet rated. Darren Neimke
Title Test Details Pattern Title
Expression
(?n) (?# ExplicitCapture - capture named groups only ) ^ -? (?# Optional sign ) ( \d{1,8}(\.\d{1,2})? (?# Decimal point and trailing digits optional ) | \d{0,8}(\.\d{1,2}) (?# Leading digits optional ) ) $
Description
This pattern matches a simple Decimal Literal. Leading digits limited to 8 and does not support commification.
Matches
-14 | -14.26 | -.26
Non-Matches
-14. | -14.263 | -
Author Rating: Not yet rated. Darren Neimke
Title Test Details Pattern Title
Expression
(?'DateLiteral' (?# Per the VB Spec : DateLiteral ::= '#' [ Whitespace+ ] DateOrTime [ Whitespace+ ] '#' ) \#\s* (?'DateOrTime' (?# DateOrTime ::= DateValue Whitespace+ TimeValue | DateValue | TimeValue ) (?'DateValue' (?# DateValue ::= Whitespace+ TimeValue | DateValue | TimeValue ) ( (?# DateValue ::= MonthValue / DayValue / YearValue | MonthValue - DayValue - YearValue ) (?'Month'(0?[1-9])|1[0-2]) (?# Month 01 - 12 ) (?'Sep'[-/]) (?# Date separator '-' or '/' ) (?'Day'0?[1-9]|[12]\d|3[01]) (?# Day 01 - 31 ) \k'Sep' (?# whatever date separator was previously matched ) (?'Year'\d{1,4}) \s+ (?# TimeValue ::= HourValue : MinuteValue [ : SecondValue ] [ WhiteSpace+ ] [ AMPM ] ) (?'HourValue'(0?[1-9])|1[0-9]|2[0-4]) (?# Hour 01 - 24 ) [:] (?'MinuteValue'0?[1-9]|[1-5]\d|60) (?# Minute 01 - 60 ) [:] (?'SecondValue':0?[1-9]|[1-5]\d|60)? (?# Optional Minute :01 - :60 ) \s* (?'AMPM'[AP]M)? ) | ( (?# DateValue ::= MonthValue / DayValue / YearValue | MonthValue - DayValue - YearValue ) (?'Month'(0?[1-9])|1[0-2]) (?# Month 01 - 12 ) (?'Sep'[-/]) (?# Date separator '-' or '/' ) (?'Day'0?[1-9]|[12]\d|3[01]) (?# Month 01 - 31 ) \k'Sep' (?# whatever date separator was previously matched ) (?'Year'\d{4}) ) | ( (?# TimeValue ::= HourValue : MinuteValue [ : SecondValue ] [ WhiteSpace+ ] [ AMPM ] ) (?'HourValue'(0?[1-9])|1[0-9]|2[0-4]) (?# Hour 01 - 24 ) [:] (?'MinuteValue'0?[1-9]|[1-5]\d|60) (?# Minute 01 - 60 ) [:] (?'SecondValue':0?[1-9]|[1-5]\d|60)? (?# Optional Minute :01 - :60 ) \s* (?'AMPM'[AP]M)? ) ) ) \s*\# )
Description
Match the VB Language specification BNF for DateTime literal. http://msdn.microsoft.com/library/en-us/vbls7/html/vblrfvbspec2_4_6.asp?frame=true DateLiteral ::= # [ Whitespace+ ] DateOrTime [ Whitespace+ ] # DateOrTime ::= DateValue Whitespace+ TimeValue | DateValue | TimeValue DateValue ::= MonthValue / DayValue / YearValue | MonthValue – DayValue - YearValue TimeValue ::= HourValue : MinuteValue [ : SecondValue ] [ WhiteSpace+ ] [ AMPM ] MonthValue ::= IntLiteral DayValue ::= IntLiteral YearValue ::= IntLiteral HourValue ::= IntLiteral MinuteValue ::= IntLiteral SecondValue ::= IntLiteral AMPM ::= AM | PM
Matches
# 8/23/1970 3:45:39AM # | # 8/23/1970 #
Non-Matches
## | # 23/8/1970 #
Author Rating: The rating for this expression. Darren Neimke
Title Test Details Pattern Title
Expression
^( 100(?:\.0{1,2})? | 0*?\.\d{1,2} | \d{1,2}(?:\.\d{1,2})? )% $
Description
Matches a percentage between 0 and 100 (inclusive). Accepts up to 2 decimal places.
Matches
0% | 100% | .17%
Non-Matches
101% | -17 | 99.006%
Author Rating: Not yet rated. Darren Neimke
   Displaying page 1 of 1 pages; Items 1 to 16

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