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• Regex to replace relative link with root relative link

  - by Kendall Hopkins

  I have a string of text that contains html with all different types of links (relative, absolute, root-relative). I need a regex that can be executed by PHP's preg_replace to replace all relative links with root-relative links, without touching any of the other links. I have the root path already. Replaced links: <tag ... href="path/to_file.ext" ... > ---> <tag ... href="/basepath/path/to_file.ext" ... > Untouched links: <tag ... href="/any/path" ... > <tag ... href="protocol://domain.com/any/path" ... >

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• In PHP how do I complete a regex that returns only what was grouped

  - by maestrojed

  I want to perform a regex using grouping. I am only interested in the grouping, its all I want returned. Is this possible? $haystack = '<a href="/foo.php">Go To Foo</a>'; $needle = '/href="(.*)">/'; preg_match($needle,$haystack,$matches); print_r($matches); //Outputs //Array ( [0] => href="/foo.php"> [1] => /foo.php ) //I want: //Array ( [0] => /foo.php )

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• PHP regex to match sentences that contain a year

  - by zen

  I need a regular expression that will extract sentences from text that contain a year in them. Example text: Next, in 1988 the Bradys were back again for a holiday celebration, "A Very Brady Christmas". Susan Olsen (Cindy) would be missing from this reunion, Jennifer Runyon took her place. This was a two hour movie in which the Bradys got together to celebrate Christmas, introducing the world to the spouses and children of the Brady kids. This movie was the highest rated TV-movie of 1988. If the example text was variable $string, I need it to return: $sentenceWithYear[0] = Next, in 1988 the Bradys were back again for a holiday celebration, "A Very Brady Christmas". $sentenceWithYear[1] = This movie was the highest rated TV-movie of 1988. If it's possible to retain the year via regex, I'd use the year within the sentence and eventually insert the sentences into a database like: INSERT INTO table_name (year, sentence) VALUES ('$year', '$sentenceWithYear[x]')

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• regex to match trailing whitespace, but not lines which are entirely whitespace (indent placeholders

  - by Tim

  I've been trying to construct a ruby regex which matches trailing spaces - but not indentation placeholders - so I can gsub them out. I had this /\b[\t ]+$/ and it was working a treat until I realised it only works when the line ends are [a-zA-Z]. :-( So I evolved it into this /(?!^[\t ]+)[\t ]+$/ and it seems like it's getting better, but it still doesn't work properly. I've spent hours trying to get this to work to no avail. Please help. Here's some text test so it's easy to throw into Rubular, but the indent lines are getting stripped so it'll need a few spaces and/or tabs. Once lines 3 & 4 have spaces back in, it shouldn't match on lines 3-5, 7, 9. some test test some test test some other test (text) some other test (text) likely here{ dfdf } likely here{ dfdf } and this ; and this ; Alternatively, is there an simpler / more elegant way to do this?

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• Help with password complexity regex

  - by Alex

  I'm using the following regex to validate password complexity: /^.*(?=.{6,12})(?=.*[0-9]{2})(?=.*[A-Z]{2})(?=.*[a-z]{2}).*$/ In a nutshell: 2 lowercase, 2 uppercase, 2 numbers, min length is 6 and max length is 12. It works perfectly, except for the maximum length, when I'm using a minimum length as well. For example: /^.*(?=.{6,})(?=.*[0-9]{2})(?=.*[A-Z]{2})(?=.*[a-z]{2}).*$/ This correctly requires a minimum length of 6! And this: /^.*(?=.{,12})(?=.*[0-9]{2})(?=.*[A-Z]{2})(?=.*[a-z]{2}).*$/ Correctly requires a maximum length of 12. However, when I pair them together as in the first example, it just doesn't work!! What gives? Thanks!

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• Problem with Regex in .NET (C#)

  - by Craig Bovis

  I'm trying to write a a regex to validate a string to match the following rules. Must start with a-z (case insensitive) Must only contain a-z A-Z 0-9 . - I've put something together based on my limited knowledge and ran it through an online testing tool for a whole bunch of situations and the results were as I had hoped however when I place the pattern into my .NET code it doesn't match correctly. The pattern I am using is, [a-zA-Z][a-zA-Z0-9.\-]* Is this the correct pattern or am I barking up the wrong tree? Some examples of what I'm expecting. craig.bovis - VALID 24craig - INVALID craig@bovis - INVALID craig24 - VALID -craig24 - INVALID craig24.bovis-test - VALID

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• help with regex pattern

  - by noname

  i have multiple strings containing a link like: <A HREF="http://www.testings2">testings2</A> <A HREF="http://www.blabla">blabla</A> <A HREF="http://www.gowick">gowick</A> i want to use a regex pattern that gets the uri within the href. i could do like: /".*?"/ but then the "" will come along. is there a way to just get the uri within the HREF="" without using preg_replace function? thanks!

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• Javascript Regex to convert dot notation to bracket notation

  - by Tauren

  Consider this javascript: var joe = { name: "Joe Smith", location: { city: "Los Angeles", state: "California" } } var string = "{name} is currently in {location.city}, {location.state}"; var out = string.replace(/{([\w\.]+)}/g, function(wholematch,firstmatch) { return typeof values[firstmatch] !== 'undefined' ? values[firstmatch] : wholematch; }); This will output the following: Joe Smith is currently in {location.city}, {location.state} But I want to output the following: Joe Smith is currently in Los Angeles, California I'm looking for a good way to convert multiple levels of dot notation found between braces in the string into multiple parameters to be used with bracket notation, like this: values[first][second][third][etc] Essentially, for this example, I'm trying to figure out what regex string and function I would need to end up with the equivalent of: out = values[name] + " is currently in " + values["location"]["city"] + values["location"]["state"];

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• How to make regex variables to capture of routes

  - by Zephiro

  anyone can help me with this problem. example $uri = '/username/carlos'; => $routes[] = '/username/@name'; @name convert in variable $name capturing string "carlos" $routes[] = '/list/edit/@id:[0-9]{3}'; $routes[] = '/username/@name'; $routes[] = '/archive/*'; $routes[] = '/'; $uri = '/username/carlos'; foreach ( $routes as $pattern ) { if ( preg_match( '#^' . preg_replace( '#(?:{{)?@(\w+\b)(?:}})?#i', '(?P<\1>[\w\-\.!~\*\'"(),\s]+)', str_replace( '\*', '(.*)', preg_quote( $pattern, '/' ) ) ) . '\/?$#i', $uri, $matchs ) ) { //how to make regex for this to work : echo $name; // carlos =>$uri = '/username/carlos'; or matt => $uri = '/username/matt'; } } thanks for reading

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• RegEx: Split String at Capitalized Letters and Non-capitalized letters to Create Small Cap Fonts

  - by Otaku

  So i've purposefully stayed away from RegEx as just looking at it kills me...ugh. But now I need it and could really use some help to do this in .NET (C# or VB.NET). I need to split a string based on capitalization or lack thereof. For example: I'm not upPercase "I" "'m not up" "P" "ercase" or FBI Agent Winters "FBI A" "gent " "W" "inters" The reason I'm doing this is to manually create small caps, in which non-capitalized strings will be sent to uppercase and their font size made 80% of the original font size. Appreciate any help that could be provided here.

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• How to improve my Python regex syntax?

  - by FarmBoy

  I very new to Python, and fairly new to regex. (I have no Perl experience.) I am able to use regular expressions in a way that works, but I'm not sure that my code is particularly Pythonic or consise. For example, If I wanted to read in a text file and print out text that appears directly between the words 'foo' and 'bar' in each line (presuming this occurred one or zero times a line) I would write the following: fileList = open(inFile, 'r') pattern = re.compile(r'(foo)(.*)(bar)') for line in fileList: result = pattern.search(line) if (result != None): print result.groups()[1] Is there a better way? The if is necessary to avoid calling groups() on None. But I suspect there is a more concise way to obtain the matching String when there is one, without throwing errors when there isn't. I'm not hoping for Perl-like unreadability. I just want to accomplish this common task in the commonest and simplest way.

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• RegEx to extract all HTML tag attributes including inline JavaScript

  - by Mike

  I found this useful regex code here while looking to parse HTML tag attributes: (\S+)=["']?((?:.(?!["']?\s+(?:\S+)=|[>"']))+.)["']? It works great, but it's missing one key element that I need. Some attributes are event triggers that have inline Javascript code in them like this: onclick="doSomething(this, 'foo', 'bar');return false;" Or: onclick='doSomething(this, "foo", "bar");return false;' I can't figure out how to get the original expression to not count the quotes from the JS (single or double) while it's nested inside the set of quotes that contain the attribute's value.

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• Add / remove a port number to/from a URL with REGEX in PHP

  - by SuperDuck

  Hello guys, I've searched but was unable to find an existing regex function. Has anybody done this before? I wish to add a port number, or remove a potantially existing one from a url in php. To use in some functions which translate a given url to the secure one, unsecure one, etc. Now I need a second SSL secured site on the server so I need to dynamically add a port number while converting http to https, and remove any port number while converting from https to http. Thanks, Duck

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• Regex to match 2 things in 1 HTML file

  - by CyberK

  Hi, I have a HTML file which contains the following: <img src="MATCH1" bla="blabla"> <something:else bla="blabla" bla="bla"><something:else2 something="something"> <something image="MATCH2" bla="abc"> Now I need a regex to match both MATCH1 and MATCH2 Also the HTML contains multiple parts like this, so it can be in the HTML 1, 2, 3 of x times.. When I say: <img\s*src="(.*?)".*?<something\s*image="(.*?)" It doesn't match it. What am I missing here? Thanks in advance!

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• RegEx for a date format

  - by Ivan

  Say I have a string like this: 07-MAY-07 Hello World 07-MAY-07 Hello Again So the pattern is, DD-MMM-YY, where MMM is the three letter format for a month. What Regular Expression will break up this string into: 07-MAY-07 Hello World 07-MAY-07 Hello Again Using Jason's code below modified for C#, string input = @"07-MAY-07 Hello World 07-MAY-07 Hello Again"; string pattern = @"(\d{2}-[A-Z]{3}-\d{2}\s)(\D*|\s)"; string[] results = Regex.Split(input, pattern); results.Dump(); Console.WriteLine("Length = {0}", results.Count()); foreach (string split in results) { Console.WriteLine("'{0}'", split); Console.WriteLine(); } I get embedded blank lines? Length = 7 '' '07-MAY-07 ' 'Hello World ' '' '07-MAY-07 ' 'Hello Again' '' I don't even understand why I am getting the blank lines...?

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• replacing strings with regex in javascript

  - by koko

  Hi, regex is bugging me right now. I simply want to replace the range=100 in a string like var string = '...commonstringblabla&range=100&stringandsoon...'; with ...commonstringblabla&range=400&stringandsoon... I successfully matched the "range=100"-part with alert( string.match(/range=100/) ); But when I try to replace it string.replace(/range=100/, 'range=400'); nothing happens, the string still has the range=100 in it... I don't get it, please help.

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• Regex & BBCode - Perfecting Nested Quote

  - by Moe

  Hey there, I'm working on some BBcode for my website. I've managed to get most of the codes working perfectly, however the [QUOTE] tag is giving me some grief. When I get something like this: [QUOTE=1] [QUOTE=2] This is a quote from someone else [/QUOTE] This is someone else quoting someone else [/QUOTE] It will return: > 1 said: [QUOTE=2]This is a quote from > someone else This is someone else quoting someone else[/QUOTE] So what is happening is the [/quote] from the nested quote is closing the quote block. The Regex I am using is: "[quote=(.*?)\](.*?)\[/quote\]'is" How can I make it so nested Quotes will appear properly? Thank you.

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• RegEx - Match optional groups

  - by Maurizio

  I know RE is not the best way to scrape HTMLs, but this is it... I have some something like: <td> Writing: <a href="creator.php?c=CCh">Carlo Chendi</a> Art: <a href="creator.php?c=LBo">Luciano Bottaro</a> </td> And I need to match the Writing and Art parts. But it is not said they're there and there could be other parts like Ink and Pencils... How do i do this ? I need to use pure Regex, no additional Python libs... Thanks !

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• Using a regex to determine domain using JavaScript

  - by jerome

  Hi All, If, as here at work, we have test, staging and production environments, such as: http://test.my-happy-work.com http://staging.my-happy-work.com http://www.my-happy-work.com I am writing some javascript that will redirect the browser to a url such as: http://[environment].my-happy-work.com/my-happy-video I need to be able to determine the current environment that we are in. There is the possibility that I will currently be at a url such as: http://[environment].my-happy-work.com/my-happy-path/my-happy-resource I want to be able to grab the window.location but strip it of everything but: http://[environment].my-happy-work.com And then append to that string + "/" + "my-happy-video". I am not skilled with regex, but I suppose there would be a way to parse the window.location up to the ".com" Thoughts? Thanks!

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• Regex to detect a proper permalink?

  - by Fedor

  These permalinks above are rerouted to my page: page.php?permalink=events/foo page.php?permalink=events/foo/ page.php?permalink=ru/events/foo page.php?permalink=ru/events/foo/ The events is dynamic, it could be specials or packages. My dilemma is basically; I need to detect an empty link in order so I can feed a robots no index meta tag in the case of: page.php?permalink=events page.php?permalink=events/ page.php?permalink=ru/events/ page.php?permalink=ru/events I can't use a simple pattern such as [a-zA-Z]+\/?(.+)/ since it won't work on the i18n permalinks. What regex could I use which would detect this, using $_GET['permalink'] as the reference to the permalinks? And avoid false positives? Update: Empty link means there's no fragment after the "events/" part. These are empty: page.php?permalink=events page.php?permalink=events/ page.php?permalink=ru/events/ page.php?permalink=ru/events

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• Regex - Ignore lines with matching text

  - by codem

  I need the RegEx command to get all the lines which DO NOT have the job name containing "filewatch". Any help will be greatly appreciated! Thanks. STATUS: FAILURE JOB: i3-imds-dcp-pd-bo1-05-ftpfilewatcher STATUS: FAILURE JOB: i3-cur-atmrec-pd-TD_FTP_Forecast_File_Del_M_Su ALARM: JOBFAILURE JOB: i3-cur-atmrec-pd-TD_FTP_Forecast_File_Del_M_Su STATUS: FAILURE JOB: i3-sss-system-heartbeat ALARM: JOBFAILURE JOB: i3-sss-system-heartbeat STATUS: FAILURE JOB: i3-chq-cspo-pd-batch-daily-renametable-fileok STATUS: FAILURE JOB: i3-chq-cspo-pd-batch-daily-renametable-file ALARM: JOBFAILURE JOB: i3-chq-cspo-pd-batch-daily-renametable-fileok ALARM: JOBFAILURE JOB: i3-chq-cspo-pd-batch-daily-renametable-file STATUS: FAILURE JOB: i3-imds-dcp-pd-bo1-35-filewatcher STATUS: FAILURE JOB: i3-imds-dcp-pd-bo1-05-ftpfilewatcher STATUS: FAILURE JOB: i3-imds-dcp-pd-bo1-35-filewatcher STATUS: FAILURE JOB: i3-imds-dcp-pd-bo1-05-ftpfilewatcher

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• regex for shortforms

  - by Sourabh

  I need a regex (JavaScript) which will extract shortforms from a string for example from below string Hibbs' essays in progress include "Anselm's Sacramental Imagination," "W.E.B. DuBois and Socratic Questioning," and "Everything That Rises Must Converge: Aquinas's Theological Re-formation of the Cardinal Virtues." it will match "W.E.B." so the condition is it should have DOTs to seperate the letters or from Marcih J. Robert II. Distinguished Professor of Electrical & Computer Engineering. Ph.D. (1977) Texas Tech University, B.S./M.S. Rose-Hulman Institute of Technology (1972/1973). Ph.D. B.S. M.S. will match Thanks

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• A regex for version number parsing

  - by ajborley

  Hi, I have a version number of the following form: version.release.modification where version, release and modification are either a set of digits or the '*' wildcard character. Additionally, any of these numbers (and any preceding .) may be missing. So the following are valid and parse as: 1.23.456 = version 1, release 23, modification 456 1.23 = version 1, release 23, any modification 1.23.* = version 1, release 23, any modification 1.* = version 1, any release, any modification 1 = version 1, any release, any modification * = any version, any release, any modification But these are not valid: *.12 *123.1 12* 12.*.34 Can anyone provide me a not-too-complex regex to validate and retrieve the release, version and modification numbers? Many thanks! Thanks for all the responses! This is ace :) Based on OneByOne's answer (which looked the simplest to me), I added some non-capturing groups (the '(?:' parts - thanks to VonC for introducing me to non-capturing groups!), so the groups that do capture only contain the digits or * character. ^(?:(\d+)\.)?(?:(\d+)\.)?(\*|\d+)$ Many thanks to everyone!

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• java.util.regex.* Recursive matching

  - by amit.bhayani

  Hi Guys, I have been using the java.util.regex.* classes for Regular Expression in Java and all good so far. But today I have a different requirement. For example consider the pattern to be "aabb". Now if the input String is aa it will definitely not match, however there is still possibility that if I append bb it becomes aabb and it matches. However if I would have started with cc, no matter what I append it will never match. I have explored the Pattern and Matcher class but didn't find any way of achieving this. The input will come from user and system have to wait till pattern matches or it will never match irrespective of any input further. Any clue? Thanks.

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• [C#, Regex] EOL Special Char not matching

  - by Aurélien Ribon

  Hello, I am trying to find every "a - b, c, d" pattern in an input string. The pattern I am using is the following : "^[ \t]*(\\w+)[ \t]*->[ \t]*(\\w+)(,[ \t]*\\w+)*$" The input is : a -> b b -> c c -> d The function is : private void ParseAndBuildGraph(String input) { MatchCollection mc = Regex.Matches(input, "^[ \t]*(\\w+)[ \t]*->[ \t]*(\\w+)(,[ \t]*\\w+)*$", RegexOptions.Multiline); foreach (Match m in mc) { Debug.WriteLine(m.Value); } } The output is : c -> d Actually, there is a problem with the line ending "$" special char. If I insert a "\r" before "$", it works, but I thought "$" would match any line termination (with the Multiline option), especially a \r\n in a Windows environment. Is it not the case ?

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