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• Regex Query to get string value

  - by Alex

  Hi all, I am looking for a regex query that would allow me to retrieve a value from a string here are examples of my string: home.aspx?StudyID=0020101&aa=72 randompage.aspx?studyid=3023603&aa=40 myconfig.aspx?studyid=0021600&aa=40 I need to get the numerical value of the 'studyid' variable, please note that the name of the page will change so simply doing the substring and counting char spaces didn't work I unfortunately cannot use request.querystring method as this string is stored in the database and a select statement will be used for running this regex query Thanks

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• C# equivalent of Java Punctuation regex

  - by user325099

  I'm looking to find the equivalent in C# for the equivalent of this regex. Java: public static final String expression = "[\s\p{Punct}]"; {Punct} is a reserved character class in Java but I'm not sure how to create the equivalent expression so that the .net regex engine doesn't barf.

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• Refactor Regex Pattern - Java

  - by UK

  Hello All, I have the following aaaa_bb_cc string to match and written a regex pattern like \\w{4}+\\_\\w{2}\\_\\w{2} and it works. Is there any simple regex which can do this same ?

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• Regex - How can I achieve this ?

  - by Rachel

  I have regex as /^[a-zA-Z ]+$/ now I need to add support for unicode characters and so am using \p{L} like '/^[a-zA-Z ]+$\p{L}/'. This is not working for me and I am not sure that this is correct way of using it. I am new to regex and would appreciate any guidance. Thanks.

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• Regex remove everything thats outside { }

  - by wemakeweb

  Regex to remove everything outside the { } for example: before: |loader|1|2|3|4|5|6|7|8|9|{"data" : "some data" } after: {"data" : "some data" } with @Marcelo's regex this works but not if there are others {} inside the {} like here: "|loader|1|2|3|4|5|6|7|8|9| {'data': [ {'data':'some data'} ], }"

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• Regex with all optional parts but at least one required

  - by Alan Mendelevich

  I need to write a regex that matches strings like "abc", "ab", "ac", "bc", "a", "b", "c". Order is important and it shouldn't match multiple appearances of the same part. a?b?c? almost does the trick. Except it matches empty strings too. Is there any way to prevent it from matching empty strings or maybe a different way to write a regex for the task.

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• Looking for: C/C++ Regex library that supports Named Captures

  - by user318811

  I'm thinking about writing a small application that will help me mass rename files. I currently use an application named 'RegexRenamer', which (I'm assuming) uses the .NET regex engine. The application is fine, but is sort of clunky. So what I'm looking for is a C/C++ regex library that I can build my custom program off of. Anything that is small and lightweight is preferred (.Net seems heavy). Thanks.

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• Find consecutive "//" in regex in JavaScript

  - by iOnline247

  I gave it a college try, but I'm stumped. I'm trying to find consecutive slashes within a string. The rest of the regex works great, but the last part I can't quite get. Here's what I have: val.match( /^[\/]|[~"#%&*:<>?\\{|}]|[\/|.]$/ ) and finding this thread, I decided to update my code to no avail: RegEx to find two or more consecutive chars val.match( /^[\/]|[\/]{2,}|[~"#%&*:<>?\\{|}]|[\/|.]$/ ) What do I need to get this thing going?

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• mod rewrite regex

  - by bbutle01

  The plan is to take domain.com/chat2/roomnumber and redirect to domain.com/chat2/index.php?room_id=roomnumber. Here's my code that's NOT workin: RewriteEngine on RewriteRule ^/chat2/([a-z0-9_-]+)/$ /index.php?room_id=$1 [NC,L] RewriteRule ^/chat2/([a-z0-9_-]+)$ /index.php?room_id=$1 [NC,L] I get sent to the 404 page. I'm guessing the problem is my placement of the ^ but I'm not certain.

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• nginx rewrite regex for API versioning

  - by MSpreij

  What I want is for the first to be turned into the second.. /widget => /widget/index.php /widget/ => /widget/index.php /widget?act=list => /widget/index.php?act=list /widget/?act=list => /widget/index.php?act=list /widget/list => /widget/index.php?act=list /widget/v2?act=list => /widget/v2.php?act=list /widget/v2/?act=list => /widget/v2.php?act=list /widget/v2/list => /widget/v2.php?act=list v2 could also be v45, basically "v\d+" act, "list" in this case, can have many values and more will be added. Any additional query parameters would just be passed on with $args, I guess. Basically URLs not specifying the version will go to index.php, which can then decide what specific version file to include. What I am afraid of happening is loops - this should sit in location /widget { right?. (As for putting the version of the API in the URL, I'm not trying to be RESTful, and target audience is small) Resources on how to do this entirely in index.php using "routers" also welcome :-/

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• SetEnvIf regex for setting Content-Disposition HTTP header

  - by Erik Sorensen

  I am attempting to use the IHS 7.0/apache 2.2 SetEnvIf directive to set the filename of a downloaded file based on a url parameter. I think I am pretty close, however if there is a space (encoded or otherwise) in the filename - it fails. example url: http://site.com/path/to/filename.ext/file-title=Nice File Name.ext?file-type=foo apache config: SetEnvIf Request_URI "^.*file-title\=(.*)\??.*$" FILENAME=$1 Header unset "Content-Disposition" Header add "Content-Disposition" "attachment; filename=%{FILENAME}e" UnsetEnv FILENAME An application will specify what is now showing up as "Nice File Title.ext" in the example. This all works great if there are no spaces, however - if there is a space the filename to download will just show up as "Nice". There may or may not be a second set of parameters in the query string (?file-type, etc)

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• Apache MatchRedirect exception regex

  - by Arash Mousavi

  I want to redirect any URL that is Https and hasn't start with "system_" to the same URL with http. for exapmle for this url : https://exsite.tld/some/thing/that/not/start/with/pattern to : http://exsite.tld/some/thing/that/not/start/with/pattern but this url: https://exsite.tld/system_aas3f4 Shouldn't redirect. I try: RedirectMatch ^/?((?!(system_)).*) http://exsite.tld/$1 but it won't work. I don't know what's the problem.

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• "sed" regex help: Replacing characters

  - by powerbar

  I want to change characters in a XML file by using sed. The input looks like this: <!-- Input --> <root> <tree foo="abcd" bar="abccdcd" /> <dontTouch foo="asd" bar="abc" /> </root> Now I want to change all c to X in the bar tag of the tree element. <!-- Output --> <root> <tree foo="abcd" bar="abXXdXd" /> <dontTouch foo="asd" bar="abc" /> </root> How is the correct sed command? Please consider, there can be more than one occurence of c (next to each other or not) in one tag... I tried this myself, but it won't change multiple c, and it does append a X :( sed -i 's/\(<tree.*bar=\".*\)c\(.*\"\/>\)/\1X\2/g' Input.xml

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• Need help on awk/sed/ perl pattern with regex / grep

  - by Jayakumar K

  Sample file output from grep file1:my $dbh = DBI->connect("dbi:mysql:$database_name", $DB_USER, $DB_PASSWD) file2:($dbc,$rc) = mysql_connect($mysql_host,$mysql_user,$mysql_password); The awk pattern should get values databasename, DB_USER And DB_PASSWD from line 1 and mysql_host,mysql_user and mysql_password from line 2 i.e all variables inside the function. Then it should search for the declaration of that variable in file before : (semicolon) ex: databasename in file1 may be $databasename = "dbweb" ; ex: mysql_user in file2 may be $mysql_user="root" ; Result: It should display variable declarations of all 6 variables along with filenames file2:$mysql_host = "db1"; file2:$mysql_user = "root"; file1:$DB_USER = 'user';

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• Nagios not accepting regex in command

  - by Creshal

  I have this command defined: define command{ command_name check_http_sane command_line $USER1$/check_http -H $HOSTNAME$ -r "HTTP/1.1 (200|301|302|303|304|307|401|418|426)" } When I run it manually on command line, it works fine, but nagios (2.6) reports a "pattern not found" error. Do I need to escape something? Edit: As stated below, I solved it by replacing check_http with my own script which works (good enough for our use case, anyway). Script: http://pastebin.com/hNmz6Wa1

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• Nginx RegEx to match a directory and file

  - by HTF

  I'm wondering if it's possible to match Wordpress directory and specific file in the same location, so at the moment I've got rule to match only the wp-admin directory: ## Restricted Access directory location ^~ /wp-admin/ { auth_basic "Access Denied!"; auth_basic_user_file .users; location ~ \.php$ { fastcgi_pass unix:/var/run/php-fpm/www.sock; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } } I would like to also match the wp-login.php file but I can't get to work, I've tried the following: location ^~ /(wp-admin/|wp-login.php) { ...

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• nginx regex configuration for 404 images

  - by Muhammet Arslan

  I have dynamic link series like below; http://example.com/users/1871233/18712443_cover.jpg Only static thing is on that link is example.com/users and _cover.I want to make that ; when requested is not found return a jpg location ~ ^\/users\/(.*)\/(.*)_cover.*(jpg|jpeg|png|gif)$ { error_page 404 /deff_images/empty-cover-jpg.jpg; } I did smt like above but not worked . What can i do for that ? So thanks

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• codingBat repeatEnd using regex

  - by polygenelubricants

  I'm trying to understand regex as much as I can, so I came up with this regex-based solution to codingbat.com repeatEnd: Given a string and an int N, return a string made of N repetitions of the last N characters of the string. You may assume that N is between 0 and the length of the string, inclusive. public String repeatEnd(String str, int N) { return str.replaceAll( ".(?!.{N})(?=.*(?<=(.{N})))|." .replace("N", Integer.toString(N)), "$1" ); } Explanation on its parts: .(?!.{N}): asserts that the matched character is one of the last N characters, by making sure that there aren't N characters following it. (?=.*(?<=(.{N}))): in which case, use lookforward to first go all the way to the end of the string, then a nested lookbehind to capture the last N characters into \1. Note that this assertion will always be true. |.: if the first assertion failed (i.e. there are at least N characters ahead) then match the character anyway; \1 would be empty. In either case, a character is always matched; replace it with \1. My questions are: Is this technique of nested assertions valid? (i.e. looking behind during a lookahead?) Is there a simpler regex-based solution?

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• Problem with boost::find_format_all, boost::regex_finder and custom regex formatter (bug boost 1.42)

  - by Nikko

  I have a code that has been working for almost 4 years (since boost 1.33) and today I went from boost 1.36 to boost 1.42 and now I have a problem. I'm calling a custom formatter on a string to format parts of the string that match a REGEX. For instance, a string like: "abc;def:" will be changed to "abc\2Cdef\3B" if the REGEX contains "([;:])" boost::find_format_all( mystring, boost::regex_finder( REGEX ), custom_formatter() ); The custom formatter looks like this: struct custom_formatter() { template< typename T > std::string operator()( const T & s ) const { std::string matchStr = s.match_results().str(1); // perform substitutions return matchStr; } } This worked fine but with boost 1.42 I know have "non initialized" s.match_results() which yield to boost::exception_detail::clone_implINS0_::error_info_injectorISt11logic_errorEEEE - Attempt to access an uninitialzed boost::match_results< class. This means that sometimes I am in the functor to format a string but there is no match. Am I doing something wrong? Or is it normal to enter the functor when there is no match and I should check against something? for now my solution is to try{}catch(){} the exception and everything works fine, but somehow that doesn't feel very good. EDIT1 Actually I have a new empty match at the end of each string to parse. EDIT2 : one solution inspired by ablaeul template< typename T > std::string operator()( const T & s ) const { if( s.begin() == s.end() ) return std::string(); std::string matchStr = s.match_results().str(1); // perform substitutions return matchStr; } *EDIT3 Seems to be a bug in (at least) boost 1.42 *

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• Regex to check if exact string exists including #

  - by Jayrox

  New question As suggested by Asaph in previous question: Regex to check if exact string exists I am looking for a way to check if an exact string match exists in another string using Regex or any better method suggested. I understand that you tell regex to match a space or any other non-word character at the beginning or end of a string. However, I don't know exactly how to set it up. Search String: #t String 1: Hello World, Nice to see you! #t String 2: Hello World, Nice to see you! String 3: #T Hello World, Nice to see you! I would like to use the search string and compare it to String 1, String 2 and String 3 and only get a positive match from String 1 and String 3 but not from String 2. Requirements: Search String may be at any character position in the Subject. There may or may not be a white-space character before or after it. I do not want it to match if it is part of another string; such as part of a word. For the sake of this question: I think I would do this using this pattern: /\b\#t\b/gi However, this is not returning the results as I would have expected. I am able to find the exact matches for normal strings (strings where # isn't present) using: /\b{$search_string}\b/gi Additional info: this will be used in PHP 5

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• Replacing specific HTML tags using Regex

  - by matthewpe

  Alright, an easy one for you guys. We are using ActiveReport's RichTextBox to display some random bits of HTML code. The HTML tags supported by ActiveReport can be found here : http://www.datadynamics.com/Help/ARNET3/ar3conSupportedHtmlTagsInRichText.html An example of what I want to do is replace any match of <div style="text-align:*</div> by <p style=\"text-align:*</p> in order to use a supported tag for text-alignment. I have found the following regex expression to find the correct match in my html input: <div style=\"text-align:(.*?)</div> However, I can't find a way to keep the previous text contained in the tags after my replacement. Any clue? Is it me or Regex are generally a PITA? :) private static readonly IDictionary<string, string> _replaceMap = new Dictionary<string, string> { {"<div style=\"text-align:(.*?)</div>", "<p style=\"text-align:(.*?)</p>"} }; public static string FormatHtml(string html) { foreach(var pair in _replaceMap) { html = Regex.Replace(html, pair.Key, pair.Value); } return html; } Thanks!

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• Problem with RegEx.Replace and trying to change a filename

  - by fraXis

  Hello, I am having a strange problem and I can't seem to figure it out. My filename is something like this: DER 1513016-3.020F.NCF. I want to be able to change it to: DER 1513016-3.020H.NCF Sometimes the filename can be this as well: DER 1513016-3.020F_NEW.NCF which would change to: DER 1513016-3.020H_NEW.NCF This is my code to do this: OpenFileDialog fDialog = new OpenFileDialog(); fDialog.Title = "Open"; fDialog.Filter = "NCF files (*.ncf)|*.ncf|All files (*.*)|*.*"; fDialog.InitialDirectory = @"C:\Program Files\"; if (fDialog.ShowDialog() == DialogResult.OK) { string newfilename; string fileext = Path.GetExtension(fDialog.FileName); newfilename = Regex.Replace(fDialog.FileName, "F.NCF", "H.NCF"); newfilename = Regex.Replace(fDialog.FileName, "F_NEW.NCF", "H_NEW.NCF"); } This is where things get wierd. The way the code works now, it will NOT change the filename to DER 1513016-3.020H.NCF If I comment out this line of code: //newfilename = Regex.Replace(fDialog.FileName, "F_NEW.NCF", "H_NEW.NCF"); it will work fine and the file will now become: DER 1513016-3.020H.NCF However, if I uncomment that line of code, the filename will not change to DER 1513016-3.020H.NCF. It will stay as DER 1513016-3.020F.NCF. Why is that line of code causing the routine to not change the filename? Thanks,

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• Limiting regex match

  - by DMIL

  Say I have this HTML fragment <td width="25%" style="text-align:right;" > <span style="font-family: Arial; font-size: 12px;"> <strong>Regular price:</strong></span> </td> <td width="25%" style="text-align:center;" > <span style="font-family: Arial; font-size: 12px;> <strong>11,100.00 USD</strong></span> </td> <td width="25%" style="text-align:right;" > <span style="font-family: Arial; font-size: 12px;"> <strong>Web price:</strong></span> </td> <td width="25%" style="text-align:center;" > <span style="font-family: Arial; font-size: 12px;> <strong>9,100.00 USD</strong></span> </td> How would I get the first amount (11,100.00) using regex? I tried /Regular price.+(\d[^\s]+)\sUSD/is but it's not working, it's returning '00'. Obviously I'm a newbie at regex and I'm hoping to get by without picking up a book. And I HAVE to use regex to parse this HTML because that particular site was designed by someone who doesn't know about classes or IDs.

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• PHP Regex to remove nested form elements but not input elements

  - by that0n3guy

  I'm modifying a PHP script that I have and it is currently outputting a nested form. Something like: <form name="input" action="html_form_action.asp" method="get"> <p>stuff here here, this may or may not be in a div, script, etc..</p> <form name="input" action="html_form_action.asp" method="get"> <div>stuff here possibilly</div> Username: <input type="text" name="user" /> <input type="submit" value="Submit" /> </form> <p>otherstuff this may or may not be in a div, script, etc..</p> </form> Nested form's are a no-no (IE hates them and basically causes the form to stop working), so I need to remove the nested form lines, but not the form items. I need to remove the nested: <form name="input" action="html_form_action.asp" method="get"> and </form> but not the outer <form and </form> or the input or submit stuff. Is this possible to do with regex? Note, the reason I just want to regex out the form rather than find the problem is because I know it will take some significant re-working to get rid of the double form... the regex solution is quick for now.

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• .NET regex's not working - 1# check beginning of text entered #2 check structure

  - by Olly

  OK it has unfortunately been a while since I've used REGEX and I am struggling to wonder why its not working with my project. I have used Regex Tester which says my two tests are valid but when it comes to testing in my project they get rejected. 1) Check the text starts with certain characters [RegularExpression("(spAPP)",ErrorMessage = "Stored procedures must begin with spAPP")] This seems to accept spAPP on it's own, but not something like spAPPabcdef which I want it to. I am struggling to find the "Ignore rest of the text" attribute with REGEX. 2) A bit more complicated. I have certain naming conventions for AD groups, so an example would be "UK ROLE IT APPLICATION DEV ADMIN", up to the role name there are standards (so I need the "UK ROLE IT APPLICATION DEV" checked. [RegularExpression(@"((UK|FRANCE|GERMANY|USA)\s(ROLE)\s(IT|NON-IT)\s(APPLICATION)\s(DEV|TEST|LIVE))", ErrorMessage = "Please use AD naming standards.")] I think it might be the fact I am using () around all the words, but its easier to read in my code. The RegexTester I found seems to indicate that it's right, but again, in my .NET project, it rejects it. Thanks,

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