I had to find strings containing ” of object”, but not starting with a “)”, so the regex became this:
[^)] of object
Source: [WayBack] Regex – Does not contain certain Characters – Stack Overflow
–jeroen
Archive for the ‘RegEx’ Category
Regex – Does not contain certain Characters – Stack Overflow
Posted by jpluimers on 2018/06/01
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Debuggex: Online visual regex tester. JavaScript, Python, and PCRE.
Posted by jpluimers on 2018/01/18
On my list of things to try out when I need to use regular expressions again:
Test your regex by visualizing it with a live editor. JavaScript, Python, and PCRE.
Source: Debuggex: Online visual regex tester. JavaScript, Python, and PCRE.
Via: [WayBack] Sergiu Toarca answering [WayBack] Regex lookahead with multiple negative conditions – Stack Overflow
Note: in January 2018, Debuggex was down for a few days (Thanks Uwe for bringing that up and giving the below alternative [WayBack]).
If you are on Windows and are OK with a small cost, try this instead: [WayBack] RegexBuddy: Learn, Create, Understand, Test, Use and Save Regular Expression
–jeroen
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Convert space indented text to markdown minus indented
Posted by jpluimers on 2018/01/17
Since I will never be good at regex, this are a few search/replace patterns I used in Atom.io to convert a plain text document space indented like this:
Version 1.23.4.15
First level indented text
Is also a first level indented text
Too a first level indented text
- First level indented text too
Second level indented text
Is also a second level indented text
Too a second level indented text
- Second level indented text too
- A third level indented text
Third level indented text
Is also a third level indented text
Too a third level indented text
98.4.32.1
to a Markdown indented one like this:
Version 1.23.4.15 - First level indented text - Is also a first level indented text - Too a first level indented text - First level indented text too - Second level indented text - Is also a second level indented text - Too a second level indented text - Second level indented text too - A third level indented text - Third level indented text - Is also a third level indented text - Too a third level indented text Version 98.4.32.1
Prepend Version when needed: https://regex101.com/r/CUhUbr/1
- Search:
^(\d+\.\d+\.\d+\.\d+)
- Replace:
Version $1
Add markdown first level indentations to lines that don’t have a markdown first level indentation yet, nor start with Version nor start with a space: https://regex101.com/r/CUhUbr/2
- Search:
^(?!(Version )|(- )|( )|(\d+\.\d+\.\d+\.\d+))(.*)
- Replace:
- $5
Add markdown second level indentations to lines that don’t have a markdown second level indentation yet but do have a regular second level indentation: https://regex101.com/r/CUhUbr/3
- Search:
^ (?!(- )|( ))(.*)
- Replace:
- $3
Add markdown third level indentations to lines that don’t have a markdown third level indentation yet but do have a regular third level indentation: https://regex101.com/r/CUhUbr/4
- Search:
^ (?!(- )|( ))(.*)
- Replace:
- $3
https://regex101.com/r/CUhUbr/1
https://regex101.com/r/CUhUbr/2
https://regex101.com/r/CUhUbr/3
https://regex101.com/r/CUhUbr/4
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regex – Regular expression to match DNS hostname or IP Address? – Stack Overflow
Posted by jpluimers on 2017/08/29
I’m not fond of them, but sometimes they can do their job regex – Regular expression to match DNS hostname or IP Address? – Stack Overflow
Two notes:
- The first answer matches either IPv4 or hostname
(no IPv6 support yet; reminder to self: find it one day). - The second answer restricts the hostname parts to be no more than 63 characters each. It doesn’t fix the total length being 255 or less
(reminder to self: create that restriction one day).
First answer:
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JavaScript. Sigh. No real RegExp support. Sigh. Google Search results. Sigh.
Posted by jpluimers on 2017/03/01
Prologue
Every time I need to use JavaScript there’s this tiny voice in the back of my head “Please don’t”, for instance because of
JavaScript has two sets of equality operators:
===and!==, and their evil twins==and!=.
Verify a URI in JavaScript with a Regular Expression using Google Search examples
This time it did it again: I used JavaScript. My need was to verify a basic URI in JavaScript, so I wrote this function based on RFC 3986 [WayBack] which in Appendix B has a nice regular expression: ^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?
function isValidUri(uri){
var uriRegExPattern = "^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?";
var uriRegEx = new RegExp(uriRegExPattern);
return (uriRegEx.test(uri));
}
It would crash. But JavaScript is JavaScript, so even a site like JSFiddle wouldn’t show an error (later I found out that enabling the console on http://jsbin.com/wamavacuco/edit?html,console,output does show the error in the console complete with stack trace).
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