Regular expression for validating url in c


04-Sep-2015 21:15

Also, not all characters are there - where are the period, equals, bang (exclamation sign), dash, colon, alphas that are a part of character entry escapes or classes, 0, hash/pound sign, and angle brackets ()?These special characters all have meta meanings within regular expressions...LV: Apparently no one has come along and updated the above expression to cover these.Example posted by KC: A set containing both angle brackets: metacharacter)?Since it's not anchored to the start and end of the string (with ^ and $) it will match any string that contains four groups of 1-3 digits separated by periods, such as: "66.70.7.154.9".Regular Expression Examples is a list, roughly sorted by complexity, of regular expression examples.It also serves as both a library of useful expressions to include in your own code. PYK 2015-10-29: As a matter of fact, every string is a legal Tcl variable name."How do I split an arbitrary string into words? If you use or some other list operation, then you must be sure that the string is a well-formed list.For advanced examples, see Advanced Regular Expression Examples You can also find some regular expressions on Regular Expressions and Bag of algorithms pages. (Braces could cause problems.) So use a regular expression like this very simple shorthand for non-space characters: More information ( to Brent Welch for these examples, showing the difference between a traditional character matching and "the Unicode way."Only letters: The second regular expression is interpreted in a similar fashion.

Janos Holanyi: I would really need to build up a re that would match one line and only one line - that is, excluding carriage-return-newline's (\r\n) from matching... This allows plain carriage return or plain newline.Thanks to bbh and Donal Fellows for this regular expression.



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