[mp_validHexColor] at tagSwap.net: Open Source Lasso Code

[mp_validHexColor]

Description

Link: [mp_validHexColor]

Author: Marc Pinnell

Category: String

Version: 8.5.x

License: Public Domain

Posted: Mar. 02, 2010

Updated: Mar. 02, 2010

More by this author...

Validates input string determining if it is a valid hex color (returns TRUE/FALSE). If first character is "#" then it is stripped.

Parameters

-colorstring

string, required

string to test for validity

Sample Usage

mp_validHexColor('aabbcc')

=> TRUE

mp_validHexColor('#123abce')

=> FALSE

mp_validHexColor('#aFaE3f')

=> TRUE

Source Code

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define_tag(
	'validHexColor',
	-namespace='mp_',
	-priority='replace',
	-required='colorstring',
	-description='Validates input string determining if it is a valid hex color (returns TRUE/FALSE). If first character is "#" then it is stripped.'
	);

	//Setup output local var
	local('out' = boolean);
	
	//If leading character is a "#", remove it
	#colorstring->removeleading('#');
	
	//thanks to Johan for the below Regex!
	//Test string for length (only 3 or 6 characters are valid) and then each digit so that each one is in the valid range (0-9 or a-f)
	#out = string_findregexp(#colorstring, -find='^[0-9a-f]{3}$', -ignorecase) -> size > 0 || string_findregexp(#colorstring, -find='^[0-9a-f]{6}$', -ignorecase) -> size > 0;

	return(#out);
	
/define_tag;

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