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Top Forums UNIX for Dummies Questions & Answers Regular expression on hex color codes Post 302361247 by figaro on Monday 12th of October 2009 06:26:47 PM
Old 10-12-2009
Regular expression on hex color codes

I want to have all hex color codes in a given stylesheet in uppercase, so #fff should be converted to #FFF for instance. Here is the regular expression I use to match and convert hex color codes to uppercase:
Code:
sed -e 's/^#([0-9a-f]{3}$)|([0-9a-f]{6}$)/^#([0-9A-F]{3}$)|([0-9A-F]{6}$)/' main.css

However, no conversion to uppercase takes place. How can I achieve this?
 
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base32::hex(n)							  Base32 encoding						    base32::hex(n)

__________________________________________________________________________________________________________________________________________________

NAME
base32::hex - base32 extended hex encoding SYNOPSIS
package require Tcl 8.4 package require base32::core ?0.1? package require base32::hex ?0.1? ::base32::hex::encode string ::base32::hex::decode estring _________________________________________________________________ DESCRIPTION
This package provides commands for encoding and decoding of strings into and out of the extended hex base32 encoding as specified in the RFC 3548bis draft. API
::base32::hex::encode string This command encodes the given string in extended hex base32 and returns the encoded string as its result. The result may be padded with the character = to signal a partial encoding at the end of the input string. ::base32::hex::decode estring This commands takes the estring and decodes it under the assumption that it is a valid extended hex base32 encoded string. The result of the decoding is returned as the result of the command. Note that while the encoder will generate only uppercase characters this decoder accepts input in lowercase as well. The command will always throw an error whenever encountering conditions which signal some type of bogus input, namely if [1] the input contains characters which are not valid output of a extended hex base32 encoder, [2] the length of the input is not a multiple of eight, [3] padding appears not at the end of input, but in the middle, [4] the padding has not of length six, four, three, or one characters, CODE MAP
The code map used to convert 5-bit sequences is shown below, with the numeric id of the bit sequences to the left and the character used to encode it to the right. The important feature of the extended hex mapping is that the first 16 codes map to the digits and hex characters. 0 0 9 9 18 I 27 R 1 1 10 A 19 J 28 S 2 2 11 B 20 K 29 T 3 3 12 C 21 L 30 U 4 4 13 D 22 M 31 V 5 5 14 E 23 N 6 6 15 F 24 O 7 7 16 G 25 P 8 8 17 H 26 Q BUGS, IDEAS, FEEDBACK This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category base32 of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for either package and/or documentation. KEYWORDS
base32, hex, rfc3548 CATEGORY
Text processing COPYRIGHT
Copyright (c) Public domain base32 0.1 base32::hex(n)

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