matching colour escape codes

Faki · 05-02-2022, 12:08 AM

I am matching colour escape codes e.g. \033[21;41;32m.

How can I improve on the following

Code:

if [[ "$1" =~ \[[0123456789]+\;[0123456789]+\;[0123456789]+m ]]

smallpond · 05-02-2022, 08:34 AM

Slightly shorter, but otherwise the same:

Code:

if [[ $1 =~ \[[0-9]+\;[0-9]+\;[0-9]+m ]]

Faki · 05-02-2022, 02:39 PM

Could one also group the first two [0-9]+\; in a single expression?

Faki · 05-02-2022, 03:38 PM

Are colour formats like

Code:

\033[21;41;32;m

acceptable rather than the usual

Code:

\033[21;41;32m

pan64 · 05-02-2022, 11:34 PM

you got a very good link explaining it: https://misc.flogisoft.com/bash/tip_...and_formatting
why don't you read it?
And why don't you try it?

Faki · 05-03-2022, 04:49 PM

Figured that it might be interpreted as \033[21;41;32;0m.

This means that I cannot do

Code:

if [[ $1 =~ \[ ([0-9]+\;){3}m ]]

How can I repeat the pattern [0-9]+\; two times, followed by [0-9]+ ?

TB0ne · 05-03-2022, 05:19 PM

Quote:

Originally Posted by Faki

Figured that it might be interpreted as \033[21;41;32;0m. This means that I cannot do

Code:

if [[ $1 =~ \[ ([0-9]+\;){3}m ]]

How can I repeat the pattern [0-9]+\; two times, followed by [0-9]+ ?

Did you read post #2, where you got an exact answer??? Did you read the link from pan64, which has all the information you need??? Did you actually try the solution you were given??

Faki · 05-04-2022, 07:10 AM

Want to see if post #2 could be shortened.

pan64 · 05-04-2022, 07:35 AM

just tell me why did you insert a space inside?

Code:

if [[ $1 =~ \[ ([0-9]+\;){3}m ]]
              ^

TB0ne · 05-04-2022, 08:10 AM

Quote:

Originally Posted by Faki

Want to see if post #2 could be shortened.

Possibly can; so since you have the documentation and a good starting point, why don't YOU do it, since it's what you want to do??? Why are we doing it for you?

Faki · 05-04-2022, 03:25 PM

You are right, I put a space, which should be there.