替换崇高文字中的正则表达式

Question

I have application where few labels are written like

ui-label-Display Not Masked

Now I want to replace it by

ui-label-Display_Not_Masked

so i have written search regex by

ui-label-(\w+ )*

This searches all expression but I am not able to create a expression to replace this text as required. I have written one regex

$1_

which replaces

ui-label-Display Not Masked 

by

ui-label-Display Not_Masked 

Answer 1

This cannot be done with a single regex in a single iteration. You have two choices:

1. Replace (ui-label-\\w+) (note the space at the end) with $1_ until it no longer matches anything.
2. Make a looong regex with as many capture groups as necessary, ie (ui-label-\\w+) (?:(\\w+)(?: (\\w+))?)? and replace with $1_$2_$3 .