Friday, June 12, 2015

substituting a function name with sed and find

I needed to change a

function foo('', '', 'whatever') 

to a


in a bunch of files.

There are many ways to do this, I decided to edit directly the files with good ol' find & sed

find . -name "*.js" -exec sed --in-place -re "s/foo\([^,]*,[^,]*,[^'\"]*(['\"])(.*)\1/bar('\2')/g" {} \;

-r: Key points where to use the full extended regular expression
-r: expression
\1: notice I match the initial ' or " with a back reference!

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