How To Remove Indents From Code?

问题

Lets consider this example of code... Don't look at code, but at indents.

        protected function _hashPassword( $password, $salt, $nuts = '' ) {

            if ( $nuts === '' ) {
                $nuts = Kohana::config( 'a11n' )->nuts;
            }


            $password =
                sha1(
                    $password
                    . $salt
                    . $nuts
                );


            return $password;

        }

It's taken from much bigger source code. As you can see, it's indented by 2 tabs. I want to somehow remove indent from it without using typing. Somehow.

If I use in-editor build-in 'Replace' function and remove those two tabs like...

I get something like this (not in all cases, but almost)...

protected function _hashPassword( $password, $salt, $nuts = '' ) {

    if ( $nuts === '' ) {
$nuts = Kohana::config( 'a11n' )->nuts;
    }


    $password =
sha1(
    $password
    . $salt
    . $nuts
);


    return $password;

}

It's because there are more than only two tabs on one line and it replaces all 4 tabs.

I'm looking for regular expression that's powerful enough to remove indent nicely! Maybe there are any other solutions? Just don't suggest to write code without indents!

回答1:

select the code in your favorite modern editor, and hit shift-tab

回答2:

Surely you want to simply replace ^\t\t, or use whatever character your editor has for the start-of-line anchor if it's not ^ (I have no idea what the capabilities of your particular editor are, only a (pretty good) understanding of how most regular expression engines are driven).

This will only replace two-tab items at the start of each line.

For example, if I were doing this from the command line under Linux,

sed 's/^\t\t//g' oldfile.c >newfile.c

would do what you desire.

回答3:

Using regular expressions, replace ^\t\t with the empty string. Without using regular expressions, simply replace \n\t\t with \n. Also consider using a source code formatter.

回答4:

The following applies to Notepad++:

1) Set search mode to: Regular expression

2) Find what: ^[\t]+

3) Replace with:

Edit: This will replace 1 or more tabs from the beginning of every line.

Alternative method: select the whole source code and hit Shift-Tab multiple times. It will remove the tabs from the beginning of every line, just like the regex above. I hope this helps!

来源：https://stackoverflow.com/questions/6454466/how-to-remove-indents-from-code

标签

regex

replace

indentation