linux-kernel - spdx spring cleaning

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Date:   Fri, 26 Feb 2021 13:32:04 +0100
From:   Rasmus Villemoes <linux@...musvillemoes.dk>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: spdx spring cleaning

Hi,

I was doing some 'git grep SPDX-License-Identifier' statistics, but
noticed that I had to do a lot more normalization than expected (clearly
handling different comment markers is needed).

How about running something like the below after -rc1? The end result is

 2558 files changed, 2558 insertions(+), 2558 deletions(-)

mostly from the last fixup, before that it's merely

 90 files changed, 90 insertions(+), 90 deletions(-)

Rasmus

#!/bin/sh

fixup() {
    gp="$1"
    cmd="$2"

    git grep --files-with-matches "SPDX-License-Identifier:$gp" | grep
-v COPYING | \
        xargs -r -P8 sed -E -s -i -e "1,3 { /SPDX-License-Identifier/ {
$cmd } }"
    git diff --stat | tail -n1
}

# tab->space, the first string is "dot asterisk tab"
fixup '.*	' 's/\t/ /g'

# trailing space
fixup '.* $' 's/ *$//'

# collapse multiple spaces
fixup '.*  ' 's/  */ /g'

# or -> OR
fixup '.* or ' 's/ or / OR /g'

# Remove outer parenthesis - when that pair is the only set of
# parenthesis. Only none or */ trailing comment marker is handled.
fixup ' (' 's|Identifier: \(([^()]*)\)( \*/)?$|Identifier: \1\2|'