dbus/tools/cmake-format
2019-01-24 09:07:45 +01:00

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#!/bin/sh
#
# cmake-format - a simple cmake formatter
#
# Copyright (c) 2019 Ralf Habacker <ralf.habacker@freenet.de>
#
# SPDX-License-Identifier: BSD
#
# Redistribution and use is allowed according to the terms of the BSD license.
#
if test -z "$1"; then
echo "format cmake files by Ralf Habacker"
echo
echo "Usage: $0 --all | --end-args | --indents | --keyword-case | --keyword-spaces | --tabs | --trailing-spaces"
echo
echo "command line parameter:"
echo " --all all above"
echo " --end-args remove obsolete parameter list from end... cmake commands"
echo " --indents fix indents (requires keyword-case)"
echo " --keyword-case make all cmake keywords lowercase"
echo " --keyword-spaces remove spaces between keyword and opening bracket"
echo " --tabs replace tabs by 4 spaces"
echo " --trailing-spaces remove trailing spaces"
echo " --check-indents check indents"
exit 1
fi
# only apply to cmake keywords
KEYWORDS=$(cmake --help-command-list)
# do not search in comments
range="/^[ ]*#/!"
# use 4 spaces
indent="\ \ \ \ "
# remove tabs
exp="${range}s/\t/${indent}/g"
expt=$exp
# remove trailing spaces
exp="${range}s/[ \t]*$//"
expts=$exp
# fix indents
exp=
for j in $(echo $KEYWORDS); do
exp="$exp;${range}s/^ \{1,3\}$j(/${indent}$j(/g"
exp="$exp;${range}s/^ \{5,7\}$j(/${indent}${indent}$j(/g"
exp="$exp;${range}s/^ \{9,11\}$j(/${indent}${indent}${indent}$j(/g"
done
expki=$exp
# convert upper case keywords to lower case
exp=
for j in $(echo $KEYWORDS); do
u=$(echo $j | sed 's/.*/\U&/')
exp="$exp;${range}s/$u[ \t]*(/$j(/g"
done
expku=$exp
# remove spaces after keywords and (
exp=
for j in $(echo $KEYWORDS); do
exp="$exp;${range}s/$j[ \t]\+(/$j(/g"
done
expks=$exp
# remove obsolete arguments from end...()
exp=
for j in $(echo $KEYWORDS); do
e=$(echo $j | grep '^end')
if test -n "$e"; then
exp="$exp;${range}s/$j(.*)/$j()/g"
fi
done
expke=$exp
if test "$1" == "--all"; then
exp="${expt}${expts}${expku}${expki}${expks}${expke}"
elif test "$1" == "--end-args"; then
exp=$expke
elif test "$1" == "--indents"; then
exp=$expki
elif test "$1" == "--keyword-case"; then
exp=$expku
elif test "$1" == "--keyword-spaces"; then
exp=$expks
elif test "$1" == "--tabs"; then
exp=$expt
elif test "$1" == "--trailing-spaces"; then
exp=$expts
fi
# setup dir to apply
s=$(dirname $0)
root=$(realpath $s/..)
#echo $exp
#echo $root
if test "$1" = "--check-indents"; then
echo "locations with unusual indention level changes, please inspect"
fi
# script for checking indents
awk='BEGIN { debug=0; indent=0 }
$0 ~ /^ {0}/ && $0 !~ /^$/{ indent=0; }
$0 ~ /^ {4}/ { indent=1; }
$0 ~ /^ {8}/ { indent=2; }
$0 ~ /^ {12}/ { indent=3; }
debug == 1 { print FILENAME "[" NR "]:" indent " " oldindent ": " $0; }
{ if (indent - oldindent > 1) print FILENAME ":" NR ":" $0; }
{ oldindent = indent;}
'
# apply to cmake related files
for i in $(find $root -name 'CMakeLists.txt' -o -name '*.cmake' | grep -v README.cmake | grep -v config.h.cmake | grep -v bat.cmake | grep -v '/Find'); do
# apply style
if ! test "$1" = "--check-indents"; then
sed -i "$exp" $i
else
gawk "$awk" $i
fi
done