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scripts/clean-includes: Enhance to handle header files

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Enhance clean-includes to handle header files as well as .c source
files. For headers we merely remove all the redundant #include
lines, including any includes of qemu/osdep.h itself.

There is a simple mollyguard on the include file processing to
skip a few key headers like osdep.h itself, to avoid producing
bad patches if the script is run on every file in include/.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Peter Maydell 2016-02-23 11:58:02 +00:00
parent e78490c44c
commit fd3e39a40c
1 changed files with 44 additions and 7 deletions
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41
scripts/clean-includes
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@ -1,7 +1,8 @@
#!/bin/sh -e
#
# Clean up QEMU #include lines by ensuring that qemu/osdep.h
# is the first include listed.
# is the first include listed in .c files, and no headers provided
# by osdep.h itself are redundantly included in either .c or .h files.
#
# Copyright (c) 2015 Linaro Limited
#
@ -22,6 +23,11 @@
# This script requires Coccinelle to be installed.
# .c files will have the osdep.h included added, and redundant
# includes removed.
# .h files will have redundant includes (including includes of osdep.h)
# removed.
# Other files (including C++ and ObjectiveC) can't be handled by this script.
# The following one-liner may be handy for finding files to run this on.
# However some caution is required regarding files that might be part
@ -73,13 +79,44 @@ EOT
for f in "$@"; do
# First, use coccinelle to add qemu/osdep.h before the first existing include
case "$f" in
*.c)
MODE=c
;;
*include/qemu/osdep.h | \
*include/qemu/compiler.h | \
*include/config.h | \
*include/standard-headers/ )
# Removing include lines from osdep.h itself would be counterproductive.
echo "SKIPPING $f (special case header)"
continue
;;
*include/standard-headers/*)
echo "SKIPPING $f (autogenerated header)"
continue
;;
*.h)
MODE=h
;;
*)
echo "WARNING: ignoring $f (cannot handle non-C files)"
continue
;;
esac
if [ "$MODE" = "c" ]; then
# First, use Coccinelle to add qemu/osdep.h before the first existing include
# (this will add two lines if the file uses both "..." and <...> #includes,
# but we will remove the extras in the next step)
spatch --in-place --no-show-diff --cocci-file "$COCCIFILE" "$f"
# Now remove any duplicate osdep.h includes
perl -n -i -e 'print if !/#include "qemu\/osdep.h"/ || !$n++;' "$f"
else
# Remove includes of osdep.h itself
perl -n -i -e 'print if !/\s*#\s*include\s*(["<][^>"]*[">])/ ||
! (grep { $_ eq $1 } qw ("qemu/osdep.h"))' "$f"
fi
# Remove includes that osdep.h already provides
perl -n -i -e 'print if !/\s*#\s*include\s*(["<][^>"]*[">])/ ||