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#!/bin/sh -e
#
# Clean up QEMU #include lines by ensuring that qemu/osdep.h
# 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
#
# Authors:
# Peter Maydell <peter.maydell@linaro.org>
#
# This work is licensed under the terms of the GNU GPL, version 2
# or (at your option) any later version. See the COPYING file in
# the top-level directory.
# Usage:
# clean-includes [--git subjectprefix] file ...
# or
# clean-includes [--git subjectprefix] --all
#
# If the --git subjectprefix option is given, then after making
# the changes to the files this script will create a git commit
# with the subject line "subjectprefix: Clean up includes"
# and a boilerplate commit message.
#
# Using --all will cause clean-includes to run on the whole source
# tree (excluding certain directories which are known not to need
# handling).
# 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
# of the guest agent or standalone tests.
# for i in `git ls-tree --name-only HEAD` ; do test -f $i && \
# grep -E '^# *include' $i | head -1 | grep 'osdep.h' ; test $? != 0 && \
# echo $i ; done
GIT=no
# Extended regular expression defining files to ignore when using --all
XDIRREGEX='^(tests/tcg|tests/multiboot|pc-bios|disas/libvixl)'
if [ $# -ne 0 ] && [ "$1" = "--git" ]; then
if [ $# -eq 1 ]; then
echo "--git option requires an argument"
exit 1
fi
GITSUBJ="$2"
GIT=yes
shift
shift
fi
if [ $# -eq 0 ]; then
echo "Usage: clean-includes [--git subjectprefix] [--all | foo.c ...]"
echo "(modifies the files in place)"
exit 1
fi
if [ "$1" = "--all" ]; then
# We assume there are no files in the tree with spaces in their name
set -- $(git ls-files '*.[ch]' | grep -E -v "$XDIRREGEX")
fi
# Annoyingly coccinelle won't read a scriptfile unless its
# name ends '.cocci', so write it out to a tempfile with the
# right kind of name.
COCCIFILE="$(mktemp --suffix=.cocci)"
trap 'rm -f -- "$COCCIFILE"' INT TERM HUP EXIT
cat >"$COCCIFILE" <<EOT
@@
@@
(
+ #include "qemu/osdep.h"
#include "..."
|
+ #include "qemu/osdep.h"
#include <...>
)
EOT
for f in "$@"; do
case "$f" in
*.inc.c)
# These aren't standalone C source files
echo "SKIPPING $f (not a standalone source file)"
continue
;;
*.c)
MODE=c
;;
*include/qemu/osdep.h | \
*include/qemu/compiler.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*(["<][^>"]*[">])/ ||
! (grep { $_ eq $1 } qw (
"config-host.h" "qemu/compiler.h" "config.h"
<stdarg.h> <stddef.h> <stdbool.h> <stdint.h> <sys/types.h>
<stdlib.h> <stdio.h> <string.h> <strings.h> <inttypes.h>
<limits.h> <unistd.h> <time.h> <ctype.h> <errno.h> <fcntl.h>
<sys/stat.h> <sys/time.h> <assert.h> <signal.h>
"glib-compat.h" "qapi/error.h"
))' "$f"
done
if [ "$GIT" = "yes" ]; then
git add -- "$@"
git commit --signoff -F - <<EOF
$GITSUBJ: Clean up includes
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.
This commit was created with scripts/clean-includes.
EOF
fi
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