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#!/bin/sh

SPATCH="`which ${SPATCH:=spatch}`"

if [ "$C" = "1" -o "$C" = "2" ]; then
ONLINE=1

# This requires Coccinelle >= 0.2.3
# FLAGS="-ignore_unknown_options -very_quiet"
# OPTIONS=$*

# Workaround for Coccinelle < 0.2.3
    FLAGS="-I $srctree/include -very_quiet"
    shift $(( $# - 1 ))
    OPTIONS=$1
else
ONLINE=0
    FLAGS="-very_quiet"
    OPTIONS="-dir $srctree"
fi

if [ ! -x "$SPATCH" ]; then
echo 'spatch is part of the Coccinelle project and is available at http://coccinelle.lip6.fr/'
    exit 1
fi

if [ "$MODE" = "" ] ; then
if [ "$ONLINE" = "0" ] ; then
echo 'You have not explicitly specified the mode to use. Using default "chain" mode.'
echo 'All available modes will be tried (in that order): patch, report, context, org'
echo 'You can specify the mode with "make coccicheck MODE=<mode>"'
    fi
MODE="chain"
elif [ "$MODE" = "report" -o "$MODE" = "org" ] ; then
FLAGS="$FLAGS -no_show_diff"
fi

if [ "$ONLINE" = "0" ] ; then
echo ''
    echo 'Please check for false positives in the output before submitting a patch.'
    echo 'When using "patch" mode, carefully review the patch before submitting it.'
    echo ''
fi

coccinelle () {
    COCCI="$1"

    OPT=`grep "Option" $COCCI | cut -d':' -f2`

# The option '-parse_cocci' can be used to syntactically check the SmPL files.
#
# $SPATCH -D $MODE $FLAGS -parse_cocci $COCCI $OPT > /dev/null

    if [ "$ONLINE" = "0" ] ; then

FILE=`echo $COCCI | sed "s|$srctree/||"`

echo "Processing `basename $COCCI`"
echo "with option(s) \"$OPT\""
echo ''
echo 'Message example to submit a patch:'

sed -ne 's|^///||p' $COCCI

if [ "$MODE" = "patch" ] ; then
echo ' The semantic patch that makes this change is available'
elif [ "$MODE" = "report" ] ; then
echo ' The semantic patch that makes this report is available'
elif [ "$MODE" = "context" ] ; then
echo ' The semantic patch that spots this code is available'
elif [ "$MODE" = "org" ] ; then
echo ' The semantic patch that makes this Org report is available'
else
echo ' The semantic patch that makes this output is available'
fi
echo " in $FILE."
echo ''
echo ' More information about semantic patching is available at'
echo ' http://coccinelle.lip6.fr/'
echo ''

if [ "`sed -ne 's|^//#||p' $COCCI`" ] ; then
echo 'Semantic patch information:'
sed -ne 's|^//#||p' $COCCI
echo ''
fi
fi

if [ "$MODE" = "chain" ] ; then
$SPATCH -D patch $FLAGS -sp_file $COCCI $OPT $OPTIONS || \
$SPATCH -D report $FLAGS -sp_file $COCCI $OPT $OPTIONS -no_show_diff || \
$SPATCH -D context $FLAGS -sp_file $COCCI $OPT $OPTIONS || \
$SPATCH -D org $FLAGS -sp_file $COCCI $OPT $OPTIONS -no_show_diff || exit 1
    else
$SPATCH -D $MODE $FLAGS -sp_file $COCCI $OPT $OPTIONS || exit 1
    fi

}

if [ "$COCCI" = "" ] ; then
for f in `find $srctree/scripts/coccinelle/ -name '*.cocci' -type f | sort`; do
coccinelle $f
    done
else
coccinelle $COCCI
fi
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