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#!/bin/sh
#
# Check that Go files have been formatted
#
for file in `git diff-index --cached --name-only HEAD --diff-filter=ACMR| grep "\.go$"` ; do
echo "Checking ${file} ..."
# nf is the temporary checkout. This makes sure we check against the
# revision in the index (and not the checked out version).
nf=`git checkout-index --temp "${file}" | cut -f 1`
newfile=`mktemp "/tmp/${nf}.XXXXXX"` || exit 1
gofmt ${nf} > "${newfile}" 2>> /dev/null
diff -u -p "${nf}" "${newfile}"
r=$?
rm "${newfile}"
rm "${nf}"
if [ $r != 0 ] ; then
echo "================================================================================================="
echo " Code format error in: $file "
echo " "
echo " Please fix before committing. Don't forget to run git add before trying to commit again. "
echo " If the whole file is to be committed, this should work (run from the top-level directory): "
echo " "
echo " go fmt $file; git add $file; git commit"
echo " "
echo "================================================================================================="
exit 1
fi
done
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