clang-format CI check

clang-format.sh

#!/bin/bash

set -e

FIND=/usr/bin/find
GIT=/usr/bin/git
XARGS=/usr/bin/xargs
CLANG_FORMAT=/usr/bin/clang-format-6.0

DIRECTORY=%system.target.directory%
if [ "$DIRECTORY" == "" ]; then
    DIRECTORY="Source"
fi

if [ ! -d $DIRECTORY/ ]; then
    echo "Happily skipping $DIRECTORY: nothing to check means no errors." 1>&2
    exit
fi

echo "Go to $DIRECTORY/"        1>&2
cd "$DIRECTORY/"

$FIND . -type f -name '*.cpp' -print0 | $XARGS -0 $CLANG_FORMAT -i
$FIND . -type f -name '*.h'   -print0 | $XARGS -0 $CLANG_FORMAT -i

# only local dir
if ! git diff --exit-code . 1>&2; then
    REP=`mktemp`
    echo -n '{"text":"clang-format check\n'                            >> $REP
    ( git describe --all --long ; git status --short . ) | sed -e 's/$/\\n/' | tr -d '\n'   >> $REP
    echo    '"}'                                            >> $REP

    echo -n "Report to slack: "
    curl                                                                        \
        --silent                                                                \
        -X POST                                                                 \
        -H 'Content-type: application/json'                                     \
        --data @$REP                                                            \
        %system.slack.webhook%

    rm $REP

    false
fi

echo "No changes found"         1>&2