Exclude some generated files from clang-tidy run

The generated files don't pass the readability/coding style checks,
but there's nothing much we can do about that, so we just exclude
them from the check by patching compile_commands.json before running
clang-tidy.

.clang-tidy-ignore

+resourcebasesettings.cpp
+designerplugin.cpp

.gitlab-ci.yml

@@ -9,7 +9,7 @@ build_clazy_clang_tidy:
   only:
     - merge_requests
   before_script:
-    - zypper install -y clazy
+    - zypper install -y clazy jq
     - git clone --depth=1 https://invent.kde.org/sysadmin/ci-tooling.git $CI_TOOLING
     - git clone --depth=1 https://invent.kde.org/sysadmin/repo-metadata.git $CI_TOOLING/repo-metadata
     - git clone --depth=1 https://invent.kde.org/sysadmin/kde-build-metadata.git $CI_TOOLING/kde-build-metadata
@@ -24,7 +24,7 @@ build_clazy_clang_tidy:
     - python3 -u $CI_TOOLING/helpers/prepare-dependencies.py --product $PRODUCT --project $PROJECT --branchGroup $BRANCH_GROUP --environment production --platform $PLATFORM --installTo $INSTALL_PREFIX
     - python3 -u $CI_TOOLING/helpers/configure-build.py --product $PRODUCT --project $PROJECT --branchGroup $BRANCH_GROUP --platform $PLATFORM --installTo $INSTALL_PREFIX
     - python3 -u $CI_TOOLING/helpers/compile-build.py --product $PRODUCT --project $PROJECT --branchGroup $BRANCH_GROUP --platform $PLATFORM --usingInstall $INSTALL_PREFIX
-    - cd build && run-clang-tidy -j$(nproc) -q
+    -  ./tools/run-clang-tidy.sh $(pwd)/build
   variables:
     PLATFORM: SUSEQt5.14
     BRANCH_GROUP: kf5-qt5

tools/run-clang-tidy.sh

+#!/bin/sh
+# Copyright (c) 2020 Daniel Vrátil <dvratil@kde.org>
+#
+# This library is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Library General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.
+#
+# This library is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+# License for more details.
+#
+# You should have received a copy of the GNU Library General Public License
+# along with this library; see the file COPYING.LIB.  If not, write to the
+# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA.
+
+set -xe
+
+BUILDDIR=$1
+
+function sanitize_compile_commands
+{
+    local cc_file=${BUILDDIR}/compile_commands.json
+    local filter_file=".clang-tidy-ignore"
+
+    if [ ! -f "${cc_file}" ]; then
+        >&2 echo "Couldn't find compile_commands.json"
+        exit 1
+    fi
+
+    if [ ! -f "${filter_file}" ]; then
+        return 0
+    fi
+
+    filter_files=$(cat ${filter_file} | tr '\n' '|' | head -c -1)
+
+    local cc_bak_file=${cc_file}.bak
+    mv ${cc_file} ${cc_bak_file}
+
+    cat ${cc_bak_file} | jq -r "map(select(.file|test(\"${filter_files}\")|not))" > ${cc_file}
+}
+
+sanitize_compile_commands
+
+cd ${BUILDDIR}
+run-clang-tidy -j$(nproc) -q