pre-commit hook: Add clang-format check

3 files changed, 30 insertions, 0 deletions

diff --git a/hooks/README.md b/hooks/README.md
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+The commit hook has been copied from the kmail source code.
+
+To install, symlink the hooks into ``.git/hooks``
diff --git a/hooks/clang-format.sh b/hooks/clang-format.sh
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+#!/usr/bin/env bash
+
+# Based on okular/hooks/pre-commit, credits go to Albert Astals Cid
+
+readonly output=$(git clang-format --extensions 'cpp,h,hpp,c' -v --diff)
+
+if [[ ! -f .clang-format ]]; then
+    if [[ TRUE = TRUE ]]; then
+        echo "ERROR: no .clang-format file found in repository root, abort format"
+        echo "       run cmake for this repository to generate it"
+    else
+        echo "ERROR: no .clang-format file found in repository root, abort format"
+        echo "Make sure the KDEClangFormat CMake module is included, which will copy the KDE .clang-format file during the CMake configuration."
+        echo "Alternatively you can manually copy a .clang-format file to the repository root directory."
+    fi
+    exit 1
+fi
+if [[ "$output" == *"no modified files to format"* ]]; then exit 0; fi
+if [[ "$output" == *"clang-format did not modify any files"* ]]; then exit 0; fi
+
+echo "ERROR: You have unformatted changes, please format your files. You can do this using the following commands:"
+echo "       git clang-format --extensions 'cpp,h,hpp,c' --force # format the changed parts"
+echo "       git clang-format --extensions 'cpp,h,hpp,c' --diff # preview the changes done by the formatter"
+exit 1
diff --git a/hooks/pre-commit b/hooks/pre-commit
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+#!/usr/bin/env bash
+
+./hooks/clang-format.sh