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#!/usr/bin/env bash
# SPDX-FileCopyrightText: 2023 Friedrich W. H. Kossebau <kossebau@kde.org>
# SPDX-License-Identifier: BSD-2-Clause
# Tool to check if any sources have moc includes for headers need moc-generated code.
# Generates include statements matching CMake's automoc moc file naming pattern
# and appends them at the end of source files, with candidate chosen by:
# * same source directory
# * same basename or, if the header's basename ends with "_p", same basename without that suffix
#
# Usage: ./addmocincludes [--dry]
# To be called in the toplevel directory of the sources to cover
#
# To check if all moc files are covered by explicit includes, one can run this on the toplevel
# build directory and test for "0" result:
# $ find . -name mocs_compilation.cpp -exec cat {} \; | grep "#include" | wc -l
filesGettingMoced="$(grep --files-with-matches --recursive --extended-regexp '^\s*Q_OBJECT|^\s*Q_GADGET|^\s*Q_NAMESPACE' | egrep -v build)"
# mm as used with Objective C++
cppExts="cpp cc cxx c++ mm"
dryRun=
if [[ ${1} == "--dry" ]]; then
dryRun=1
fi
for fileName in ${filesGettingMoced}; do
ext="${fileName##*.}"
# is not a header?
if ! [[ "${ext}" =~ ^(h|H|hh|h++|hm|hpp|hxx|txx)$ ]]; then
continue
fi
# look for paired source file
sourceFileName=
basename="${fileName%.*}"
# if private header, also check for source file without _p suffix
if [[ "${basename}" == *_p ]]; then
cppBasenames="${basename} ${basename%??}"
else
cppBasenames="${basename}"
fi
for cppBasename in ${cppBasenames}; do
for cppExt in ${cppExts}; do
cppFile="${cppBasename}.${cppExt}";
if [[ -f "${cppFile}" ]]; then
sourceFileName=${cppFile}
break
fi
done
if [ -n "${sourceFileName}" ]; then
break
fi
done
# no paired source file found?
if [ -z "${sourceFileName}" ]; then
if [[ ${dryRun} ]]; then
echo "${fileName}: NOT FOUND a matching source file for a moc include";
fi
continue
fi
# drop path & use default cpp suffix, as used by cmake's automoc
mocIncludeFile="moc_${basename##*/}.cpp"
mocIncludeStatement="#include \"${mocIncludeFile}\""
# TODO: escaping somehow fails, tried: hasIncludeStatement="$(grep --quiet '${mocIncludeStatement@Q}' '${sourceFileName}')"
if grep --quiet "#include \"${mocIncludeFile}\"" "${sourceFileName}"; then
hasIncludeStatement=1
else
hasIncludeStatement=
fi
if [[ ${hasIncludeStatement} ]]; then
if [[ ${dryRun} ]]; then
echo "${fileName}: HAS moc include in ${sourceFileName}:";
fi
else
# TODO: test if something else already has a matching include?
if [[ ${dryRun} ]]; then
echo "${fileName}: MISSES moc include in ${sourceFileName}";
else
echo "${fileName}: addding moc include in ${sourceFileName}:";
echo "" >> ${sourceFileName}
echo "${mocIncludeStatement}" >> ${sourceFileName}
fi
fi
done
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