codegen_style completely replaces style gen with MetaStyle.

codegen_numbers project started to replace MetaStyle completely.

Telegram/SourceFiles/codegen/common/cpp_file.cpp

@@ -0,0 +1,135 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop version of Telegram messaging app, see https://telegram.org
+
+Telegram Desktop is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+It 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 General Public License for more details.
+
+In addition, as a special exception, the copyright holders give permission
+to link the code of portions of this program with the OpenSSL library.
+
+Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
+Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
+*/
+#include "codegen/common/cpp_file.h"
+
+#include <QtCore/QFileInfo>
+#include <QtCore/QDir>
+
+namespace codegen {
+namespace common {
+namespace {
+
+void writeLicense(QTextStream &stream, const ProjectInfo &project) {
+	stream << "\
+/*\n\
+WARNING! All changes made in this file will be lost!\n\
+Created from '" << project.source << "' by '" << project.name << "'\n\
+\n\
+This file is part of Telegram Desktop,\n\
+the official desktop version of Telegram messaging app, see https://telegram.org\n\
+\n\
+Telegram Desktop is free software: you can redistribute it and/or modify\n\
+it under the terms of the GNU General Public License as published by\n\
+the Free Software Foundation, either version 3 of the License, or\n\
+(at your option) any later version.\n\
+\n\
+It is distributed in the hope that it will be useful,\n\
+but WITHOUT ANY WARRANTY; without even the implied warranty of\n\
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n\
+GNU General Public License for more details.\n\
+\n\
+In addition, as a special exception, the copyright holders give permission\n\
+to link the code of portions of this program with the OpenSSL library.\n\
+\n\
+Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE\n\
+Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org\n\
+*/\n";
+}
+
+} // namespace
+
+CppFile::CppFile(const QString &path, const ProjectInfo &project)
+: stream_(&content_)
+, forceReGenerate_(project.forceReGenerate) {
+	bool cpp = path.toLower().endsWith(".cpp");
+
+	QFileInfo info(path);
+	info.dir().mkpath(".");
+	filepath_ = info.absoluteFilePath();
+
+	writeLicense(stream_, project);
+	if (cpp) {
+		if (!project.precompiledHeader.isEmpty()) {
+			include(project.precompiledHeader);
+		}
+		include(info.baseName() + ".h").newline();
+	} else {
+		stream() << "#pragma once";
+		newline().newline();
+	}
+}
+
+CppFile &CppFile::include(const QString &header) {
+	stream() << "#include \"" << header << "\"";
+	return newline();
+}
+
+CppFile &CppFile::pushNamespace(const QString &name) {
+	namespaces_.push_back(name);
+
+	stream() << "namespace";
+	if (!name.isEmpty()) {
+		stream() << ' ' << name;
+	}
+	stream() << " {";
+	return newline();
+}
+
+CppFile &CppFile::popNamespace() {
+	if (namespaces_.isEmpty()) {
+		return *this;
+	}
+	auto name = namespaces_.back();
+	namespaces_.pop_back();
+
+	stream() << "} // namespace";
+	if (!name.isEmpty()) {
+		stream() << ' ' << name;
+	}
+	return newline();
+}
+
+bool CppFile::finalize() {
+	while (!namespaces_.isEmpty()) {
+		popNamespace();
+	}
+	stream_.flush();
+
+	QFile file(filepath_);
+	if (!forceReGenerate_ && file.open(QIODevice::ReadOnly)) {
+		if (file.readAll() == content_) {
+			file.close();
+			return true;
+		}
+		file.close();
+	}
+
+	if (!file.open(QIODevice::WriteOnly)) {
+		return false;
+	}
+	if (file.write(content_) != content_.size()) {
+		return false;
+	}
+	return true;
+}
+
+} // namespace common
+} // namespace codegen