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Telegram/lib_base/base/base_file_utilities.cpp

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+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#include "base/base_file_utilities.h"
+
+#include "base/platform/base_platform_file_utilities.h"
+
+#include <QtCore/QResource>
+
+namespace base {
+
+QString FileNameFromUserString(QString name) {
+	// We don't want LTR/RTL mark/embedding/override/isolate chars
+	// in filenames, because they introduce a security issue, when
+	// an executable "Fil[x]gepj.exe" may look like "Filexe.jpeg".
+	const ushort kBad[] = {
+		0x200E, // LTR Mark
+		0x200F, // RTL Mark
+		0x202A, // LTR Embedding
+		0x202B, // RTL Embedding
+		0x202D, // LTR Override
+		0x202E, // RTL Override
+		0x2066, // LTR Isolate
+		0x2067, // RTL Isolate
+		'/', '\\', '<', '>', ':', '"', '|', '?', '*' };
+	for (auto &ch : name) {
+		if (ch.unicode() < 32 || ranges::find(kBad, ch.unicode()) != end(kBad)) {
+			ch = '_';
+		}
+	}
+	if (name.isEmpty() || name.endsWith(' ') || name.endsWith('.')) {
+		name.append('_');
+	}
+	return Platform::FileNameFromUserString(std::move(name));
+}
+
+void RegisterBundledResources(const QString &name) {
+	const auto location = Platform::BundledResourcesPath();
+	if (!QResource::registerResource(location + '/' + name)) {
+		Unexpected("Packed resources not found.");
+	}
+}
+
+} // namespace base