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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef AAPT_XML_XMLUTIL_H
#define AAPT_XML_XMLUTIL_H
#include "ResourceValues.h"
#include "util/Maybe.h"
#include <string>
namespace aapt {
namespace xml {
constexpr const char16_t* kSchemaAuto = u"http://schemas.android.com/apk/res-auto";
constexpr const char16_t* kSchemaPublicPrefix = u"http://schemas.android.com/apk/res/";
constexpr const char16_t* kSchemaPrivatePrefix = u"http://schemas.android.com/apk/prv/res/";
constexpr const char16_t* kSchemaAndroid = u"http://schemas.android.com/apk/res/android";
/**
* Result of extracting a package name from a namespace URI declaration.
*/
struct ExtractedPackage {
/**
* The name of the package. This can be the empty string, which means that the package
* should be assumed to be the package being compiled.
*/
std::u16string package;
/**
* True if the package's private namespace was declared. This means that private resources
* are made visible.
*/
bool privateNamespace;
};
/**
* Returns an ExtractedPackage struct if the namespace URI is of the form:
* http://schemas.android.com/apk/res/<package> or
* http://schemas.android.com/apk/prv/res/<package>
*
* Special case: if namespaceUri is http://schemas.android.com/apk/res-auto,
* returns an empty package name.
*/
Maybe<ExtractedPackage> extractPackageFromNamespace(const std::u16string& namespaceUri);
/**
* Interface representing a stack of XML namespace declarations. When looking up the package
* for a namespace prefix, the stack is checked from top to bottom.
*/
struct IPackageDeclStack {
virtual ~IPackageDeclStack() = default;
/**
* Returns an ExtractedPackage struct if the alias given corresponds with a package declaration.
*/
virtual Maybe<ExtractedPackage> transformPackageAlias(
const StringPiece16& alias, const StringPiece16& localPackage) const = 0;
};
/**
* Helper function for transforming the original Reference inRef to a fully qualified reference
* via the IPackageDeclStack. This will also mark the Reference as private if the namespace of
* the package declaration was private.
*/
void transformReferenceFromNamespace(IPackageDeclStack* declStack,
const StringPiece16& localPackage, Reference* inRef);
} // namespace xml
} // namespace aapt
#endif /* AAPT_XML_XMLUTIL_H */
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