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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.
*/
#include "xml/XmlUtil.h"
#include <string>
#include "util/Maybe.h"
#include "util/Util.h"
using android::StringPiece;
namespace aapt {
namespace xml {
std::string BuildPackageNamespace(const StringPiece& package,
bool private_reference) {
std::string result =
private_reference ? kSchemaPrivatePrefix : kSchemaPublicPrefix;
result.append(package.data(), package.size());
return result;
}
Maybe<ExtractedPackage> ExtractPackageFromNamespace(
const std::string& namespace_uri) {
if (util::StartsWith(namespace_uri, kSchemaPublicPrefix)) {
StringPiece schema_prefix = kSchemaPublicPrefix;
StringPiece package = namespace_uri;
package = package.substr(schema_prefix.size(),
package.size() - schema_prefix.size());
if (package.empty()) {
return {};
}
return ExtractedPackage{package.to_string(), false /* is_private */};
} else if (util::StartsWith(namespace_uri, kSchemaPrivatePrefix)) {
StringPiece schema_prefix = kSchemaPrivatePrefix;
StringPiece package = namespace_uri;
package = package.substr(schema_prefix.size(),
package.size() - schema_prefix.size());
if (package.empty()) {
return {};
}
return ExtractedPackage{package.to_string(), true /* is_private */};
} else if (namespace_uri == kSchemaAuto) {
return ExtractedPackage{std::string(), true /* is_private */};
}
return {};
}
void TransformReferenceFromNamespace(IPackageDeclStack* decl_stack,
const StringPiece& local_package,
Reference* in_ref) {
if (in_ref->name) {
if (Maybe<ExtractedPackage> transformed_package =
decl_stack->TransformPackageAlias(in_ref->name.value().package,
local_package)) {
ExtractedPackage& extracted_package = transformed_package.value();
in_ref->name.value().package = std::move(extracted_package.package);
// If the reference was already private (with a * prefix) and the
// namespace is public,
// we keep the reference private.
in_ref->private_reference |= extracted_package.private_namespace;
}
}
}
} // namespace xml
} // namespace aapt
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