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/*
* Copyright (C) 2016 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/XmlActionExecutor.h"
namespace aapt {
namespace xml {
static bool wrapperOne(XmlNodeAction::ActionFunc& f, Element* el, SourcePathDiagnostics*) {
return f(el);
}
static bool wrapperTwo(XmlNodeAction::ActionFuncWithDiag& f, Element* el,
SourcePathDiagnostics* diag) {
return f(el, diag);
}
void XmlNodeAction::action(XmlNodeAction::ActionFunc f) {
mActions.emplace_back(std::bind(wrapperOne, std::move(f),
std::placeholders::_1,
std::placeholders::_2));
}
void XmlNodeAction::action(XmlNodeAction::ActionFuncWithDiag f) {
mActions.emplace_back(std::bind(wrapperTwo, std::move(f),
std::placeholders::_1,
std::placeholders::_2));
}
static void printElementToDiagMessage(const Element* el, DiagMessage* msg) {
*msg << "<";
if (!el->namespaceUri.empty()) {
*msg << el->namespaceUri << ":";
}
*msg << el->name << ">";
}
bool XmlNodeAction::execute(XmlActionExecutorPolicy policy, SourcePathDiagnostics* diag,
Element* el) const {
bool error = false;
for (const ActionFuncWithDiag& action : mActions) {
error |= !action(el, diag);
}
for (Element* childEl : el->getChildElements()) {
if (childEl->namespaceUri.empty()) {
std::map<std::u16string, XmlNodeAction>::const_iterator iter =
mMap.find(childEl->name);
if (iter != mMap.end()) {
error |= !iter->second.execute(policy, diag, childEl);
continue;
}
}
if (policy == XmlActionExecutorPolicy::Whitelist) {
DiagMessage errorMsg(childEl->lineNumber);
errorMsg << "unknown element ";
printElementToDiagMessage(childEl, &errorMsg);
errorMsg << " found";
diag->error(errorMsg);
error = true;
}
}
return !error;
}
bool XmlActionExecutor::execute(XmlActionExecutorPolicy policy, IDiagnostics* diag,
XmlResource* doc) const {
SourcePathDiagnostics sourceDiag(doc->file.source, diag);
Element* el = findRootElement(doc);
if (!el) {
if (policy == XmlActionExecutorPolicy::Whitelist) {
sourceDiag.error(DiagMessage() << "no root XML tag found");
return false;
}
return true;
}
if (el->namespaceUri.empty()) {
std::map<std::u16string, XmlNodeAction>::const_iterator iter = mMap.find(el->name);
if (iter != mMap.end()) {
return iter->second.execute(policy, &sourceDiag, el);
}
}
if (policy == XmlActionExecutorPolicy::Whitelist) {
DiagMessage errorMsg(el->lineNumber);
errorMsg << "unknown element ";
printElementToDiagMessage(el, &errorMsg);
errorMsg << " found";
sourceDiag.error(errorMsg);
return false;
}
return true;
}
} // namespace xml
} // namespace aapt
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