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Diffstat (limited to 'tools/aapt2/ScopedXmlPullParser.h')
-rw-r--r-- | tools/aapt2/ScopedXmlPullParser.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/tools/aapt2/ScopedXmlPullParser.h b/tools/aapt2/ScopedXmlPullParser.h new file mode 100644 index 0000000..a040f60 --- /dev/null +++ b/tools/aapt2/ScopedXmlPullParser.h @@ -0,0 +1,85 @@ +/* + * 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_SCOPED_XML_PULL_PARSER_H +#define AAPT_SCOPED_XML_PULL_PARSER_H + +#include "XmlPullParser.h" + +#include <string> + +namespace aapt { + +/** + * An XmlPullParser that will not read past the depth + * of the underlying parser. When this parser is destroyed, + * it moves the underlying parser to the same depth it + * started with. + * + * You can write code like this: + * + * while (XmlPullParser::isGoodEvent(parser.next())) { + * if (parser.getEvent() != XmlPullParser::Event::StartElement) { + * continue; + * } + * + * ScopedXmlPullParser scoped(parser); + * if (parser.getElementName() == u"id") { + * // do work. + * } else { + * // do nothing, as all the sub elements will be skipped + * // when scoped goes out of scope. + * } + * } + */ +class ScopedXmlPullParser : public XmlPullParser { +public: + ScopedXmlPullParser(XmlPullParser* parser); + ScopedXmlPullParser(const ScopedXmlPullParser&) = delete; + ScopedXmlPullParser& operator=(const ScopedXmlPullParser&) = delete; + ~ScopedXmlPullParser(); + + Event getEvent() const override; + const std::string& getLastError() const override; + Event next() override; + + const std::u16string& getComment() const override; + size_t getLineNumber() const override; + size_t getDepth() const override; + + const std::u16string& getText() const override; + + const std::u16string& getNamespacePrefix() const override; + const std::u16string& getNamespaceUri() const override; + bool applyPackageAlias(std::u16string* package, const std::u16string& defaultPackage) + const override; + + const std::u16string& getElementNamespace() const override; + const std::u16string& getElementName() const override; + + const_iterator beginAttributes() const override; + const_iterator endAttributes() const override; + size_t getAttributeCount() const override; + +private: + XmlPullParser* mParser; + size_t mDepth; + bool mDone; +}; + +} // namespace aapt + +#endif // AAPT_SCOPED_XML_PULL_PARSER_H |