1 /*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "AppInfo.h"
18 #include "Logger.h"
19 #include "ManifestParser.h"
20 #include "Source.h"
21 #include "XmlPullParser.h"
22
23 #include <string>
24
25 namespace aapt {
26
parse(const Source & source,std::shared_ptr<XmlPullParser> parser,AppInfo * outInfo)27 bool ManifestParser::parse(const Source& source, std::shared_ptr<XmlPullParser> parser,
28 AppInfo* outInfo) {
29 SourceLogger logger = { source };
30
31 int depth = 0;
32 while (XmlPullParser::isGoodEvent(parser->next())) {
33 XmlPullParser::Event event = parser->getEvent();
34 if (event == XmlPullParser::Event::kEndElement) {
35 depth--;
36 continue;
37 } else if (event != XmlPullParser::Event::kStartElement) {
38 continue;
39 }
40
41 depth++;
42
43 const std::u16string& element = parser->getElementName();
44 if (depth == 1) {
45 if (element == u"manifest") {
46 if (!parseManifest(logger, parser, outInfo)) {
47 return false;
48 }
49 } else {
50 logger.error()
51 << "unexpected top-level element '"
52 << element
53 << "'."
54 << std::endl;
55 return false;
56 }
57 } else {
58 XmlPullParser::skipCurrentElement(parser.get());
59 }
60 }
61
62 if (parser->getEvent() == XmlPullParser::Event::kBadDocument) {
63 logger.error(parser->getLineNumber())
64 << "failed to parse manifest: "
65 << parser->getLastError()
66 << "."
67 << std::endl;
68 return false;
69 }
70 return true;
71 }
72
parseManifest(SourceLogger & logger,std::shared_ptr<XmlPullParser> parser,AppInfo * outInfo)73 bool ManifestParser::parseManifest(SourceLogger& logger, std::shared_ptr<XmlPullParser> parser,
74 AppInfo* outInfo) {
75 auto attrIter = parser->findAttribute(u"", u"package");
76 if (attrIter == parser->endAttributes() || attrIter->value.empty()) {
77 logger.error() << "no 'package' attribute found for element <manifest>." << std::endl;
78 return false;
79 }
80 outInfo->package = attrIter->value;
81 return true;
82 }
83
84 } // namespace aapt
85