1 /* 2 * Copyright (C) 2020 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 package android.content.pm.parsing; 18 19 import android.annotation.NonNull; 20 import android.annotation.Nullable; 21 import android.content.pm.PackageParser; 22 import android.content.pm.parsing.result.ParseInput; 23 import android.content.pm.parsing.result.ParseResult; 24 import android.content.res.XmlResourceParser; 25 import android.util.Slog; 26 27 import com.android.internal.util.XmlUtils; 28 29 import org.xmlpull.v1.XmlPullParserException; 30 31 import java.io.IOException; 32 33 /** @hide **/ 34 public class ParsingUtils { 35 36 public static final String TAG = "PackageParsing"; 37 38 public static final String ANDROID_RES_NAMESPACE = "http://schemas.android.com/apk/res/android"; 39 40 public static final int DEFAULT_MIN_SDK_VERSION = 1; 41 public static final int DEFAULT_TARGET_SDK_VERSION = 0; 42 43 @Nullable buildClassName(String pkg, CharSequence clsSeq)44 public static String buildClassName(String pkg, CharSequence clsSeq) { 45 if (clsSeq == null || clsSeq.length() <= 0) { 46 return null; 47 } 48 String cls = clsSeq.toString(); 49 char c = cls.charAt(0); 50 if (c == '.') { 51 return pkg + cls; 52 } 53 if (cls.indexOf('.') < 0) { 54 StringBuilder b = new StringBuilder(pkg); 55 b.append('.'); 56 b.append(cls); 57 return b.toString(); 58 } 59 return cls; 60 } 61 62 @NonNull unknownTag(String parentTag, ParsingPackage pkg, XmlResourceParser parser, ParseInput input)63 public static ParseResult unknownTag(String parentTag, ParsingPackage pkg, 64 XmlResourceParser parser, ParseInput input) throws IOException, XmlPullParserException { 65 if (PackageParser.RIGID_PARSER) { 66 return input.error("Bad element under " + parentTag + ": " + parser.getName()); 67 } 68 Slog.w(TAG, "Unknown element under " + parentTag + ": " 69 + parser.getName() + " at " + pkg.getBaseApkPath() + " " 70 + parser.getPositionDescription()); 71 XmlUtils.skipCurrentTag(parser); 72 return input.success(null); // Type doesn't matter 73 } 74 } 75