| /* |
| * Copyright (C) 2012 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. |
| */ |
| |
| package com.android.builder.core; |
| |
| import com.android.annotations.NonNull; |
| import com.android.annotations.Nullable; |
| import com.android.io.FileWrapper; |
| import com.android.io.StreamException; |
| import com.android.utils.XmlUtils; |
| import com.android.xml.AndroidManifest; |
| import com.android.xml.AndroidXPathFactory; |
| import com.google.common.base.Optional; |
| |
| import org.apache.http.annotation.ThreadSafe; |
| import org.xml.sax.InputSource; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| import javax.xml.xpath.XPath; |
| import javax.xml.xpath.XPathExpressionException; |
| |
| @ThreadSafe |
| class DefaultManifestParser implements ManifestParser { |
| |
| Optional<Object> mMinSdkVersion; |
| Optional<Object> mTargetSdkVersion; |
| Optional<Integer> mVersionCode; |
| Optional<String> mPackage; |
| Optional<String> mVersionName; |
| |
| @Nullable |
| @Override |
| public synchronized String getPackage(@NonNull File manifestFile) { |
| if (mPackage == null) { |
| mPackage = Optional.fromNullable(getStringValue(manifestFile, "/manifest/@package")); |
| } |
| return mPackage.orNull(); |
| } |
| |
| @Nullable |
| @Override |
| public synchronized String getVersionName(@NonNull File manifestFile) { |
| if (mVersionName == null) { |
| mVersionName = Optional.fromNullable( |
| getStringValue(manifestFile, "/manifest/@android:versionName")); |
| } |
| return mVersionName.orNull(); |
| } |
| |
| @Override |
| @NonNull |
| public synchronized int getVersionCode(@NonNull File manifestFile) { |
| if (mVersionCode == null) { |
| try { |
| String value = getStringValue(manifestFile, "/manifest/@android:versionCode"); |
| if (value != null) { |
| mVersionCode = Optional.of(Integer.valueOf(value)); |
| } |
| } catch (NumberFormatException ignored) { |
| mVersionCode = Optional.absent(); |
| } |
| } |
| return mVersionCode.or(-1); |
| } |
| |
| @Override |
| @NonNull |
| public synchronized Object getMinSdkVersion(@NonNull File manifestFile) { |
| if (mMinSdkVersion == null) { |
| try { |
| mMinSdkVersion = Optional.fromNullable( |
| AndroidManifest.getMinSdkVersion(new FileWrapper(manifestFile))); |
| } catch (XPathExpressionException e) { |
| throw new RuntimeException(e); |
| } catch (StreamException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| return mMinSdkVersion.or(1); |
| } |
| |
| @Override |
| @NonNull |
| public Object getTargetSdkVersion(@NonNull File manifestFile) { |
| if (mTargetSdkVersion == null) { |
| try { |
| mTargetSdkVersion = |
| Optional.fromNullable(AndroidManifest.getTargetSdkVersion( |
| new FileWrapper(manifestFile))); |
| } catch (XPathExpressionException e) { |
| return new RuntimeException(e); |
| } catch (StreamException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| return mTargetSdkVersion.or(-1); |
| } |
| |
| private static String getStringValue(@NonNull File file, @NonNull String xPath) { |
| XPath xpath = AndroidXPathFactory.newXPath(); |
| |
| try { |
| InputSource source = new InputSource(XmlUtils.getUtfReader(file)); |
| return xpath.evaluate(xPath, source); |
| } catch (XPathExpressionException e) { |
| // won't happen. |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| |
| return null; |
| } |
| } |