| /* |
| * 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. |
| */ |
| package libcore.tzdata.update.tools; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.nio.charset.StandardCharsets; |
| import java.util.zip.ZipEntry; |
| import java.util.zip.ZipOutputStream; |
| import libcore.tzdata.update.ConfigBundle; |
| |
| /** |
| * A class for creating a {@link ConfigBundle} containing timezone update data. |
| */ |
| public final class TzDataBundleBuilder { |
| |
| private String tzDataVersion; |
| private StringBuilder checksumsFileContent = new StringBuilder(); |
| private File zoneInfoFile; |
| private File icuTzDataFile; |
| |
| public TzDataBundleBuilder setTzDataVersion(String tzDataVersion) { |
| this.tzDataVersion = tzDataVersion; |
| return this; |
| } |
| |
| public TzDataBundleBuilder addChecksum(String fileName, long checksum) { |
| checksumsFileContent.append(Long.toString(checksum)) |
| .append(',') |
| .append(fileName) |
| .append('\n'); |
| return this; |
| } |
| |
| public TzDataBundleBuilder addBionicTzData(File zoneInfoFile) { |
| this.zoneInfoFile = zoneInfoFile; |
| return this; |
| } |
| |
| public TzDataBundleBuilder addIcuTzData(File icuTzDataFile) { |
| this.icuTzDataFile = icuTzDataFile; |
| return this; |
| } |
| |
| /** |
| * Builds a {@link libcore.tzdata.update.ConfigBundle}. |
| */ |
| public ConfigBundle build() throws IOException { |
| if (tzDataVersion == null) { |
| throw new IllegalStateException("Missing tzDataVersion"); |
| } |
| if (zoneInfoFile == null) { |
| throw new IllegalStateException("Missing zoneInfo file"); |
| } |
| |
| return buildUnvalidated(); |
| } |
| |
| // For use in tests. |
| public TzDataBundleBuilder clearChecksumEntries() { |
| checksumsFileContent.setLength(0); |
| return this; |
| } |
| |
| // For use in tests. |
| public TzDataBundleBuilder clearBionicTzData() { |
| this.zoneInfoFile = null; |
| return this; |
| } |
| |
| /** |
| * For use in tests. Use {@link #build()}. |
| */ |
| public ConfigBundle buildUnvalidated() throws IOException { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| try (ZipOutputStream zos = new ZipOutputStream(baos)) { |
| addZipEntry(zos, ConfigBundle.CHECKSUMS_FILE_NAME, |
| checksumsFileContent.toString().getBytes(StandardCharsets.UTF_8)); |
| if (tzDataVersion != null) { |
| addZipEntry(zos, ConfigBundle.TZ_DATA_VERSION_FILE_NAME, |
| tzDataVersion.getBytes(StandardCharsets.UTF_8)); |
| } |
| if (zoneInfoFile != null) { |
| addZipEntry(zos, ConfigBundle.ZONEINFO_FILE_NAME, |
| readFileAsByteArray(zoneInfoFile)); |
| } |
| if (icuTzDataFile != null) { |
| addZipEntry(zos, ConfigBundle.ICU_DATA_FILE_NAME, |
| readFileAsByteArray(icuTzDataFile)); |
| } |
| } |
| return new ConfigBundle(baos.toByteArray()); |
| } |
| |
| private static void addZipEntry(ZipOutputStream zos, String name, byte[] content) |
| throws IOException { |
| ZipEntry zipEntry = new ZipEntry(name); |
| zipEntry.setSize(content.length); |
| zos.putNextEntry(zipEntry); |
| zos.write(content); |
| zos.closeEntry(); |
| } |
| |
| /** |
| * Returns the contents of 'path' as a byte array. |
| */ |
| public static byte[] readFileAsByteArray(File file) throws IOException { |
| byte[] buffer = new byte[8192]; |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| try (FileInputStream fis = new FileInputStream(file)) { |
| int count; |
| while ((count = fis.read(buffer)) != -1) { |
| baos.write(buffer, 0, count); |
| } |
| } |
| return baos.toByteArray(); |
| } |
| } |
| |