import com.android.dex.util.FileUtils; //导入依赖的package包/类
/**
 * Creates a new dex buffer from the dex file {@code file}.
 */
public Dex(File file) throws IOException {
    if (FileUtils.hasArchiveSuffix(file.getName())) {
        ZipFile zipFile = new ZipFile(file);
        ZipEntry entry = zipFile.getEntry(DexFormat.DEX_IN_JAR_NAME);
        if (entry != null) {
            loadFrom(zipFile.getInputStream(entry));
            zipFile.close();
        } else {
            throw new DexException("Expected " + DexFormat.DEX_IN_JAR_NAME + " in " + file);
        }
    } else if (file.getName().endsWith(".dex")) {
        loadFrom(new FileInputStream(file));
    } else {
        throw new DexException("unknown output extension: " + file);
    }
}
 

import com.android.dex.util.FileUtils; //导入依赖的package包/类
/**
 * Processes one file.
 *
 * @param file {@code non-null;} the file to process
 * @param topLevel whether this is a top-level file (that is,
 * specified directly on the commandline)
 * @return whether any processing actually happened
 */
private boolean processOne(File file, boolean topLevel) {
    try {
        if (file.isDirectory()) {
            return processDirectory(file, topLevel);
        }

        String path = file.getPath();

        if (path.endsWith(".zip") ||
                path.endsWith(".jar") ||
                path.endsWith(".apk")) {
            return processArchive(file);
        }
        if (filter.accept(path)) {
            byte[] bytes = FileUtils.readFile(file);
            return consumer.processFileBytes(path, file.lastModified(), bytes);
        } else {
            return false;
        }
    } catch (Exception ex) {
        consumer.onException(ex);
        return false;
    }
}
 

import com.android.dex.util.FileUtils; //导入依赖的package包/类
/**
 * Creates a new dex buffer from the dex file {@code file}.
 */
public Dex(File file) throws IOException {
    if (FileUtils.hasArchiveSuffix(file.getName())) {
        ZipFile zipFile = new ZipFile(file);
        ZipEntry entry = zipFile.getEntry(DexFormat.DEX_IN_JAR_NAME);
        try {
            if (entry != null) {
                try (InputStream inputStream = zipFile.getInputStream(entry)) {
                    loadFrom(inputStream);
                }
            } else {
                throw new DexException("Expected " + DexFormat.DEX_IN_JAR_NAME + " in " + file);
            }
        } finally {
            zipFile.close();
        }
    } else if (file.getName().endsWith(".dex")) {
        try (InputStream inputStream = new FileInputStream(file)) {
            loadFrom(inputStream);
        }
    } else {
        throw new DexException("unknown output extension: " + file);
    }
}
 

import com.android.dex.util.FileUtils; //导入依赖的package包/类
/**
 * Creates a new dex buffer from the dex file {@code file}.
 */
public Dex(File file) throws IOException {
    if (FileUtils.hasArchiveSuffix(file.getName())) {
        ZipFile zipFile = new ZipFile(file);
        ZipEntry entry = zipFile.getEntry(DexFormat.DEX_IN_JAR_NAME);
        if (entry != null) {
            try (InputStream inputStream = zipFile.getInputStream(entry)) {
                loadFrom(inputStream);
            }
            zipFile.close();
        } else {
            throw new DexException("Expected " + DexFormat.DEX_IN_JAR_NAME + " in " + file);
        }
    } else if (file.getName().endsWith(".dex")) {
        try (InputStream inputStream = new FileInputStream(file)) {
            loadFrom(inputStream);
        }
    } else {
        throw new DexException("unknown output extension: " + file);
    }
}