com.taobao.android.apatch.MergePatch.java Source code

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package com.taobao.android.apatch;

import com.taobao.android.dex.Dex;
import com.taobao.android.differ.dex.PatchException;
import com.taobao.android.dx.merge.CollisionPolicy;
import com.taobao.android.dx.merge.DexMerger;
import org.apache.commons.io.FileUtils;

import java.io.File;
import java.io.IOException;
import java.sql.Date;
import java.util.Arrays;
import java.util.List;
import java.util.jar.Attributes;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.jar.Manifest;

/**
 * @author sanping.li@alipay.com
 */
public class MergePatch extends Build {

    private File[] patchs;

    public MergePatch(File[] patchs, String name, File out) {
        super(name, out);
        this.patchs = patchs;
        assert null != patchs;
    }

    public File doMerge() throws PatchException {
        try {
            File dexFile = new File(out, "merge.dex");
            if (dexFile.exists() && !dexFile.delete()) {
                throw new RuntimeException("merge.dex can't be removed.");
            }
            File outFile = new File(out, "merge" + SUFFIX);
            if (dexFile.exists() && !dexFile.delete()) {
                throw new RuntimeException("merge" + SUFFIX + " can't be removed.");
            }
            if (patchs.length > 1) {
                mergeCode(dexFile);
                build(outFile, dexFile);
                return release(out, dexFile, outFile);
            } else if (patchs.length == 1) {
                return patchs[0];
            }
        } catch (Exception e) {
            throw new PatchException(e);
        }
        return null;
    }

    private void mergeCode(File dexFile) throws IOException {
        Dex dexA = null;
        Dex dexB = null;
        for (File file : patchs) {
            if (!dexFile.exists() && dexA == null) {
                dexA = getDexFromJar(file);
                continue;
            } else if (dexFile.exists()) {
                dexA = new Dex(dexFile);
            }
            dexB = getDexFromJar(file);
            Dex[] dexs = new Dex[2];
            dexs[0] = dexA;
            dexs[1] = dexB;
            //            List<Dex>dexes = new ArrayList<>();
            List<Dex> dexes = Arrays.asList(dexs);
            DexMerger dexMerger = new DexMerger(dexes, CollisionPolicy.FAIL);
            dexMerger.merge().writeTo(dexFile);
        }
    }

    private Dex getDexFromJar(File file) throws IOException {
        JarFile jarFile = null;
        try {
            jarFile = new JarFile(file);
            JarEntry dexEntry = jarFile.getJarEntry("classes.dex");
            return new Dex(jarFile.getInputStream(dexEntry));
        } finally {
            if (jarFile != null) {
                jarFile.close();
            }
        }
    }

    @SuppressWarnings("deprecation")
    @Override
    protected Manifest getMeta() {
        Manifest retManifest = new Manifest();
        Attributes main = retManifest.getMainAttributes();
        main.putValue("Manifest-Version", "1.0");
        main.putValue("Created-By", "1.0 (ApkPatch)");
        main.putValue("Created-Time", new Date(System.currentTimeMillis()).toGMTString());
        main.putValue("Patch-Name", name);

        try {
            fillManifest(main);
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
        return retManifest;
    }

    private void fillManifest(Attributes main) throws IOException {
        JarFile jarFile;
        Manifest manifest;
        StringBuffer fromBuffer = new StringBuffer();
        StringBuffer toBuffer = new StringBuffer();
        String from;
        String to;
        String name;
        // String classes;
        for (File file : patchs) {
            jarFile = new JarFile(file);
            JarEntry dexEntry = jarFile.getJarEntry("META-INF/PATCH.MF");
            manifest = new Manifest(jarFile.getInputStream(dexEntry));
            Attributes attributes = manifest.getMainAttributes();

            from = attributes.getValue("From-File");
            if (fromBuffer.length() > 0) {
                fromBuffer.append(',');
            }
            fromBuffer.append(from);
            to = attributes.getValue("To-File");
            if (toBuffer.length() > 0) {
                toBuffer.append(',');
            }
            toBuffer.append(to);

            name = attributes.getValue("Patch-Name");
            // classes = attributes.getValue(name + "-Patch-Classes");
            main.putValue(name + "-Patch-Classes", attributes.getValue(name + "-Patch-Classes"));
            main.putValue(name + "-Prepare-Classes", attributes.getValue(name + "-Prepare-Classes"));
            main.putValue(name + "-Used-Methods", attributes.getValue(name + "-Used-Methods"));
            main.putValue(name + "-Modified-Classes", attributes.getValue(name + "-Modified-Classes"));
            main.putValue(name + "-Used-Classes", attributes.getValue(name + "-Used-Classes"));
            main.putValue(name + "-add-classes", attributes.getValue(name + "-add-classes"));

        }
        main.putValue("From-File", fromBuffer.toString());
        main.putValue("To-File", toBuffer.toString());
    }

    public static void main(String[] args) throws IOException, PatchException {

        File tablauncher = new File("/Users/seker/log/temp/tablauncher.apatch");
        File commonbiz = new File("/Users/seker/log/temp/commonbiz.apatch");

        File[] files = new File[] { tablauncher, commonbiz };

        File out = new File("/Users/seker/log/temp/apatch/");
        FileUtils.cleanDirectory(out);

        String keystore = "/Users/seker/programs/debugsign/seker.keystore";
        String password = "12345678";
        String alias = "seker.keystore";
        String entry = "12345678";
        String name = "main";

        MergePatch mergePatch = new MergePatch(files, name, out);
        mergePatch.doMerge();
    }
}