Remove SnakeYAML for manual YAML Parser

brut.apktool/apktool-cli/build.gradle

@@ -89,7 +89,6 @@ tasks.register('proguard', ProGuardTask) {
     dontwarn 'javax.xml.xpath.**'
     dontnote '**'
     // between Java 1.8 and 1.9, the signature of `flip()` changed, which trips up proguard.
-    dontwarn 'org.yaml.snakeyaml.scanner.ScannerImpl'
 
     def outPath = jar.getDestinationDirectory().getAsFile().get().toString()
     def extension = jar.archiveExtension.get().toString()

brut.apktool/apktool-lib/build.gradle

@@ -39,7 +39,6 @@ dependencies {
 
     implementation depends.baksmali
     implementation depends.smali
-    implementation depends.snakeyaml
     implementation depends.xmlpull
     implementation depends.guava
     implementation depends.commons_lang

brut.apktool/apktool-lib/src/main/java/brut/androlib/ApkDecoder.java

@@ -165,7 +165,7 @@ public ApkInfo decode(File outDir) throws AndrolibException, IOException, Direct
 
             copyRawFiles(outDir);
             copyUnknownFiles(apkInfo, outDir);
-            Collection<String> mUncompressedFiles = new ArrayList<>();
+            List<String> mUncompressedFiles = new ArrayList<>();
             recordUncompressedFiles(apkInfo, resourcesDecoder.getResFileMapping(), mUncompressedFiles);
             copyOriginalFiles(outDir);
             writeApkInfo(apkInfo, outDir);
@@ -220,11 +220,7 @@ private boolean hasMultipleSources() throws AndrolibException {
     }
 
     private void writeApkInfo(ApkInfo apkInfo, File outDir) throws AndrolibException {
-        try {
-            apkInfo.save(new File(outDir, "apktool.yml"));
-        } catch (IOException ex) {
-            throw new AndrolibException(ex);
-        }
+        apkInfo.save(new File(outDir, "apktool.yml"));
     }
 
     private void copyManifestRaw(File outDir)
@@ -376,7 +372,7 @@ private void copyOriginalFiles(File outDir)
 
     private void recordUncompressedFiles(ApkInfo apkInfo,
                                          Map<String, String> resFileMapping,
-                                         Collection<String> uncompressedFilesOrExts)
+                                         List<String> uncompressedFilesOrExts)
         throws AndrolibException {
         try {
             Directory unk = mApkFile.getDirectory();

brut.apktool/apktool-lib/src/main/java/brut/androlib/apk/ApkInfo.java

@@ -21,18 +21,14 @@
 import brut.androlib.res.data.ResConfigFlags;
 import brut.directory.DirectoryException;
 import brut.directory.FileDirectory;
-import org.yaml.snakeyaml.DumperOptions;
-import org.yaml.snakeyaml.LoaderOptions;
-import org.yaml.snakeyaml.Yaml;
-import org.yaml.snakeyaml.introspector.PropertyUtils;
 
 import java.io.*;
-import java.nio.charset.StandardCharsets;
-import java.util.Collection;
+import java.util.ArrayList;
 import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 
-public class ApkInfo {
+public class ApkInfo implements YamlSerializable {
     public String version;
 
     private String apkFileName;
@@ -45,7 +41,7 @@ public class ApkInfo {
     public boolean sharedLibrary;
     public boolean sparseResources;
     public Map<String, String> unknownFiles;
-    public Collection<String> doNotCompress;
+    public List<String> doNotCompress;
 
     /** @deprecated use {@link #resourcesAreCompressed} */
     public boolean compressionType;
@@ -54,26 +50,6 @@ public ApkInfo() {
         this.version = ApktoolProperties.getVersion();
     }
 
-    private static Yaml getYaml() {
-        DumperOptions dumpOptions = new DumperOptions();
-        dumpOptions.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
-
-        EscapedStringRepresenter representer = new EscapedStringRepresenter();
-        PropertyUtils propertyUtils = representer.getPropertyUtils();
-        propertyUtils.setSkipMissingProperties(true);
-
-        LoaderOptions loaderOptions = new LoaderOptions();
-        loaderOptions.setCodePointLimit(10 * 1024 * 1024); // 10mb
-
-        return new Yaml(new ClassSafeConstructor(), representer, dumpOptions, loaderOptions);
-    }
-
-    public void save(Writer output) {
-        DumperOptions options = new DumperOptions();
-        options.setDefaultFlowStyle(DumperOptions.FlowStyle.BLOCK);
-        getYaml().dump(this, output);
-    }
-
     public String checkTargetSdkVersionBounds() {
         int target = mapSdkShorthandToVersion(getTargetSdkVersion());
 
@@ -157,28 +133,111 @@ private int mapSdkShorthandToVersion(String sdkVersion) {
         }
     }
 
-    public void save(File file) throws IOException {
-        try(
-                FileOutputStream fos = new FileOutputStream(file);
-                OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fos, StandardCharsets.UTF_8);
-                Writer writer = new BufferedWriter(outputStreamWriter)
+    public void save(File file) throws AndrolibException {
+        try (
+            YamlWriter writer = new YamlWriter(new FileOutputStream(file));
         ) {
-            save(writer);
+            write(writer);
+        } catch (FileNotFoundException e) {
+            throw new AndrolibException("File not found");
+        } catch (Exception e) {
+            throw new AndrolibException(e);
         }
     }
 
-    public static ApkInfo load(InputStream is) {
-        return getYaml().loadAs(is, ApkInfo.class);
+    public static ApkInfo load(InputStream is) throws AndrolibException {
+        // return getYaml().loadAs(is, ApkInfo.class);
+        YamlReader reader = new YamlReader(is);
+        ApkInfo apkInfo = new ApkInfo();
+        reader.readRoot(apkInfo);
+        return apkInfo;
     }
 
     public static ApkInfo load(File appDir)
         throws AndrolibException {
         try(
-            InputStream in = new FileDirectory(appDir).getFileInput("apktool.yml")
+            InputStream in = new FileDirectory(appDir).getFileInput("apktool.yml");
         ) {
             return ApkInfo.load(in);
         } catch (DirectoryException | IOException ex) {
             throw new AndrolibException(ex);
         }
     }
+
+    @Override
+    public void readItem(YamlReader reader) throws AndrolibException {
+        YamlLine line = reader.getLine();
+        switch (line.getKey()) {
+            case "version": {
+                this.version = line.getValue();
+                break;
+            }
+            case "apkFileName": {
+                this.apkFileName = line.getValue();
+                break;
+            }
+            case "isFrameworkApk": {
+                this.isFrameworkApk = line.getValueBool();
+                break;
+            }
+            case "usesFramework": {
+                this.usesFramework = new UsesFramework();
+                reader.readObject(usesFramework);
+                break;
+            }
+            case "sdkInfo": {
+                reader.readMap(sdkInfo);
+                break;
+            }
+            case "packageInfo": {
+                this.packageInfo = new PackageInfo();
+                reader.readObject(packageInfo);
+                break;
+            }
+            case "versionInfo": {
+                this.versionInfo = new VersionInfo();
+                reader.readObject(versionInfo);
+                break;
+            }
+            case "compressionType":
+            case "resourcesAreCompressed": {
+                this.resourcesAreCompressed = line.getValueBool();
+                break;
+            }
+            case "sharedLibrary": {
+                this.sharedLibrary = line.getValueBool();
+                break;
+            }
+            case "sparseResources": {
+                this.sparseResources = line.getValueBool();
+                break;
+            }
+            case "unknownFiles": {
+                this.unknownFiles = new LinkedHashMap<>();
+                reader.readMap(unknownFiles);
+                break;
+            }
+            case "doNotCompress": {
+                this.doNotCompress = new ArrayList<>();
+                reader.readStringList(doNotCompress);
+                break;
+            }
+        }
+    }
+
+    @Override
+    public void write(YamlWriter writer) {
+        writer.writeString("version", version);
+        writer.writeString("apkFileName", apkFileName);
+        writer.writeBool("isFrameworkApk", isFrameworkApk);
+        writer.writeObject("usesFramework", usesFramework);
+        writer.writeStringMap("sdkInfo", sdkInfo);
+        writer.writeObject("packageInfo", packageInfo);
+        writer.writeObject("versionInfo", versionInfo);
+        writer.writeBool("resourcesAreCompressed", resourcesAreCompressed);
+        writer.writeBool("sharedLibrary", sharedLibrary);
+        writer.writeBool("sparseResources", sparseResources);
+        writer.writeStringMap("unknownFiles", unknownFiles);
+        writer.writeList("doNotCompress", doNotCompress);
+    }
 }

brut.apktool/apktool-lib/src/main/java/brut/androlib/apk/PackageInfo.java

@@ -16,7 +16,31 @@
  */
 package brut.androlib.apk;
 
-public class PackageInfo {
+import brut.androlib.exceptions.AndrolibException;
+
+public class PackageInfo implements YamlSerializable {
     public String forcedPackageId;
     public String renameManifestPackage;
+
+    @Override
+    public void readItem(YamlReader reader) throws AndrolibException {
+        YamlLine line = reader.getLine();
+        switch (line.getKey()) {
+            case "forcedPackageId": {
+                forcedPackageId = line.getValue();
+                break;
+            }
+            case "renameManifestPackage": {
+                renameManifestPackage = line.getValue();
+                break;
+            }
+        }
+    }
+
+    @Override
+    public void write(YamlWriter writer) {
+        writer.writeString("forcedPackageId", forcedPackageId);
+        writer.writeString("renameManifestPackage", renameManifestPackage);
+    }
+
 }

brut.apktool/apktool-lib/src/main/java/brut/androlib/apk/UsesFramework.java

@@ -16,9 +16,34 @@
  */
 package brut.androlib.apk;
 
+import brut.androlib.exceptions.AndrolibException;
+
+import java.util.ArrayList;
 import java.util.List;
 
-public class UsesFramework {
+public class UsesFramework implements YamlSerializable {
     public List<Integer> ids;
     public String tag;
+
+    @Override
+    public void readItem(YamlReader reader) throws AndrolibException {
+        YamlLine line = reader.getLine();
+        switch (line.getKey()) {
+            case "ids": {
+                ids = new ArrayList<>();
+                reader.readIntList(ids);
+                break;
+            }
+            case "tag": {
+                tag = line.getValue();
+                break;
+            }
+        }
+    }
+
+    @Override
+    public void write(YamlWriter writer) {
+        writer.writeList("ids", ids);
+        writer.writeString("tag", tag);
+    }
 }

brut.apktool/apktool-lib/src/main/java/brut/androlib/apk/VersionInfo.java

@@ -16,7 +16,30 @@
  */
 package brut.androlib.apk;
 
-public class VersionInfo {
+import brut.androlib.exceptions.AndrolibException;
+
+public class VersionInfo implements YamlSerializable {
     public String versionCode;
     public String versionName;
+
+    @Override
+    public void readItem(YamlReader reader) throws AndrolibException {
+        YamlLine line = reader.getLine();
+        switch (line.getKey()) {
+            case "versionCode": {
+                versionCode = line.getValue();
+                break;
+            }
+            case "versionName": {
+                versionName = line.getValue();
+                break;
+            }
+        }
+    }
+
+    @Override
+    public void write(YamlWriter writer) {
+        writer.writeString("versionCode", versionCode);
+        writer.writeString("versionName", versionName);
+    }
 }