Simplify usage of Jill by API

Change-Id: I3688ca5876a32eb25526d5de8e047691f95d7a4e

3 files changed, 51 insertions, 78 deletions

diff --git a/jill/src/com/android/jill/Jill.java b/jill/src/com/android/jill/Jill.java
index f32dd18..35c5c18 100644
--- a/jill/src/com/android/jill/Jill.java
+++ b/jill/src/com/android/jill/Jill.java
@@ -21,8 +21,10 @@ import com.android.jill.utils.FileUtils;
 
 import java.io.File;
 import java.io.IOException;
+import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Properties;
 import java.util.jar.JarFile;
 
 import javax.annotation.Nonnull;
@@ -33,50 +35,64 @@ import javax.annotation.Nonnull;
 public class Jill {
 
   @Nonnull
-  private final Options options;
+  private static final String PROPERTIES_FILE = "jill.properties";
 
-  @Nonnull
-  private final String version;
-
-  public Jill(@Nonnull Options options, @Nonnull String version) {
-    this.options = options;
-    this.version = version;
-  }
 
-  public void process(@Nonnull File binaryFile) {
+  public static void process(@Nonnull Options options) {
+    File binaryFile = options.getBinaryFile();
+    JavaTransformer jt = new JavaTransformer(getVersion(), options);
     if (binaryFile.isFile()) {
       if (FileUtils.isJavaBinaryFile(binaryFile)) {
-          processJavaBinary(binaryFile);
+        List<File> javaBinaryFiles = new ArrayList<File>();
+        javaBinaryFiles.add(binaryFile);
+        jt.transform(javaBinaryFiles);
       } else if (FileUtils.isJarFile(binaryFile)) {
-          try {
-            processJarFile(new JarFile(binaryFile));
-          } catch (IOException e) {
-            throw new JillException("Fails to create jar file " + binaryFile.getName(), e);
-          }
+        try {
+          jt.transform(new JarFile(binaryFile));
+        } catch (IOException e) {
+          throw new JillException("Fails to create jar file " + binaryFile.getName(), e);
+        }
       } else {
         throw new JillException("Unsupported file type: " + binaryFile.getName());
       }
     } else {
-      processFolder(binaryFile);
+      List<File> javaBinaryFiles = new ArrayList<File>();
+      FileUtils.getJavaBinaryFiles(binaryFile, javaBinaryFiles);
+      jt.transform(javaBinaryFiles);
     }
   }
 
-  private void processJavaBinary(@Nonnull File javaBinaryFile) {
-    assert javaBinaryFile.isFile();
-    List<File> javaBinaryFiles = new ArrayList<File>();
-    javaBinaryFiles.add(javaBinaryFile);
-    new JavaTransformer(version, options).transform(javaBinaryFiles);
-  }
+  @Nonnull
+  public static String getVersion() {
+    String version = "Unknown (problem with " + PROPERTIES_FILE + " resource file)";
 
-  private void processJarFile(@Nonnull JarFile jarFile) {
-    new JavaTransformer(version, options).transform(jarFile);
-  }
+    InputStream is = Main.class.getClassLoader().getResourceAsStream(PROPERTIES_FILE);
+    if (is != null) {
+      Properties prop = new Properties();
+      try {
+        prop.load(is);
+        String rawVersion = prop.getProperty("jill.version");
+        if (rawVersion != null) {
+          version = rawVersion;
 
-  private void processFolder(@Nonnull File folder) {
-    assert folder.isDirectory();
-    List<File> javaBinaryFiles = new ArrayList<File>();
-    FileUtils.getJavaBinaryFiles(folder, javaBinaryFiles);
-    new JavaTransformer(version, options).transform(javaBinaryFiles);
-  }
+          String codeName = prop.getProperty("jill.version.codename");
+          if (codeName != null) {
+            version += " \'" + codeName + '\'';
+          }
 
+          String bid = prop.getProperty("jill.version.buildid", "engineering");
+          String sha = prop.getProperty("jill.version.sha");
+          if (sha != null) {
+            version += " (" + bid + ' ' + sha + ')';
+          } else {
+            version += " (" + bid + ')';
+          }
+        }
+      } catch (IOException e) {
+        // Return default version
+      }
+    }
+
+    return version;
+  }
 }
diff --git a/jill/src/com/android/jill/Main.java b/jill/src/com/android/jill/Main.java
index f514a1f..0c5c91b 100644
--- a/jill/src/com/android/jill/Main.java
+++ b/jill/src/com/android/jill/Main.java
@@ -23,10 +23,8 @@ import org.kohsuke.args4j.CmdLineException;
 import org.kohsuke.args4j.CmdLineParser;
 
 import java.io.IOException;
-import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Properties;
 
 import javax.annotation.Nonnull;
 
@@ -48,11 +46,11 @@ public class Main {
 
       if (options.askForVersion()) {
         System.out.println("Jill");
-        System.out.println("Version: " + getVersion() + '.');
+        System.out.println("Version: " + Jill.getVersion() + '.');
         System.exit(ExitStatus.SUCCESS);
       }
 
-      run(options);
+      Jill.process(options);
 
       System.exit(ExitStatus.SUCCESS);
     } catch (CmdLineException e) {
@@ -112,51 +110,10 @@ public class Main {
     return options;
   }
 
-  public static void run(@Nonnull Options options) {
-    new Jill(options, Main.getVersion()).process(options.getBinaryFile());
-  }
-
   private static void printUsage(@Nonnull CmdLineParser parser) {
     System.err.print("Main: ");
     parser.printSingleLineUsage(System.err);
     System.err.println();
     parser.printUsage(System.err);
   }
-
-  @Nonnull
-  private static final String PROPERTIES_FILE = "jill.properties";
-
-  @Nonnull
-  public static String getVersion() {
-    String version = "Unknown (problem with " + PROPERTIES_FILE + " resource file)";
-
-    InputStream is = Main.class.getClassLoader().getResourceAsStream(PROPERTIES_FILE);
-    if (is != null) {
-      Properties prop = new Properties();
-      try {
-        prop.load(is);
-        String rawVersion = prop.getProperty("jill.version");
-        if (rawVersion != null) {
-          version = rawVersion;
-
-          String codeName = prop.getProperty("jill.version.codename");
-          if (codeName != null) {
-            version += " \'" + codeName + '\'';
-          }
-
-          String bid = prop.getProperty("jill.version.buildid", "engineering");
-          String sha = prop.getProperty("jill.version.sha");
-          if (sha != null) {
-            version += " (" + bid + ' ' + sha + ')';
-          } else {
-            version += " (" + bid + ')';
-          }
-        }
-      } catch (IOException e) {
-        // Return default version
-      }
-    }
-
-    return version;
-  }
 }
diff --git a/jill/tests/com/android/jill/Core.java b/jill/tests/com/android/jill/Core.java
index 2c00fec..f799084 100644
--- a/jill/tests/com/android/jill/Core.java
+++ b/jill/tests/com/android/jill/Core.java
@@ -40,7 +40,7 @@ public class Core {
         + "/out/target/common/obj/JAVA_LIBRARIES/core-libart_intermediates/classes.jar"));
     options.setVerbose(true);
     options.output = AbstractTestTools.createTempFile("jillTest", ".zip");
-    new Jill(options, "0.1").process(options.getBinaryFile());
+    Jill.process(options);
   }
 
   @Test
@@ -50,6 +50,6 @@ public class Core {
         + "/out/target/common/obj/JAVA_LIBRARIES/core-libart_intermediates/classes/"));
     options.setVerbose(true);
     options.output = AbstractTestTools.createTempFile("jillTest", ".zip");
-    new Jill(options, "0.1").process(options.getBinaryFile());
+    Jill.process(options);
   }
 }