1 files changed, 72 insertions, 0 deletions
diff --git a/bundle2installable/src/java/com/android/tools/appbundle/bundle2installable/util/PathUtils.java b/bundle2installable/src/java/com/android/tools/appbundle/bundle2installable/util/PathUtils.java
new file mode 100644
index 0000000..0169525
--- /dev/null
+++ b/bundle2installable/src/java/com/android/tools/appbundle/bundle2installable/util/PathUtils.java
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2017 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 com.android.tools.appbundle.bundle2installable.util;
+
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import javax.annotation.Nullable;
+
+/**
+ * Various utilities for path processing.
+ */
+public class PathUtils {
+
+  private static final int TOP_LEVEL = 0;
+  private static final int VARIANT_LEVEL = 1;
+  private static final int LEVEL_IN_VARIANT = 2;
+  private static final int LEVEL_IN_DEFAULT = 1;
+
+  public static String stripExtension(String filename) {
+    return filename.substring(0, filename.lastIndexOf('.'));
+  }
+
+  public static String makeSplitName(String module, String split) {
+    return module + "-" + split + ".zip";
+  }
+
+  public static String stripDirectories(String fullPath) {
+    Path p = Paths.get(fullPath);
+    return p.getName(p.getNameCount() - 1).toString();
+  }
+
+  public static boolean isInsideTopDirectory(Path p, String directoryName) {
+    return p.getNameCount() > 1 && p.getName(TOP_LEVEL).toString().equals(directoryName);
+  }
+
+  @Nullable
+  public static String resolveVariant(Path p) {
+    if (p.getNameCount() > 2) { // inside the variant directory
+      return p.getName(VARIANT_LEVEL).toString();
+    }
+    return null;
+  }
+
+  public static String getFilePathWithoutVariant(String entryPath) {
+    return removeTopLevelPath(entryPath, LEVEL_IN_VARIANT);
+  }
+
+  public static String getFilePathWithoutTopLevel(String entryPath) {
+    return removeTopLevelPath(entryPath, LEVEL_IN_DEFAULT);
+  }
+
+  public static String removeTopLevelPath(String entryPath, int numLevels) {
+    Path p = Paths.get(entryPath);
+    System.out.println(entryPath);
+    return p.subpath(numLevels, p.getNameCount()).toString();
+  }
+
+}