1 files changed, 66 insertions, 0 deletions
diff --git a/src/com/google/android/droiddriver/util/Strings.java b/src/com/google/android/droiddriver/util/Strings.java
new file mode 100644
index 0000000..ea75238
--- /dev/null
+++ b/src/com/google/android/droiddriver/util/Strings.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2013 DroidDriver committers
+ *
+ * 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.google.android.droiddriver.util;
+
+/**
+ * Static helper methods for manipulating strings.
+ */
+public class Strings {
+  public static String charSequenceToString(CharSequence input) {
+    return input == null ? null : input.toString();
+  }
+
+  public static ToStringHelper toStringHelper(Object self) {
+    return new ToStringHelper(self.getClass().getSimpleName());
+  }
+
+  public static final class ToStringHelper {
+    private final StringBuilder builder;
+    private boolean needsSeparator = false;
+
+    /**
+     * Use {@link #toStringHelper(Object)} to create an instance.
+     */
+    private ToStringHelper(String className) {
+      this.builder = new StringBuilder(32).append(className).append('{');
+    }
+
+    public ToStringHelper addValue(Object value) {
+      maybeAppendSeparator().append(value);
+      return this;
+    }
+
+    public ToStringHelper add(String name, Object value) {
+      maybeAppendSeparator().append(name).append('=').append(value);
+      return this;
+    }
+
+    @Override
+    public String toString() {
+      return builder.append('}').toString();
+    }
+
+    private StringBuilder maybeAppendSeparator() {
+      if (needsSeparator) {
+        return builder.append(", ");
+      } else {
+        needsSeparator = true;
+        return builder;
+      }
+    }
+  }
+}