1 files changed, 113 insertions, 0 deletions
diff --git a/java/src/com/android/inputmethod/research/MotionEventReader.java b/java/src/com/android/inputmethod/research/MotionEventReader.java
new file mode 100644
index 000000000..36e75be1c
--- /dev/null
+++ b/java/src/com/android/inputmethod/research/MotionEventReader.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2013 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.inputmethod.research;
+
+import android.util.JsonReader;
+import android.util.Log;
+import android.view.MotionEvent;
+
+import com.android.inputmethod.latin.define.ProductionFlag;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+
+public class MotionEventReader {
+    private static final String TAG = MotionEventReader.class.getSimpleName();
+    private static final boolean DEBUG = false && ProductionFlag.IS_EXPERIMENTAL_DEBUG;
+
+    public ReplayData readMotionEventData(final File file) {
+        final ReplayData replayData = new ReplayData();
+        try {
+            // Read file
+            final JsonReader jsonReader = new JsonReader(new BufferedReader(new InputStreamReader(
+                    new FileInputStream(file))));
+            jsonReader.beginArray();
+            while (jsonReader.hasNext()) {
+                readLogStatement(jsonReader, replayData);
+            }
+            jsonReader.endArray();
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return replayData;
+    }
+
+    static class ReplayData {
+        final ArrayList<Integer> mActions = new ArrayList<Integer>();
+        final ArrayList<Integer> mXCoords = new ArrayList<Integer>();
+        final ArrayList<Integer> mYCoords = new ArrayList<Integer>();
+        final ArrayList<Long> mTimes = new ArrayList<Long>();
+    }
+
+    private void readLogStatement(final JsonReader jsonReader, final ReplayData replayData)
+            throws IOException {
+        String logStatementType = null;
+        Integer actionType = null;
+        Integer x = null;
+        Integer y = null;
+        Long time = null;
+        boolean loggingRelated = false;
+
+        jsonReader.beginObject();
+        while (jsonReader.hasNext()) {
+            final String key = jsonReader.nextName();
+            if (key.equals("_ty")) {
+                logStatementType = jsonReader.nextString();
+            } else if (key.equals("_ut")) {
+                time = jsonReader.nextLong();
+            } else if (key.equals("x")) {
+                x = jsonReader.nextInt();
+            } else if (key.equals("y")) {
+                y = jsonReader.nextInt();
+            } else if (key.equals("action")) {
+                final String s = jsonReader.nextString();
+                if (s.equals("UP")) {
+                    actionType = MotionEvent.ACTION_UP;
+                } else if (s.equals("DOWN")) {
+                    actionType = MotionEvent.ACTION_DOWN;
+                } else if (s.equals("MOVE")) {
+                    actionType = MotionEvent.ACTION_MOVE;
+                }
+            } else if (key.equals("loggingRelated")) {
+                loggingRelated = jsonReader.nextBoolean();
+            } else {
+                if (DEBUG) {
+                    Log.w(TAG, "Unknown JSON key in LogStatement: " + key);
+                }
+                jsonReader.skipValue();
+            }
+        }
+        jsonReader.endObject();
+
+        if (logStatementType != null && time != null && x != null && y != null && actionType != null
+                && logStatementType.equals("MainKeyboardViewProcessMotionEvent")
+                && !loggingRelated) {
+            replayData.mActions.add(actionType);
+            replayData.mXCoords.add(x);
+            replayData.mYCoords.add(y);
+            replayData.mTimes.add(time);
+        }
+    }
+
+}