1 files changed, 57 insertions, 0 deletions
diff --git a/core/java/android/alsa/LineTokenizer.java b/core/java/android/alsa/LineTokenizer.java
new file mode 100644
index 0000000..c138fc5
--- /dev/null
+++ b/core/java/android/alsa/LineTokenizer.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2014 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.alsascan;
+
+/**
+ * @hide
+ * Breaks lines in an ALSA "cards" or "devices" file into tokens.
+ * TODO(pmclean) Look into replacing this with String.split().
+ */
+public class LineTokenizer {
+    public static final int kTokenNotFound = -1;
+
+    private String mDelimiters = "";
+
+    public LineTokenizer(String delimiters) {
+        mDelimiters = delimiters;
+    }
+
+    int nextToken(String line, int startIndex) {
+        int len = line.length();
+        int offset = startIndex;
+        for (; offset < len; offset++) {
+            if (mDelimiters.indexOf(line.charAt(offset)) == -1) {
+                // past a delimiter
+                break;
+            }
+      }
+
+      return offset < len ? offset : kTokenNotFound;
+    }
+
+    int nextDelimiter(String line, int startIndex) {
+        int len = line.length();
+        int offset = startIndex;
+        for (; offset < len; offset++) {
+            if (mDelimiters.indexOf(line.charAt(offset)) != -1) {
+                // past a delimiter
+                break;
+            }
+        }
+
+      return offset < len ? offset : kTokenNotFound;
+    }
+}