1 files changed, 76 insertions, 0 deletions
diff --git a/libs/android-syntax-highlight/src/com/cyanogenmod/filemanager/ash/scanners/NewLineScanner.java b/libs/android-syntax-highlight/src/com/cyanogenmod/filemanager/ash/scanners/NewLineScanner.java
new file mode 100644
index 00000000..5552b8eb
--- /dev/null
+++ b/libs/android-syntax-highlight/src/com/cyanogenmod/filemanager/ash/scanners/NewLineScanner.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2013 The CyanogenMod 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.cyanogenmod.filemanager.ash.scanners;
+
+import java.util.regex.Matcher;
+
+import com.cyanogenmod.filemanager.ash.RegExpUtil;
+
+/**
+ * An scanner to process an input, reporting every text into new lines.
+ */
+public class NewLineScanner extends Scanner {
+
+    private final NewLineScannerListener mListener;
+
+    /**
+     * The listener for the newline scanner
+     */
+    public interface NewLineScannerListener {
+        /**
+         * When a new line is ready
+         *
+         * @param newline The newline detected
+         * @param start The start position of the new line within the input text
+         * @param end The end position of the new line within the input text
+         * @param sep The line separator detected
+         * @return boolean If processor must continue with the next line
+         */
+        boolean onNewLine(CharSequence newline, int start, int end, CharSequence sep);
+    }
+
+    /**
+     * Constructor of <code>Scanner</code>
+     *
+     * @param input The input
+     * @param listener The listener where return every new line
+     */
+    public NewLineScanner(CharSequence input, NewLineScannerListener listener) {
+        super(input);
+        this.mListener = listener;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void scan() {
+        if (this.mInput.length() == 0) return;
+        Matcher m = RegExpUtil.NEWLINE_PATTERN.matcher(this.mInput);
+        int next = 0;
+        while(m.find(next)) {
+            CharSequence line = this.mInput.subSequence(next, m.start());
+            if (!this.mListener.onNewLine(line, next, m.start(), m.group())) {
+                return;
+            }
+            next = m.end();
+        }
+        // The non-matched data
+        CharSequence line = this.mInput.subSequence(next, this.mInput.length());
+        this.mListener.onNewLine(line, next, this.mInput.length(), null);
+    }
+}