1 files changed, 82 insertions, 0 deletions
diff --git a/theme-compiler/src/com/vaadin/sass/util/FastByteArrayInputStream.java b/theme-compiler/src/com/vaadin/sass/util/FastByteArrayInputStream.java
new file mode 100644
index 0000000000..1b3d0ea0f7
--- /dev/null
+++ b/theme-compiler/src/com/vaadin/sass/util/FastByteArrayInputStream.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2011 Vaadin Ltd.
+ * 
+ * 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.vaadin.sass.util;
+
+import java.io.InputStream;
+
+/**
+ * ByteArrayInputStream implementation that does not synchronize methods.
+ */
+public class FastByteArrayInputStream extends InputStream {
+    /**
+     * Our byte buffer
+     */
+    protected byte[] buf = null;
+
+    /**
+     * Number of bytes that we can read from the buffer
+     */
+    protected int count = 0;
+
+    /**
+     * Number of bytes that have been read from the buffer
+     */
+    protected int pos = 0;
+
+    public FastByteArrayInputStream(byte[] buf, int count) {
+        this.buf = buf;
+        this.count = count;
+    }
+
+    @Override
+    public final int available() {
+        return count - pos;
+    }
+
+    @Override
+    public final int read() {
+        return (pos < count) ? (buf[pos++] & 0xff) : -1;
+    }
+
+    @Override
+    public final int read(byte[] b, int off, int len) {
+        if (pos >= count) {
+            return -1;
+        }
+
+        if ((pos + len) > count) {
+            len = (count - pos);
+        }
+
+        System.arraycopy(buf, pos, b, off, len);
+        pos += len;
+        return len;
+    }
+
+    @Override
+    public final long skip(long n) {
+        if ((pos + n) > count) {
+            n = count - pos;
+        }
+        if (n < 0) {
+            return 0;
+        }
+        pos += n;
+        return n;
+    }
+
+}