1 files changed, 107 insertions, 0 deletions
diff --git a/include/utils/Buffer.h b/include/utils/Buffer.h
new file mode 100644
index 000000000000..8e22b0f2160a
--- /dev/null
+++ b/include/utils/Buffer.h
@@ -0,0 +1,107 @@
+/*
+ * Copyright (C) 2008 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.
+ */
+
+#ifndef __UTILS_BUFFER_H__
+#define __UTILS_BUFFER_H__ 1
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+namespace android {
+
+class Buffer
+{
+private:
+    char *buf;
+    int bufsiz;
+    int used;
+    void ensureCapacity(int len);
+
+    void
+    makeRoomFor(int len)
+    {
+        if (len + used >= bufsiz) {
+            bufsiz = (len + used) * 3/2 + 2;
+            char *blah = new char[bufsiz];
+
+            memcpy(blah, buf, used);
+            delete[] buf;
+            buf = blah;
+        }
+    }
+    
+public:
+    Buffer()
+    {
+        bufsiz = 16;
+        buf = new char[bufsiz];
+        clear();
+    }
+
+    ~Buffer()
+    {
+       delete[] buf;
+    }
+
+    void
+    clear()
+    {
+        buf[0] = '\0';
+        used = 0;
+    }
+
+    int
+    length()
+    {
+        return used;
+    }
+
+    void
+    append(const char c)
+    {
+        makeRoomFor(1);
+        buf[used] = c;
+        used++;
+        buf[used] = '\0';
+    }
+
+    void
+    append(const char *s, int len)
+    {
+        makeRoomFor(len);
+
+        memcpy(buf + used, s, len);
+        used += len;
+        buf[used] = '\0';
+    }
+
+    void
+    append(const char *s)
+    {
+        append(s, strlen(s));
+    }
+
+    char *
+    getBytes()
+    {
+        return buf;
+    }
+};
+
+}; // namespace android
+
+#endif