1 files changed, 93 insertions, 0 deletions
diff --git a/sfntly/data/memory_byte_array.cc b/sfntly/data/memory_byte_array.cc
new file mode 100644
index 0000000..d6c9c48
--- /dev/null
+++ b/sfntly/data/memory_byte_array.cc
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2011 Google Inc. All Rights Reserved.
+ *
+ * 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.
+ */
+
+#include "sfntly/data/memory_byte_array.h"
+
+#include <string.h>
+
+namespace sfntly {
+
+MemoryByteArray::MemoryByteArray(int32_t length)
+    : ByteArray(0, length), b_(NULL), allocated_(true) {
+}
+
+MemoryByteArray::MemoryByteArray(byte_t* b, int32_t filled_length)
+    : ByteArray(filled_length, filled_length), b_(b), allocated_(false) {
+  assert(b);
+}
+
+MemoryByteArray::~MemoryByteArray() {
+  Close();
+}
+
+int32_t MemoryByteArray::CopyTo(OutputStream* os,
+                                int32_t offset,
+                                int32_t length) {
+  assert(os);
+  os->Write(b_, offset, length);
+  return length;
+}
+
+void MemoryByteArray::Init() {
+  if (allocated_ && b_ == NULL) {
+    b_ = new byte_t[Size()];
+    memset(b_, 0, Size());
+  }
+}
+
+void MemoryByteArray::InternalPut(int32_t index, byte_t b) {
+  Init();
+  b_[index] = b;
+}
+
+int32_t MemoryByteArray::InternalPut(int32_t index,
+                                     byte_t* b,
+                                     int32_t offset,
+                                     int32_t length) {
+  assert(b);
+  Init();
+  memcpy(b_ + index, b + offset, length);
+  return length;
+}
+
+byte_t MemoryByteArray::InternalGet(int32_t index) {
+  Init();
+  return b_[index];
+}
+
+int32_t MemoryByteArray::InternalGet(int32_t index,
+                                     byte_t* b,
+                                     int32_t offset,
+                                     int32_t length) {
+  assert(b);
+  Init();
+  memcpy(b + offset, b_ + index, length);
+  return length;
+}
+
+void MemoryByteArray::Close() {
+  if (allocated_ && b_) {
+    delete[] b_;
+  }
+  b_ = NULL;
+}
+
+byte_t* MemoryByteArray::Begin() {
+  Init();
+  return b_;
+}
+
+}  // namespace sfntly