Create 2062 release branch for CEF3.

git-svn-id: https://chromiumembedded.googlecode.com/svn/branches/2062@1783 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

tests/cefclient/bytes_write_handler.cpp

@@ -0,0 +1,94 @@
+// Copyright (c) 2014 The Chromium Embedded Framework Authors. All rights
+// reserved. Use of this source code is governed by a BSD-style license that
+// can be found in the LICENSE file.
+
+#include "cefclient/bytes_write_handler.h"
+
+#include <cstdio>
+#include <cstdlib>
+
+#include "include/wrapper/cef_helpers.h"
+
+BytesWriteHandler::BytesWriteHandler(size_t grow)
+    : grow_(grow),
+      datasize_(grow),
+      offset_(0) {
+  DCHECK_GT(grow, 0U);
+  data_ = malloc(grow);
+  DCHECK(data_ != NULL);
+}
+
+BytesWriteHandler::~BytesWriteHandler() {
+  if (data_)
+    free(data_);
+}
+
+size_t BytesWriteHandler::Write(const void* ptr, size_t size, size_t n) {
+  base::AutoLock lock_scope(lock_);
+  size_t rv;
+  if (offset_ + static_cast<int64>(size * n) >= datasize_ &&
+      Grow(size * n) == 0) {
+    rv = 0;
+  } else {
+    memcpy(reinterpret_cast<char*>(data_) + offset_, ptr, size * n);
+    offset_ += size * n;
+    rv = n;
+  }
+
+  return rv;
+}
+
+int BytesWriteHandler::Seek(int64 offset, int whence) {
+  int rv = -1L;
+  base::AutoLock lock_scope(lock_);
+  switch (whence) {
+  case SEEK_CUR:
+    if (offset_ + offset > datasize_ || offset_ + offset < 0)
+      break;
+    offset_ += offset;
+    rv = 0;
+    break;
+  case SEEK_END: {
+    int64 offset_abs = std::abs(offset);
+    if (offset_abs > datasize_)
+      break;
+    offset_ = datasize_ - offset_abs;
+    rv = 0;
+    break;
+  }
+  case SEEK_SET:
+    if (offset > datasize_ || offset < 0)
+      break;
+    offset_ = offset;
+    rv = 0;
+    break;
+  }
+
+  return rv;
+}
+
+int64 BytesWriteHandler::Tell() {
+  base::AutoLock lock_scope(lock_);
+  return offset_;
+}
+
+int BytesWriteHandler::Flush() {
+  return 0;
+}
+
+size_t BytesWriteHandler::Grow(size_t size) {
+  base::AutoLock lock_scope(lock_);
+  size_t rv;
+  size_t s = (size > grow_ ? size : grow_);
+  void* tmp = realloc(data_, datasize_ + s);
+  DCHECK(tmp != NULL);
+  if (tmp) {
+    data_ = tmp;
+    datasize_ += s;
+    rv = datasize_;
+  } else {
+    rv = 0;
+  }
+
+  return rv;
+}