--- /dev/null
+// 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 "tests/cefclient/browser/bytes_write_handler.h"
+
+#include <cstdio>
+#include <cstdlib>
+
+#include "include/wrapper/cef_helpers.h"
+
+namespace client {
+
+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;
+}
+
+} // namespace client