maruel@chromium.org
af2e22a685
Preliminary work to enforce new PRESUBMIT.py rules: - <=80 cols - no trailing whitespaces - svn:eol-style=LF git-svn-id: svn://svn.chromium.org/chrome/trunk/src@10791 0039d316-1c4b-4281-b951-d872f2087c98
67 linhas
1.4 KiB
C++
67 linhas
1.4 KiB
C++
// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/scoped_bstr_win.h"
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#include "base/logging.h"
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ScopedBstr::ScopedBstr(const wchar_t* non_bstr)
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: bstr_(SysAllocString(non_bstr)) {
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}
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ScopedBstr::~ScopedBstr() {
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COMPILE_ASSERT(sizeof(ScopedBstr) == sizeof(BSTR), ScopedBstrSize);
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SysFreeString(bstr_);
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}
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void ScopedBstr::Reset(BSTR bstr) {
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if (bstr != bstr_) {
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// if |bstr_| is NULL, SysFreeString does nothing.
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SysFreeString(bstr_);
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bstr_ = bstr;
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}
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}
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BSTR ScopedBstr::Release() {
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BSTR bstr = bstr_;
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bstr_ = NULL;
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return bstr;
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}
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void ScopedBstr::Swap(ScopedBstr& bstr2) {
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BSTR tmp = bstr_;
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bstr_ = bstr2.bstr_;
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bstr2.bstr_ = tmp;
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}
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BSTR* ScopedBstr::Receive() {
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DCHECK(bstr_ == NULL) << "BSTR leak.";
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return &bstr_;
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}
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BSTR ScopedBstr::Allocate(const wchar_t* wide_str) {
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Reset(SysAllocString(wide_str));
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return bstr_;
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}
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BSTR ScopedBstr::AllocateBytes(int bytes) {
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Reset(SysAllocStringByteLen(NULL, bytes));
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return bstr_;
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}
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void ScopedBstr::SetByteLen(uint32 bytes) {
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DCHECK(bstr_ != NULL) << "attempting to modify a NULL bstr";
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uint32* data = reinterpret_cast<uint32*>(bstr_);
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data[-1] = bytes;
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}
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uint32 ScopedBstr::Length() const {
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return SysStringLen(bstr_);
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}
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uint32 ScopedBstr::ByteLength() const {
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return SysStringByteLen(bstr_);
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}
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