1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/win/scoped_hstring.h"
#include <winstring.h>
#include <ostream>
#include <string>
#include <string_view>
#include "base/check.h"
#include "base/notreached.h"
#include "base/numerics/safe_conversions.h"
#include "base/process/memory.h"
#include "base/strings/utf_string_conversions.h"
namespace base {
namespace internal {
// static
void ScopedHStringTraits::Free(HSTRING hstr) {
::WindowsDeleteString(hstr);
}
} // namespace internal
namespace win {
ScopedHString::ScopedHString(HSTRING hstr) : ScopedGeneric(hstr) {}
// static
ScopedHString ScopedHString::Create(std::wstring_view str) {
HSTRING hstr;
HRESULT hr = ::WindowsCreateString(str.data(),
checked_cast<UINT32>(str.length()), &hstr);
if (SUCCEEDED(hr)) {
return ScopedHString(hstr);
}
if (hr == E_OUTOFMEMORY) {
// This size is an approximation. The actual size likely includes
// sizeof(HSTRING_HEADER) as well.
base::TerminateBecauseOutOfMemory((str.length() + 1) * sizeof(wchar_t));
}
// This should not happen at runtime. Otherwise we could silently pass nullptr
// or an empty string to downstream code.
NOTREACHED() << "Failed to create HSTRING: " << std::hex << hr;
}
// static
ScopedHString ScopedHString::Create(std::string_view str) {
return Create(UTF8ToWide(str));
}
// static
std::wstring_view ScopedHString::Get() const {
UINT32 length = 0;
const wchar_t* buffer = ::WindowsGetStringRawBuffer(get(), &length);
return std::wstring_view(buffer, length);
}
std::string ScopedHString::GetAsUTF8() const {
return WideToUTF8(Get());
}
} // namespace win
} // namespace base
|
