diff options
Diffstat (limited to 'chromium/base/strings/string_util_win.h')
| -rw-r--r-- | chromium/base/strings/string_util_win.h | 157 |
1 files changed, 156 insertions, 1 deletions
diff --git a/chromium/base/strings/string_util_win.h b/chromium/base/strings/string_util_win.h index 7f260bfc8b4..c39133d923c 100644 --- a/chromium/base/strings/string_util_win.h +++ b/chromium/base/strings/string_util_win.h @@ -11,7 +11,14 @@ #include <string.h> #include <wchar.h> -#include "base/logging.h" +#include <string> +#include <vector> + +#include "base/check.h" +#include "base/containers/span.h" +#include "base/strings/string16.h" +#include "base/strings/string_piece.h" +#include "base/strings/string_util.h" namespace base { @@ -39,6 +46,154 @@ inline int vswprintf(wchar_t* buffer, size_t size, return length; } +// Utility functions to access the underlying string buffer as a wide char +// pointer. +// +// Note: These functions violate strict aliasing when char16 and wchar_t are +// unrelated types. We thus pass -fno-strict-aliasing to the compiler on +// non-Windows platforms [1], and rely on it being off in Clang's CL mode [2]. +// +// [1] https://crrev.com/b9a0976622/build/config/compiler/BUILD.gn#244 +// [2] +// https://github.com/llvm/llvm-project/blob/1e28a66/clang/lib/Driver/ToolChains/Clang.cpp#L3949 +inline wchar_t* as_writable_wcstr(char16* str) { + return reinterpret_cast<wchar_t*>(str); +} + +inline wchar_t* as_writable_wcstr(string16& str) { + return reinterpret_cast<wchar_t*>(data(str)); +} + +inline const wchar_t* as_wcstr(const char16* str) { + return reinterpret_cast<const wchar_t*>(str); +} + +inline const wchar_t* as_wcstr(StringPiece16 str) { + return reinterpret_cast<const wchar_t*>(str.data()); +} + +// Utility functions to access the underlying string buffer as a char16 pointer. +inline char16* as_writable_u16cstr(wchar_t* str) { + return reinterpret_cast<char16*>(str); +} + +inline char16* as_writable_u16cstr(std::wstring& str) { + return reinterpret_cast<char16*>(data(str)); +} + +inline const char16* as_u16cstr(const wchar_t* str) { + return reinterpret_cast<const char16*>(str); +} + +inline const char16* as_u16cstr(WStringPiece str) { + return reinterpret_cast<const char16*>(str.data()); +} + +// Utility functions to convert between base::WStringPiece and +// base::StringPiece16. +inline WStringPiece AsWStringPiece(StringPiece16 str) { + return WStringPiece(as_wcstr(str.data()), str.size()); +} + +inline StringPiece16 AsStringPiece16(WStringPiece str) { + return StringPiece16(as_u16cstr(str.data()), str.size()); +} + +inline std::wstring AsWString(StringPiece16 str) { + return std::wstring(as_wcstr(str.data()), str.size()); +} + +inline string16 AsString16(WStringPiece str) { + return string16(as_u16cstr(str.data()), str.size()); +} + +// The following section contains overloads of the cross-platform APIs for +// std::wstring and base::WStringPiece. These are only enabled if std::wstring +// and base::string16 are distinct types, as otherwise this would result in an +// ODR violation. +// TODO(crbug.com/911896): Remove those guards once base::string16 is +// std::u16string. +#if defined(BASE_STRING16_IS_STD_U16STRING) +BASE_EXPORT bool IsStringASCII(WStringPiece str); + +BASE_EXPORT std::wstring ToLowerASCII(WStringPiece str); + +BASE_EXPORT std::wstring ToUpperASCII(WStringPiece str); + +BASE_EXPORT int CompareCaseInsensitiveASCII(WStringPiece a, WStringPiece b); + +BASE_EXPORT bool EqualsCaseInsensitiveASCII(WStringPiece a, WStringPiece b); + +BASE_EXPORT bool RemoveChars(WStringPiece input, + WStringPiece remove_chars, + std::wstring* output); + +BASE_EXPORT bool ReplaceChars(WStringPiece input, + WStringPiece replace_chars, + WStringPiece replace_with, + std::wstring* output); + +BASE_EXPORT bool TrimString(WStringPiece input, + WStringPiece trim_chars, + std::string* output); + +BASE_EXPORT WStringPiece TrimString(WStringPiece input, + WStringPiece trim_chars, + TrimPositions positions); + +BASE_EXPORT TrimPositions TrimWhitespace(WStringPiece input, + TrimPositions positions, + std::wstring* output); + +BASE_EXPORT WStringPiece TrimWhitespace(WStringPiece input, + TrimPositions positions); + +BASE_EXPORT std::wstring CollapseWhitespace( + WStringPiece text, + bool trim_sequences_with_line_breaks); + +BASE_EXPORT bool ContainsOnlyChars(WStringPiece input, WStringPiece characters); + +BASE_EXPORT bool LowerCaseEqualsASCII(WStringPiece str, + StringPiece lowecase_ascii); + +BASE_EXPORT bool EqualsASCII(StringPiece16 str, StringPiece ascii); + +BASE_EXPORT bool StartsWith(WStringPiece str, + WStringPiece search_for, + CompareCase case_sensitivity); + +BASE_EXPORT bool EndsWith(WStringPiece str, + WStringPiece search_for, + CompareCase case_sensitivity); + +BASE_EXPORT void ReplaceFirstSubstringAfterOffset(std::wstring* str, + size_t start_offset, + WStringPiece find_this, + WStringPiece replace_with); + +BASE_EXPORT void ReplaceSubstringsAfterOffset(std::wstring* str, + size_t start_offset, + WStringPiece find_this, + WStringPiece replace_with); + +BASE_EXPORT wchar_t* WriteInto(std::wstring* str, size_t length_with_null); + +BASE_EXPORT std::wstring JoinString(span<const std::wstring> parts, + WStringPiece separator); + +BASE_EXPORT std::wstring JoinString(span<const WStringPiece> parts, + WStringPiece separator); + +BASE_EXPORT std::wstring JoinString(std::initializer_list<WStringPiece> parts, + WStringPiece separator); + +BASE_EXPORT std::wstring ReplaceStringPlaceholders( + WStringPiece format_string, + const std::vector<string16>& subst, + std::vector<size_t>* offsets); +#endif + } // namespace base #endif // BASE_STRINGS_STRING_UTIL_WIN_H_ |