| // Copyright 2013 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef BASE_STRINGS_STRINGPRINTF_H_ |
| #define BASE_STRINGS_STRINGPRINTF_H_ |
| |
| #include <stdarg.h> // va_list |
| |
| #include <string> |
| |
| #include "polyfills/base/base_export.h" |
| #include "base/compiler_specific.h" |
| #include "build/build_config.h" |
| |
| namespace gurl_base { |
| |
| // Return a C++ string given printf-like input. |
| [[nodiscard]] BASE_EXPORT std::string StringPrintf(const char* format, ...) |
| PRINTF_FORMAT(1, 2); |
| #if BUILDFLAG(IS_WIN) |
| // Note: Unfortunately compile time checking of the format string for UTF-16 |
| // strings is not supported by any compiler, thus these functions should be used |
| // carefully and sparingly. Also applies to SStringPrintf and StringAppendV |
| // below. |
| [[nodiscard]] BASE_EXPORT std::wstring StringPrintf(const wchar_t* format, ...) |
| WPRINTF_FORMAT(1, 2); |
| [[nodiscard]] BASE_EXPORT std::u16string StringPrintf(const char16_t* format, |
| ...) WPRINTF_FORMAT(1, 2); |
| #endif |
| |
| // Return a C++ string given vprintf-like input. |
| [[nodiscard]] BASE_EXPORT std::string StringPrintV(const char* format, |
| va_list ap) |
| PRINTF_FORMAT(1, 0); |
| |
| // Store result into a supplied string and return it. |
| BASE_EXPORT const std::string& SStringPrintf(std::string* dst, |
| const char* format, |
| ...) PRINTF_FORMAT(2, 3); |
| #if BUILDFLAG(IS_WIN) |
| BASE_EXPORT const std::wstring& SStringPrintf(std::wstring* dst, |
| const wchar_t* format, |
| ...) WPRINTF_FORMAT(2, 3); |
| BASE_EXPORT const std::u16string& SStringPrintf(std::u16string* dst, |
| const char16_t* format, |
| ...) WPRINTF_FORMAT(2, 3); |
| #endif |
| |
| // Append result to a supplied string. |
| BASE_EXPORT void StringAppendF(std::string* dst, const char* format, ...) |
| PRINTF_FORMAT(2, 3); |
| #if BUILDFLAG(IS_WIN) |
| BASE_EXPORT void StringAppendF(std::wstring* dst, const wchar_t* format, ...) |
| WPRINTF_FORMAT(2, 3); |
| BASE_EXPORT void StringAppendF(std::u16string* dst, const char16_t* format, ...) |
| WPRINTF_FORMAT(2, 3); |
| #endif |
| |
| // Lower-level routine that takes a va_list and appends to a specified |
| // string. All other routines are just convenience wrappers around it. |
| BASE_EXPORT void StringAppendV(std::string* dst, const char* format, va_list ap) |
| PRINTF_FORMAT(2, 0); |
| #if BUILDFLAG(IS_WIN) |
| BASE_EXPORT void StringAppendV(std::wstring* dst, |
| const wchar_t* format, |
| va_list ap) WPRINTF_FORMAT(2, 0); |
| BASE_EXPORT void StringAppendV(std::u16string* dst, |
| const char16_t* format, |
| va_list ap) WPRINTF_FORMAT(2, 0); |
| #endif |
| |
| } // namespace base |
| |
| #endif // BASE_STRINGS_STRINGPRINTF_H_ |