blob: 23c55cb89359765f1d0c4b5abd6296a24ba24a87 [file] [log] [blame]
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#if defined(WEBRTC_WIN)
#include <malloc.h>
#include <wchar.h>
#include <windows.h>
#endif // WEBRTC_WIN
#if defined(WEBRTC_POSIX)
#include <stdlib.h>
#include <strings.h>
#endif // WEBRTC_POSIX
#include <string>
namespace rtc {
const size_t SIZE_UNKNOWN = static_cast<size_t>(-1);
// Safe version of strncpy that always nul-terminate.
size_t strcpyn(char* buffer,
size_t buflen,
const char* source,
size_t srclen = SIZE_UNKNOWN);
// UTF helpers (Windows only)
#if defined(WEBRTC_WIN)
inline std::wstring ToUtf16(const char* utf8, size_t len) {
if (len == 0)
return std::wstring();
int len16 = ::MultiByteToWideChar(CP_UTF8, 0, utf8, static_cast<int>(len),
nullptr, 0);
std::wstring ws(len16, 0);
::MultiByteToWideChar(CP_UTF8, 0, utf8, static_cast<int>(len), &*ws.begin(),
return ws;
inline std::wstring ToUtf16(const std::string& str) {
return ToUtf16(, str.length());
inline std::string ToUtf8(const wchar_t* wide, size_t len) {
if (len == 0)
return std::string();
int len8 = ::WideCharToMultiByte(CP_UTF8, 0, wide, static_cast<int>(len),
nullptr, 0, nullptr, nullptr);
std::string ns(len8, 0);
::WideCharToMultiByte(CP_UTF8, 0, wide, static_cast<int>(len), &*ns.begin(),
len8, nullptr, nullptr);
return ns;
inline std::string ToUtf8(const wchar_t* wide) {
return ToUtf8(wide, wcslen(wide));
inline std::string ToUtf8(const std::wstring& wstr) {
return ToUtf8(, wstr.length());
#endif // WEBRTC_WIN
// Remove leading and trailing whitespaces.
std::string string_trim(const std::string& s);
// TODO(jonasolsson): replace with absl::Hex when that becomes available.
std::string ToHex(const int i);
} // namespace rtc