Repo created

TMessagesProj/jni/voip/webrtc/base/strings/utf_string_conversions.h

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+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef BASE_STRINGS_UTF_STRING_CONVERSIONS_H_
+#define BASE_STRINGS_UTF_STRING_CONVERSIONS_H_
+
+#include <stddef.h>
+
+#include <string>
+
+#include "base/base_export.h"
+#include "base/strings/string16.h"
+#include "base/strings/string_piece.h"
+
+namespace base {
+
+// These convert between UTF-8, -16, and -32 strings. They are potentially slow,
+// so avoid unnecessary conversions. The low-level versions return a boolean
+// indicating whether the conversion was 100% valid. In this case, it will still
+// do the best it can and put the result in the output buffer. The versions that
+// return strings ignore this error and just return the best conversion
+// possible.
+BASE_EXPORT bool WideToUTF8(const wchar_t* src, size_t src_len,
+                            std::string* output);
+BASE_EXPORT std::string WideToUTF8(WStringPiece wide) WARN_UNUSED_RESULT;
+BASE_EXPORT bool UTF8ToWide(const char* src, size_t src_len,
+                            std::wstring* output);
+BASE_EXPORT std::wstring UTF8ToWide(StringPiece utf8) WARN_UNUSED_RESULT;
+
+BASE_EXPORT bool WideToUTF16(const wchar_t* src, size_t src_len,
+                             string16* output);
+BASE_EXPORT string16 WideToUTF16(WStringPiece wide) WARN_UNUSED_RESULT;
+BASE_EXPORT bool UTF16ToWide(const char16* src, size_t src_len,
+                             std::wstring* output);
+BASE_EXPORT std::wstring UTF16ToWide(StringPiece16 utf16) WARN_UNUSED_RESULT;
+
+BASE_EXPORT bool UTF8ToUTF16(const char* src, size_t src_len, string16* output);
+BASE_EXPORT string16 UTF8ToUTF16(StringPiece utf8) WARN_UNUSED_RESULT;
+BASE_EXPORT bool UTF16ToUTF8(const char16* src, size_t src_len,
+                             std::string* output);
+BASE_EXPORT std::string UTF16ToUTF8(StringPiece16 utf16) WARN_UNUSED_RESULT;
+
+// This converts an ASCII string, typically a hardcoded constant, to a UTF16
+// string.
+BASE_EXPORT string16 ASCIIToUTF16(StringPiece ascii) WARN_UNUSED_RESULT;
+
+// Converts to 7-bit ASCII by truncating. The result must be known to be ASCII
+// beforehand.
+BASE_EXPORT std::string UTF16ToASCII(StringPiece16 utf16) WARN_UNUSED_RESULT;
+
+}  // namespace base
+
+#endif  // BASE_STRINGS_UTF_STRING_CONVERSIONS_H_