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// Copyright 2005, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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//     * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//     * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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//     * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Authors: wan@google.com (Zhanyong Wan), eefacm@gmail.com (Sean Mcafee)
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//
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// The Google C++ Testing Framework (Google Test)
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//
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// This header file declares the String class and functions used internally by
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// Google Test.  They are subject to change without notice. They should not used
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// by code external to Google Test.
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//
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// This header file is #included by <gtest/internal/gtest-internal.h>.
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// It should not be #included by other files.
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#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_STRING_H_
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#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_STRING_H_
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#ifdef __BORLANDC__
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// string.h is not guaranteed to provide strcpy on C++ Builder.
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# include <mem.h>
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#endif
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#include <string.h>
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#include <string>
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#include "gtest/internal/gtest-port.h"
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namespace testing {
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namespace internal {
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// String - an abstract class holding static string utilities.
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class GTEST_API_ String {
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 public:
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  // Static utility methods
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  // Clones a 0-terminated C string, allocating memory using new.  The
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  // caller is responsible for deleting the return value using
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  // delete[].  Returns the cloned string, or NULL if the input is
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  // NULL.
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  //
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  // This is different from strdup() in string.h, which allocates
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  // memory using malloc().
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  static const char* CloneCString(const char* c_str);
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#if GTEST_OS_WINDOWS_MOBILE
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  // Windows CE does not have the 'ANSI' versions of Win32 APIs. To be
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  // able to pass strings to Win32 APIs on CE we need to convert them
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  // to 'Unicode', UTF-16.
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  // Creates a UTF-16 wide string from the given ANSI string, allocating
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  // memory using new. The caller is responsible for deleting the return
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  // value using delete[]. Returns the wide string, or NULL if the
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  // input is NULL.
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  //
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  // The wide string is created using the ANSI codepage (CP_ACP) to
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  // match the behaviour of the ANSI versions of Win32 calls and the
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  // C runtime.
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  static LPCWSTR AnsiToUtf16(const char* c_str);
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  // Creates an ANSI string from the given wide string, allocating
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  // memory using new. The caller is responsible for deleting the return
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  // value using delete[]. Returns the ANSI string, or NULL if the
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  // input is NULL.
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  //
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  // The returned string is created using the ANSI codepage (CP_ACP) to
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  // match the behaviour of the ANSI versions of Win32 calls and the
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  // C runtime.
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  static const char* Utf16ToAnsi(LPCWSTR utf16_str);
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#endif
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  // Compares two C strings.  Returns true iff they have the same content.
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  //
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  // Unlike strcmp(), this function can handle NULL argument(s).  A
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  // NULL C string is considered different to any non-NULL C string,
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  // including the empty string.
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  static bool CStringEquals(const char* lhs, const char* rhs);
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  // Converts a wide C string to a String using the UTF-8 encoding.
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  // NULL will be converted to "(null)".  If an error occurred during
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  // the conversion, "(failed to convert from wide string)" is
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  // returned.
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  static std::string ShowWideCString(const wchar_t* wide_c_str);
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  // Compares two wide C strings.  Returns true iff they have the same
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  // content.
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  //
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  // Unlike wcscmp(), this function can handle NULL argument(s).  A
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  // NULL C string is considered different to any non-NULL C string,
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  // including the empty string.
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  static bool WideCStringEquals(const wchar_t* lhs, const wchar_t* rhs);
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  // Compares two C strings, ignoring case.  Returns true iff they
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  // have the same content.
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  //
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  // Unlike strcasecmp(), this function can handle NULL argument(s).
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  // A NULL C string is considered different to any non-NULL C string,
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  // including the empty string.
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  static bool CaseInsensitiveCStringEquals(const char* lhs,
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                                           const char* rhs);
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  // Compares two wide C strings, ignoring case.  Returns true iff they
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  // have the same content.
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  //
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  // Unlike wcscasecmp(), this function can handle NULL argument(s).
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  // A NULL C string is considered different to any non-NULL wide C string,
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  // including the empty string.
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  // NB: The implementations on different platforms slightly differ.
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  // On windows, this method uses _wcsicmp which compares according to LC_CTYPE
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  // environment variable. On GNU platform this method uses wcscasecmp
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  // which compares according to LC_CTYPE category of the current locale.
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  // On MacOS X, it uses towlower, which also uses LC_CTYPE category of the
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  // current locale.
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  static bool CaseInsensitiveWideCStringEquals(const wchar_t* lhs,
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                                               const wchar_t* rhs);
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  // Returns true iff the given string ends with the given suffix, ignoring
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  // case. Any string is considered to end with an empty suffix.
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  static bool EndsWithCaseInsensitive(
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      const std::string& str, const std::string& suffix);
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  // Formats an int value as "%02d".
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  static std::string FormatIntWidth2(int value);  // "%02d" for width == 2
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  // Formats an int value as "%X".
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  static std::string FormatHexInt(int value);
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  // Formats a byte as "%02X".
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  static std::string FormatByte(unsigned char value);
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 private:
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  String();  // Not meant to be instantiated.
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};  // class String
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// Gets the content of the stringstream's buffer as an std::string.  Each '\0'
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// character in the buffer is replaced with "\\0".
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GTEST_API_ std::string StringStreamToString(::std::stringstream* stream);
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}  // namespace internal
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}  // namespace testing
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#endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_STRING_H_

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