third-party/unittest/googletest/include/gtest/internal/gtest-string.h

   1 // Copyright 2005, Google Inc.
   2 // All rights reserved.
   3 //
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   5 // modification, are permitted provided that the following conditions are
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  10 //     * Redistributions in binary form must reproduce the above
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  28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29
  30 // The Google C++ Testing and Mocking Framework (Google Test)
  31 //
  32 // This header file declares the String class and functions used internally by
  33 // Google Test.  They are subject to change without notice. They should not used
  34 // by code external to Google Test.
  35 //
  36 // This header file is #included by gtest-internal.h.
  37 // It should not be #included by other files.
  38
  39 // GOOGLETEST_CM0001 DO NOT DELETE
  40
  41 // IWYU pragma: private, include "gtest/gtest.h"
  42 // IWYU pragma: friend gtest/.*
  43 // IWYU pragma: friend gmock/.*
  44
  45 #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_STRING_H_
  46 #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_STRING_H_
  47
  48 #ifdef __BORLANDC__
  49 // string.h is not guaranteed to provide strcpy on C++ Builder.
  50 # include <mem.h>
  51 #endif
  52
  53 #include <string.h>
  54 #include <string>
  55
  56 #include "gtest/internal/gtest-port.h"
  57
  58 namespace testing {
  59 namespace internal {
  60
  61 // String - an abstract class holding static string utilities.
  62 class GTEST_API_ String {
  63  public:
  64   // Static utility methods
  65
  66   // Clones a 0-terminated C string, allocating memory using new.  The
  67   // caller is responsible for deleting the return value using
  68   // delete[].  Returns the cloned string, or NULL if the input is
  69   // NULL.
  70   //
  71   // This is different from strdup() in string.h, which allocates
  72   // memory using malloc().
  73   static const char* CloneCString(const char* c_str);
  74
  75 #if GTEST_OS_WINDOWS_MOBILE
  76   // Windows CE does not have the 'ANSI' versions of Win32 APIs. To be
  77   // able to pass strings to Win32 APIs on CE we need to convert them
  78   // to 'Unicode', UTF-16.
  79
  80   // Creates a UTF-16 wide string from the given ANSI string, allocating
  81   // memory using new. The caller is responsible for deleting the return
  82   // value using delete[]. Returns the wide string, or NULL if the
  83   // input is NULL.
  84   //
  85   // The wide string is created using the ANSI codepage (CP_ACP) to
  86   // match the behaviour of the ANSI versions of Win32 calls and the
  87   // C runtime.
  88   static LPCWSTR AnsiToUtf16(const char* c_str);
  89
  90   // Creates an ANSI string from the given wide string, allocating
  91   // memory using new. The caller is responsible for deleting the return
  92   // value using delete[]. Returns the ANSI string, or NULL if the
  93   // input is NULL.
  94   //
  95   // The returned string is created using the ANSI codepage (CP_ACP) to
  96   // match the behaviour of the ANSI versions of Win32 calls and the
  97   // C runtime.
  98   static const char* Utf16ToAnsi(LPCWSTR utf16_str);
  99 #endif
 100
 101   // Compares two C strings.  Returns true if and only if they have the same
 102   // content.
 103   //
 104   // Unlike strcmp(), this function can handle NULL argument(s).  A
 105   // NULL C string is considered different to any non-NULL C string,
 106   // including the empty string.
 107   static bool CStringEquals(const char* lhs, const char* rhs);
 108
 109   // Converts a wide C string to a String using the UTF-8 encoding.
 110   // NULL will be converted to "(null)".  If an error occurred during
 111   // the conversion, "(failed to convert from wide string)" is
 112   // returned.
 113   static std::string ShowWideCString(const wchar_t* wide_c_str);
 114
 115   // Compares two wide C strings.  Returns true if and only if they have the
 116   // same content.
 117   //
 118   // Unlike wcscmp(), this function can handle NULL argument(s).  A
 119   // NULL C string is considered different to any non-NULL C string,
 120   // including the empty string.
 121   static bool WideCStringEquals(const wchar_t* lhs, const wchar_t* rhs);
 122
 123   // Compares two C strings, ignoring case.  Returns true if and only if
 124   // they have the same content.
 125   //
 126   // Unlike strcasecmp(), this function can handle NULL argument(s).
 127   // A NULL C string is considered different to any non-NULL C string,
 128   // including the empty string.
 129   static bool CaseInsensitiveCStringEquals(const char* lhs,
 130                                            const char* rhs);
 131
 132   // Compares two wide C strings, ignoring case.  Returns true if and only if
 133   // they have the same content.
 134   //
 135   // Unlike wcscasecmp(), this function can handle NULL argument(s).
 136   // A NULL C string is considered different to any non-NULL wide C string,
 137   // including the empty string.
 138   // NB: The implementations on different platforms slightly differ.
 139   // On windows, this method uses _wcsicmp which compares according to LC_CTYPE
 140   // environment variable. On GNU platform this method uses wcscasecmp
 141   // which compares according to LC_CTYPE category of the current locale.
 142   // On MacOS X, it uses towlower, which also uses LC_CTYPE category of the
 143   // current locale.
 144   static bool CaseInsensitiveWideCStringEquals(const wchar_t* lhs,
 145                                                const wchar_t* rhs);
 146
 147   // Returns true if and only if the given string ends with the given suffix,
 148   // ignoring case. Any string is considered to end with an empty suffix.
 149   static bool EndsWithCaseInsensitive(
 150       const std::string& str, const std::string& suffix);
 151
 152   // Formats an int value as "%02d".
 153   static std::string FormatIntWidth2(int value);  // "%02d" for width == 2
 154
 155   // Formats an int value as "%X".
 156   static std::string FormatHexInt(int value);
 157
 158   // Formats an int value as "%X".
 159   static std::string FormatHexUInt32(UInt32 value);
 160
 161   // Formats a byte as "%02X".
 162   static std::string FormatByte(unsigned char value);
 163
 164  private:
 165   String();  // Not meant to be instantiated.
 166 };  // class String
 167
 168 // Gets the content of the stringstream's buffer as an std::string.  Each '\0'
 169 // character in the buffer is replaced with "\\0".
 170 GTEST_API_ std::string StringStreamToString(::std::stringstream* stream);
 171
 172 }  // namespace internal
 173 }  // namespace testing
 174
 175 #endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_STRING_H_