libstdc++-v3/include/c_std/std_cstring.h

   1 // -*- C++ -*- forwarding header.
   2
   3 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
   4 // Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 2, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING.  If not, write to the Free
  19 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  20 // USA.
  21
  22 // As a special exception, you may use this file as part of a free software
  23 // library without restriction.  Specifically, if other files instantiate
  24 // templates or use macros or inline functions from this file, or you compile
  25 // this file and link it with other files to produce an executable, this
  26 // file does not by itself cause the resulting executable to be covered by
  27 // the GNU General Public License.  This exception does not however
  28 // invalidate any other reasons why the executable file might be covered by
  29 // the GNU General Public License.
  30
  31 //
  32 // ISO C++ 14882: 20.4.6  C library
  33 //
  34
  35 /** @file cstring
  36  *  This is a Standard C++ Library file.  You should @c #include this file
  37  *  in your programs, rather than any of the "*.h" implementation files.
  38  *
  39  *  This is the C++ version of the Standard C Library header @c string.h,
  40  *  and its contents are (mostly) the same as that header, but are all
  41  *  contained in the namespace @c std.
  42  */
  43
  44 #ifndef _CSTRING
  45 #define _CSTRING 1
  46
  47 #pragma GCC system_header
  48
  49 #include <cstddef>
  50
  51 #include <string.h>
  52
  53 // Get rid of those macros defined in <string.h> in lieu of real functions.
  54 #undef memcpy
  55 #undef memmove
  56 #undef strcpy
  57 #undef strncpy
  58 #undef strcat
  59 #undef strncat
  60 #undef memcmp
  61 #undef strcmp
  62 #undef strcoll
  63 #undef strncmp
  64 #undef strxfrm
  65 #undef memchr
  66 #undef strchr
  67 #undef strcspn
  68 #undef strpbrk
  69 #undef strrchr
  70 #undef strspn
  71 #undef strstr
  72 #undef strtok
  73 #undef memset
  74 #undef strerror
  75 #undef strlen
  76
  77 namespace std
  78 {
  79   using ::memcpy;
  80   using ::memmove;
  81   using ::strcpy;
  82   using ::strncpy;
  83   using ::strcat;
  84   using ::strncat;
  85   using ::memcmp;
  86   using ::strcmp;
  87   using ::strcoll;
  88   using ::strncmp;
  89   using ::strxfrm;
  90   using ::strcspn;
  91   using ::strspn;
  92   using ::strtok;
  93   using ::memset;
  94   using ::strerror;
  95   using ::strlen;
  96
  97   using ::memchr;
  98
  99   inline void*
 100   memchr(void* __p, int __c, size_t __n)
 101   { return memchr(const_cast<const void*>(__p), __c, __n); }
 102
 103   using ::strchr;
 104
 105   inline char*
 106   strchr(char* __s1, int __n)
 107   { return __builtin_strchr(const_cast<const char*>(__s1), __n); }
 108
 109   using ::strpbrk;
 110
 111   inline char*
 112   strpbrk(char* __s1, const char* __s2)
 113   { return __builtin_strpbrk(const_cast<const char*>(__s1), __s2); }
 114
 115   using ::strrchr;
 116
 117   inline char*
 118   strrchr(char* __s1, int __n)
 119   { return __builtin_strrchr(const_cast<const char*>(__s1), __n); }
 120
 121   using ::strstr;
 122
 123   inline char*
 124   strstr(char* __s1, const char* __s2)
 125   { return __builtin_strstr(const_cast<const char*>(__s1), __s2); }
 126 }
 127
 128 #endif