libstdc++/cstring

   1 // The -*- C++ -*- null-terminated string header.
   2 // This file is part of the GNU ANSI C++ Library.
   3
   4 #ifndef __CSTRING__
   5 #define __CSTRING__
   6
   7 #include <string.h>
   8
   9 #if 0 // Let's not bother with this just yet.
  10 #include <cstddef>
  11
  12 #ifdef __GNUG__
  13 #pragma interface "cstring"
  14 #endif
  15
  16 // The ANSI C prototypes for these functions have a const argument type and
  17 // non-const return type, so we can't use them.
  18
  19 extern "C++" {
  20 extern inline const char *
  21 _G_strchr (const char *s, int c)
  22 {
  23   return strchr (s, c);
  24 }
  25
  26 extern inline char *
  27 _G_strchr (char *s, int c)
  28 {
  29   return const_cast<char *> (strchr (s, c));
  30 }
  31
  32 extern inline const char *
  33 _G_strpbrk (const char *s1, const char *s2)
  34 {
  35   return strpbrk (s1, s2);
  36 }
  37
  38 extern inline char *
  39 _G_strpbrk (char *s1, const char *s2)
  40 {
  41   return const_cast<char *> (strpbrk (s1, s2));
  42 }
  43
  44 extern inline const char *
  45 _G_strrchr (const char *s, int c)
  46 {
  47   return strrchr (s, c);
  48 }
  49
  50 extern inline char *
  51 _G_strrchr (char *s, int c)
  52 {
  53   return const_cast<char *> (strrchr (s, c));
  54 }
  55
  56 extern inline const char *
  57 _G_strstr (const char *s1, const char *s2)
  58 {
  59   return strstr (s1, s2);
  60 }
  61
  62 extern inline char *
  63 _G_strstr (char *s1, const char *s2)
  64 {
  65   return const_cast<char *> (strstr (s1, s2));
  66 }
  67
  68 extern inline const void *
  69 _G_memchr (const void *s, int c, size_t n)
  70 {
  71   return memchr (s, c, n);
  72 }
  73
  74 extern inline void *
  75 _G_memchr (void *s, int c, size_t n)
  76 {
  77   return const_cast<void *> (memchr (s, c, n));
  78 }
  79 } // extern "C++"
  80
  81 // Lose any vendor macros for these functions.
  82 #undef strchr
  83 #undef strpbrk
  84 #undef strrchr
  85 #undef strstr
  86 #undef memchr
  87
  88 // Ewww, namespace pollution.  Anyone have a better idea?
  89 #define strchr  _G_strchr
  90 #define strpbrk _G_strpbrk
  91 #define strrchr _G_strrchr
  92 #define strstr  _G_strstr
  93 #define memchr  _G_memchr
  94 #endif // 0
  95
  96 #endif // !defined (__CSTRING__)