src/system/libroot/posix/glibc/include/string.h

   1 #ifndef _LIBC_STRING_H
   2 #define _LIBC_STRING_H
   3
   4 #include_next <string.h>
   5
   6 /* map the internal glibc interface to the public one */
   7 #define __memcpy(to, from, size)        memcpy(to, from, size)
   8 #define __strchrnul(string, character)  strchrnul(string, character)
   9 #define __strnlen                       strnlen
  10 #define __strdup                        strdup
  11 #define __strndup                       strndup
  12 #define __stpcpy                        stpcpy
  13 #define __strtok_r                      strtok_r
  14 #define __strcasecmp                    strcasecmp
  15
  16 static inline char *
  17 __strerror_r(int error, char *buffer, size_t bufferSize)
  18 {
  19         if (strerror_r(error, buffer, bufferSize) != 0)
  20                 strlcpy(buffer, "Unknown Error", bufferSize);
  21
  22         return buffer;
  23 }
  24
  25 static inline void *
  26 __mempcpy(void *to, const void *from, size_t size)
  27 {
  28         memcpy(to, from, size);
  29         return (unsigned char *)to + size;
  30 }
  31
  32 #undef strdupa
  33 #define strdupa(s)                                                           \
  34   (__extension__                                                              \
  35     ({                                                                        \
  36       __const char *__old = (s);                                              \
  37       size_t __len = strlen (__old) + 1;                                      \
  38       char *__new = (char *) __builtin_alloca (__len);                        \
  39       (char *) memcpy (__new, __old, __len);                                  \
  40     }))
  41
  42 /* Alternative version which doesn't pollute glibc's namespace.  */
  43 #undef strndupa
  44 #define strndupa(s, n)                                                        \
  45   (__extension__                                                              \
  46     ({                                                                        \
  47       __const char *__old = (s);                                              \
  48       size_t __len = __strnlen (__old, (n));                                  \
  49       char *__new = (char *) __builtin_alloca (__len + 1);                    \
  50       __new[__len] = '\0';                                                    \
  51       (char *) memcpy (__new, __old, __len);                                  \
  52     }))
  53
  54 #endif  /* _LIBC_STRING_H */