include/string.h

   1 #ifndef _STRING_H
   2
   3 #include <sys/types.h>
   4
   5 extern void *__memccpy (void *__dest, __const void *__src,
   6                           int __c, size_t __n);
   7
   8 extern size_t __strnlen (__const char *__string, size_t __maxlen)
   9      __attribute_pure__;
  10
  11 extern char *__strsep (char **__stringp, __const char *__delim);
  12
  13 extern int __strverscmp (__const char *__s1, __const char *__s2)
  14      __attribute_pure__;
  15
  16 extern int __strncasecmp (__const char *__s1, __const char *__s2,
  17                           size_t __n)
  18      __attribute_pure__;
  19
  20 extern int __strcasecmp (__const char *__s1, __const char *__s2)
  21      __attribute_pure__;
  22
  23 extern char *__strcasestr (__const char *__haystack, __const char *__needle)
  24      __attribute_pure__;
  25
  26 extern char *__strdup (__const char *__string)
  27      __attribute_malloc__;
  28 extern char *__strndup (__const char *__string, size_t __n)
  29      __attribute_malloc__;
  30
  31 extern void *__rawmemchr (__const void *__s, int __c)
  32      __attribute_pure__;
  33
  34 extern char *__strchrnul (__const char *__s, int __c)
  35      __attribute_pure__;
  36
  37 extern void *__memrchr (__const void *__s, int __c, size_t __n)
  38      __attribute_pure__;
  39
  40 extern void *__memchr (__const void *__s, int __c, size_t __n)
  41      __attribute_pure__;
  42
  43 extern int __ffs (int __i) __attribute__ ((const));
  44
  45 extern char *__strerror_r (int __errnum, char *__buf, size_t __buflen);
  46
  47 /* Now the real definitions.  We do this here since some of the functions
  48    above are defined as macros in the headers.  */
  49 #include <string/string.h>
  50
  51 /* Alternative version which doesn't pollute glibc's namespace.  */
  52 #undef strndupa
  53 #define strndupa(s, n)                                                        \
  54   (__extension__                                                              \
  55     ({                                                                        \
  56       __const char *__old = (s);                                              \
  57       size_t __len = __strnlen (__old, (n));                                  \
  58       char *__new = (char *) __builtin_alloca (__len + 1);                    \
  59       __new[__len] = '\0';                                                    \
  60       (char *) memcpy (__new, __old, __len);                                  \
  61     }))
  62 #endif