struct string_char_traits {
typedef charT char_type; // for users to acquire the basic character type
- static const char_type __nullstr[1];
-
// constraints
static void assign (char_type& c1, const char_type& c2)
static bool lt (const char_type& c1, const char_type& c2)
{ return (c1 < c2); }
static char_type eos () { return char_type(); } // the null character
- static char_type* empty() { return __nullstr; }
static bool is_del(char_type a) { return 0; }
// characteristic function for delimiters of charT
-
+
// speed-up functions
static int compare (const char_type* s1, const char_type* s2, size_t n)
return 0;
}
-
+
static size_t length (const char_type* s)
{
size_t l = 0;
static bool lt (const char_type& c1, const char_type& c2)
{ return (c1 < c2); }
static char_type eos () { return 0; }
- static char_type* empty() { return ""; }
static bool is_del(char_type a) { return isspace(a); }
static int compare (const char_type* s1, const char_type* s2, size_t n)
{ return (char_type*) memset (s1, c, n); }
};
+#if 0
#include <cwctype>
-#include <cwchar>
struct string_char_traits <wchar_t> {
typedef wchar_t char_type;
static bool lt (const char_type& c1, const char_type& c2)
{ return (c1 < c2); }
static char_type eos () { return 0; }
- static char_type* empty() { return L""; }
static bool is_del(char_type a) { return iswspace(a); }
static int compare (const char_type* s1, const char_type* s2, size_t n)
{ return wcslen (s); }
static char_type* copy (char_type* s1, const char_type* s2, size_t n)
{ return wmemcpy (s1, s2, n); }
- static char_type* move (char_type* s1, const char_type* s2, size_t n)
- { return (char_type*) wmemmove (s1, s2, n); }
static char_type* set (char_type* s1, const char_type& c, size_t n)
{ return wmemset (s1, c, n); }
};
+#endif
} // extern "C++"
#endif