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Diffstat (limited to 'contrib/libstdc++/std/straits.h')
-rw-r--r-- | contrib/libstdc++/std/straits.h | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/contrib/libstdc++/std/straits.h b/contrib/libstdc++/std/straits.h new file mode 100644 index 0000000..c80e7ab --- /dev/null +++ b/contrib/libstdc++/std/straits.h @@ -0,0 +1,161 @@ +// Character traits template for the -*- C++ -*- string classes. +// Copyright (C) 1994 Free Software Foundation + +// This file is part of the GNU ANSI C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 2, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License +// along with this library; see the file COPYING. If not, write to the Free +// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +// As a special exception, if you link this library with files +// compiled with a GNU compiler to produce an executable, this does not cause +// the resulting executable to be covered by the GNU General Public License. +// This exception does not however invalidate any other reasons why +// the executable file might be covered by the GNU General Public License. + +// Written by Jason Merrill based upon the specification by Takanori Adachi +// in ANSI X3J16/94-0013R2. + +#ifndef __STRING_CHAR_TRAITS__ +#define __STRING_CHAR_TRAITS__ + +#ifdef __GNUG__ +// For string_char_traits <char> +#pragma interface "std/straits.h" +#endif + +#include <cstddef> + +extern "C++" { +template <class charT> +struct string_char_traits { + typedef charT char_type; // for users to acquire the basic character type + + // constraints + + static void assign (char_type& c1, const char_type& c2) + { c1 = c2; } + static bool eq (const char_type& c1, const char_type& c2) + { return (c1 == c2); } + static bool ne (const char_type& c1, const char_type& c2) + { return !(c1 == 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 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) + { + size_t i; + for (i = 0; i < n; ++i) + if (ne (s1[i], s2[i])) + return lt (s1[i], s2[i]) ? -1 : 1; + + return 0; + } + + static size_t length (const char_type* s) + { + size_t l = 0; + while (ne (*s++, eos ())) + ++l; + return l; + } + + static char_type* copy (char_type* s1, const char_type* s2, size_t n) + { + for (; n--; ) + assign (s1[n], s2[n]); + return s1; + } + + static char_type* move (char_type* s1, const char_type* s2, size_t n) + { + char_type a[n]; + size_t i; + for (i = 0; i < n; ++i) + assign (a[i], s2[i]); + for (i = 0; i < n; ++i) + assign (s1[i], a[i]); + return s1; + } + + static char_type* set (char_type* s1, const char_type& c, size_t n) + { + for (; n--; ) + assign (s1[n], c); + return s1; + } +}; + +class istream; +class ostream; +#include <cctype> +#include <cstring> + +struct string_char_traits <char> { + typedef char char_type; + + static void assign (char_type& c1, const char_type& c2) + { c1 = c2; } + static bool eq (const char_type & c1, const char_type& c2) + { return (c1 == c2); } + static bool ne (const char_type& c1, const char_type& c2) + { return (c1 != c2); } + static bool lt (const char_type& c1, const char_type& c2) + { return (c1 < c2); } + static char_type eos () { return 0; } + 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 memcmp (s1, s2, n); } + static size_t length (const char_type* s) + { return strlen (s); } + static char_type* copy (char_type* s1, const char_type* s2, size_t n) + { return (char_type*) memcpy (s1, s2, n); } + static char_type* move (char_type* s1, const char_type* s2, size_t n) + { return (char_type*) memmove (s1, s2, n); } + static char_type* set (char_type* s1, const char_type& c, size_t n) + { return (char_type*) memset (s1, c, n); } +}; + +#if 0 +#include <cwctype> +struct string_char_traits <wchar_t> { + typedef wchar_t char_type; + + static void assign (char_type& c1, const char_type& c2) + { c1 = c2; } + static bool eq (const char_type & c1, const char_type& c2) + { return (c1 == c2); } + static bool ne (const char_type& c1, const char_type& c2) + { return (c1 != c2); } + static bool lt (const char_type& c1, const char_type& c2) + { return (c1 < c2); } + static char_type eos () { return 0; } + 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 wmemcmp (s1, s2, n); } + static size_t length (const char_type* s) + { 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* set (char_type* s1, const char_type& c, size_t n) + { return wmemset (s1, c, n); } +}; +#endif +} // extern "C++" +#endif |