- added implementation of stdc++ for haiku

- this differs slightly from the one that lives in buildtools/gcc as it
  has been "ported" to the newer libio that haiku uses as part of its own
  libroot


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9906 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/cpp/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