codecvt.h: New file.

2000-08-15  Benjamin Kosnik  <bkoz@purist.soma.redhat.com>

	* bits/codecvt.h: New file.
	* src/codecvt.cc: New file.
	* bits/std_locale.h: Add include here.
	* src/Makefile.am (headers): Add codecvt.h
	(sources): Add codecvt.cc.
	* src/Makefile.in: Regenerate.
	* bits/locale_facets.h (codecvt): Re-implement. Rename _Codecvt to
	__codecvt_abstract_base in an attempt to point some light this way...
	Move __enc_traits and codecvt bits to codecvt.h.
	* src/locale-inst.cc: Remove codecvt<wchar_t, wchar_t, mbstate_t>
	explicit instantiation. Separate out codecvt instantations, simplify.
	* src/locale.cc: Move codecvt bits to codecvt.cc

From-SVN: r35737

1 files changed, 186 insertions, 0 deletions

diff --git a/libstdc++-v3/src/codecvt.cc b/libstdc++-v3/src/codecvt.cc
new file mode 100644
index 00000000000..c456b00334e
--- /dev/null
+++ b/libstdc++-v3/src/codecvt.cc
@@ -0,0 +1,186 @@
+// Copyright (C) 2000 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO 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, you may use this file as part of a free software
+// library without restriction.  Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself 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 Benjamin Kosnik <bkoz@cygnus.com>
+
+#include <bits/std_locale.h>
+
+namespace std {
+
+  locale::id codecvt<char, char, mbstate_t>::id;
+
+  codecvt<char, char, mbstate_t>::
+  codecvt(size_t __refs)
+  : __codecvt_abstract_base<char, char, mbstate_t>(__refs)
+  { }
+
+  codecvt<char, char, mbstate_t>::
+  ~codecvt() { }
+  
+  codecvt_base::result
+  codecvt<char, char, mbstate_t>::
+  do_out(state_type& /*__state*/, const intern_type* __from, 
+	 const intern_type* __from_end, const intern_type*& __from_next,
+	 extern_type* __to, extern_type* __to_end, 
+	 extern_type*& __to_next) const
+  { 
+    size_t __sizefrom = __from_end - __from;
+    size_t __sizeto = __to_end - __to;
+    size_t __length = __sizefrom <= __sizeto ? __sizefrom : __sizeto;
+    memcpy(__to, __from, __length);
+    __from_next = __from; 
+    __to_next = __to;
+    return noconv;  
+  }
+  
+  codecvt_base::result
+  codecvt<char, char, mbstate_t>::
+  do_unshift(state_type& /*__state*/, extern_type* __to,
+             extern_type* /*__to_limit*/, extern_type*& __to_next) const
+  { 
+    __to_next = __to; 
+    return noconv; 
+  }
+  
+  codecvt_base::result
+  codecvt<char, char, mbstate_t>::
+  do_in(state_type& /*__state*/, const extern_type* __from, 
+	const extern_type* __from_end, const extern_type*& __from_next,
+	intern_type* __to, intern_type* __to_end, 
+	intern_type*& __to_next) const
+  { 
+    size_t __sizefrom = __from_end - __from;
+    size_t __sizeto = __to_end - __to;
+    size_t __length = __sizefrom <= __sizeto ? __sizefrom : __sizeto;
+    memcpy(__to, __from, __length);
+    __from_next = __from; 
+    __to_next = __to;
+    return noconv;  
+  }
+
+  int 
+  codecvt<char, char, mbstate_t>::
+  do_encoding() const throw() { return 1; }
+  
+  bool 
+  codecvt<char, char, mbstate_t>::
+  do_always_noconv() const throw() { return true; }
+  
+  int 
+  codecvt<char, char, mbstate_t>::
+  do_length (const state_type& /*__state*/, const extern_type* __from,
+	     const extern_type* __end, size_t __max) const
+  { return (__max < size_t(__end - __from)) ? __max : __end - __from; }
+  
+  int 
+  codecvt<char, char, mbstate_t>::
+  do_max_length() const throw() { return 1; }
+  
+  codecvt_byname<char, char, mbstate_t>::
+  codecvt_byname(const char* /*__s*/, size_t __refs)
+  : codecvt<char, char, mbstate_t>(__refs) { }
+
+  codecvt_byname<char, char, mbstate_t>::
+  ~codecvt_byname() { }
+
+#ifdef _GLIBCPP_USE_WCHAR_T
+  locale::id codecvt<wchar_t, char, mbstate_t>::id;
+
+  codecvt<wchar_t, char, mbstate_t>::
+  codecvt(size_t __refs)
+  : __codecvt_abstract_base<wchar_t, char, mbstate_t>(__refs) { }
+
+  codecvt<wchar_t, char, mbstate_t>::
+  ~codecvt() { }
+  
+  codecvt_base::result
+  codecvt<wchar_t, char, mbstate_t>::
+  do_out(state_type& /*__state*/, const intern_type* __from, 
+	 const intern_type* __from_end, const intern_type*& __from_next,
+	 extern_type* __to, extern_type* __to_limit,
+	 extern_type*& __to_next) const
+  {
+    for (; __from < __from_end && __to < __to_limit; ++__from, ++__to)
+      *__to = static_cast<char>(*__from);
+    __from_next = __from; __to_next = __to;
+    return __from == __from_end ? ok : partial;
+  }
+  
+  codecvt_base::result
+  codecvt<wchar_t, char, mbstate_t>::
+  do_unshift (state_type& /*__state*/, extern_type* __to,
+              extern_type* /*__to_limit*/, extern_type*& __to_next) const
+  {
+    __to_next = __to;
+    return noconv;
+  }
+  
+  codecvt_base::result
+  codecvt<wchar_t, char, mbstate_t>::
+  do_in(state_type& /*__state*/, const extern_type* __from, 
+	const extern_type* __from_end, const extern_type*& __from_next,
+	intern_type* __to, intern_type* __to_limit,
+	intern_type*& __to_next) const
+  {
+    for (; __from < __from_end && __to < __to_limit; ++__from, ++__to)
+      *__to = static_cast<wchar_t>(*__from);
+    __from_next = __from; 
+    __to_next = __to;
+    return __from == __from_end ? ok : partial;
+  }
+  
+  int 
+  codecvt<wchar_t, char, mbstate_t>::
+  do_encoding() const throw()
+  { return 1; }
+  
+  bool 
+  codecvt<wchar_t, char, mbstate_t>::
+  do_always_noconv() const throw()
+  { return false; }
+  
+  int 
+  codecvt<wchar_t, char, mbstate_t>::
+  do_length(const state_type& /*__state*/, const extern_type* __from,
+	    const extern_type* __end, size_t __max) const
+  { return (__max < size_t(__end - __from)) ? __max : __end - __from; }
+  
+  int 
+  codecvt<wchar_t, char, mbstate_t>::do_max_length() const throw()
+  { return 1; }
+
+  codecvt_byname<wchar_t, char, mbstate_t>::
+  codecvt_byname(const char* /*__s*/, size_t __refs)
+  : codecvt<wchar_t, char, mbstate_t> (__refs) { }
+  
+  codecvt_byname<wchar_t, char, mbstate_t>::
+  ~codecvt_byname() { }
+#endif //  _GLIBCPP_USE_WCHAR_T
+
+} // namespace std
+
+