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- #ifndef __COLLATE_H
- #define __COLLATE_H
- #pragma option push -b -a8 -pc -Vx- -Ve- -w-inl -w-aus -w-sig
- // -*- C++ -*-
- /***************************************************************************
- *
- * collate - Declarations for the Standard Library character collation facet
- *
- ***************************************************************************
- *
- * Copyright (c) 1994-1999 Rogue Wave Software, Inc. All Rights Reserved.
- *
- * This computer software is owned by Rogue Wave Software, Inc. and is
- * protected by U.S. copyright laws and other laws and by international
- * treaties. This computer software is furnished by Rogue Wave Software,
- * Inc. pursuant to a written license agreement and may be used, copied,
- * transmitted, and stored only in accordance with the terms of such
- * license and with the inclusion of the above copyright notice. This
- * computer software or any other copies thereof may not be provided or
- * otherwise made available to any other person.
- *
- * U.S. Government Restricted Rights. This computer software is provided
- * with Restricted Rights. Use, duplication, or disclosure by the
- * Government is subject to restrictions as set forth in subparagraph (c)
- * (1) (ii) of The Rights in Technical Data and Computer Software clause
- * at DFARS 252.227-7013 or subparagraphs (c) (1) and (2) of the
- * Commercial Computer Software รป Restricted Rights at 48 CFR 52.227-19,
- * as applicable. Manufacturer is Rogue Wave Software, Inc., 5500
- * Flatiron Parkway, Boulder, Colorado 80301 USA.
- *
- **************************************************************************/
-
- #ifndef __STD_COLLATE__
- #define __STD_COLLATE__
-
- #ifndef __STD_RWLOCALE__
- #include <rw/rwlocale>
- #endif
-
- #ifndef _RWSTD_NO_NAMESPACE
- namespace __rwstd {
- #endif
-
- // ------------------------------------------------------
- // Implementation class template -- collate_table<charT>.
- // ------------------------------------------------------
-
- // Data structure that drives the collate<charT> process. It contains a
- // binary tree of nodes, each of which defines the collation treatment to be
- // applied to a range of characters.
-
- template <class charT>
- class _RWSTDExportTemplate collate_table {
- public:
- struct node {
- node *left; // Node for charT values that are too small (resp.
- node *right; // too large) for this node
- const charT *table; // Translate table or NULL
- charT minC,maxC; // Range of charT-s covered by this node
- charT offset; // Amount to add to charT if table is NULL
- };
-
- long length; // Length of memory block containing all the nodes
- node root; // Root node of table
- };
-
- // -----------------------------------------------------
- // Implementation class template -- collate_data<charT>.
- // -----------------------------------------------------
-
- // collate<charT> derives from this (via rwstd::collate_impl) to get its
- // private data members.
-
- template <class charT>
- class _RWSTDExportTemplate collate_data
- {
- public:
- typedef collate_table<charT> table;
- typedef _TYPENAME table::node node;
-
- const table *__table;
-
- collate_data (const table &t): __table(&t) { }
- charT __coll_order (charT) const;
- };
-
- template <class charT>
- inline charT collate_data<charT>::__coll_order (charT c) const
- {
- const node *t=&__table->root;
- while (t)
- if (c < t->minC)
- t=t->left;
- else if (c > t->maxC)
- t=t->right;
- else {
- if (t->table)
- c=t->table[size_t(c-t->minC)];
- else
- c+=t->offset;
- break;
- }
-
- return c;
- }
-
- // -----------------------------------------------------
- // Implementation class template -- collate_impl<charT>.
- // -----------------------------------------------------
-
- // Facet collate<charT> derives from this to get the part of its behavior that
- // is specialized for char and wchar_t.
-
- template <class charT>
- class _RWSTDExportTemplate collate_impl :
- public collate_data<charT>
- {
- static collate_table<charT> __default_table;
- public:
- collate_impl (void):
- collate_data<charT>(__default_table) { }
- };
-
- // Specialization for char.
- _RWSTD_TEMPLATE
- class _RWSTDExport collate_impl<char>:
- public collate_data<char>
- {
- static collate_table<char> _RWSTDExportStatic __default_table;
- public:
- collate_impl (void):
- collate_data<char>(__default_table) { }
- };
-
- // Specialization for wchar_t.
- #ifndef _RWSTD_NO_WIDE_CHAR
- _RWSTD_TEMPLATE
- class _RWSTDExport collate_impl<wchar_t>:
- public collate_data<wchar_t>
- {
- static collate_table<wchar_t> _RWSTDExportStatic __default_table;
-
- public:
- collate_impl (void):
- collate_data<wchar_t>(__default_table) { }
- };
- #endif
-
- #ifndef _RWSTD_NO_NAMESPACE
- } namespace std {
- #endif
-
- // -----------------------------------------------------
- // Standard character collation facet -- collate<charT>.
- // -----------------------------------------------------
-
- template <class charT>
- class _RWSTDExportTemplate collate: public locale::facet,
- public __RWSTD::collate_impl<charT>
- {
- public:
- typedef charT char_type;
- typedef basic_string<charT,char_traits<charT>,allocator<charT> > string_type;
-
- _EXPLICIT collate (size_t refs=0):
- locale::facet(refs,locale::__rw_collate_category)
- { }
-
- int compare (const charT* low1, const charT* high1,
- const charT* low2, const charT* high2) const
- { return do_compare(low1, high1, low2, high2); }
-
- string_type transform (const charT* low, const charT* high) const
- { return do_transform(low, high); }
-
- long hash (const charT* low, const charT* high) const
- { return do_hash(low, high); }
-
- static locale::id id;
-
- // Implementation:
- enum { __facet_cat = locale::__rw_collate_category, __ok_implicit = 1 };
-
- protected:
- virtual ~collate();
-
- virtual int do_compare (const charT* low1, const charT* high1,
- const charT* low2, const charT* high2) const;
- virtual string_type do_transform (const charT* low, const charT* high) const;
- virtual long do_hash (const charT* low, const charT* high) const;
-
- private:
- #ifdef _RWSTD_NO_MEMBER_TEMPLATES
- locale::id &__get_id (void) const { return id; }
- #endif
- };
-
- // ------------------------------------------------------
- // Standard facet specialization -- collate_byname<char>.
- // ------------------------------------------------------
-
- template <class charT>
- class collate_byname;
-
- _RWSTD_TEMPLATE
- class _RWSTDExport collate_byname<char>: public collate<char> {
- public:
- _EXPLICIT collate_byname (const char*, size_t refs=0);
- protected:
- virtual ~collate_byname ();
-
- // Virtual member functions, override functions in collate<char>.
- virtual int do_compare (const char* low1, const char* high1,
- const char* low2, const char* high2) const;
- virtual string do_transform (const char* low, const char* high) const;
-
- // Virtual member functions inherited from collate<char>:
- // virtual long do_hash (const char* low, const char* high) const;
-
- private:
- // Implementation.
- string __collate_name;
- };
-
- // ------------------------------------------------
- // Standard derived facet -- collate_byname<charT>.
- // ------------------------------------------------
-
- template <class charT>
- class collate_byname: public collate<charT> {
- public:
- typedef basic_string<charT,char_traits<charT>,
- allocator<charT> > string_type;
-
- _EXPLICIT collate_byname (const char*, size_t refs=0);
-
- protected:
- virtual ~collate_byname();
-
- // Virtual member functions overridden from collate<charT>.
- virtual int do_compare (const charT* low1, const charT* high1,
- const charT* low2, const charT* high2) const;
- virtual string_type do_transform (const charT* low, const charT* high) const;
-
- // Virtual member functions inherited from collate<charT>:
- // virtual long do_hash (const charT* low, const charT* high) const;
-
- private:
- // Implementation.
- string_type __collate_name;
- };
-
- #ifndef _RWSTD_NO_NAMESPACE
- } namespace __rwstd {
- #endif
-
- #ifndef _RWSTD_NO_FUNC_PARTIAL_SPEC
- template <class charT>
- inline _RW_STD::collate<charT>* create_named_facet
- (_RW_STD::collate<charT>*,const char *name,size_t refs)
- { return new _RW_STD::collate_byname<charT>(name,refs); }
- #else
-
- inline _RW_STD::collate<char>* create_named_facet
- (_RW_STD::collate<char>*,const char *name,size_t refs)
- { return new _RW_STD::collate_byname<char>(name,refs); }
- #ifndef _RWSTD_NO_WIDE_CHAR
-
- inline _RW_STD::collate<wchar_t>* create_named_facet
- (_RW_STD::collate<wchar_t>*,const char *name,size_t refs)
- { return new _RW_STD::collate_byname<wchar_t>(name,refs); }
- #endif
- #endif
-
- #ifndef _RWSTD_NO_NAMESPACE
- }
- #endif
-
- #ifdef _RWSTD_COMPILE_INSTANTIATE
- #include <rw/collate.cc>
- #endif
-
- #endif // __STD_COLLATE__
-
- #pragma option pop
- #endif /* __COLLATE_H */
-