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- /**************************************************************************
- *
- * codecvte.h - Example of user defined codecvt facet.
- * See Class Reference Section
- *
- ***************************************************************************
- *
- * (c) Copyright 1994, 1998 Rogue Wave Software, Inc.
- * ALL RIGHTS RESERVED
- *
- * The software and information contained herein are proprietary to, and
- * comprise valuable trade secrets of, Rogue Wave Software, Inc., which
- * intends to preserve as trade secrets such software and information.
- * This software is furnished 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 software and information or any other copies thereof may
- * not be provided or otherwise made available to any other person.
- *
- * Notwithstanding any other lease or license that may pertain to, or
- * accompany the delivery of, this computer software and information, the
- * rights of the Government regarding its use, reproduction and disclosure
- * are as set forth in Section 52.227-19 of the FARS Computer
- * Software-Restricted Rights clause.
- *
- * 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.
- * Contractor/Manufacturer is Rogue Wave Software, Inc.,
- * P.O. Box 2328, Corvallis, Oregon 97339.
- *
- * This computer software and information is distributed with "restricted
- * rights." Use, duplication or disclosure is subject to restrictions as
- * set forth in NASA FAR SUP 18-52.227-79 (April 1985) "Commercial
- * Computer Software-Restricted Rights (April 1985)." If the Clause at
- * 18-52.227-74 "Rights in Data General" is specified in the contract,
- * then the "Alternate III" clause applies.
- *
- **************************************************************************/
-
- #include <locale>
- #include <strstream>
- #include <functional>
- #include <algorithm>
-
- #ifndef _RWSTD_NO_NAMESPACE
- using std::codecvt;
- using std::min;
- #ifdef _RWSTD_NO_MBSTATE_T
- using std::mbstate_t;
- #endif
- #endif
-
- #define RWSTD_TABLE_SIZE 59
- //
- // This facet performs a conversion from Latin Alphabet No. 1
- // (ISO 8859-1) to U.S. ASCII code page 437. Some conversions are one
- // way (from ISO to ASCII, but not back again) because this ASCII
- // code page has no equivilent to the ISO character.
- //
- class ex_codecvt : public codecvt<char,char,mbstate_t>
- {
- private:
- static char table_[RWSTD_TABLE_SIZE][3];
-
- protected:
- virtual result do_in(mbstate_t&,
- const char* from, const char* from_end, const char*& from_next,
- char* to, char* to_limit, char*& to_next) const
- {
- bool match;
- int i = min(to_limit-to,from_end-from);
- from_next = from;
- to_next = to;
- for (int j =0; j < i; j++)
- {
- match = false;
- for (int k = 0; k < RWSTD_TABLE_SIZE; k++)
- {
- if (*from_next >= table_[k][0] &&
- *from_next <= table_[k][1])
- {
- *to_next = table_[k][2];
- match = true;
- break;
- }
- }
- if (!match)
- *to_next = *from_next;
- from_next++;
- to_next++;
- }
- return ok;
- }
-
- virtual result do_out(mbstate_t&,
- const char* from, const char* from_end, const char*& from_next,
- char* to, char* to_limit, char*& to_next) const
- {
- bool match;
- int i = min(to_limit-to,from_end-from);
- from_next = from;
- to_next = to;
- for (int j =0; j < i; j++)
- {
- match = false;
- for (int k = 0; k < RWSTD_TABLE_SIZE; k++)
- {
- if (*from_next == table_[k][2] &&
- table_[k][0] == table_[k][1])
- {
- *to_next = table_[k][1];
- match = true;
- break;
- }
- }
- if (!match)
- *to_next = *from_next;
- from_next++;
- to_next++;
- }
- return ok;
- }
-
- virtual bool do_always_noconv() const _RWSTD_THROW_SPEC_NULL
- { return false; }
-
- virtual int do_encoding() const _RWSTD_THROW_SPEC_NULL
- { return 1; }
-
- virtual int do_length (const mbstate_t&, const char* from,
- const char* end, size_t max) const
- { return min((size_t)(end - from),max); }
-
- virtual int do_max_length() const _RWSTD_THROW_SPEC_NULL
- { return INT_MAX; }
-
- };
-
- char ex_codecvt::table_[RWSTD_TABLE_SIZE][3] =
- { 0xa2, 0xa2, 0x9b,
- 0xa3, 0xa3, 0x9c,
- 0xa5, 0xa5, 0x9d,
- 0xa7, 0xa7, 0x15,
- 0xa8, 0xa8, 0x22,
- 0xaa, 0xaa, 0xa6,
- 0xab, 0xab, 0xae,
- 0xb5, 0xb5, 0xe6,
- 0xb6, 0xb6, 0x14,
- 0xb7, 0xb7, 0xfa,
- 0xba, 0xba, 0xa7,
- 0xbb, 0xbb, 0xaf,
- 0xbc, 0xbc, 0xac,
- 0xbd, 0xbd, 0xab,
- 0xbf, 0xbf, 0xa8,
- 0xc0, 0xc3, 0x41,
- 0xc4, 0xc4, 0x8e,
- 0xc5, 0xc5, 0x41,
- 0xc6, 0xc6, 0x92,
- 0xc7, 0xc7, 0x80,
- 0xc8, 0xc8, 0x45,
- 0xc9, 0xc9, 0x90,
- 0xca, 0xcb, 0x45,
- 0xcc, 0xcf, 0x49,
- 0xd1, 0xd1, 0xa5,
- 0xd2, 0xd5, 0x4f,
- 0xd6, 0xd6, 0x99,
- 0xd8, 0xd8, 0xed,
- 0xd9, 0xdb, 0x55,
- 0xdc, 0xdc, 0x9a,
- 0xdd, 0xdd, 0x59,
- 0xdf, 0xdf, 0xe1,
- 0xe0, 0xe0, 0x85,
- 0xe1, 0xe1, 0xa0,
- 0xe2, 0xe2, 0x83,
- 0xe3, 0xe3, 0x61,
- 0xe4, 0xe4, 0x84,
- 0xe5, 0xe5, 0x86,
- 0xe6, 0xe6, 0x91,
- 0xe7, 0xe7, 0x87,
- 0xe8, 0xe8, 0x8a,
- 0xe9, 0xe9, 0x82,
- 0xea, 0xea, 0x88,
- 0xeb, 0xeb, 0x89,
- 0xec, 0xec, 0x8d,
- 0xed, 0xed, 0xa1,
- 0xee, 0xee, 0x8c,
- 0xef, 0xef, 0x8b,
- 0xf1, 0xf1, 0xa4,
- 0xf2, 0xf2, 0x95,
- 0xf3, 0xf3, 0xa2,
- 0xf4, 0xf4, 0x93,
- 0xf5, 0xf5, 0x6f,
- 0xf6, 0xf6, 0x94,
- 0xf9, 0xf9, 0x97,
- 0xfa, 0xfa, 0xa3,
- 0xfb, 0xfb, 0x96,
- 0xfc, 0xfc, 0x81,
- 0xff, 0xff, 0x98 };
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