118 lines
3.3 KiB
C++
118 lines
3.3 KiB
C++
// This may look like C code, but it is really -*- C++ -*-
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// ------------------------------------------------------------------
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// The Goldware Library
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// Copyright (C) 1990-1999 Odinn Sorensen
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// Copyright (C) 1999-2000 Alexander S. Aganichev
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// ------------------------------------------------------------------
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this program; if not, write to the Free
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// Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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// MA 02111-1307, USA
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// ------------------------------------------------------------------
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// $Id$
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// ------------------------------------------------------------------
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// Utility functions.
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// ------------------------------------------------------------------
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#include <cstdlib>
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#include <cstdio>
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#include <clocale>
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#include <gcmpall.h>
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#include <gstrall.h>
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#ifdef __WIN32__
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#include <windows.h>
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#endif
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#ifdef __OS2__
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#define INCL_DOS
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#include <os2.h>
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#endif
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#ifdef __DJGPP__
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#include <dpmi.h>
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#include <sys/farptr.h>
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#endif
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static char charsetbuf[256];
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const char *get_charset(void)
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{
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#if defined(__DJGPP__)
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int segment, selector;
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__dpmi_regs regs;
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strcpy(charsetbuf, "IBMPC");
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if ((segment = __dpmi_allocate_dos_memory(3, &selector)) != -1) {
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regs.h.ah = 0x65;
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regs.h.al = 0x01;
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regs.x.bx = 0xffff;
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regs.x.dx = 0xffff;
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regs.x.cx = 41;
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regs.x.es = segment;
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regs.x.di = 0;
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__dpmi_int(0x21, ®s);
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if (!(regs.x.flags & 1) and (regs.x.cx == 41)) {
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int CCP = _farpeekw(selector, 5);
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sprintf(charsetbuf, "CP%i", CCP);
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}
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__dpmi_free_dos_memory(selector);
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}
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#elif defined(__WIN32__)
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sprintf(charsetbuf, "CP%i", GetOEMCP());
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#elif defined(__OS2__)
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ULONG CCP[8];
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ULONG cb;
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strcpy(charsetbuf, "IBMPC");
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if(DosQueryCp(sizeof (CCP), CCP, &cb) == 0)
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sprintf(charsetbuf, "CP%i", CCP[0]);
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#else
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const char *cp;
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strcpy(charsetbuf, "LATIN-1");
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cp = setlocale(LC_CTYPE, "");
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if((cp != NULL) and ((cp = strchr(cp, '.')) != NULL)) {
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if(strieql(cp, "KOI8R") or strieql(cp, "KOI8"))
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cp = "KOI8-R";
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if(strieql(cp, "KOI8U"))
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cp = "KOI8-U";
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strxcpy(charsetbuf, cp, sizeof(charsetbuf));
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}
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#endif
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return charsetbuf;
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}
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const char *get_dos_charset(const char *cpfrom)
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{
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#if defined(__WIN32__) || defined(__MSDOS__) || defined(__OS2__)
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(void)cpfrom; // These platforms use DOS CP on console, so ignore request
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return "";
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#else
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static const struct _cpmap {
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char *from, *to;
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} cpmap[] = {
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{ "LATIN-1", "CP437" },
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{ "KOI8", "CP866" },
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{ "KOI8-R", "CP866" },
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{ "KOI8-U", "CP1125" },
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{ NULL, NULL }
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};
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int i;
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for(i = 0; cpmap[i].from != NULL; i++) {
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if(strieql(cpfrom, cpmap[i].from))
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return cpmap[i].to;
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}
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return "";
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#endif
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}
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