usr/src/lib/libbc/libc/gen/common/wctomb.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1991 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*
  28  * wctomb
  29  */
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"
  32
  33 #if !defined(lint) && defined(SCCSIDS)
  34 static  char *sccsid = "%Z%%M% %I%     %E% SMI";
  35 #endif
  36
  37 #include <sys/types.h>
  38 #include "codeset.h"
  39 #include "mbextern.h"
  40
  41 int
  42 wctomb(s, pwc)
  43         char *s;
  44         wchar_t  pwc;
  45 {
  46         char *handle;           /* handle */
  47         int (*p)();
  48         int ret;
  49
  50         switch (_code_set_info.code_id) {
  51         case CODESET_NONE:
  52                 /*
  53                  * Default code set,
  54                  */
  55                 if (s == NULL)
  56                         return (0);     /* No state dependency */
  57                 else {
  58                         *s = (char) (pwc & 0x00ff);
  59                         return (1);
  60                 }
  61         case CODESET_EUC:
  62                 /*
  63                  * EUC code set
  64                  */
  65                 if (s == NULL)
  66                         return (0);     /* No state dependecy */
  67                 return(_wctomb_euc(s, pwc));
  68                 break;
  69
  70         case CODESET_XCCS:
  71                 /*
  72                  * XCCS code set
  73                  */
  74                 if (s == 0)
  75                         return (0);     /* No state dependecy */
  76                 return(_wctomb_xccs(s, pwc));
  77                 break;
  78
  79         case CODESET_ISO2022:
  80                 /*
  81                  * ISO family
  82                  */
  83                 if (s == 0)
  84                         return (1);     /* State dependant */
  85                 return(_wctomb_iso(s, pwc));
  86                 break;
  87
  88         default:
  89                 /*
  90                  * User defined code set
  91                  */
  92                  handle = _ml_open_library();
  93                  if (handle == (char *)NULL)
  94                         return(ERROR_NO_LIB);   /* No user library */
  95                  p = (int (*)()) dlsym(handle, "_wctomb");
  96                  if (p == (int (*)()) NULL)
  97                         return(ERROR_NO_SYM);
  98                  ret = (*p)(s, pwc);
  99                  return (ret);
 100                  break;
 101         }
 102         /* NOTREACHED */
 103 }