form/fld_dup.c

   1 /****************************************************************************
   2  * Copyright (c) 1998 Free Software Foundation, Inc.                        *
   3  *                                                                          *
   4  * Permission is hereby granted, free of charge, to any person obtaining a  *
   5  * copy of this software and associated documentation files (the            *
   6  * "Software"), to deal in the Software without restriction, including      *
   7  * without limitation the rights to use, copy, modify, merge, publish,      *
   8  * distribute, distribute with modifications, sublicense, and/or sell       *
   9  * copies of the Software, and to permit persons to whom the Software is    *
  10  * furnished to do so, subject to the following conditions:                 *
  11  *                                                                          *
  12  * The above copyright notice and this permission notice shall be included  *
  13  * in all copies or substantial portions of the Software.                   *
  14  *                                                                          *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
  18  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
  21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
  22  *                                                                          *
  23  * Except as contained in this notice, the name(s) of the above copyright   *
  24  * holders shall not be used in advertising or otherwise to promote the     *
  25  * sale, use or other dealings in this Software without prior written       *
  26  * authorization.                                                           *
  27  ****************************************************************************/
  28
  29 /****************************************************************************
  30  *   Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997            *
  31  ****************************************************************************/
  32
  33 #include "form.priv.h"
  34
  35 MODULE_ID("$Id: fld_dup.c,v 1.4 1999/05/16 17:17:08 juergen Exp $")
  36
  37 /*---------------------------------------------------------------------------
  38 |   Facility      :  libnform
  39 |   Function      :  FIELD *dup_field(FIELD *field, int frow, int fcol)
  40 |
  41 |   Description   :  Duplicates the field at the specified position. All
  42 |                    field attributes and the buffers are copied.
  43 |                    If an error occurs, errno is set to
  44 |
  45 |                    E_BAD_ARGUMENT - invalid argument
  46 |                    E_SYSTEM_ERROR - system error
  47 |
  48 |   Return Values :  Pointer to the new field or NULL if failure
  49 +--------------------------------------------------------------------------*/
  50 FIELD *dup_field(FIELD * field, int frow, int fcol)
  51 {
  52   FIELD *New_Field = (FIELD *)0;
  53   int err = E_BAD_ARGUMENT;
  54
  55   if (field && (frow>=0) && (fcol>=0) &&
  56       ((err=E_SYSTEM_ERROR) != 0) && /* trick : this resets the default error */
  57       (New_Field=(FIELD *)malloc(sizeof(FIELD))) )
  58     {
  59       *New_Field         = *_nc_Default_Field;
  60       New_Field->frow    = frow;
  61       New_Field->fcol    = fcol;
  62       New_Field->link    = New_Field;
  63       New_Field->rows    = field->rows;
  64       New_Field->cols    = field->cols;
  65       New_Field->nrow    = field->nrow;
  66       New_Field->drows   = field->drows;
  67       New_Field->dcols   = field->dcols;
  68       New_Field->maxgrow = field->maxgrow;
  69       New_Field->nbuf    = field->nbuf;
  70       New_Field->just    = field->just;
  71       New_Field->fore    = field->fore;
  72       New_Field->back    = field->back;
  73       New_Field->pad     = field->pad;
  74       New_Field->opts    = field->opts;
  75       New_Field->usrptr  = field->usrptr;
  76
  77       if (_nc_Copy_Type(New_Field,field))
  78         {
  79           size_t len;
  80
  81           len = Total_Buffer_Size(New_Field);
  82           if ( (New_Field->buf=(char *)malloc(len)) )
  83             {
  84               memcpy(New_Field->buf,field->buf,len);
  85               return New_Field;
  86             }
  87         }
  88     }
  89
  90   if (New_Field)
  91     free_field(New_Field);
  92
  93   SET_ERROR(err);
  94   return (FIELD *)0;
  95 }
  96
  97 /* fld_dup.c ends here */