1 /**************************************************************************** 2 * Copyright 2020 Thomas E. Dickey * 3 * Copyright 1998-2010,2012 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Juergen Pfeifer, 1995,1997 * 32 ****************************************************************************/ 33 34 #include "form.priv.h" 35 36 MODULE_ID("$Id: fld_link.c,v 1.16 2020/12/11 23:20:32 tom Exp $") 37 38 /*--------------------------------------------------------------------------- 39 | Facility : libnform 40 | Function : FIELD *link_field(FIELD *field, int frow, int fcol) 41 | 42 | Description : Duplicates the field at the specified position. The 43 | new field shares its buffers with the original one, 44 | the attributes are independent. 45 | If an error occurs, errno is set to 46 | 47 | E_BAD_ARGUMENT - invalid argument 48 | E_SYSTEM_ERROR - system error 49 | 50 | Return Values : Pointer to the new field or NULL if failure 51 +--------------------------------------------------------------------------*/ 52 FORM_EXPORT(FIELD *) 53 link_field(FIELD *field, int frow, int fcol) 54 { 55 FIELD *New_Field = (FIELD *)0; 56 int err = E_BAD_ARGUMENT; 57 58 T((T_CALLED("link_field(%p,%d,%d)"), (void *)field, frow, fcol)); 59 if (field && (frow >= 0) && (fcol >= 0) && 60 ((err = E_SYSTEM_ERROR) != 0) && /* trick: this resets the default error */ 61 (New_Field = typeMalloc(FIELD, 1))) 62 { 63 T((T_CREATE("field %p"), (void *)New_Field)); 64 *New_Field = *_nc_Default_Field; 65 New_Field->frow = (short)frow; 66 New_Field->fcol = (short)fcol; 67 68 New_Field->link = field->link; 69 field->link = New_Field; 70 71 New_Field->buf = field->buf; 72 New_Field->rows = field->rows; 73 New_Field->cols = field->cols; 74 New_Field->nrow = field->nrow; 75 New_Field->nbuf = field->nbuf; 76 New_Field->drows = field->drows; 77 New_Field->dcols = field->dcols; 78 New_Field->maxgrow = field->maxgrow; 79 New_Field->just = field->just; 80 New_Field->fore = field->fore; 81 New_Field->back = field->back; 82 New_Field->pad = field->pad; 83 New_Field->opts = field->opts; 84 New_Field->usrptr = field->usrptr; 85 86 if (_nc_Copy_Type(New_Field, field)) 87 returnField(New_Field); 88 } 89 90 if (New_Field) 91 free_field(New_Field); 92 93 SET_ERROR(err); 94 returnField((FIELD *)0); 95 } 96 97 /* fld_link.c ends here */ 98