1 /* $OpenBSD: fld_link.c,v 1.4 2001/01/22 18:02:12 millert Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998,2000 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1995,1997 * 33 ****************************************************************************/ 34 35 #include "form.priv.h" 36 37 MODULE_ID("$From: fld_link.c,v 1.5 2000/12/10 02:09:38 tom Exp $") 38 39 /*--------------------------------------------------------------------------- 40 | Facility : libnform 41 | Function : FIELD *link_field(FIELD *field, int frow, int fcol) 42 | 43 | Description : Duplicates the field at the specified position. The 44 | new field shares its buffers with the original one, 45 | the attributes are independent. 46 | If an error occurs, errno is set to 47 | 48 | E_BAD_ARGUMENT - invalid argument 49 | E_SYSTEM_ERROR - system error 50 | 51 | Return Values : Pointer to the new field or NULL if failure 52 +--------------------------------------------------------------------------*/ 53 NCURSES_EXPORT(FIELD *) 54 link_field (FIELD * field, int frow, int fcol) 55 { 56 FIELD *New_Field = (FIELD *)0; 57 int err = E_BAD_ARGUMENT; 58 59 if (field && (frow>=0) && (fcol>=0) && 60 ((err=E_SYSTEM_ERROR) != 0) && /* trick: this resets the default error */ 61 (New_Field = (FIELD *)malloc(sizeof(FIELD))) ) 62 { 63 *New_Field = *_nc_Default_Field; 64 New_Field->frow = frow; 65 New_Field->fcol = fcol; 66 New_Field->link = field->link; 67 field->link = New_Field; 68 New_Field->buf = field->buf; 69 New_Field->rows = field->rows; 70 New_Field->cols = field->cols; 71 New_Field->nrow = field->nrow; 72 New_Field->nbuf = field->nbuf; 73 New_Field->drows = field->drows; 74 New_Field->dcols = field->dcols; 75 New_Field->maxgrow= field->maxgrow; 76 New_Field->just = field->just; 77 New_Field->fore = field->fore; 78 New_Field->back = field->back; 79 New_Field->pad = field->pad; 80 New_Field->opts = field->opts; 81 New_Field->usrptr = field->usrptr; 82 if (_nc_Copy_Type(New_Field,field)) 83 return New_Field; 84 } 85 86 if (New_Field) 87 free_field(New_Field); 88 89 SET_ERROR( err ); 90 return (FIELD *)0; 91 } 92 93 /* fld_link.c ends here */ 94