1 /**************************************************************************** 2 * Copyright (c) 1998-2004,2007 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, 1995,1997 * 31 ****************************************************************************/ 32 33 #include "form.priv.h" 34 35 MODULE_ID("$Id: fld_link.c,v 1.11 2007/10/13 19:30:43 tom Exp $") 36 37 /*--------------------------------------------------------------------------- 38 | Facility : libnform 39 | Function : FIELD *link_field(FIELD *field, int frow, int fcol) 40 | 41 | Description : Duplicates the field at the specified position. The 42 | new field shares its buffers with the original one, 43 | the attributes are independent. 44 | If an error occurs, errno is set to 45 | 46 | E_BAD_ARGUMENT - invalid argument 47 | E_SYSTEM_ERROR - system error 48 | 49 | Return Values : Pointer to the new field or NULL if failure 50 +--------------------------------------------------------------------------*/ 51 NCURSES_EXPORT(FIELD *) 52 link_field(FIELD *field, int frow, int fcol) 53 { 54 FIELD *New_Field = (FIELD *)0; 55 int err = E_BAD_ARGUMENT; 56 57 T((T_CALLED("link_field(%p,%d,%d)"), field, frow, fcol)); 58 if (field && (frow >= 0) && (fcol >= 0) && 59 ((err = E_SYSTEM_ERROR) != 0) && /* trick: this resets the default error */ 60 (New_Field = typeMalloc(FIELD, 1))) 61 { 62 T((T_CREATE("field %p"), New_Field)); 63 *New_Field = *_nc_Default_Field; 64 New_Field->frow = frow; 65 New_Field->fcol = fcol; 66 67 New_Field->link = field->link; 68 field->link = New_Field; 69 70 New_Field->buf = field->buf; 71 New_Field->rows = field->rows; 72 New_Field->cols = field->cols; 73 New_Field->nrow = field->nrow; 74 New_Field->nbuf = field->nbuf; 75 New_Field->drows = field->drows; 76 New_Field->dcols = field->dcols; 77 New_Field->maxgrow = field->maxgrow; 78 New_Field->just = field->just; 79 New_Field->fore = field->fore; 80 New_Field->back = field->back; 81 New_Field->pad = field->pad; 82 New_Field->opts = field->opts; 83 New_Field->usrptr = field->usrptr; 84 85 if (_nc_Copy_Type(New_Field, field)) 86 returnField(New_Field); 87 } 88 89 if (New_Field) 90 free_field(New_Field); 91 92 SET_ERROR(err); 93 returnField((FIELD *)0); 94 } 95 96 /* fld_link.c ends here */ 97