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/* $OpenBSD: fld_newftyp.c,v 1.7 2015/01/23 22:48:51 krw Exp $ */ |
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/**************************************************************************** |
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* Copyright (c) 1998-2004,2007 Free Software Foundation, Inc. * |
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* * |
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* Permission is hereby granted, free of charge, to any person obtaining a * |
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* copy of this software and associated documentation files (the * |
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* "Software"), to deal in the Software without restriction, including * |
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* without limitation the rights to use, copy, modify, merge, publish, * |
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* distribute, distribute with modifications, sublicense, and/or sell * |
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* copies of the Software, and to permit persons to whom the Software is * |
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* furnished to do so, subject to the following conditions: * |
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* * |
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* The above copyright notice and this permission notice shall be included * |
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* in all copies or substantial portions of the Software. * |
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* * |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * |
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * |
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * |
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * |
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * |
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. * |
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* * |
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* Except as contained in this notice, the name(s) of the above copyright * |
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* holders shall not be used in advertising or otherwise to promote the * |
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* sale, use or other dealings in this Software without prior written * |
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* authorization. * |
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****************************************************************************/ |
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/**************************************************************************** |
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* Author: Juergen Pfeifer, 1995,1997 * |
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****************************************************************************/ |
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#include "form.priv.h" |
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MODULE_ID("$Id: fld_newftyp.c,v 1.7 2015/01/23 22:48:51 krw Exp $") |
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static FIELDTYPE const default_fieldtype = |
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{ |
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0, /* status */ |
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0L, /* reference count */ |
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(FIELDTYPE *)0, /* pointer to left operand */ |
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(FIELDTYPE *)0, /* pointer to right operand */ |
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NULL, /* makearg function */ |
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NULL, /* copyarg function */ |
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NULL, /* freearg function */ |
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NULL, /* field validation function */ |
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NULL, /* Character check function */ |
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NULL, /* enumerate next function */ |
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NULL /* enumerate previous function */ |
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}; |
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NCURSES_EXPORT_VAR(const FIELDTYPE *) |
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_nc_Default_FieldType = &default_fieldtype; |
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/*--------------------------------------------------------------------------- |
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| Facility : libnform |
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| Function : FIELDTYPE *new_fieldtype( |
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| bool (* const field_check)(FIELD *,const void *), |
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| bool (* const char_check) (int, const void *) ) |
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| |
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| Description : Create a new fieldtype. The application programmer must |
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| write a field_check and a char_check function and give |
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| them as input to this call. |
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| If an error occurs, errno is set to |
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| E_BAD_ARGUMENT - invalid arguments |
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| E_SYSTEM_ERROR - system error (no memory) |
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| |
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| Return Values : Fieldtype pointer or NULL if error occurred |
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+--------------------------------------------------------------------------*/ |
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NCURSES_EXPORT(FIELDTYPE *) |
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new_fieldtype(bool (*const field_check) (FIELD *, const void *), |
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bool (*const char_check) (int, const void *)) |
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{ |
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FIELDTYPE *nftyp = (FIELDTYPE *)0; |
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T((T_CALLED("new_fieldtype(%p,%p)"), field_check, char_check)); |
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if ((field_check) || (char_check)) |
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{ |
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nftyp = typeMalloc(FIELDTYPE, 1); |
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if (nftyp) |
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{ |
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T((T_CREATE("fieldtype %p"), nftyp)); |
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*nftyp = default_fieldtype; |
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nftyp->fcheck = field_check; |
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nftyp->ccheck = char_check; |
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} |
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else |
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{ |
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SET_ERROR(E_SYSTEM_ERROR); |
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} |
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} |
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else |
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{ |
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SET_ERROR(E_BAD_ARGUMENT); |
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} |
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returnFieldType(nftyp); |
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} |
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/*--------------------------------------------------------------------------- |
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| Facility : libnform |
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| Function : int free_fieldtype(FIELDTYPE *typ) |
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| |
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| Description : Release the memory associated with this fieldtype. |
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| |
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| Return Values : E_OK - success |
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| E_CONNECTED - there are fields referencing the type |
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| E_BAD_ARGUMENT - invalid fieldtype pointer |
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+--------------------------------------------------------------------------*/ |
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NCURSES_EXPORT(int) |
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free_fieldtype(FIELDTYPE *typ) |
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{ |
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T((T_CALLED("free_fieldtype(%p)"), typ)); |
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if (!typ) |
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RETURN(E_BAD_ARGUMENT); |
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if (typ->ref != 0) |
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RETURN(E_CONNECTED); |
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if (typ->status & _RESIDENT) |
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RETURN(E_CONNECTED); |
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if (typ->status & _LINKED_TYPE) |
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{ |
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if (typ->left) |
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typ->left->ref--; |
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if (typ->right) |
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typ->right->ref--; |
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} |
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free(typ); |
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RETURN(E_OK); |
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} |
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/* fld_newftyp.c ends here */ |