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/* $OpenBSD: fld_def.c,v 1.9 2015/01/23 22:48:51 krw Exp $ */ |
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/**************************************************************************** |
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* Copyright (c) 1998-2005,2007 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_def.c,v 1.9 2015/01/23 22:48:51 krw Exp $") |
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/* this can't be readonly */ |
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static FIELD default_field = |
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{ |
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0, /* status */ |
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0, /* rows */ |
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0, /* cols */ |
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0, /* frow */ |
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0, /* fcol */ |
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0, /* drows */ |
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0, /* dcols */ |
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0, /* maxgrow */ |
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0, /* nrow */ |
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0, /* nbuf */ |
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NO_JUSTIFICATION, /* just */ |
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0, /* page */ |
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0, /* index */ |
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(int)' ', /* pad */ |
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A_NORMAL, /* fore */ |
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A_NORMAL, /* back */ |
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ALL_FIELD_OPTS, /* opts */ |
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(FIELD *)0, /* snext */ |
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(FIELD *)0, /* sprev */ |
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(FIELD *)0, /* link */ |
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(FORM *)0, /* form */ |
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(FIELDTYPE *)0, /* type */ |
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(char *)0, /* arg */ |
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(FIELD_CELL *)0, /* buf */ |
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(char *)0 /* usrptr */ |
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NCURSES_FIELD_EXTENSION |
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}; |
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NCURSES_EXPORT_VAR(FIELD *) |
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_nc_Default_Field = &default_field; |
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/*--------------------------------------------------------------------------- |
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| Facility : libnform |
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| Function : TypeArgument *_nc_Make_Argument( |
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| const FIELDTYPE *typ, |
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| va_list *ap, |
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| int *err ) |
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| |
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| Description : Create an argument structure for the specified type. |
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| Use the type-dependent argument list to construct |
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| it. |
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| |
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| Return Values : Pointer to argument structure. Maybe NULL. |
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| In case of an error in *err an error counter is increased. |
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+--------------------------------------------------------------------------*/ |
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NCURSES_EXPORT(TypeArgument *) |
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_nc_Make_Argument(const FIELDTYPE *typ, va_list *ap, int *err) |
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{ |
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TypeArgument *res = (TypeArgument *)0; |
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TypeArgument *p; |
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if (typ != 0 && (typ->status & _HAS_ARGS) != 0) |
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{ |
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assert(err != 0 && ap != (va_list *)0); |
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if ((typ->status & _LINKED_TYPE) != 0) |
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{ |
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p = typeMalloc(TypeArgument, 1); |
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if (p != 0) |
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{ |
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p->left = _nc_Make_Argument(typ->left, ap, err); |
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p->right = _nc_Make_Argument(typ->right, ap, err); |
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return p; |
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} |
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else |
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{ |
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*err += 1; |
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} |
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} |
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else |
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{ |
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assert(typ->makearg != (void *)0); |
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if (!(res = (TypeArgument *)typ->makearg(ap))) |
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{ |
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*err += 1; |
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} |
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} |
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} |
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return res; |
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} |
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/*--------------------------------------------------------------------------- |
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| Facility : libnform |
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| Function : TypeArgument *_nc_Copy_Argument(const FIELDTYPE *typ, |
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| const TypeArgument *argp, |
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| int *err ) |
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| |
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| Description : Create a copy of an argument structure for the specified |
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| type. |
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| |
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| Return Values : Pointer to argument structure. Maybe NULL. |
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| In case of an error in *err an error counter is increased. |
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+--------------------------------------------------------------------------*/ |
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NCURSES_EXPORT(TypeArgument *) |
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_nc_Copy_Argument(const FIELDTYPE *typ, const TypeArgument *argp, int *err) |
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{ |
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TypeArgument *res = (TypeArgument *)0; |
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TypeArgument *p; |
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if (typ != 0 && (typ->status & _HAS_ARGS) != 0) |
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{ |
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assert(err != 0 && argp != 0); |
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if ((typ->status & _LINKED_TYPE) != 0) |
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{ |
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p = typeMalloc(TypeArgument, 1); |
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if (p != 0) |
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{ |
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p->left = _nc_Copy_Argument(typ, argp->left, err); |
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p->right = _nc_Copy_Argument(typ, argp->right, err); |
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return p; |
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} |
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*err += 1; |
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} |
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else |
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{ |
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if (typ->copyarg != (void *)0) |
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{ |
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if (!(res = (TypeArgument *)(typ->copyarg((const void *)argp)))) |
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{ |
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*err += 1; |
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} |
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} |
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else |
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{ |
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res = (TypeArgument *)argp; |
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} |
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} |
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} |
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return res; |
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} |
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/*--------------------------------------------------------------------------- |
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| Facility : libnform |
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| Function : void _nc_Free_Argument(const FIELDTYPE *typ, |
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| TypeArgument * argp ) |
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| |
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| Description : Release memory associated with the argument structure |
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| for the given fieldtype. |
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| |
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| Return Values : - |
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+--------------------------------------------------------------------------*/ |
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NCURSES_EXPORT(void) |
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_nc_Free_Argument(const FIELDTYPE *typ, TypeArgument *argp) |
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{ |
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if (typ != 0 && (typ->status & _HAS_ARGS) != 0) |
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{ |
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if ((typ->status & _LINKED_TYPE) != 0) |
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{ |
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assert(argp != 0); |
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_nc_Free_Argument(typ->left, argp->left); |
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_nc_Free_Argument(typ->right, argp->right); |
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free(argp); |
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} |
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else |
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{ |
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if (typ->freearg != (void *)0) |
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{ |
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typ->freearg((void *)argp); |
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} |
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} |
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} |
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} |
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/*--------------------------------------------------------------------------- |
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| Facility : libnform |
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| Function : bool _nc_Copy_Type( FIELD *dst, FIELD const *src ) |
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| |
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| Description : Copy argument structure of field src to field dst |
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| |
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| Return Values : TRUE - copy worked |
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| FALSE - error occurred |
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+--------------------------------------------------------------------------*/ |
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NCURSES_EXPORT(bool) |
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_nc_Copy_Type(FIELD *dst, FIELD const *src) |
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{ |
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int err = 0; |
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assert(dst != 0 && src != 0); |
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dst->type = src->type; |
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dst->arg = (void *)_nc_Copy_Argument(src->type, (TypeArgument *)(src->arg), &err); |
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if (err != 0) |
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{ |
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_nc_Free_Argument(dst->type, (TypeArgument *)(dst->arg)); |
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dst->type = (FIELDTYPE *)0; |
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dst->arg = (void *)0; |
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return FALSE; |
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} |
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else |
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{ |
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if (dst->type != 0) |
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{ |
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dst->type->ref++; |
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} |
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return TRUE; |
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} |
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} |
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/*--------------------------------------------------------------------------- |
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| Facility : libnform |
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| Function : void _nc_Free_Type( FIELD *field ) |
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| |
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| Description : Release Argument structure for this field |
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| Return Values : - |
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+--------------------------------------------------------------------------*/ |
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NCURSES_EXPORT(void) |
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_nc_Free_Type(FIELD *field) |
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{ |
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assert(field != 0); |
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if (field->type != 0) |
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{ |
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field->type->ref--; |
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} |
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_nc_Free_Argument(field->type, (TypeArgument *)(field->arg)); |
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} |
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/*--------------------------------------------------------------------------- |
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| Facility : libnform |
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| Function : FIELD *new_field( int rows, int cols, |
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| int frow, int fcol, |
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| int nrow, int nbuf ) |
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| |
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| Description : Create a new field with this many 'rows' and 'cols', |
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| starting at 'frow/fcol' in the subwindow of the form. |
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| Allocate 'nrow' off-screen rows and 'nbuf' additional |
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| buffers. If an error occurs, errno is set to |
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| |
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| E_BAD_ARGUMENT - invalid argument |
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| E_SYSTEM_ERROR - system error |
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| |
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| Return Values : Pointer to the new field or NULL if failure. |
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+--------------------------------------------------------------------------*/ |
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NCURSES_EXPORT(FIELD *) |
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new_field(int rows, int cols, int frow, int fcol, int nrow, int nbuf) |
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{ |
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static const FIELD_CELL blank = BLANK; |
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static const FIELD_CELL zeros = ZEROS; |
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FIELD *New_Field = (FIELD *)0; |
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int err = E_BAD_ARGUMENT; |
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T((T_CALLED("new_field(%d,%d,%d,%d,%d,%d)"), rows, cols, frow, fcol, nrow, nbuf)); |
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if (rows > 0 && |
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cols > 0 && |
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frow >= 0 && |
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fcol >= 0 && |
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nrow >= 0 && |
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nbuf >= 0 && |
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((err = E_SYSTEM_ERROR) != 0) && /* trick: this resets the default error */ |
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(New_Field = typeMalloc(FIELD, 1)) != 0) |
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{ |
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T((T_CREATE("field %p"), New_Field)); |
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*New_Field = default_field; |
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New_Field->rows = rows; |
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New_Field->cols = cols; |
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New_Field->drows = rows + nrow; |
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New_Field->dcols = cols; |
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New_Field->frow = frow; |
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New_Field->fcol = fcol; |
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New_Field->nrow = nrow; |
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New_Field->nbuf = nbuf; |
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New_Field->link = New_Field; |
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#if USE_WIDEC_SUPPORT |
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New_Field->working = newpad(1, Buffer_Length(New_Field) + 1); |
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New_Field->expanded = typeCalloc(char *, 1 + (unsigned)nbuf); |
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#endif |
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if (_nc_Copy_Type(New_Field, &default_field)) |
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{ |
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size_t len; |
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len = Total_Buffer_Size(New_Field); |
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if ((New_Field->buf = (FIELD_CELL *)malloc(len))) |
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{ |
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/* Prefill buffers with blanks and insert terminating zeroes |
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between buffers */ |
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int i, j; |
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int cells = Buffer_Length(New_Field); |
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for (i = 0; i <= New_Field->nbuf; i++) |
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{ |
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FIELD_CELL *buffer = &(New_Field->buf[(cells + 1) * i]); |
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for (j = 0; j < cells; ++j) |
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{ |
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buffer[j] = blank; |
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} |
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buffer[j] = zeros; |
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} |
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returnField(New_Field); |
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} |
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} |
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} |
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if (New_Field) |
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free_field(New_Field); |
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SET_ERROR(err); |
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returnField((FIELD *)0); |
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} |
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/*--------------------------------------------------------------------------- |
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| Facility : libnform |
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| Function : int free_field( FIELD *field ) |
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| |
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| Description : Frees the storage allocated for the field. |
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| |
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| Return Values : E_OK - success |
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| E_BAD_ARGUMENT - invalid field pointer |
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| E_CONNECTED - field is connected |
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+--------------------------------------------------------------------------*/ |
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NCURSES_EXPORT(int) |
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free_field(FIELD *field) |
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{ |
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T((T_CALLED("free_field(%p)"), field)); |
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if (!field) |
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{ |
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RETURN(E_BAD_ARGUMENT); |
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} |
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else if (field->form != 0) |
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{ |
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RETURN(E_CONNECTED); |
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} |
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else if (field == field->link) |
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{ |
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if (field->buf != 0) |
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free(field->buf); |
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} |
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else |
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{ |
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FIELD *f; |
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for (f = field; f->link != field; f = f->link) |
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{ |
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} |
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f->link = field->link; |
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} |
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_nc_Free_Type(field); |
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#if USE_WIDEC_SUPPORT |
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if (field->expanded != 0) |
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{ |
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int n; |
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|
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for (n = 0; n <= field->nbuf; ++n) |
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{ |
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FreeIfNeeded(field->expanded[n]); |
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} |
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free(field->expanded); |
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(void)delwin(field->working); |
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} |
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#endif |
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free(field); |
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RETURN(E_OK); |
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} |
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|
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/* fld_def.c ends here */ |