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https://github.com/Aigor44/ncursesw-morphos.git
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140 lines
4.2 KiB
C
140 lines
4.2 KiB
C
/*
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* THIS CODE IS SPECIFICALLY EXEMPTED FROM THE NCURSES PACKAGE COPYRIGHT.
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* You may freely copy it for use as a template for your own field types.
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* If you develop a field type that might be of general use, please send
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* it back to the ncurses maintainers for inclusion in the next version.
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*/
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/***************************************************************************
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* *
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* Author : Juergen Pfeifer *
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* *
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***************************************************************************/
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#include "form.priv.h"
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MODULE_ID("$Id: fty_alnum.c,v 1.18 2005/08/20 18:26:16 tom Exp $")
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#define thisARG alnumARG
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typedef struct
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{
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int width;
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}
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thisARG;
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/*---------------------------------------------------------------------------
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| Facility : libnform
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| Function : static void *Make_This_Type(va_list *ap)
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| Description : Allocate structure for alphanumeric type argument.
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| Return Values : Pointer to argument structure or NULL on error
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+--------------------------------------------------------------------------*/
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static void *
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Make_This_Type(va_list *ap)
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{
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thisARG *argp = (thisARG *) malloc(sizeof(thisARG));
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if (argp)
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argp->width = va_arg(*ap, int);
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return ((void *)argp);
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}
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/*---------------------------------------------------------------------------
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| Facility : libnform
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| Function : static void *Copy_ThisType(const void *argp)
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| Description : Copy structure for alphanumeric type argument.
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| Return Values : Pointer to argument structure or NULL on error.
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+--------------------------------------------------------------------------*/
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static void *
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Copy_This_Type(const void *argp)
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{
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const thisARG *ap = (const thisARG *)argp;
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thisARG *result = (thisARG *) malloc(sizeof(thisARG));
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if (result)
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*result = *ap;
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return ((void *)result);
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}
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/*---------------------------------------------------------------------------
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| Facility : libnform
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| Function : static void Free_This_Type(void *argp)
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| Description : Free structure for alphanumeric type argument.
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| Return Values : -
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+--------------------------------------------------------------------------*/
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static void
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Free_This_Type(void *argp)
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{
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if (argp)
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free(argp);
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}
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/*---------------------------------------------------------------------------
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| Facility : libnform
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| Function : static bool Check_This_Character(
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| int c,
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| const void *argp)
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| Description : Check a character for the alphanumeric type.
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| Return Values : TRUE - character is valid
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| FALSE - character is invalid
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+--------------------------------------------------------------------------*/
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static bool
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Check_This_Character(int c, const void *argp GCC_UNUSED)
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{
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#if USE_WIDEC_SUPPORT
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if (iswalnum((wint_t) c))
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return TRUE;
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#endif
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return (isalnum(UChar(c)) ? TRUE : FALSE);
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}
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/*---------------------------------------------------------------------------
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| Facility : libnform
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| Function : static bool Check_This_Field(
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| FIELD *field,
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| const void *argp)
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| Description : Validate buffer content to be a valid alphanumeric value
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| Return Values : TRUE - field is valid
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| FALSE - field is invalid
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+--------------------------------------------------------------------------*/
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static bool
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Check_This_Field(FIELD *field, const void *argp)
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{
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int width = ((const thisARG *)argp)->width;
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unsigned char *bp = (unsigned char *)field_buffer(field, 0);
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bool result = (width < 0);
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Check_CTYPE_Field(result, bp, width, Check_This_Character);
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return (result);
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}
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static FIELDTYPE typeTHIS =
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{
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_HAS_ARGS | _RESIDENT,
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1, /* this is mutable, so we can't be const */
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(FIELDTYPE *)0,
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(FIELDTYPE *)0,
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Make_This_Type,
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Copy_This_Type,
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Free_This_Type,
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Check_This_Field,
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Check_This_Character,
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NULL,
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NULL
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};
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NCURSES_EXPORT_VAR(FIELDTYPE*) TYPE_ALNUM = &typeTHIS;
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/* fty_alnum.c ends here */
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