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-
- /*
- * THIS CODE IS SPECIFICALLY EXEMPTED FROM THE NCURSES PACKAGE COPYRIGHT.
- * You may freely copy it for use as a template for your own field types.
- * If you develop a field type that might be of general use, please send
- * it back to the ncurses maintainers for inclusion in the next version.
- */
- /***************************************************************************
- * *
- * Author : Juergen Pfeifer *
- * Contact: http://www.familiepfeifer.de/Contact.aspx?Lang=en *
- * *
- ***************************************************************************/
-
- #include "form.priv.h"
-
- MODULE_ID("$Id: fty_alpha.c,v 1.11 2002/07/06 15:33:27 juergen Exp $")
-
- typedef struct {
- int width;
- } alphaARG;
-
- /*---------------------------------------------------------------------------
- | Facility : libnform
- | Function : static void *Make_Alpha_Type(va_list *ap)
- |
- | Description : Allocate structure for alpha type argument.
- |
- | Return Values : Pointer to argument structure or NULL on error
- +--------------------------------------------------------------------------*/
- static void *Make_Alpha_Type(va_list * ap)
- {
- alphaARG *argp = (alphaARG *)malloc(sizeof(alphaARG));
- if (argp)
- {
- argp->width = va_arg(*ap,int);
- }
- return ((void *)argp);
- }
-
- /*---------------------------------------------------------------------------
- | Facility : libnform
- | Function : static void *Copy_Alpha_Type(const void * argp)
- |
- | Description : Copy structure for alpha type argument.
- |
- | Return Values : Pointer to argument structure or NULL on error.
- +--------------------------------------------------------------------------*/
- static void *Copy_Alpha_Type(const void * argp)
- {
- const alphaARG *ap = (const alphaARG *)argp;
- alphaARG *result = (alphaARG *)malloc(sizeof(alphaARG));
-
- if (result)
- {
- *result = *ap;
- }
- return ((void *)result);
- }
-
- /*---------------------------------------------------------------------------
- | Facility : libnform
- | Function : static void Free_Alpha_Type( void * argp )
- |
- | Description : Free structure for alpha type argument.
- |
- | Return Values : -
- +--------------------------------------------------------------------------*/
- static void Free_Alpha_Type(void * argp)
- {
- if (argp)
- free(argp);
- }
-
- /*---------------------------------------------------------------------------
- | Facility : libnform
- | Function : static bool Check_Alpha_Field(
- | FIELD * field,
- | const void * argp)
- |
- | Description : Validate buffer content to be a valid alpha value
- |
- | Return Values : TRUE - field is valid
- | FALSE - field is invalid
- +--------------------------------------------------------------------------*/
- static bool Check_Alpha_Field(FIELD * field, const void * argp)
- {
- int width = ((const alphaARG *)argp)->width;
- unsigned char *bp = (unsigned char *)field_buffer(field,0);
- int l = -1;
- unsigned char *s;
-
- while(*bp && *bp==' ')
- bp++;
- if (*bp)
- {
- s = bp;
- while(*bp && isalpha(*bp))
- bp++;
- l = (int)(bp-s);
- while(*bp && *bp==' ')
- bp++;
- }
- return ((*bp || (l < width)) ? FALSE : TRUE);
- }
-
- /*---------------------------------------------------------------------------
- | Facility : libnform
- | Function : static bool Check_Alpha_Character(
- | int c,
- | const void * argp)
- |
- | Description : Check a character for the alpha type.
- |
- | Return Values : TRUE - character is valid
- | FALSE - character is invalid
- +--------------------------------------------------------------------------*/
- static bool Check_Alpha_Character(int c, const void * argp GCC_UNUSED)
- {
- return (isalpha(c) ? TRUE : FALSE);
- }
-
- static FIELDTYPE typeALPHA = {
- _HAS_ARGS | _RESIDENT,
- 1, /* this is mutable, so we can't be const */
- (FIELDTYPE *)0,
- (FIELDTYPE *)0,
- Make_Alpha_Type,
- Copy_Alpha_Type,
- Free_Alpha_Type,
- Check_Alpha_Field,
- Check_Alpha_Character,
- NULL,
- NULL
- };
-
- NCURSES_EXPORT_VAR(FIELDTYPE*) TYPE_ALPHA = &typeALPHA;
-
- /* fty_alpha.c ends here */
-