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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_int.c,v 1.12 2002/07/06 15:33:27 juergen Exp $")
-
- typedef struct {
- int precision;
- long low;
- long high;
- } integerARG;
-
- /*---------------------------------------------------------------------------
- | Facility : libnform
- | Function : static void *Make_Integer_Type( va_list * ap )
- |
- | Description : Allocate structure for integer type argument.
- |
- | Return Values : Pointer to argument structure or NULL on error
- +--------------------------------------------------------------------------*/
- static void *Make_Integer_Type(va_list * ap)
- {
- integerARG *argp = (integerARG *)malloc(sizeof(integerARG));
-
- if (argp)
- {
- argp->precision = va_arg(*ap,int);
- argp->low = va_arg(*ap,long);
- argp->high = va_arg(*ap,long);
- }
- return (void *)argp;
- }
-
- /*---------------------------------------------------------------------------
- | Facility : libnform
- | Function : static void *Copy_Integer_Type(const void * argp)
- |
- | Description : Copy structure for integer type argument.
- |
- | Return Values : Pointer to argument structure or NULL on error.
- +--------------------------------------------------------------------------*/
- static void *Copy_Integer_Type(const void * argp)
- {
- const integerARG *ap = (const integerARG *)argp;
- integerARG *result = (integerARG *)0;
-
- if (argp)
- {
- result = (integerARG *)malloc(sizeof(integerARG));
- if (result)
- *result = *ap;
- }
- return (void *)result;
- }
-
- /*---------------------------------------------------------------------------
- | Facility : libnform
- | Function : static void Free_Integer_Type(void * argp)
- |
- | Description : Free structure for integer type argument.
- |
- | Return Values : -
- +--------------------------------------------------------------------------*/
- static void Free_Integer_Type(void * argp)
- {
- if (argp)
- free(argp);
- }
-
- /*---------------------------------------------------------------------------
- | Facility : libnform
- | Function : static bool Check_Integer_Field(
- | FIELD * field,
- | const void * argp)
- |
- | Description : Validate buffer content to be a valid integer value
- |
- | Return Values : TRUE - field is valid
- | FALSE - field is invalid
- +--------------------------------------------------------------------------*/
- static bool Check_Integer_Field(FIELD * field, const void * argp)
- {
- const integerARG *argi = (const integerARG *)argp;
- long low = argi->low;
- long high = argi->high;
- int prec = argi->precision;
- unsigned char *bp = (unsigned char *)field_buffer(field,0);
- char *s = (char *)bp;
- long val;
- char buf[100];
-
- while( *bp && *bp==' ') bp++;
- if (*bp)
- {
- if (*bp=='-') bp++;
- while (*bp)
- {
- if (!isdigit(*bp)) break;
- bp++;
- }
- while(*bp && *bp==' ') bp++;
- if (*bp=='\0')
- {
- val = atol(s);
- if (low<high)
- {
- if (val<low || val>high) return FALSE;
- }
- sprintf(buf,"%.*ld",(prec>0?prec:0),val);
- set_field_buffer(field,0,buf);
- return TRUE;
- }
- }
- return FALSE;
- }
-
- /*---------------------------------------------------------------------------
- | Facility : libnform
- | Function : static bool Check_Integer_Character(
- | int c,
- | const void * argp)
- |
- | Description : Check a character for the integer type.
- |
- | Return Values : TRUE - character is valid
- | FALSE - character is invalid
- +--------------------------------------------------------------------------*/
- static bool Check_Integer_Character(int c, const void * argp GCC_UNUSED)
- {
- return ((isdigit(c) || (c=='-')) ? TRUE : FALSE);
- }
-
- static FIELDTYPE typeINTEGER = {
- _HAS_ARGS | _RESIDENT,
- 1, /* this is mutable, so we can't be const */
- (FIELDTYPE *)0,
- (FIELDTYPE *)0,
- Make_Integer_Type,
- Copy_Integer_Type,
- Free_Integer_Type,
- Check_Integer_Field,
- Check_Integer_Character,
- NULL,
- NULL
- };
-
- NCURSES_EXPORT_VAR(FIELDTYPE*) TYPE_INTEGER = &typeINTEGER;
-
- /* fty_int.c ends here */
-