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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, juergen.pfeifer@gmx.net *
* *
***************************************************************************/
#include "form.priv.h"
MODULE_ID("$Id: fty_int.c,v 1.11 2000/12/09 23:46:12 tom 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 */
|
