bool Parser::floating(std::string::iterator& iter, double& val)
{
auto localIter = iter;
double localValue = 0;
// A single digit
int dgt = 0;
// Number of digits
int numDgt = 0;
if(isDecimalPoint(localIter))
return false;
while (digit(localIter))
{
dgt = (*localIter) - '0';
numDgt++;
localValue = localValue * 10 + dgt;
localIter++;
// If there is a decimal point then return false
if (isDecimalPoint(localIter))
return false;
}
// Push the digits next to the decimal point
while ((int)localValue % 10)
localValue /= 10;
iter = localIter;
val = localValue;
return true;
}
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : static bool Check_This_Character(
| int c,
| const void * argp)
|
| Description : Check a character for the numeric type.
|
| Return Values : TRUE - character is valid
| FALSE - character is invalid
+--------------------------------------------------------------------------*/
static bool
Check_This_Character(int c, const void *argp)
{
const thisARG *argn = (const thisARG *)argp;
struct lconv *L = argn->L;
return ((isDigit(c) ||
c == '+' ||
c == '-' ||
isDecimalPoint(c))
? TRUE
: FALSE);
}
bool Parser::number(std::string::iterator &iter, double& val)
{
auto localIter = iter;
double localValue = 0;
// A single digit
int dgt = 0;
// If next char is a digit or it was a decimal point previously then try to list all digits/decimal points
if (digit(localIter) || isDecimalPoint(localIter))
{
double floatVal = 0;
// While finding digits or decimal points
while (digit(localIter) || isDecimalPoint(localIter))
{
if (character(localIter, '.'))
{
if (!floating(localIter, floatVal))
throw std::exception("Syntax error");
}
else
{
// Convert every digit to number and then add to the value
dgt = (*localIter) - '0';
localValue = localValue * 10 + dgt;
localIter++;
}
}
// If found all the digits set factor's value and iter to the local
localValue = localValue + floatVal;
iter = localIter;
val = localValue;
return true;
}
return false;
}
/*---------------------------------------------------------------------------
| Facility : libnform
| Function : static bool Check_This_Field(FIELD * field,
| const void * argp)
|
| Description : Validate buffer content to be a valid numeric value
|
| Return Values : TRUE - field is valid
| FALSE - field is invalid
+--------------------------------------------------------------------------*/
static bool
Check_This_Field(FIELD *field, const void *argp)
{
const thisARG *argn = (const thisARG *)argp;
double low = argn->low;
double high = argn->high;
int prec = argn->precision;
unsigned char *bp = (unsigned char *)field_buffer(field, 0);
char *s = (char *)bp;
double val = 0.0;
struct lconv *L = argn->L;
char buf[64];
bool result = FALSE;
while (*bp && *bp == ' ')
bp++;
if (*bp)
{
if (*bp == '-' || *bp == '+')
bp++;
#if USE_WIDEC_SUPPORT
if (*bp)
{
bool blank = FALSE;
int state = 0;
int len;
int n;
wchar_t *list = _nc_Widen_String((char *)bp, &len);
if (list != 0)
{
result = TRUE;
for (n = 0; n < len; ++n)
{
if (blank)
{
if (list[n] != ' ')
{
result = FALSE;
break;
}
}
else if (list[n] == ' ')
{
blank = TRUE;
}
else if (isDecimalPoint(list[n]))
{
if (++state > 1)
{
result = FALSE;
break;
}
}
else if (!isDigit(list[n]))
{
result = FALSE;
break;
}
}
free(list);
}
}
#else
while (*bp)
{
if (!isdigit(UChar(*bp)))
break;
bp++;
}
if (isDecimalPoint(*bp))
{
bp++;
while (*bp)
{
if (!isdigit(UChar(*bp)))
break;
bp++;
}
}
while (*bp && *bp == ' ')
bp++;
result = (*bp == '\0');
#endif
if (result)
{
val = atof(s);
if (low < high)
{
if (val < low || val > high)
result = FALSE;
}
if (result)
{
sprintf(buf, "%.*f", (prec > 0 ? prec : 0), val);
set_field_buffer(field, 0, buf);
}
}
}
return (result);
}
