Function CVT_get_boolean

src/common/cvt.cpp:1343–1381

Get the value of a boolean descriptor.

// Get the value of a boolean descriptor.
bool CVT_get_boolean(const dsc* desc, ErrorFunction err)
{
	switch (desc->dsc_dtype)
	{
		case dtype_boolean:
			return *desc->dsc_address != '\0';

		case dtype_varying:
		case dtype_cstring:
		case dtype_text:
		{
			VaryStr<TEMP_STR_LENGTH> buffer;	// arbitrarily large
			const char* p = NULL;
			int len = CVT_make_string(desc, ttype_ascii, &p, &buffer, sizeof(buffer), 0, err);

			// Remove heading and trailing spaces.

			while (len > 0 && isspace((UCHAR) *p))
			{
				++p;
				--len;
			}

			while (len > 0 && isspace((UCHAR) p[len - 1]))
				--len;

			if (len == 4 && fb_utils::strnicmp(p, "TRUE", len) == 0)
				return true;
			else if (len == 5 && fb_utils::strnicmp(p, "FALSE", len) == 0)
				return false;

			// fall into
		}

		default:
			CVT_conversion_error(desc, err);
			return false;	// silence warning
	}
}


double CVT_get_double(const dsc* desc, DecimalStatus decSt, ErrorFunction err, bool* getNumericOverflow)