Function makeVariableValue

src/bin/pgbench/pgbench.c:1494–1553

Try to convert variable to a value; return false on failure */

/* Try to convert variable to a value; return false on failure */
static bool
makeVariableValue(Variable *var)
{
	size_t		slen;

	if (var->value.type != PGBT_NO_VALUE)
		return true;			/* no work */

	slen = strlen(var->svalue);

	if (slen == 0)
		/* what should it do on ""? */
		return false;

	if (pg_strcasecmp(var->svalue, "null") == 0)
	{
		setNullValue(&var->value);
	}

	/*
	 * accept prefixes such as y, ye, n, no... but not for "o". 0/1 are
	 * recognized later as an int, which is converted to bool if needed.
	 */
	else if (pg_strncasecmp(var->svalue, "true", slen) == 0 ||
			 pg_strncasecmp(var->svalue, "yes", slen) == 0 ||
			 pg_strcasecmp(var->svalue, "on") == 0)
	{
		setBoolValue(&var->value, true);
	}
	else if (pg_strncasecmp(var->svalue, "false", slen) == 0 ||
			 pg_strncasecmp(var->svalue, "no", slen) == 0 ||
			 pg_strcasecmp(var->svalue, "off") == 0 ||
			 pg_strcasecmp(var->svalue, "of") == 0)
	{
		setBoolValue(&var->value, false);
	}
	else if (is_an_int(var->svalue))
	{
		/* if it looks like an int, it must be an int without overflow */
		int64		iv;

		if (!strtoint64(var->svalue, false, &iv))
			return false;

		setIntValue(&var->value, iv);
	}
	else						/* type should be double */
	{
		double		dv;

		if (!strtodouble(var->svalue, true, &dv))
		{
			pg_log_error("malformed variable \"%s\" value: \"%s\"",
						 var->name, var->svalue);
			return false;
		}
		setDoubleValue(&var->value, dv);
	}