made credit/debit more flexible with account names

commandCredit.go

	ensureFileExists(pendingFile)
	args := c.Args()
	name, err := parseAccount(args)
	li := len(args) - 1
	name, err := parseAccount(args[:li])
	check(err)
	amount, err := parseValue(args, name)
	amount, err := parseAmount(args[li])
	check(err)
	a := Account{

commandDebit.go

	ensureFileExists(pendingFile)
	args := c.Args()
	name, err := parseAccount(args)
	li := len(args) - 1
	name, err := parseAccount(args[:li])
	check(err)
	amount, err := parseValue(args, name)
	amount, err := parseAmount(args[li])
	check(err)
	a := Account{

helpers.go

// Parse a given string to extract an account name
func parseAccount(fields []string) (string, error) {
	for i := 0; i < len(fields); i++ {
		if strings.HasPrefix(fields[i], "#") {
			return fields[i], nil
		}
	if len(fields) > 0 {
		return strings.Join(fields, " "), nil
	}
	return fields[0], nil
	return "", errors.New("No account information found")
}
// Parse the given string to extract a proper date
}
// Parse the value from the arguments
func parseAmount(text string) (*big.Rat, error) {
	amount := new(big.Rat)
func parseValue(fields []string, account string) (*big.Rat, error) {
	r := new(big.Rat)
	for i := 0; i < len(fields); i++ {
		if fields[i] != account {
			r.SetString(fields[i])
			return r, nil
		}
	if r, _ := amount.SetString(text); r != nil {
		return amount, nil
	}
	return r, errors.New("No value found")
	return nil, errors.New("No value found")
}