57b4d3003b
Co-authored-by: Marko <marko@baricevic.me> Co-authored-by: Julien Robert <julien@rbrt.fr>
63 lines
1.7 KiB
Go
63 lines
1.7 KiB
Go
package coins
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import (
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"errors"
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"regexp"
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"strings"
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basev1beta1 "cosmossdk.io/api/cosmos/base/v1beta1"
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)
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// Amount can be a whole number or a decimal number. Denominations can be 3 ~ 128
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// characters long and support letters, followed by either a letter, a number or
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// a separator ('/', ':', '.', '_' or '-').
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var coinRegex = regexp.MustCompile(`^(\d+(\.\d+)?)([a-zA-Z][a-zA-Z0-9\/\:\._\-]{2,127})$`)
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// ParseCoin parses a coin from a string. The string must be in the format
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// <amount><denom>, where <amount> is a number and <denom> is a valid denom.
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func ParseCoin(input string) (*basev1beta1.Coin, error) {
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amount, denom, err := parseCoin(input)
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if err != nil {
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return nil, err
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}
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return &basev1beta1.Coin{
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Amount: amount,
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Denom: denom,
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}, nil
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}
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// ParseDecCoin parses a decCoin from a string. The string must be in the format
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// <amount><denom>, where <amount> is a number and <denom> is a valid denom.
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func ParseDecCoin(input string) (*basev1beta1.DecCoin, error) {
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amount, denom, err := parseCoin(input)
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if err != nil {
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return nil, err
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}
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return &basev1beta1.DecCoin{
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Amount: amount,
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Denom: denom,
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}, nil
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}
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// parseCoin parses a coin string into its amount and denom components.
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// The input string must be in the format <amount><denom>.
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// It returns the amount string, denom string, and any error encountered.
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// Returns an error if the input is empty or doesn't match the expected format.
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func parseCoin(input string) (amount, denom string, err error) {
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input = strings.TrimSpace(input)
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if input == "" {
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return "", "", errors.New("empty input when parsing coin")
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}
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matches := coinRegex.FindStringSubmatch(input)
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if len(matches) == 0 {
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return "", "", errors.New("invalid input format")
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}
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return matches[1], matches[3], nil
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}
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