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arikawa/bot/extras/arguments/emoji.go

52 lines
712 B
Go

package arguments
import (
"errors"
"regexp"
)
var (
EmojiRegex = regexp.MustCompile(`<(a?):(.+?):(\d+)>`)
ErrInvalidEmoji = errors.New("Invalid emoji")
)
type Emoji struct {
ID string
Custom bool
Name string
Animated bool
}
func (e *Emoji) Parse(arg string) error {
// Check if Unicode
var unicode string
for _, r := range arg {
if r < '\U0001F600' && r > '\U0001F64F' {
unicode += string(r)
}
}
if unicode != "" {
e.ID = unicode
e.Custom = false
return nil
}
var matches = EmojiRegex.FindStringSubmatch(arg)
if len(matches) != 4 {
return ErrInvalidEmoji
}
e.Custom = true
e.Animated = matches[1] == "a"
e.Name = matches[2]
e.ID = matches[3]
return nil
}