54 lines
1.0 KiB
Go
Executable File
54 lines
1.0 KiB
Go
Executable File
package core
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import (
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"regexp"
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"strings"
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)
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// source on www.socketloop.com
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func removeCharacters(input string, characters string) string {
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filter := func(r rune) rune {
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if strings.IndexRune(characters, r) < 0 {
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return r
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}
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return -1
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}
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return strings.Map(filter, input)
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}
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// https://stackoverflow.com/questions/34839659/how-can-i-easily-get-a-substring-in-go-while-guarding-against-slice-bounds-out
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func maxString(s string, max int) string {
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if len(s) > max {
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r := 0
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for i := range s {
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r++
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if r > max {
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return s[:i]
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}
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}
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}
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return s
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}
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// this only strip custom emoji, not default unicode ones
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func stripEmoji(msg string) string {
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re := regexp.MustCompile(`:\w+:`)
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match := re.FindAll([]byte(msg), -1)
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if len(match) > 0 {
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s := msg
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for i := range match {
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s = strings.Replace(s, string(match[i]), "", -1)
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}
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return s
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} else {
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return msg
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}
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}
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func prepareTTSMessage(msg string) string {
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t1 := maxString(msg, 300)
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t2 := stripEmoji(t1)
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t3 := removeCharacters(t2, "-\"'`$();:.\\")
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return strings.Trim(t3, " ")
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}
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