mirror of https://github.com/go-gitea/gitea
55 lines
1.2 KiB
Go
55 lines
1.2 KiB
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package util
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import (
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"strings"
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"unicode/utf8"
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)
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// in UTF8 "…" is 3 bytes so doesn't really gain us anything...
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const (
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utf8Ellipsis = "…"
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asciiEllipsis = "..."
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)
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// SplitStringAtByteN splits a string at byte n accounting for rune boundaries. (Combining characters are not accounted for.)
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func SplitStringAtByteN(input string, n int) (left, right string) {
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if len(input) <= n {
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return input, ""
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}
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if !utf8.ValidString(input) {
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if n-3 < 0 {
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return input, ""
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}
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return input[:n-3] + asciiEllipsis, asciiEllipsis + input[n-3:]
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}
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end := 0
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for end <= n-3 {
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_, size := utf8.DecodeRuneInString(input[end:])
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if end+size > n-3 {
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break
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}
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end += size
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}
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return input[:end] + utf8Ellipsis, utf8Ellipsis + input[end:]
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}
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// SplitTrimSpace splits the string at given separator and trims leading and trailing space
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func SplitTrimSpace(input, sep string) []string {
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// replace CRLF with LF
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input = strings.ReplaceAll(input, "\r\n", "\n")
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var stringList []string
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for _, s := range strings.Split(input, sep) {
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// trim leading and trailing space
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stringList = append(stringList, strings.TrimSpace(s))
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}
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return stringList
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}
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