onedeuxtriseigo.nullpo.dev
A privacy-first, self-hosted, fully open source personal knowledge management software, written in typescript and golang. (PERSONAL FORK)
1// SiYuan - Refactor your thinking
2// Copyright (c) 2020-present, b3log.org
3//
4// This program is free software: you can redistribute it and/or modify
5// it under the terms of the GNU Affero General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// This program is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU Affero General Public License for more details.
13//
14// You should have received a copy of the GNU Affero General Public License
15// along with this program. If not, see <https://www.gnu.org/licenses/>.
16
17package treenode
18
19import (
20 "github.com/88250/gulu"
21 "github.com/88250/lute/lex"
22)
23
24func ContainsMarker(str string) (ret string) {
25 if !gulu.Str.IsASCII(str) {
26 return
27 }
28
29 for _, token := range str {
30 if IsMarker(byte(token)) {
31 return string(token)
32 }
33 }
34 return
35}
36
37func IsMarker(token byte) bool {
38 switch token {
39 case lex.ItemAsterisk, lex.ItemUnderscore, lex.ItemOpenBracket, lex.ItemCloseBracket, lex.ItemNewline,
40 lex.ItemBang, lex.ItemBackslash, lex.ItemBacktick, lex.ItemLess, lex.ItemGreater,
41 lex.ItemAmpersand, lex.ItemTilde, lex.ItemDollar, lex.ItemOpenBrace, lex.ItemCloseBrace,
42 lex.ItemOpenParen, lex.ItemCloseParen, lex.ItemEqual, lex.ItemCrosshatch:
43 return true
44 case lex.ItemCaret:
45 return true
46 default:
47 return false
48 }
49}