gotosocial/internal/text/util.go

51 lines
1.6 KiB
Go

// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package text
import "unicode"
func isPlausiblyInHashtag(r rune) bool {
// Marks are allowed during parsing
// prior to normalization, but not after,
// since they may be combined into letters
// during normalization.
return unicode.IsMark(r) ||
isPermittedInHashtag(r)
}
func isPermittedInHashtag(r rune) bool {
return unicode.IsLetter(r) ||
unicode.IsNumber(r) ||
r == '_'
}
// isHashtagBoundary returns true if rune r
// is a recognized break character for before
// or after a #hashtag.
func isHashtagBoundary(r rune) bool {
return unicode.IsSpace(r) ||
(unicode.IsPunct(r) && r != '_')
}
// isMentionBoundary returns true if rune r
// is a recognized break character for before
// or after a @mention.
func isMentionBoundary(r rune) bool {
return unicode.IsSpace(r) ||
unicode.IsPunct(r)
}