mirror of https://github.com/mautrix/go.git
52 lines
1.5 KiB
Go
52 lines
1.5 KiB
Go
// Copyright (c) 2024 Tulir Asokan
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package event
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import (
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"regexp"
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"strings"
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"maunium.net/go/mautrix/id"
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)
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var HTMLReplyFallbackRegex = regexp.MustCompile(`^<mx-reply>[\s\S]+?</mx-reply>`)
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func TrimReplyFallbackHTML(html string) string {
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return HTMLReplyFallbackRegex.ReplaceAllString(html, "")
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}
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func TrimReplyFallbackText(text string) string {
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if (!strings.HasPrefix(text, "> <") && !strings.HasPrefix(text, "> * <")) || !strings.Contains(text, "\n") {
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return text
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}
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lines := strings.Split(text, "\n")
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for len(lines) > 0 && strings.HasPrefix(lines[0], "> ") {
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lines = lines[1:]
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}
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return strings.TrimSpace(strings.Join(lines, "\n"))
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}
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func (content *MessageEventContent) RemoveReplyFallback() {
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if len(content.RelatesTo.GetReplyTo()) > 0 && !content.replyFallbackRemoved {
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if content.Format == FormatHTML {
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content.FormattedBody = TrimReplyFallbackHTML(content.FormattedBody)
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}
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content.Body = TrimReplyFallbackText(content.Body)
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content.replyFallbackRemoved = true
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}
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}
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// Deprecated: RelatesTo methods are nil-safe, so RelatesTo.GetReplyTo can be used directly
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func (content *MessageEventContent) GetReplyTo() id.EventID {
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return content.RelatesTo.GetReplyTo()
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}
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func (content *MessageEventContent) SetReply(inReplyTo *Event) {
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content.RelatesTo = (&RelatesTo{}).SetReplyTo(inReplyTo.ID)
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}
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