Sumner Evans
120 lines
3.8 KiB
Go
120 lines
3.8 KiB
Go
// mautrix-telegram - A Matrix-Telegram puppeting bridge.
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// Copyright (C) 2024 Sumner Evans
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package telegramfmt
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import (
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"fmt"
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"strings"
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"unicode/utf16"
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)
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func (m Mention) Format(message string) string {
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if m.Username != "" {
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return fmt.Sprintf(`<a href="%s">@%s</a>`, m.MXID.URI().MatrixToURL(), m.Username)
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} else {
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return fmt.Sprintf(`<a href="%s">%s</a>`, m.MXID.URI().MatrixToURL(), m.Name)
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}
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}
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func (s Style) Format(message string) string {
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switch s.Type {
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case StyleBold:
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return fmt.Sprintf("<strong>%s</strong>", message)
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case StyleItalic:
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return fmt.Sprintf("<em>%s</em>", message)
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case StyleSpoiler:
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return fmt.Sprintf("<span data-mx-spoiler>%s</span>", message)
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case StyleStrikethrough:
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return fmt.Sprintf("<del>%s</del>", message)
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case StyleCode:
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if strings.ContainsRune(message, '\n') {
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// This is somewhat incorrect, as it won't allow inline text before/after a multiline monospace-formatted string.
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return fmt.Sprintf("<pre><code>%s</code></pre>", message)
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}
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return fmt.Sprintf("<code>%s</code>", message)
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case StyleUnderline:
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return fmt.Sprintf("<u>%s</u>", message)
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case StyleBlockquote:
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return fmt.Sprintf("<blockquote>%s</blockquote>", message)
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case StylePre:
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if s.Language != "" {
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return fmt.Sprintf("<pre><code class='language-%s'>%s</code></pre>", s.Language, message)
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} else {
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return fmt.Sprintf("<pre><code>%s</code></pre>", message)
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}
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case StyleEmail:
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return fmt.Sprintf(`<a href='mailto:%s'>%s</a>`, message, message)
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case StyleTextURL:
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if strings.HasPrefix(s.URL, "https://matrix.to/#") {
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return s.URL
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}
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return fmt.Sprintf(`<a href='%s'>%s</a>`, s.URL, message)
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case StyleURL:
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if strings.HasPrefix(s.URL, "https://matrix.to/#") {
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return s.URL
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}
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return fmt.Sprintf(`<a href='%s'>%s</a>`, s.URL, message)
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case StyleCustomEmoji:
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if s.Emoji != "" {
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return s.Emoji
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} else {
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return fmt.Sprintf(
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`<img data-mx-emoticon data-mau-animated-emoji src="%s" height="32" width="32" alt="%s" title="%s"/>`,
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s.EmojiURI, message, message,
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)
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}
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case StyleBotCommand:
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return fmt.Sprintf("<font color='#3771bb'>%s</font>", message)
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case StyleHashtag:
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return fmt.Sprintf("<font color='#3771bb'>%s</font>", message)
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case StyleCashtag:
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return fmt.Sprintf("<font color='#3771bb'>%s</font>", message)
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case StylePhone:
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return fmt.Sprintf("<font color='#3771bb'>%s</font>", message)
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default:
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return message
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}
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}
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type UTF16String []uint16
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func NewUTF16String(s string) UTF16String {
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return utf16.Encode([]rune(s))
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}
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func (u UTF16String) String() string {
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return string(utf16.Decode(u))
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}
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func (lrt *LinkedRangeTree) Format(message UTF16String, ctx formatContext) string {
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if lrt == nil || lrt.Node == nil {
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return ctx.TextToHTML(message.String())
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}
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head := message[:lrt.Node.Start]
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headStr := ctx.TextToHTML(head.String())
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inner := message[lrt.Node.Start:lrt.Node.End()]
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tail := message[lrt.Node.End():]
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ourCtx := ctx
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if lrt.Node.Value.IsCode() {
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ourCtx.IsInCodeblock = true
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}
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childMessage := lrt.Child.Format(inner, ourCtx)
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formattedChildMessage := lrt.Node.Value.Format(childMessage)
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siblingMessage := lrt.Sibling.Format(tail, ctx)
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return headStr + formattedChildMessage + siblingMessage
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}
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