diff --git a/bridge/telegram/telegram.go b/bridge/telegram/telegram.go index db3ab323..b179dd6d 100644 --- a/bridge/telegram/telegram.go +++ b/bridge/telegram/telegram.go @@ -1,10 +1,14 @@ package btelegram import ( + "bytes" + "html" + "strconv" + "github.com/42wim/matterbridge/bridge/config" log "github.com/Sirupsen/logrus" "github.com/go-telegram-bot-api/telegram-bot-api" - "strconv" + "github.com/russross/blackfriday" ) type Btelegram struct { @@ -51,13 +55,70 @@ func (b *Btelegram) JoinChannel(channel string) error { return nil } +type customHtml struct { + blackfriday.Renderer +} + +func (options *customHtml) Paragraph(out *bytes.Buffer, text func() bool) { + marker := out.Len() + + if !text() { + out.Truncate(marker) + return + } + out.WriteString("\n") +} + +func (options *customHtml) BlockCode(out *bytes.Buffer, text []byte, lang string) { + out.WriteString("
")
+
+ out.WriteString(html.EscapeString(string(text)))
+ out.WriteString("\n")
+}
+
+func (options *customHtml) Header(out *bytes.Buffer, text func() bool, level int, id string) {
+ options.Paragraph(out, text)
+}
+
+func (options *customHtml) HRule(out *bytes.Buffer) {
+ out.WriteByte('\n')
+}
+
+func (options *customHtml) BlockQuote(out *bytes.Buffer, text []byte) {
+ out.WriteString("> ")
+ out.Write(text)
+ out.WriteByte('\n')
+}
+
+func (options *customHtml) List(out *bytes.Buffer, text func() bool, flags int) {
+ options.Paragraph(out, text)
+}
+
+func (options *customHtml) ListItem(out *bytes.Buffer, text []byte, flags int) {
+ out.WriteString("- ")
+ out.Write(text)
+ out.WriteByte('\n')
+}
+
func (b *Btelegram) Send(msg config.Message) error {
flog.Debugf("Receiving %#v", msg)
chatid, err := strconv.ParseInt(msg.Channel, 10, 64)
if err != nil {
return err
}
- m := tgbotapi.NewMessage(chatid, msg.Username + msg.Text)
+
+ parsed := blackfriday.Markdown([]byte(msg.Text),
+ &customHtml{blackfriday.HtmlRenderer(blackfriday.HTML_USE_XHTML|blackfriday.HTML_SKIP_IMAGES, "", "")},
+ blackfriday.EXTENSION_NO_INTRA_EMPHASIS|
+ blackfriday.EXTENSION_FENCED_CODE|
+ blackfriday.EXTENSION_AUTOLINK|
+ blackfriday.EXTENSION_SPACE_HEADERS|
+ blackfriday.EXTENSION_HEADER_IDS|
+ blackfriday.EXTENSION_BACKSLASH_LINE_BREAK|
+ blackfriday.EXTENSION_DEFINITION_LISTS)
+
+ m := tgbotapi.NewMessage(chatid, msg.Username+string(parsed))
+ m.ParseMode = "HTML"
_, err = b.c.Send(m)
return err
}
@@ -69,6 +130,5 @@ func (b *Btelegram) handleRecv(updates <-chan tgbotapi.Update) {
}
flog.Debugf("Sending message from %s on %s to gateway", update.Message.From.UserName, b.Account)
b.Remote <- config.Message{Username: update.Message.From.UserName, Text: update.Message.Text, Channel: strconv.FormatInt(update.Message.Chat.ID, 10), Account: b.Account}
-
}
}