telepathy-qt: Message::text(): Omit parts with non-empty 'interface' key value

[Alexandr Akulich]

Module: telepathy-qt
Branch: master
Commit: 0c98675c97cd0d4e48293d7281f7150ecdf7f93d
URL:    http://cgit.freedesktop.org/telepathy/telepathy-qt/commit/?id=0c98675c97cd0d4e48293d7281f7150ecdf7f93d

Author: Alexander Akulich <akulichalexander at gmail.com>
Date:   Sat May  5 01:59:04 2018 +0300

Message::text(): Omit parts with non-empty 'interface' key value

The specification says that parts with a specified, but unsupported
interface should be ignored. This is needed to let a CM to specify
a preferred text/plain alternative for a specially-formatted text,
such as quotes.

---

 TelepathyQt/message.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/TelepathyQt/message.cpp b/TelepathyQt/message.cpp
index 6994028c..a10fcac6 100644
--- a/TelepathyQt/message.cpp
+++ b/TelepathyQt/message.cpp
@@ -379,6 +379,10 @@ QString Message::text() const
         const QString contentType = stringOrEmptyFromPart(mPriv->parts, i, "content-type");
 
         if (contentType == QLatin1String("text/plain")) {
+            const QString interface = valueFromPart(mPriv->parts, i, "interface").toString();
+            if (!interface.isEmpty()) {
+                continue;
+            }
             const QString altGroup = stringOrEmptyFromPart(mPriv->parts, i, "alternative");
             if (!altGroup.isEmpty()) {
                 if (altGroupsUsed.contains(altGroup)) {