From 68654179e99645198b24e78b00676ff0ada7dc63 Mon Sep 17 00:00:00 2001
From: apprb <apprb@users.noreply.github.com>
Date: Sun, 21 Sep 2014 17:30:10 +0700
Subject: [PATCH] Split message

---
 core.cpp    | 46 +++++++++++++++++++++++++++++++++++++++++-----
 core.h      |  3 +++
 cstring.cpp | 19 ++++++++++++++++---
 cstring.h   |  3 +++
 4 files changed, 63 insertions(+), 8 deletions(-)

diff --git a/core.cpp b/core.cpp
index fe1e3187b..c37c78146 100644
--- a/core.cpp
+++ b/core.cpp
@@ -34,6 +34,7 @@
 #include <QTimer>
 #include <QCoreApplication>
 #include <QDateTime>
+#include <QList>
 
 const QString Core::CONFIG_FILE_NAME = "data";
 QList<ToxFile> Core::fileSendQueue;
@@ -473,10 +474,13 @@ void Core::requestFriendship(const QString& friendAddress, const QString& messag
 
 void Core::sendMessage(int friendId, const QString& message)
 {
-    CString cMessage(message);
+    QList<CString> cMessages = splitMessage(message);
 
-    int messageId = tox_send_message(tox, friendId, cMessage.data(), cMessage.size());
-    emit messageSentResult(friendId, message, messageId);
+    for (auto &cMsg :cMessages)
+    {
+        int messageId = tox_send_message(tox, friendId, cMsg.data(), cMsg.size());
+        emit messageSentResult(friendId, message, messageId);
+    }
 }
 
 void Core::sendAction(int friendId, const QString &action)
@@ -495,9 +499,12 @@ void Core::sendTyping(int friendId, bool typing)
 
 void Core::sendGroupMessage(int groupId, const QString& message)
 {
-    CString cMessage(message);
+    QList<CString> cMessages = splitMessage(message);
 
-    tox_group_message_send(tox, groupId, cMessage.data(), cMessage.size());
+    for (auto &cMsg :cMessages)
+    {
+        tox_group_message_send(tox, groupId, cMsg.data(), cMsg.size());
+    }
 }
 
 void Core::sendFile(int32_t friendId, QString Filename, QString FilePath, long long filesize)
@@ -1159,3 +1166,32 @@ QString Core::getFriendAddress(int friendNumber) const
 
     return id;
 }
+
+QList<CString> Core::splitMessage(const QString &message)
+{
+    QList<CString> splittedMsgs;
+    QByteArray ba_message(message.toUtf8());
+
+    while (ba_message.size() > TOX_MAX_MESSAGE_LENGTH)
+    {
+        int splitPos = ba_message.lastIndexOf(' ', TOX_MAX_MESSAGE_LENGTH - 1);
+        if (splitPos <= 0)
+        {
+            splitPos = TOX_MAX_MESSAGE_LENGTH;
+            if (ba_message[splitPos] & 0x80)
+            {
+                do {
+                    splitPos--;
+                } while (!(ba_message[splitPos] & 0x40));
+            }
+            splitPos--;
+        }
+
+        splittedMsgs.push_back(CString(ba_message.left(splitPos + 1)));
+        ba_message = ba_message.mid(splitPos + 1);
+    }
+
+    splittedMsgs.push_back(CString(ba_message));
+
+    return splittedMsgs;
+}
diff --git a/core.h b/core.h
index 13d051017..706f448a3 100644
--- a/core.h
+++ b/core.h
@@ -28,6 +28,7 @@ template <typename T> class QList;
 class Camera;
 class QTimer;
 class QString;
+class CString;
 
 class Core : public QObject
 {
@@ -210,6 +211,8 @@ private:
 
     void checkLastOnline(int friendId);
 
+    QList<CString> splitMessage(const QString &message);
+
 private slots:
      void onFileTransferFinished(ToxFile file);
 
diff --git a/cstring.cpp b/cstring.cpp
index 6d7815e9c..b9217fbc8 100644
--- a/cstring.cpp
+++ b/cstring.cpp
@@ -17,10 +17,23 @@
 #include "cstring.h"
 #include <QString>
 
-CString::CString(const QString& string)
+CString::CString(const QString& string) :
+    CString(string.toUtf8())
 {
-    cString = new uint8_t[string.length() * MAX_SIZE_OF_UTF8_ENCODED_CHARACTER]();
-    cStringSize = fromString(string, cString);
+}
+
+CString::CString(const QByteArray& ba_string)
+{
+    cString = new uint8_t[ba_string.size()]();
+    cStringSize = ba_string.size();
+    memcpy(cString, reinterpret_cast<const uint8_t*>(ba_string.data()), cStringSize);
+}
+
+CString::CString(const CString &cstr)
+{
+    cStringSize = cstr.cStringSize;
+    cString = new uint8_t[cStringSize]();
+    memcpy(cString, cstr.cString, cStringSize);
 }
 
 CString::~CString()
diff --git a/cstring.h b/cstring.h
index a75ed6468..818c79bc8 100644
--- a/cstring.h
+++ b/cstring.h
@@ -20,11 +20,14 @@
 #include <cstdint>
 
 class QString;
+class QByteArray;
 
 class CString
 {
 public:
     explicit CString(const QString& string);
+    explicit CString(const QByteArray& ba_string);
+    explicit CString(const CString& cstr);
     ~CString();
 
     uint8_t* data();