set/get preferred spam language

src/bitcoinrpc.cpp

@@ -256,6 +256,8 @@ static const CRPCCommand vRPCCommands[] =
     { "getmentions",            &getmentions,            false,     true,       false },
     { "setspammsg",             &setspammsg,             false,     false,      false },
     { "getspammsg",             &getspammsg,             false,     false,      false },
+    { "setpreferredspamlang",   &setpreferredspamlang,   false,     false,      false },
+    { "getpreferredspamlang",   &getpreferredspamlang,   false,     false,      false },
     { "follow",                 &follow,                 false,     true,       false },
     { "unfollow",               &unfollow,               false,     true,       false },
     { "getfollowing",           &getfollowing,           false,     true,       false },

src/bitcoinrpc.h

@@ -209,6 +209,8 @@ extern json_spirit::Value getdirectmsgs(const json_spirit::Array& params, bool f
 extern json_spirit::Value getmentions(const json_spirit::Array& params, bool fHelp);
 extern json_spirit::Value setspammsg(const json_spirit::Array& params, bool fHelp);
 extern json_spirit::Value getspammsg(const json_spirit::Array& params, bool fHelp);
+extern json_spirit::Value setpreferredspamlang(const json_spirit::Array& params, bool fHelp);
+extern json_spirit::Value getpreferredspamlang(const json_spirit::Array& params, bool fHelp);
 extern json_spirit::Value follow(const json_spirit::Array& params, bool fHelp);
 extern json_spirit::Value unfollow(const json_spirit::Array& params, bool fHelp);
 extern json_spirit::Value getfollowing(const json_spirit::Array& params, bool fHelp);

src/twister.cpp

@@ -1490,7 +1490,7 @@ void receivedSpamMessage(std::string const &message, std::string const &user)
 {
     LOCK(cs_spamMsg);
     bool hasSingleLangCode = (message.find("[") == message.rfind("["));
-    bool hasPreferredLang  = m_preferredSpamLang.length();
+    bool hasPreferredLang  = m_preferredSpamLang.length() > 2;
     bool isSameLang        = hasPreferredLang && hasSingleLangCode &&
                              message.find(m_preferredSpamLang) != string::npos;
     bool currentlyEmpty    = !m_receivedSpamMsgStr.length();
@@ -2325,6 +2325,38 @@ Value getspammsg(const Array& params, bool fHelp)
     return ret;
 }
 
+Value setpreferredspamlang(const Array& params, bool fHelp)
+{
+    if (fHelp || (params.size() != 1))
+        throw runtime_error(
+            "setpreferredspamlang <langcode>\n"
+            "Set preferred spam language (or 'none')");
+
+    string strLangCode = params[0].get_str();
+
+    if (strLangCode == "none") {
+        m_preferredSpamLang = "[]";
+    } else {
+        if( strLangCode.find("[") == string::npos ) {
+            m_preferredSpamLang = "[" + strLangCode + "]";
+        } else {
+            m_preferredSpamLang = strLangCode;
+        }
+    }
+
+    return Value();
+}
+
+Value getpreferredspamlang(const Array& params, bool fHelp)
+{
+    if (fHelp || (params.size() != 0))
+        throw runtime_error(
+            "getpreferredspamlang\n"
+            "get preferred spam language");
+
+    return Value(m_preferredSpamLang);
+}
+
 Value follow(const Array& params, bool fHelp)
 {
     if (fHelp || (params.size() != 2))