console ui implementation of generate

Author: hernanmarino

src/qt/rpcconsole.cpp

@@ -48,6 +48,7 @@
 #include <QVariant>
 
 #include <chrono>
+#include <regex>
 
 const int CONSOLE_HISTORY = 50;
 const int INITIAL_TRAFFIC_GRAPH_MINS = 30;
@@ -414,7 +415,34 @@ void RPCExecutor::request(const QString &command, const WalletModel* wallet_mode
     {
         std::string result;
         std::string executableCommand = command.toStdString() + "\n";
-
+        std::regex validRegex("generate\\s*[\\(]?\\s*(\\d+)?\\s*[,]?\\s*(\\d+)?\\s*[\\)]?\\s*");
+        std::regex invalidRegex("generate[\\s\\(]+.*");
+        std::smatch match;
+        if (std::regex_match(executableCommand, match, validRegex)) {
+            std::string nblocks=match[1];
+            std::string maxtries=match[2];
+            if (nblocks=="") nblocks = "1";
+            if (maxtries=="") maxtries = "1000000";
+            if (!RPCConsole::RPCExecuteCommandLine(m_node, result, "getnewaddress\n", nullptr, wallet_model)) {
+                Q_EMIT reply(RPCConsole::CMD_ERROR, QString("Parse error: unbalanced ' or \""));
+            }
+            else {
+                std::string address = result;
+                if (!RPCConsole::RPCExecuteCommandLine(m_node, result, "generatetoaddress " + nblocks + " " + address + " " + maxtries + "\n", nullptr, wallet_model)) {
+                    Q_EMIT reply(RPCConsole::CMD_ERROR, QString("Parse error: unbalanced ' or \""));
+                } else {
+                    std::string answer = "{\n  \"address\": \"" + address + "\",\n  \"blocks\": "+ result + "\n}";
+                    Q_EMIT reply(RPCConsole::CMD_REPLY, QString::fromStdString( "\n" + answer + "\n\n" ));
+                }
+            }
+            return;
+        }else {
+            //If the previous regex failed, but the following is valid  - i.e. starts with 'generate' - there is a syntax error with parameters
+            if (std::regex_search(executableCommand, match, invalidRegex)) {
+                Q_EMIT reply(RPCConsole::CMD_ERROR, QString("Parse error."));
+                return;
+            }
+        }
         // Catch the console-only-help command before RPC call is executed and reply with help text as-if a RPC reply.
         if(executableCommand == "help-console\n") {
             Q_EMIT reply(RPCConsole::CMD_REPLY, QString(("\n"