1 files changed, 68 insertions, 63 deletions

diff --git a/src/chainparamsbase.cpp b/src/chainparamsbase.cpp
index 720e24c4a..c966683b7 100644
--- a/src/chainparamsbase.cpp
+++ b/src/chainparamsbase.cpp
@@ -1,97 +1,102 @@
 // Copyright (c) 2010 Satoshi Nakamoto
-// Copyright (c) 2009-2014 The Bitcoin developers
-// Distributed under the MIT/X11 software license, see the accompanying
+// Copyright (c) 2009-2015 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include "chainparamsbase.h"
 
-#include "assert.h"
+#include "tinyformat.h"
 #include "util.h"
 
-#include <boost/assign/list_of.hpp>
+#include <assert.h>
 
-using namespace boost::assign;
+const std::string CBaseChainParams::MAIN = "main";
+const std::string CBaseChainParams::TESTNET = "test";
+const std::string CBaseChainParams::REGTEST = "regtest";
 
-//
-// Main network
-//
+void AppendParamsHelpMessages(std::string& strUsage, bool debugHelp)
+{
+    strUsage += HelpMessageGroup(_("Chain selection options:"));
+    strUsage += HelpMessageOpt("-testnet", _("Use the test chain"));
+    if (debugHelp) {
+        strUsage += HelpMessageOpt("-regtest", "Enter regression test mode, which uses a special chain in which blocks can be solved instantly. "
+                                   "This is intended for regression testing tools and app development.");
+    }
+}
 
-class CBaseMainParams : public CBaseChainParams {
+/**
+ * Main network
+ */
+class CBaseMainParams : public CBaseChainParams
+{
 public:
-    CBaseMainParams() {
-        networkID = CBaseChainParams::MAIN;
+    CBaseMainParams()
+    {
         nRPCPort = 8332;
     }
 };
-static CBaseMainParams mainParams;
 
-//
-// Testnet (v3)
-//
-class CBaseTestNetParams : public CBaseMainParams {
+/**
+ * Testnet (v3)
+ */
+class CBaseTestNetParams : public CBaseChainParams
+{
 public:
-    CBaseTestNetParams() {
-        networkID = CBaseChainParams::TESTNET;
+    CBaseTestNetParams()
+    {
         nRPCPort = 18332;
         strDataDir = "testnet3";
     }
 };
-static CBaseTestNetParams testNetParams;
 
-//
-// Regression test
-//
-class CBaseRegTestParams : public CBaseTestNetParams {
+/*
+ * Regression test
+ */
+class CBaseRegTestParams : public CBaseChainParams
+{
 public:
-    CBaseRegTestParams() {
-        networkID = CBaseChainParams::REGTEST;
+    CBaseRegTestParams()
+    {
+        nRPCPort = 18443;
         strDataDir = "regtest";
     }
 };
-static CBaseRegTestParams regTestParams;
 
-static CBaseChainParams *pCurrentBaseParams = 0;
+static std::unique_ptr<CBaseChainParams> globalChainBaseParams;
 
-const CBaseChainParams &BaseParams() {
-    assert(pCurrentBaseParams);
-    return *pCurrentBaseParams;
+const CBaseChainParams& BaseParams()
+{
+    assert(globalChainBaseParams);
+    return *globalChainBaseParams;
 }
 
-void SelectBaseParams(CBaseChainParams::Network network) {
-    switch (network) {
-        case CBaseChainParams::MAIN:
-            pCurrentBaseParams = &mainParams;
-            break;
-        case CBaseChainParams::TESTNET:
-            pCurrentBaseParams = &testNetParams;
-            break;
-        case CBaseChainParams::REGTEST:
-            pCurrentBaseParams = &regTestParams;
-            break;
-        default:
-            assert(false && "Unimplemented network");
-            return;
-    }
+std::unique_ptr<CBaseChainParams> CreateBaseChainParams(const std::string& chain)
+{
+    if (chain == CBaseChainParams::MAIN)
+        return std::unique_ptr<CBaseChainParams>(new CBaseMainParams());
+    else if (chain == CBaseChainParams::TESTNET)
+        return std::unique_ptr<CBaseChainParams>(new CBaseTestNetParams());
+    else if (chain == CBaseChainParams::REGTEST)
+        return std::unique_ptr<CBaseChainParams>(new CBaseRegTestParams());
+    else
+        throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
 }
 
-bool SelectBaseParamsFromCommandLine() {
-    bool fRegTest = GetBoolArg("-regtest", false);
-    bool fTestNet = GetBoolArg("-testnet", false);
-
-    if (fTestNet && fRegTest) {
-        return false;
-    }
-
-    if (fRegTest) {
-        SelectBaseParams(CBaseChainParams::REGTEST);
-    } else if (fTestNet) {
-        SelectBaseParams(CBaseChainParams::TESTNET);
-    } else {
-        SelectBaseParams(CBaseChainParams::MAIN);
-    }
-    return true;
+void SelectBaseParams(const std::string& chain)
+{
+    globalChainBaseParams = CreateBaseChainParams(chain);
 }
 
-bool AreBaseParamsConfigured() {
-    return pCurrentBaseParams != NULL;
+std::string ChainNameFromCommandLine()
+{
+    bool fRegTest = gArgs.GetBoolArg("-regtest", false);
+    bool fTestNet = gArgs.GetBoolArg("-testnet", false);
+
+    if (fTestNet && fRegTest)
+        throw std::runtime_error("Invalid combination of -regtest and -testnet.");
+    if (fRegTest)
+        return CBaseChainParams::REGTEST;
+    if (fTestNet)
+        return CBaseChainParams::TESTNET;
+    return CBaseChainParams::MAIN;
 }