Process help and version arguments before datadir.

src/bitcoin-cli.cpp

@@ -66,6 +66,20 @@ static bool AppInitRPC(int argc, char* argv[])
     // Parameters
     //
     ParseParameters(argc, argv);
+    if (argc<2 || mapArgs.count("-?") || mapArgs.count("-help") || mapArgs.count("-version")) {
+        std::string strUsage = _("Bitcoin Core RPC client version") + " " + FormatFullVersion() + "\n";
+        if (!mapArgs.count("-version")) {
+            strUsage += "\n" + _("Usage:") + "\n" +
+                  "  bitcoin-cli [options] <command> [params]  " + _("Send command to Bitcoin Core") + "\n" +
+                  "  bitcoin-cli [options] help                " + _("List commands") + "\n" +
+                  "  bitcoin-cli [options] help <command>      " + _("Get help for a command") + "\n";
+
+            strUsage += "\n" + HelpMessageCli();
+        }
+
+        fprintf(stdout, "%s", strUsage.c_str());
+        return false;
+    }
     if (!boost::filesystem::is_directory(GetDataDir(false))) {
         fprintf(stderr, "Error: Specified data directory \"%s\" does not exist.\n", mapArgs["-datadir"].c_str());
         return false;
@@ -81,20 +95,6 @@ static bool AppInitRPC(int argc, char* argv[])
         fprintf(stderr, "Error: Invalid combination of -regtest and -testnet.\n");
         return false;
     }
-    if (argc<2 || mapArgs.count("-?") || mapArgs.count("-help") || mapArgs.count("-version")) {
-        std::string strUsage = _("Bitcoin Core RPC client version") + " " + FormatFullVersion() + "\n";
-        if (!mapArgs.count("-version")) {
-            strUsage += "\n" + _("Usage:") + "\n" +
-                  "  bitcoin-cli [options] <command> [params]  " + _("Send command to Bitcoin Core") + "\n" +
-                  "  bitcoin-cli [options] help                " + _("List commands") + "\n" +
-                  "  bitcoin-cli [options] help <command>      " + _("Get help for a command") + "\n";
-
-            strUsage += "\n" + HelpMessageCli();
-        }
-
-        fprintf(stdout, "%s", strUsage.c_str());
-        return false;
-    }
     return true;
 }
 

src/bitcoind.cpp

@@ -59,31 +59,14 @@ bool AppInit(int argc, char* argv[])
     boost::thread* detectShutdownThread = NULL;
 
     bool fRet = false;
-    try
-    {
+
     //
     // Parameters
     //
     // If Qt is used, parameters/bitcoin.conf are parsed in qt/bitcoin.cpp's main()
     ParseParameters(argc, argv);
-        if (!boost::filesystem::is_directory(GetDataDir(false)))
-        {
-            fprintf(stderr, "Error: Specified data directory \"%s\" does not exist.\n", mapArgs["-datadir"].c_str());
-            return false;
-        }
-        try
-        {
-            ReadConfigFile(mapArgs, mapMultiArgs);
-        } catch(std::exception &e) {
-            fprintf(stderr,"Error reading configuration file: %s\n", e.what());
-            return false;
-        }
-        // Check for -testnet or -regtest parameter (Params() calls are only valid after this clause)
-        if (!SelectParamsFromCommandLine()) {
-            fprintf(stderr, "Error: Invalid combination of -regtest and -testnet.\n");
-            return false;
-        }
 
+    // Process help and version before taking care about datadir
     if (mapArgs.count("-?") || mapArgs.count("-help") || mapArgs.count("-version"))
     {
         std::string strUsage = _("Bitcoin Core Daemon") + " " + _("version") + " " + FormatFullVersion() + "\n";
@@ -104,6 +87,26 @@ bool AppInit(int argc, char* argv[])
         return false;
     }
 
+    try
+    {
+        if (!boost::filesystem::is_directory(GetDataDir(false)))
+        {
+            fprintf(stderr, "Error: Specified data directory \"%s\" does not exist.\n", mapArgs["-datadir"].c_str());
+            return false;
+        }
+        try
+        {
+            ReadConfigFile(mapArgs, mapMultiArgs);
+        } catch(std::exception &e) {
+            fprintf(stderr,"Error reading configuration file: %s\n", e.what());
+            return false;
+        }
+        // Check for -testnet or -regtest parameter (Params() calls are only valid after this clause)
+        if (!SelectParamsFromCommandLine()) {
+            fprintf(stderr, "Error: Invalid combination of -regtest and -testnet.\n");
+            return false;
+        }
+
         // Command-line RPC
         bool fCommandLine = false;
         for (int i = 1; i < argc; i++)