[2700] Fix issue where the cmd line switches are printed as ASCII codes.

tests/tools/perfdhcp/command_options.cc

-// Copyright (C) 2012 Internet Systems Consortium, Inc. ("ISC")
+// Copyright (C) 2012-2013 Internet Systems Consortium, Inc. ("ISC")
 //
 // Permission to use, copy, modify, and/or distribute this software for any
 // purpose with or without fee is hereby granted, provided that the above
@@ -87,7 +87,7 @@ CommandOptions::reset() {
 }
 
 bool
-CommandOptions::parse(int argc, char** const argv) {
+CommandOptions::parse(int argc, char** const argv, bool print_cmd_line) {
     // Reset internal variables used by getopt
     // to eliminate undefined behavior when
     // parsing different command lines multiple times
@@ -125,7 +125,7 @@ CommandOptions::parse(int argc, char** const argv) {
     reset();
 
     // Informs if program has been run with 'h' or 'v' option.
-    bool help_or_version_mode = initialize(argc, argv);
+    bool help_or_version_mode = initialize(argc, argv, print_cmd_line);
     if (!help_or_version_mode) {
         validate();
     }
@@ -133,7 +133,7 @@ CommandOptions::parse(int argc, char** const argv) {
 }
 
 bool
-CommandOptions::initialize(int argc, char** argv) {
+CommandOptions::initialize(int argc, char** argv, bool print_cmd_line) {
     int opt = 0;                // Subsequent options returned by getopt()
     std::string drop_arg;       // Value of -D<value>argument
     size_t percent_loc = 0;     // Location of % sign in -D<value>
@@ -151,10 +151,10 @@ CommandOptions::initialize(int argc, char** argv) {
     // they will be tuned and validated elsewhere
     while((opt = getopt(argc, argv, "hv46r:t:R:b:n:p:d:D:l:P:a:L:"
                         "s:iBc1T:X:O:E:S:I:x:w:")) != -1) {
-        stream << " -" << opt;
+        stream << " -" << static_cast<char>(opt);
         if (optarg) {
             stream << " " << optarg;
-        }  
+        }
         switch (opt) {
         case '1':
             use_first_ = true;
@@ -416,7 +416,9 @@ CommandOptions::initialize(int argc, char** argv) {
         }
     }
 
-    std::cout << "Running: " << stream.str() << std::endl;
+    if (print_cmd_line) {
+        std::cout << "Running: " << stream.str() << std::endl;
+    }
 
     // Handle the local '-l' address/interface
     if (!localname_.empty()) {

tests/tools/perfdhcp/command_options.h

-// Copyright (C) 2012 Internet Systems Consortium, Inc. ("ISC")
+// Copyright (C) 2012-2013 Internet Systems Consortium, Inc. ("ISC")
 //
 // Permission to use, copy, modify, and/or distribute this software for any
 // purpose with or without fee is hereby granted, provided that the above
@@ -56,9 +56,10 @@ public:
     ///
     /// \param argc Argument count passed to main().
     /// \param argv Argument value array passed to main().
+    /// \param print_cmd_line Print the command line being run to the console.
     /// \throws isc::InvalidParameter if parse fails.
     /// \return true if program has been run in help or version mode ('h' or 'v' flag).
-    bool parse(int argc, char** const argv);
+    bool parse(int argc, char** const argv, bool print_cmd_line = false);
 
     /// \brief Returns IP version.
     ///
@@ -261,9 +262,10 @@ private:
     ///
     /// \param argc Argument count passed to main().
     /// \param argv Argument value array passed to main().
+    /// \param print_cmd_line Print the command line being run to the console.
     /// \throws isc::InvalidParameter if command line options initialization fails.
     /// \return true if program has been run in help or version mode ('h' or 'v' flag).
-    bool initialize(int argc, char** argv);
+    bool initialize(int argc, char** argv, bool print_cmd_line);
 
     /// \brief Validates initialized options.
     ///

tests/tools/perfdhcp/main.cc

-// Copyright (C) 2012  Internet Systems Consortium, Inc. ("ISC")
+// Copyright (C) 2012-2013  Internet Systems Consortium, Inc. ("ISC")
 //
 // Permission to use, copy, modify, and/or distribute this software for any
 // purpose with or without fee is hereby granted, provided that the above
@@ -32,7 +32,11 @@ main(int argc, char* argv[]) {
         // If parser returns true it means that user specified
         // 'h' or 'v' command line option. Program shows the
         // help or version message and exits here.
-        if (command_options.parse(argc, argv)) {
+        // The third argument indicates that the command line
+        // should be printed when it gets parsed. This is useful
+        // in particular when the command line needs to be
+        // extracted from the log file.
+        if (command_options.parse(argc, argv, true)) {
             return (ret_code);
         }
     } catch(isc::Exception& e) {