client: add Platform::term_printf

Platform::term_printf is a variant of printf that
on windows dynamically opens console in order to
have visible output during command line processing.

7 files changed, 133 insertions, 71 deletions

diff --git a/client/application.cpp b/client/application.cpp
index 1405c705..33cc9477 100644
--- a/client/application.cpp
+++ b/client/application.cpp
@@ -1448,7 +1448,8 @@ static inline int str_to_port(const char *str)
     return port;
 }
 
-bool Application::set_channels_security(CmdLineParser& parser, bool on, char *val)
+bool Application::set_channels_security(CmdLineParser& parser, bool on, char *val,
+                                        const char* arg0)
 {
     RedPeer::ConnectionOptions::Type option;
     option = (on) ? RedPeer::ConnectionOptions::CON_OP_SECURE :
@@ -1465,7 +1466,8 @@ bool Application::set_channels_security(CmdLineParser& parser, bool on, char *va
 
     if (!strcmp(val, "all")) {
         if ((val = parser.next_argument())) {
-            std::cout << "\"all\" is exclusive in secure-channels\n";
+            Platform::term_printf("%s: \"all\" is exclusive in secure-channels\n", arg0);
+            _exit_code = SPICEC_ERROR_CODE_INVALID_ARG;
             return false;
         }
         PeerConnectionOptMap::iterator iter = _peer_con_opt.begin();
@@ -1478,7 +1480,8 @@ bool Application::set_channels_security(CmdLineParser& parser, bool on, char *va
     do {
         ChannelsNamesMap::iterator iter = channels_names.find(val);
         if (iter == channels_names.end()) {
-            std::cout << "bad channel name \"" << val << "\" in secure-channels\n";
+            Platform::term_printf("%s: bad channel name \"%s\" in secure-channels\n", arg0, val);
+            _exit_code = SPICEC_ERROR_CODE_INVALID_ARG;
             return false;
         }
         _peer_con_opt[(*iter).second] = option;
@@ -1486,7 +1489,7 @@ bool Application::set_channels_security(CmdLineParser& parser, bool on, char *va
     return true;
 }
 
-bool Application::set_canvas_option(CmdLineParser& parser, char *val)
+bool Application::set_canvas_option(CmdLineParser& parser, char *val, const char* arg0)
 {
     typedef std::map< std::string, CanvasOption> CanvasNamesMap;
     CanvasNamesMap canvas_types;
@@ -1500,19 +1503,23 @@ bool Application::set_canvas_option(CmdLineParser& parser, char *val)
     canvas_types["gl_pbuff"] = CANVAS_OPTION_OGL_PBUFF;
 #endif
     _canvas_types.clear();
+
     do {
         CanvasNamesMap::iterator iter = canvas_types.find(val);
         if (iter == canvas_types.end()) {
-            std::cout << "bad canvas type \"" << val << "\"\n";
+            Platform::term_printf("%s: bad canvas type \"%s\"\n", arg0, val);
+            _exit_code = SPICEC_ERROR_CODE_INVALID_ARG;
             return false;
         }
         _canvas_types.resize(_canvas_types.size() + 1);
         _canvas_types[_canvas_types.size() - 1] = (*iter).second;
     } while ((val = parser.next_argument()));
+
     return true;
 }
 
-bool Application::set_enable_channels(CmdLineParser& parser, bool enable, char *val)
+bool Application::set_enable_channels(CmdLineParser& parser, bool enable, char *val,
+                                      const char* arg0)
 {
     typedef std::map< std::string, int> ChannelsNamesMap;
     ChannelsNamesMap channels_names;
@@ -1524,7 +1531,8 @@ bool Application::set_enable_channels(CmdLineParser& parser, bool enable, char *
 
     if (!strcmp(val, "all")) {
         if ((val = parser.next_argument())) {
-            std::cout << "\"all\" is exclusive\n";
+            Platform::term_printf("%s: \"all\" is exclusive\n", arg0);
+            _exit_code = SPICEC_ERROR_CODE_INVALID_ARG;
             return false;
         }
         for (unsigned int i = 0; i < _enabled_channels.size(); i++) {
@@ -1536,14 +1544,22 @@ bool Application::set_enable_channels(CmdLineParser& parser, bool enable, char *
     do {
         ChannelsNamesMap::iterator iter = channels_names.find(val);
         if (iter == channels_names.end()) {
-            std::cout << "bad channel name \"" << val << "\"\n";
+            Platform::term_printf("%s: bad channel name \"%s\"\n", arg0, val);
+            _exit_code = SPICEC_ERROR_CODE_INVALID_ARG;
             return false;
         }
         _enabled_channels[(*iter).second] = enable;
     } while ((val = parser.next_argument()));
+
     return true;
 }
 
+void Application::on_cmd_line_invalid_arg(const char* arg0, const char* what, const char* val)
+{
+    Platform::term_printf("%s: invalid %s value %s\n", arg0, what, val);
+    _exit_code = SPICEC_ERROR_CODE_INVALID_ARG;
+}
+
 bool Application::process_cmd_line(int argc, char** argv)
 {
     std::string host;
@@ -1616,16 +1632,14 @@ bool Application::process_cmd_line(int argc, char** argv)
             break;
         case SPICE_OPT_PORT: {
             if ((port = str_to_port(val)) == -1) {
-                std::cout << "invalid port " << val << "\n";
-                _exit_code = SPICEC_ERROR_CODE_INVALID_ARG;
+                on_cmd_line_invalid_arg(argv[0], "port", val);
                 return false;
             }
             break;
         }
         case SPICE_OPT_SPORT: {
             if ((sport = str_to_port(val)) == -1) {
-                std::cout << "invalid secure port " << val << "\n";
-                _exit_code = SPICEC_ERROR_CODE_INVALID_ARG;
+                on_cmd_line_invalid_arg(argv[0], "secure port", val);
                 return false;
             }
             break;
@@ -1633,8 +1647,7 @@ bool Application::process_cmd_line(int argc, char** argv)
         case SPICE_OPT_FULL_SCREEN:
             if (val) {
                 if (strcmp(val, "auto-conf")) {
-                    std::cout << "invalid full screen mode " << val << "\n";
-                    _exit_code = SPICEC_ERROR_CODE_INVALID_ARG;
+                    on_cmd_line_invalid_arg(argv[0], "full screen mode", val);
                     return false;
                 }
                 auto_display_res = true;
@@ -1645,33 +1658,27 @@ bool Application::process_cmd_line(int argc, char** argv)
             password = val;
             break;
         case SPICE_OPT_SECURE_CHANNELS:
-            if (!set_channels_security(parser, true, val)) {
+            if (!set_channels_security(parser, true, val, argv[0])) {
                 return false;
             }
             break;
         case SPICE_OPT_UNSECURE_CHANNELS:
-            if (!set_channels_security(parser, false, val)) {
+            if (!set_channels_security(parser, false, val, argv[0])) {
                 return false;
             }
             break;
         case SPICE_OPT_ENABLE_CHANNELS:
-            if (!set_enable_channels(parser, true, val)) {
-                std::cout << "invalid channels " << val << "\n";
-                _exit_code = SPICEC_ERROR_CODE_INVALID_ARG;
+            if (!set_enable_channels(parser, true, val, argv[0])) {
                 return false;
             }
             break;
         case SPICE_OPT_DISABLE_CHANNELS:
-            if (!set_enable_channels(parser, false, val)) {
-                std::cout << "invalid channels " << val << "\n";
-                _exit_code = SPICEC_ERROR_CODE_INVALID_ARG;
+            if (!set_enable_channels(parser, false, val, argv[0])) {
                 return false;
             }
             break;
         case SPICE_OPT_CANVAS_TYPE:
-            if (!set_canvas_option(parser, val)) {
-                std::cout << "invalid canvas option " << val << "\n";
-                _exit_code = SPICEC_ERROR_CODE_INVALID_ARG;
+            if (!set_canvas_option(parser, val, argv[0])) {
                 return false;
             }
             break;
@@ -1679,14 +1686,16 @@ bool Application::process_cmd_line(int argc, char** argv)
             parser.show_help();
             return false;
         case CmdLineParser::OPTION_ERROR:
+            _exit_code = SPICEC_ERROR_CODE_CMD_LINE_ERROR;
             return false;
         default:
-            throw Exception("cmd line error");
+            throw Exception("cmd line error", SPICEC_ERROR_CODE_CMD_LINE_ERROR);
         }
     }
 
     if (parser.is_set(SPICE_OPT_SECURE_CHANNELS) && !parser.is_set(SPICE_OPT_SPORT)) {
-        std::cout << "missing --secure-port\n";
+        Platform::term_printf("%s: missing --secure-port\n", argv[0]);
+        _exit_code = SPICEC_ERROR_CODE_CMD_LINE_ERROR;
         return false;
     }
 
@@ -1714,7 +1723,9 @@ bool Application::process_cmd_line(int argc, char** argv)
             (*iter).second = RedPeer::ConnectionOptions::CON_OP_SECURE;
             continue;
         }
-        std::cout << "missing --port or --sport\n";
+
+        Platform::term_printf("%s: missing --port or --sport\n", argv[0]);
+        _exit_code = SPICEC_ERROR_CODE_CMD_LINE_ERROR;
         return false;
     }
 
diff --git a/client/application.h b/client/application.h
index 3c0297ff..27701eb0 100644
--- a/client/application.h
+++ b/client/application.h
@@ -165,9 +165,10 @@ public:
     static int main(int argc, char** argv, const char* version_str);
 
 private:
-    bool set_channels_security(CmdLineParser& parser, bool on, char *val);
-    bool set_enable_channels(CmdLineParser& parser, bool enable, char *val);
-    bool set_canvas_option(CmdLineParser& parser, char *val);
+    bool set_channels_security(CmdLineParser& parser, bool on, char *val, const char* arg0);
+    bool set_enable_channels(CmdLineParser& parser, bool enable, char *val, const char* arg0);
+    bool set_canvas_option(CmdLineParser& parser, char *val, const char* arg0);
+    void on_cmd_line_invalid_arg(const char* arg0, const char* what, const char* val);
     bool process_cmd_line(int argc, char** argv);
     void abort();
     void init_scan_code(int index);
diff --git a/client/cmd_line_parser.cpp b/client/cmd_line_parser.cpp
index 65ae404a..caa4b034 100644
--- a/client/cmd_line_parser.cpp
+++ b/client/cmd_line_parser.cpp
@@ -344,7 +344,7 @@ int CmdLineParser::get_option(char** val)
         int name_pos = (opt_obj->type == REQUIRED_ARGUMENT) ? optind - 2 : optind - 1;
         std::string cmd_name(_argv[name_pos] + 2);
         if (cmd_name.find(opt_obj->name) != 0) {
-            std::cout << _argv[0] << ": invalid option '--" << cmd_name << "'\n";
+            Platform::term_printf("%s: invalid option '--%s'\n", _argv[0], cmd_name.c_str());
             return OPTION_ERROR;
         }
 #endif
@@ -360,11 +360,11 @@ int CmdLineParser::get_option(char** val)
     case -1: {
         *val = NULL;
         if (!_positional_args && optind != _argc) {
-            std::cout << _argv[0] << ": unexpected positional arguments\n";
+            Platform::term_printf("%s: unexpected positional arguments\n", _argv[0]);
             return OPTION_ERROR;
         }
         if ((opt_obj = find_missing_opt())) {
-            std::cout << _argv[0] << ": option --" << opt_obj->name << " is required\n";
+            Platform::term_printf("%s: option --%s is required\n", _argv[0], opt_obj->name.c_str());
             return OPTION_ERROR;
         }
         _done = true;
@@ -378,18 +378,19 @@ int CmdLineParser::get_option(char** val)
 #ifdef DISABLE_ABBREVIATE
             std::string cmd_name(_argv[optind - 1] + 2);
             if (cmd_name.find(opt_obj->name) != 0) {
-                std::cout << _argv[0] << ": invalid option '--" << cmd_name << "'\n";
+                Platform::term_printf("%s: invalid option '--%s'\n", _argv[0], cmd_name.c_str());
                 return OPTION_ERROR;
             }
 #endif
-            std::cout << _argv[0] << ": option --" << opt_obj->name << " requires an argument\n";
+            Platform::term_printf("%s: option --%s requires an argument\n",
+                                  _argv[0], opt_obj->name.c_str());
         } else if (optopt == 0) {
-            std::cout << _argv[0] << ": invalid option '" << _argv[optind - 1] << "'\n";
+            Platform::term_printf("%s: invalid option '%s'\n", _argv[0], _argv[optind - 1]);
         } else if ((opt_obj = find((char)optopt))) {
-            std::cout << _argv[0] << ": option '-" << opt_obj->short_name <<
-                "' requires an argument\n";
+            Platform::term_printf("%s: option '-%c' requires an argument\n",
+                                  _argv[0], opt_obj->short_name);
         } else {
-            std::cout << _argv[0] << ": invalid option '-" << char(optopt) << "'\n";
+            Platform::term_printf("%s: invalid option '-%c'\n", _argv[0], char(optopt));
         }
         return OPTION_ERROR;
     default:
@@ -447,13 +448,13 @@ void CmdLineParser::show_help()
 {
     static const int HELP_START_POS = 30;
     static const int HELP_WIDTH = 80 - HELP_START_POS;
+    std::ostringstream os;
 
-    std::cout << basename(_argv[0]) << " - " << _description.c_str() << "\n\noptions:\n\n";
+    os << basename(_argv[0]) << " - " << _description.c_str() << "\n\noptions:\n\n";
 
     Options::iterator iter = _options.begin();
     for (; iter != _options.end(); ++iter) {
         CmdLineParser::Option* opt = *iter;
-        std::ostringstream os;
 
         if (opt->short_name) {
             os << "  -" << opt->short_name << ", ";
@@ -516,9 +517,9 @@ void CmdLineParser::show_help()
                 line.clear();
             }
         } while (line.size() || std::getline(is, line));
-
-        std::cout << os.str();
     }
-    std::cout << "\n";
+
+    os << "\n";
+    Platform::term_printf(os.str().c_str());
 }
 
diff --git a/client/platform.h b/client/platform.h
index a36cdc50..50db1534 100644
--- a/client/platform.h
+++ b/client/platform.h
@@ -42,6 +42,7 @@ public:
     static void path_append(std::string& path, const std::string& partial_path);
     static uint64_t get_process_id();
     static uint64_t get_thread_id();
+    static void term_printf(const char* format, ...);
 
     static const MonitorsList& init_monitors();
     static void destroy_monitors();
diff --git a/client/windows/main.cpp b/client/windows/main.cpp
index a1575e90..afc98c97 100644
--- a/client/windows/main.cpp
+++ b/client/windows/main.cpp
@@ -22,12 +22,6 @@ extern "C" {
 #include "pthread.h"
 }
 
-//#define OPEN_CONSOLE
-#ifdef OPEN_CONSOLE
-#include <io.h>
-#include <conio.h>
-#endif
-
 #include "application.h"
 #include "debug.h"
 #include "utils.h"
@@ -83,23 +77,6 @@ int WINAPI WinMain(HINSTANCE hInstance,
 
     try {
         init_version_string();
-#ifdef OPEN_CONSOLE
-        AllocConsole();
-        HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE);
-        int hConHandle = _open_osfhandle((intptr_t)h, _O_TEXT);
-        FILE * fp = _fdopen(hConHandle, "w");
-        *stdout = *fp;
-
-        h = GetStdHandle(STD_INPUT_HANDLE);
-        hConHandle = _open_osfhandle((intptr_t)h, _O_TEXT);
-        fp = _fdopen(hConHandle, "r");
-        *stdin = *fp;
-
-        h = GetStdHandle(STD_ERROR_HANDLE);
-        hConHandle = _open_osfhandle((intptr_t)h, _O_TEXT);
-        fp = _fdopen(hConHandle, "w");
-        *stderr = *fp;
-#endif
         pthread_win32_process_attach_np();
         init_winsock();
         exit_val = Application::main(__argc, __argv, version_string);
@@ -114,11 +91,10 @@ int WINAPI WinMain(HINSTANCE hInstance,
         LOG_ERROR("unhandled exception");
         exit_val = SPICEC_ERROR_CODE_ERROR;
     }
+
     log4cpp::Category::shutdown();
-#ifdef OPEN_CONSOLE
-    _getch();
-#endif
     pthread_win32_process_detach_np();
+
     return exit_val;
 }
 
diff --git a/client/windows/platform.cpp b/client/windows/platform.cpp
index dcdb84e3..d5ff0f09 100644
--- a/client/windows/platform.cpp
+++ b/client/windows/platform.cpp
@@ -18,6 +18,8 @@
 #include "common.h"
 
 #include <shlobj.h>
+#include <io.h>
+#include <conio.h>
 
 #include "platform.h"
 #include "win_platform.h"
@@ -740,3 +742,65 @@ void WinPlatform::exit_modal_loop()
     KillTimer(paltform_win, MODAL_LOOP_TIMER_ID);
     modal_loop_active = false;
 }
+
+static bool has_console = false;
+
+static void create_console()
+{
+    static Mutex console_mutex;
+
+    Lock lock(console_mutex);
+
+    if (has_console) {
+        return;
+    }
+
+    AllocConsole();
+    HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE);
+    int hConHandle = _open_osfhandle((intptr_t)h, _O_TEXT);
+    FILE * fp = _fdopen(hConHandle, "w");
+    *stdout = *fp;
+
+    h = GetStdHandle(STD_INPUT_HANDLE);
+    hConHandle = _open_osfhandle((intptr_t)h, _O_TEXT);
+    fp = _fdopen(hConHandle, "r");
+    *stdin = *fp;
+
+    h = GetStdHandle(STD_ERROR_HANDLE);
+    hConHandle = _open_osfhandle((intptr_t)h, _O_TEXT);
+    fp = _fdopen(hConHandle, "w");
+    *stderr = *fp;
+
+    has_console = true;
+
+    HWND consol_window = GetConsoleWindow();
+
+    if (consol_window) {
+        SetForegroundWindow(consol_window);
+    }
+}
+
+class ConsoleWait {
+public:
+    ~ConsoleWait()
+    {
+        if (has_console) {
+            Platform::term_printf("\n\nPress any key to exit...");
+            _getch();
+        }
+    }
+
+} console_wait;
+
+
+void Platform::term_printf(const char* format, ...)
+{
+    if (!has_console) {
+        create_console();
+    }
+
+    va_list ap;
+    va_start(ap, format);
+    vprintf(format, ap);
+    va_end(ap);
+}
diff --git a/client/x11/platform.cpp b/client/x11/platform.cpp
index 1bedb225..bceae05a 100644
--- a/client/x11/platform.cpp
+++ b/client/x11/platform.cpp
@@ -252,6 +252,14 @@ void Platform::yield()
     pthread_yield();
 }
 
+void Platform::term_printf(const char* format, ...)
+{
+    va_list ap;
+    va_start(ap, format);
+    vprintf(format, ap);
+    va_end(ap);
+}
+
 void Platform::set_thread_priority(void* thread, Platform::ThreadPriority in_priority)
 {
     ASSERT(thread == NULL);