actions: Made --help a global option and added handling to each of …

…the action handlers for it

src/actions.cxx

@@ -10,6 +10,7 @@
 #include <substrate/console>
 #include <substrate/units>
 #include "actions.hxx"
+#include "options.hxx"
 #include "flashVendors.hxx"
 #include "sfdp.hxx"
 #include "provisionELF.hxx"
@@ -181,6 +182,12 @@ namespace bmpflash
 
 	bool displaySFDP(const usbDevice_t &device, const arguments_t &sfdpArguments)
 	{
+		// Check if help was asked for and handle that if it was
+		if (sfdpArguments["help"sv])
+		{
+			sfdpOptions.displayHelp();
+			return true;
+		}
 		// Try to begin communications with the BMP
 		auto probe{beginComms(device, std::get<flag_t>(*sfdpArguments["bus"sv]))};
 		// If we got good comms, then try and identify the Flash
@@ -194,6 +201,12 @@ namespace bmpflash
 
 	bool provision(const usbDevice_t &device, const arguments_t &provisionArguments)
 	{
+		// Check if help was asked for and handle that if it was
+		if (provisionArguments["help"sv])
+		{
+			provisioningOptions.displayHelp();
+			return true;
+		}
 		// Try to begin communications with the BMP
 		auto probe{beginComms(device, spiBus_t::internal)};
 		// If we got good comms, then try and identify the Flash
@@ -222,6 +235,12 @@ namespace bmpflash
 
 	bool read(const usbDevice_t &device, const arguments_t &readArguments)
 	{
+		// Check if help was asked for and handle that if it was
+		if (readArguments["help"sv])
+		{
+			generalFlashOptions.displayHelp();
+			return true;
+		}
 		// Try to begin communications with the BMP
 		auto probe{beginComms(device, std::get<flag_t>(*readArguments["bus"sv]))};
 		// If we got good comms, then try and identify the Flash
@@ -269,6 +288,12 @@ namespace bmpflash
 
 	bool write(const usbDevice_t &device, const arguments_t &writeArguments)
 	{
+		// Check if help was asked for and handle that if it was
+		if (writeArguments["help"sv])
+		{
+			generalFlashOptions.displayHelp();
+			return true;
+		}
 		// Try to begin communications with the BMP
 		auto probe{beginComms(device, std::get<flag_t>(*writeArguments["bus"sv]))};
 		// If we got good comms, then try and identify the Flash

src/include/options.hxx

@@ -111,7 +111,8 @@ namespace bmpflash
 	{
 		options
 		(
-			option_t{optionFlagPair_t{"-h"sv, "--help"sv}, "Display this help message and exit"sv}.exclusive(),
+			option_t{optionFlagPair_t{"-h"sv, "--help"sv}, "Display this help message and exit"sv}
+				.exclusive().global(),
 			option_t{"--version"sv, "Display the program version information and exit"sv}.exclusive(),
 			option_t{optionFlagPair_t{"-v"sv, "--verbosity"sv}, "Set the program output verbosity"sv}
 				.takesParameter(optionValueType_t::unsignedInt).valueRange(0U, 1U),