Implemented libidentify support

- see https://github.com/janwilmans/LibIdentify

include/catch_session.hpp

@@ -134,6 +134,14 @@ namespace Catch {
             m_cli.usage( Catch::cout(), processName );
             Catch::cout() << "For more detail usage please see the project docs\n" << std::endl;
         }
+        void libIdentify( std::string const& processName ) {
+            Catch::cout()
+                    << std::left << std::setw(16) << "description: " << "A Catch test executable\n"
+                    << std::left << std::setw(16) << "category: " << "testframework\n"
+                    << std::left << std::setw(16) << "framework: " << "Catch Test\n"
+                    << std::left << std::setw(16) << "version: " << libraryVersion() << std::endl;
+        }
+
 
         int applyCommandLine( int argc, char const* const* const argv, OnUnusedOptions::DoWhat unusedOptionBehaviour = OnUnusedOptions::Fail ) {
             try {
@@ -141,6 +149,8 @@ namespace Catch {
                 m_unusedTokens = m_cli.parseInto( Clara::argsToVector( argc, argv ), m_configData );
                 if( m_configData.showHelp )
                     showHelp( m_configData.processName );
+                if( m_configData.libIdentify )
+                    libIdentify( m_configData.processName );
                 m_config.reset();
             }
             catch( std::exception& ex ) {
@@ -197,7 +207,7 @@ namespace Catch {
     #endif
 
         int run() {
-            if( m_configData.showHelp )
+            if( m_configData.showHelp || m_configData.libIdentify )
                 return 0;
 
             try

include/internal/catch_commandline.hpp

@@ -211,6 +211,14 @@ namespace Catch {
             .describe( "should output be colourised" )
             .bind( &setUseColour, "yes|no" );
 
+        cli["--use-colour"]
+            .describe( "should output be colourised" )
+            .bind( &setUseColour, "yes|no" );
+
+        cli["--libidentify"]
+            .describe( "report name and version according to libidentify standard" )
+            .bind( &ConfigData::libIdentify );
+
         return cli;
     }
 

include/internal/catch_config.hpp

@@ -38,6 +38,7 @@ namespace Catch {
             showHelp( false ),
             showInvisibles( false ),
             filenamesAsTags( false ),
+            libIdentify( false ),
             abortAfter( -1 ),
             rngSeed( 0 ),
             verbosity( Verbosity::Normal ),
@@ -59,6 +60,7 @@ namespace Catch {
         bool showHelp;
         bool showInvisibles;
         bool filenamesAsTags;
+        bool libIdentify;
 
         int abortAfter;
         unsigned int rngSeed;