Implement sampov2#18: Implements a basic console interface that allow…

…s listing and loading presets.

+ Add help and license messages as cli options.

src/main-cli.cpp

@@ -34,6 +34,8 @@ ADVISEDOF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <signal.h>
 #include <unistd.h>
+#include <dirent.h>
+#include <string.h>
 
 #include <yc20-jack.h>
 #include <foo-yc20-os.h>
@@ -52,20 +54,44 @@ void exit_cli(int sig)
 	std::cerr << "Exiting" << std::endl;
 }
 
-int main(int argc, char **argv)
-{
+std::string get_version() {
 	std::string version(VERSION_STR);
 	std::string svn_revision("$Revision: 106 $");
 
 	if (version == "") {
 		version = svn_revision.substr(11, svn_revision.find(" $", 11));
 		version = "svn-" + version;
 	}
-
 
-#define L << std::endl <<
-	std::cerr << "Foo-YC20 (CLI) " << version 
-	L	"Copyright 2010-2011 Sampo Savolainen ([email protected]). All rights reserved."
+	return version;
+}
+
+void print_usage() {
+	#define L << std::endl <<
+	std::cerr << "Usage: foo-yc20-cli [OPTION] | [PRESET_FILE_PATH]"
+	L ""
+	L	"Run foo-yc20 combo-organ emulator in headless mode. The following options are accepted:"
+	L ""
+	L	"   -h      Display this help and exit"
+	L	"   -l      Display license info and exit"
+	L "" << std::endl;
+	#undef L
+}
+
+void print_command_help() {
+	#define L << std::endl <<
+	std::cerr << "Available Commands:"
+	L	"   + get_presets : Print preset list"
+	L "   + set_preset [PRESET_FILE_PATH] : Load preset from file"
+	L "   + help : Print command help"
+	L "   + exit : Exit"
+	L "" << std::endl;
+	#undef L
+}
+
+void print_license() {
+	#define L << std::endl <<
+	std::cerr << "Copyright 2010-2011 Sampo Savolainen ([email protected]). All rights reserved."
 	L	"Redistribution and use in source and binary forms, with or without modification,"
 	L	"are permitted provided that the following conditions are met:"
 	L	"   1. Redistributions of source code must retain the above copyright notice,"
@@ -85,8 +111,64 @@ int main(int argc, char **argv)
 	L	"PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF"
 	L	"LIABILITY, WHETHERIN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE"
 	L	"OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF"
-	L	"ADVISEDOF THE POSSIBILITY OF SUCH DAMAGE." << std::endl;
-#undef L
+	L	"ADVISEDOF THE POSSIBILITY OF SUCH DAMAGE."
+	L "" << std::endl;
+	#undef L
+}
+
+void print_presets() {
+	DIR *dir;
+	struct dirent *ent;
+	std::string dirName(DEFAULT_CONFIG_DIR);
+	if ((dir = opendir (dirName.c_str())) != NULL) {
+		while ((ent = readdir (dir)) != NULL) {
+			if (ent->d_name[0]=='.') continue; 
+			std::cout << ent->d_name << std::endl;
+		}
+		closedir (dir);
+	} else {
+		std::cerr << "Could not open presets directory!" << std::endl;
+	}
+}
+
+void process_command(YC20Jack &processor, char *command) {
+	char arg1[128];
+
+	if (strcmp(command, "get_presets\n") == 0) {
+		print_presets();
+	}
+	else if (sscanf(command, "set_preset %[a-zA-Z0-9_:/-.#]\n", arg1) == 1) {
+		std::string dirName(DEFAULT_CONFIG_DIR);
+		std::string fname(arg1);
+		std::string fpath=dirName + "/" + fname;
+		std::cerr << "Loading preset <" << fpath << ">" << std::endl;
+		processor.loadConfiguration(fpath);
+	}
+	else if (strcmp(command, "help\n") == 0) {
+		print_command_help();
+	}
+	else if (strcmp(command, "exit\n") == 0) {
+		exit_cli(0);
+	}
+}
+
+int main(int argc, char **argv)
+{
+	std::cerr << "Foo-YC20 (CLI) " << get_version() << " (c)Sampo Savolainen 2010" << std::endl << std::endl;
+
+	std::string config_fpath;
+	if (argc > 1) {
+		std::string arg1(argv[1]);
+		if (arg1=="-h") {
+			print_usage();
+			return 0;
+		} else if (arg1=="-l") {
+			print_license();
+			return 0;
+		} else {
+			config_fpath=arg1;
+		}
+	}
 
 	YC20Jack processor;
 	processor.connect();
@@ -98,10 +180,9 @@ int main(int argc, char **argv)
 	processor.setDSP(yc20);
 	getUserData(yc20)->osc = osc;
 
-	if (argc > 1) {
-		std::string conf(argv[1]);
-		std::cerr << "using configuration file '" << conf << "'" << std::endl;
-		processor.loadConfiguration(conf);
+	if (!config_fpath.empty()) {
+		std::cerr << "Using configuration file '" << config_fpath << "'" << std::endl;
+		processor.loadConfiguration(config_fpath);
 	} else {
 		processor.loadConfiguration();
 	}
@@ -110,10 +191,20 @@ int main(int argc, char **argv)
 	run = true;
 	signal(SIGINT, exit_cli);
 
-	while(run) {
-		sleep(100); // ctrl-C interrupts sleep and runs exit_cli() which sets run to false
+	while (run) {
+		char line[128];
+		std::cout << "> ";
+		if (fgets(line, sizeof(line), stdin)) {
+			process_command(processor, line);
+		} else {
+			break;
+		}
 	}
 
+	//while(run) {
+	//	sleep(100); // ctrl-C interrupts sleep and runs exit_cli() which sets run to false
+	//}
+
 	processor.deactivate();
 
 	processor.saveConfiguration();