Implemented a yet very basic in-synth-interface

The interface understands "quit" and "exit", and accepts but ignores
"reload" and "load". It catches CTRL+C.

1 files changed, 69 insertions, 0 deletions

diff --git a/synth/in_synth_cli.cpp b/synth/in_synth_cli.cpp
new file mode 100644
index 0000000..7aa1d8e
--- /dev/null
+++ b/synth/in_synth_cli.cpp
@@ -0,0 +1,69 @@
+#include <iostream>
+#include <string>
+#include <signal.h>
+
+#include "in_synth_cli.h"
+#include "util.h"
+
+using namespace std;
+
+#define PROMPT "> "
+
+void signal_handler(int sig)
+{
+	cout << endl << PROMPT << flush;
+}
+
+void do_in_synth_cli()
+{
+	string input;
+	string command;
+	string params;
+	
+	if (signal(2,signal_handler)==SIG_ERR)
+	{
+		cout << "WARNING: failed to set signal handler!" << endl;
+	}
+
+
+	while (true)
+	{
+		cout << PROMPT << flush;
+		getline(cin,input);
+		input=trim_spaces(input);
+		
+		command=trim_spaces(str_before(input,' ',input));
+		params=trim_spaces(str_after(input,' ',""));
+		
+		if ((command=="exit") || (command=="quit"))
+			break;
+		else if (command=="reload")
+		{
+			if ((!isnum(params)) || (params==""))
+				cout << "error: expected program-number, found '"<<params<<"'"<<endl;
+			else
+			{
+				//TODO: load program
+			}
+		}
+		else if (command=="load")
+		{
+			string prgstr, file;
+			prgstr=trim_spaces(str_before(params,' ',params));
+			file=trim_spaces(str_after(params,' ',""));
+			
+			if ((!isnum(prgstr)) || (prgstr==""))
+				cout << "error: expected program-number, found '"<<prgstr<<"'"<<endl;
+			else if (file=="")
+				cout << "error: expected program-file to load, found nothing"<<endl;
+			else
+			{
+				//TODO: load program
+			}
+		}
+		else if (command!="")
+		{
+			cout << "error: unrecognized command '"<<command<<"'"<<endl;
+		}
+	}
+}