Command Line INterpreter with fixes

CommandLine/private/CmdLineInterpreter.cpp

@@ -0,0 +1,120 @@
+#include "CmdLineInterpreter.hpp"
+
+#define MAX_LINE_LENGTH 1024
+
+#include <cstdio>
+#include <cstring>
+
+using namespace tp;
+
+static bool helpFunction(CmdLineInterpreter* self, const CommandLine& args) {
+	self->help(args);
+	return true;
+}
+
+void CmdLineInterpreter::help(const CommandLine& args) const {
+	auto commandName = args.getString("CommandName");
+	auto allCommands = commandName == "_none_";
+
+	if (allCommands) {
+		printf("Commands:\n");
+		for (auto command : mCommands) {
+			printf("  %s\n", command->key.read());
+		}
+		return;
+	}
+
+	auto idx = mCommands.presents(commandName);
+	if (!idx) {
+		printf("Command '%s' not found\n", commandName.read());
+		return;
+	}
+
+	printf("Command '%s'\n", commandName.read());
+	auto command = &mCommands.getSlotVal(idx);
+	command->args->help();
+}
+
+CmdLineInterpreter::CmdLineInterpreter() {
+	auto helpArgs = new CommandLine{
+		{ "CommandName", "_none_" }
+	};
+
+	addCommand("help", helpArgs, (CommandFunction) helpFunction, this);
+}
+
+
+void CmdLineInterpreter::addCommand(const String& id, CommandLine* args, CommandFunction function, void* customData) {
+	ASSERT(!mCommands.presents(id))
+	mCommands.put(id, { args, function, customData });
+}
+
+void CmdLineInterpreter::run() {
+	char buffer[MAX_LINE_LENGTH];
+	printf("Command Line Interpreter (or type 'exit' to quit):\n");
+
+	while (true) {
+		printf("%s >> ", mName.read());
+
+		// Read input from the user
+		if (fgets(buffer, MAX_LINE_LENGTH, stdin) == nullptr) {
+			printf("Error reading input.\n");
+			return;
+		}
+
+		// Remove the trailing newline character if it exists
+		auto length = strlen(buffer);
+		if (length > 0 && buffer[length - 1] == '\n') {
+			buffer[length - 1] = '\0';
+		}
+
+		// Check if the user wants to exit
+		if (strcmp(buffer, "exit") == 0) {
+			return;
+		}
+
+		// Process the input here
+		processCommand(buffer);
+	}
+}
+
+bool CmdLineInterpreter::processCommand(int1* commandString) {
+	ualni commandLen = 0;
+	for (auto i = commandString; *i != 0; i++) {
+		if (*i == ' ') break;
+		commandLen++;
+	}
+
+	commandString[commandLen] = 0;
+	auto args = commandString + commandLen + 1;
+
+	auto idx = mCommands.presents(commandString);
+	if (!idx) {
+		printf("ERROR: Command '%s' is not found\n", commandString);
+		printf("Please execute 'help' for more information\n\n");
+		return true;
+	}
+
+	auto command = &mCommands.getSlotVal(idx);
+
+	command->args->parse(args);
+
+	if (command->args->mError) {
+		printf("ERROR: Command call '%s' has invalid arguments\n", commandString);
+		command->args->resetError();
+		return true;
+	}
+
+	if (!command->function(command->customData, *command->args)) {
+		printf("ERROR: Command call '%s' failed\n", commandString);
+		return true;
+	}
+
+	return true;
+}
+
+CmdLineInterpreter::~CmdLineInterpreter() {
+	for (auto cmd : mCommands) {
+		delete cmd->val.args;
+	}
+}