Create hybrid authority model for command processing.

client/src/terminal.cpp

@@ -5,54 +5,60 @@
 #include <SDL3/SDL_events.h>
 
 #include "client_network.h"
+#include "command_processor.h"
 #include "gfx/txt_renderer.h"
+#include "vfs_manager.h"
+#include "vfs.h"
 #include "terminal.h"
 
 Terminal::Terminal(void) {
   /* Placeholder welcome message to history. */
-  _history.push_back("Welcome to Bettola");
-  _network = new ClientNetwork();
-  if(_network->connect("localhost", 8080)) {
-    _history.push_back("Connection to server Success!");
-  } else {
-    _history.push_back("Connection to server failed!");
-  }
-  _current_path = "/";
+  _history.push_back("Welcome to Bettola (local mode)");
+  _network = nullptr; /* No network connection for now. */
+
+  /* Create local file system for the client. */
+  _local_vfs = vfs_manager::create_root_system();
+  _local_cmd_processor = new CommandProcessor(_local_vfs);
+  _current_path = get_full_path(_local_cmd_processor->get_current_dir());
   _scroll_offset = 0;
 }
 
 Terminal::~Terminal(void) {
-  delete _network;
+  if(_network) {
+    delete _network;
+  }
 }
 
 void Terminal::_on_ret_press(void) {
+  std::string command = _input_buffer;
   /* Add the command to history. */
-  _history.push_back("> " + _input_buffer);
+  _history.push_back(_current_path + "> " + command);
 
-  /* For now, print the commmand clear buffer.
-   * TODO: Parse and execute commands.
+  std::string response;
+  /*
+   * All commands run locally for now.
+   * TODO: Remote commands.
    */
-  printf("Command entered: %s\n", _input_buffer.c_str());
-  _network->send_command(_input_buffer.c_str());
-  std::string response = _network->receive_response();
+  if(command == "clear") {
+    _history.clear();
+  } else {
+    response = _local_cmd_processor->process_command(command);
+  }
+
   /* Check if the response is a new path for the prompt. */
-  if(response.rfind("/", 0) == 0 && response.find('\n') == std::string::npos) {
+  if(response.rfind("/", 0) == 0) {
     _current_path = response;
   } else if(!response.empty()) {
     /* Otherwise, it's command out. Split it by newline and add to history. */
     std::stringstream ss(response);
     std::string line;
     while(std::getline(ss, line, '\n')) {
-      _history.push_back(line);
+      if(!line.empty()) {
+        _history.push_back(line);
+      }
     }
   }
 
-  if(_input_buffer == "clear") {
-    _history.clear();
-  } else if(_input_buffer == "help") {
-    _history.push_back("Commands: help, clear");
-  }
-
   _input_buffer.clear();
   /* TODO: Ugly hack. Refactor to pass window height
    * We need the window height to know if we should

client/src/terminal.h

@@ -5,6 +5,8 @@
 
 #include "gfx/txt_renderer.h"
 #include "client_network.h"
+#include "vfs_manager.h"
+#include "command_processor.h"
 
 class Terminal {
 public:
@@ -22,5 +24,7 @@ private:
   std::vector<std::string> _history;
   int _scroll_offset;
   std::string _current_path;
+  vfs_node* _local_vfs;
+  CommandProcessor* _local_cmd_processor;
   ClientNetwork* _network;
 };

common/src/command_processor.cpp

@@ -0,0 +1,45 @@
+#include "command_processor.h"
+#include "vfs.h"
+
+CommandProcessor::CommandProcessor(vfs_node* starting_dir) {
+  _current_dir = starting_dir;
+}
+
+vfs_node* CommandProcessor::get_current_dir(void) {
+  return _current_dir;
+}
+
+std::string CommandProcessor::process_command(const std::string& command) {
+  if(command.rfind("cd ", 0) == 0) {
+    std::string target_dir_name = command.substr(3);
+    if(target_dir_name == "..") {
+      if(_current_dir->parent) {
+        _current_dir = _current_dir->parent;
+      }
+    } else if(_current_dir->children.count(target_dir_name)) {
+      vfs_node* target_node = _current_dir->children[target_dir_name];
+      if(target_node->type == DIR_NODE) {
+        _current_dir = target_node;
+      } else {
+        return "cd: not a directory\n";
+      }
+    } else {
+      return "cd: no such file or directory\n";
+    }
+    return get_full_path(_current_dir);
+  } else if(command == "ls") {
+    std::string response = "";
+    if(_current_dir && _current_dir->type == DIR_NODE) {
+      for(auto const& [name, node] : _current_dir->children) {
+        response += name;
+        if(node->type == DIR_NODE) {
+          response += "/";
+        }
+        response += "  ";
+      }
+    }
+    return response;
+  }
+
+  return "Unknown command: " + command + "\n";
+}

common/src/command_processor.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <string>
+
+#include "vfs.h"
+
+class CommandProcessor {
+public:
+  CommandProcessor(vfs_node* starting_dir);
+
+  std::string process_command(const std::string& command);
+  vfs_node* get_current_dir(void);
+
+private:
+  vfs_node* _current_dir;
+};