Espresso 0.0.1b

scripts/.config

@@ -0,0 +1,5 @@
+Enable Debug=n
+Enable Filesystem=y
+Enable AHCI=y
+Enable USB=n
+Enable Network=n

scripts/kconfig.c

@@ -0,0 +1,296 @@
+#include <ncurses.h>
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <stdio.h>
+
+
+typedef struct {
+    const char* name;
+    int enabled;
+} option_t;
+
+typedef struct {
+    const char* title;
+    option_t* options;
+    size_t num_options;
+} menu_t;
+
+void show_menu(menu_t* menu);
+void load_config(menu_t* menus, size_t menu_count);
+void save_config(menu_t* menus, size_t menu_count);
+
+#define SIZE(x) (sizeof(x) / sizeof(option_t))
+#define NUM_MENUS (sizeof(all_menus) / sizeof(menu_t))
+#define KEY_ESCAPE 27
+
+option_t general_opts[] = {
+  { "Enable Debugging Messages", 1 },
+  { "Enable Filesystems", 0 },
+};
+
+option_t drivers_opts[] = {
+  { "Enable IDE", 1 },
+  { "Enable USB", 0 },
+  { "Enable Network", 0 },
+};
+
+menu_t all_menus[] = {
+  { "General Settings", general_opts, SIZE(general_opts) },
+  { "Device Drivers", drivers_opts, SIZE(drivers_opts) },
+};
+
+bool current_config_saved = false;
+
+void strfix(char *str)
+{
+  for (size_t i = 0; str[i] != '\0'; ++i)
+  {
+    if (isspace((unsigned char)str[i]))
+    {
+      str[i] = '_';
+    }
+    else
+    {
+      str[i] = toupper((unsigned char)str[i]);
+    }
+  }
+}
+
+void load_config(menu_t* menus, size_t menu_count)
+{
+  FILE* f = fopen(".config", "r");
+  if (!f)
+  {
+    return;
+  }
+
+  char line[128];
+  while (fgets(line, sizeof(line), f))
+  {
+    char* newline = strchr(line, '\n');
+    if (newline)
+    {
+      *newline = 0;
+    }
+
+    for (size_t m = 0; m < menu_count; m++)
+    {
+      for (size_t i = 0; i < menus[m].num_options; i++)
+      {
+        if (strncmp(line, menus[m].options[i].name, strlen(menus[m].options[i].name)) == 0)
+        {
+          if (strstr(line, "=y"))
+          {
+            menus[m].options[i].enabled = 1;
+          }
+          else
+          {
+            menus[m].options[i].enabled = 0;
+          }
+        }
+      }
+    }
+  }
+
+  fclose(f);
+}
+
+const char* cc = "\n\nstatic inline kconf_t get_kconfig(void)\n"
+                 "{\n"
+                 "\tkconf_t kc = { false, false, false, false, false };\n\n"
+                 "#ifdef ENABLE_DEBUGGING_MESSAGES\n"
+                 "\tkc.enable_debug = true;\n"
+                 "#endif\n"
+                 "#ifdef ENABLE_FILESYSTEMS\n"
+                 "\tkc.enable_fs = true;\n"
+                 "#endif\n"
+                 "#ifdef ENABLE_IDE\n"
+                 "\tkc.enable_ide = true;\n"
+                 "#endif\n"
+                 "#ifdef ENABLE_USB\n"
+                 "\tkc.enable_usb = true;\n"
+                 "#endif\n"
+                 "#ifdef ENABLE_NETWORK\n"
+                 "\tkc.enable_networking = true;\n"
+                 "#endif\n\n"
+                 "\treturn kc;\n"
+                 "}\n\n"
+                 "#ifdef __cplusplus\n"
+                 "}\n"
+                 "#endif\n";
+
+/* Save current configuration options to Makefile and/or kconfig.h */
+void save_config(menu_t* menus, size_t menu_count)
+{
+  FILE* kconff = fopen("../include/kernel/kconfig.h", "w");
+  
+  if (!kconff)
+  {
+    return;
+  }
+  
+  const char* hg = "#ifndef _KCONFIG_H\n#define _KCONFIG_H\n\n#include <types.h>\n\n#ifdef __cplusplus\nextern \"C\" {\n#endif\n\n";
+  
+  
+  fprintf(kconff, hg);
+  
+  for (size_t m = 0; m < menu_count; m++)
+  {
+    for (size_t i = 0; i < menus[m].num_options; i++)
+    {
+      
+      char buffer[128];
+      strncpy(buffer, menus[m].options[i].name, sizeof(buffer));
+      buffer[sizeof(buffer)-1] = '\0';
+      strfix(buffer);
+      
+      if (menus[m].options[i].enabled == 0)
+      {
+        fprintf(kconff, "//");
+      }
+      
+      fprintf(kconff, "#define %s\n", buffer, menus[m].options[i].enabled);
+    }
+  }
+
+  fprintf(kconff, cc);
+
+  fprintf(kconff, "\n#endif\n");
+
+  fclose(kconff);
+  
+  current_config_saved = true;
+}
+
+menu_t* create_menu(const char* title)
+{
+  menu_t* menu = malloc(sizeof(menu_t));
+  menu->title = strdup(title);
+  menu->options = NULL;
+  menu->num_options = 0;
+  return menu;
+}
+
+void add_option(menu_t* menu, const char* name, int default_value)
+{
+  menu->options = realloc(menu->options, sizeof(option_t) * (menu->num_options + 1));
+  menu->options[menu->num_options].name = strdup(name);
+  menu->options[menu->num_options].enabled = default_value;
+  menu->num_options++;
+}
+
+
+/* Display a single submenu */
+void show_menu(menu_t* menu)
+{
+  int selected = 0;
+
+  while (1)
+  {
+    clear();
+    mvprintw(0, 0, "%s (SPACE=toggle, (left arrow key or esc)=back, S=save)", menu->title);
+
+    for (size_t i = 0; i < menu->num_options; i++)
+    {
+      if ((int)i == selected)
+      {
+        attron(A_REVERSE);
+      }
+      mvprintw(i + 2, 2, "[%c] %s", menu->options[i].enabled ? 'X' : ' ', menu->options[i].name);
+      if ((int)i == selected)
+      {
+        attroff(A_REVERSE);
+      }
+    }
+
+    int ch = getch();
+    
+    if (ch == KEY_UP && selected > 0)
+    {
+      selected--;
+    }
+    else if (ch == KEY_DOWN && selected < (int)menu->num_options - 1)
+    {
+      selected++;
+    }
+    else if (ch == ' ')
+    {
+      menu->options[selected].enabled = !menu->options[selected].enabled;
+      current_config_saved = false;
+    }
+    else if (ch == 's' || ch == 'S')
+    {
+      save_config(all_menus, NUM_MENUS);
+      mvprintw(menu->num_options + 3, 2, "Saved.");
+      refresh();
+      getch();
+    }
+    else if (ch == KEY_LEFT || ch == KEY_ESCAPE || ch == 'q' || ch == 'Q')
+    {
+      break;
+    }
+  }
+}
+
+/* Main menu with submenu navigation */
+int main(void)
+{
+  initscr();
+  noecho();
+  cbreak();
+  keypad(stdscr, TRUE);
+  set_escdelay(25); /* wait only 25ms for escape sequences */
+
+  /*load_config(all_menus, NUM_MENUS);*/
+
+  int selected = 0;
+  while (1)
+  {
+    clear();
+    mvprintw(0, 0, "Kernel Configuration (ENTER=submenu, S=save, Q=quit)");
+
+    for (size_t i = 0; i < NUM_MENUS; i++)
+    {
+      if ((int)i == selected)
+      {
+        attron(A_REVERSE);
+      }
+      mvprintw(i + 2, 2, "> %s", all_menus[i].title);
+      if ((int)i == selected)
+      {
+        attroff(A_REVERSE);
+      }
+    }
+
+    int ch = getch();
+    
+    if (ch == KEY_UP && selected > 0)
+    {
+      selected--;
+    }
+    else if (ch == KEY_DOWN && selected < (int)NUM_MENUS - 1)
+    {
+      selected++;
+    }
+    else if (ch == '\n')
+    {
+      show_menu(&all_menus[selected]);
+    }
+    else if (ch == 's' || ch == 'S')
+    {
+      save_config(all_menus, NUM_MENUS);
+      mvprintw(NUM_MENUS + 3, 2, "Saved.");
+      refresh();
+      getch();
+    }
+    else if (ch == 'q' || ch == 'Q')
+    {
+      break;
+    }
+  }
+
+  endwin();
+  return 0;
+}
+