cmd.exe: Add COLOR command.

programs/cmd/builtins.c

@@ -47,7 +47,7 @@ struct env_stack *pushd_directories;
 
 extern HINSTANCE hinst;
 extern char *inbuilt[];
-extern int echo_mode, verify_mode;
+extern int echo_mode, verify_mode, defaultColor;
 extern char quals[MAX_PATH], param1[MAX_PATH], param2[MAX_PATH];
 extern BATCH_CONTEXT *context;
 extern DWORD errorlevel;
@@ -1631,3 +1631,52 @@ void WCMD_assoc (char *command) {
     /* Clean up */
     RegCloseKey(key);
 }
+
+/****************************************************************************
+ * WCMD_color
+ *
+ * Clear the terminal screen.
+ */
+
+void WCMD_color (void) {
+
+  /* Emulate by filling the screen from the top left to bottom right with
+        spaces, then moving the cursor to the top left afterwards */
+  CONSOLE_SCREEN_BUFFER_INFO consoleInfo;
+  HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
+
+  if (param1[0] != 0x00 && strlen(param1) > 2) {
+    WCMD_output ("Argument invalid\n");
+    return;
+  }
+
+  if (GetConsoleScreenBufferInfo(hStdOut, &consoleInfo))
+  {
+      COORD topLeft;
+      DWORD screenSize;
+      DWORD color = 0;
+
+      screenSize = consoleInfo.dwSize.X * (consoleInfo.dwSize.Y + 1);
+
+      topLeft.X = 0;
+      topLeft.Y = 0;
+
+      /* Convert the color hex digits */
+      if (param1[0] == 0x00) {
+        color = defaultColor;
+      } else {
+        color = strtoul(param1, NULL, 16);
+      }
+
+      /* Fail if fg == bg color */
+      if (((color & 0xF0) >> 4) == (color & 0x0F)) {
+        errorlevel = 1;
+        return;
+      }
+
+      /* Set the current screen contents and ensure all future writes
+         remain this color                                             */
+      FillConsoleOutputAttribute(hStdOut, color, screenSize, topLeft, &screenSize);
+      SetConsoleTextAttribute(hStdOut, color);
+  }
+}

programs/cmd/wcmd.h

@@ -32,6 +32,7 @@ void WCMD_batch (char *, char *, int, char *, HANDLE);
 void WCMD_call (char *command);
 void WCMD_change_tty (void);
 void WCMD_clear_screen (void);
+void WCMD_color (void);
 void WCMD_copy (void);
 void WCMD_create_dir (void);
 void WCMD_delete (char *);
@@ -157,9 +158,10 @@ struct env_stack
 #define WCMD_PUSHD  38
 #define WCMD_POPD   39
 #define WCMD_ASSOC  40
+#define WCMD_COLOR  41
 
 /* Must be last in list */
-#define WCMD_EXIT   41
+#define WCMD_EXIT   42
 
 /* Some standard messages */
 extern const char nyi[];

programs/cmd/wcmdmain.c

@@ -35,11 +35,11 @@ const char * const inbuilt[] = {"ATTRIB", "CALL", "CD", "CHDIR", "CLS", "COPY",
 		"HELP", "IF", "LABEL", "MD", "MKDIR", "MOVE", "PATH", "PAUSE",
 		"PROMPT", "REM", "REN", "RENAME", "RD", "RMDIR", "SET", "SHIFT",
                 "TIME", "TITLE", "TYPE", "VERIFY", "VER", "VOL", 
-                "ENDLOCAL", "SETLOCAL", "PUSHD", "POPD", "ASSOC", "EXIT" };
+                "ENDLOCAL", "SETLOCAL", "PUSHD", "POPD", "ASSOC", "COLOR", "EXIT" };
 
 HINSTANCE hinst;
 DWORD errorlevel;
-int echo_mode = 1, verify_mode = 0;
+int echo_mode = 1, verify_mode = 0, defaultColor = 7;
 static int opt_c, opt_k, opt_s;
 const char nyi[] = "Not Yet Implemented\n\n";
 const char newline[] = "\n";
@@ -578,6 +578,9 @@ void WCMD_process_command (char *command)
       case WCMD_ASSOC:
         WCMD_assoc(p);
         break;
+      case WCMD_COLOR:
+        WCMD_color();
+        break;
       case WCMD_EXIT:
         WCMD_exit ();
         break;