cls命令

Author: yourtion

18_day/bootpack.c

@@ -2,6 +2,7 @@
 
 #include "bootpack.h"
 #include <stdio.h>
+#include <string.h>
 
 void make_window8(unsigned char *buf, int xsize, int ysize, char *title, char act);
 void putfonts8_asc_sht(struct SHEET *sht, int x, int y, int c, int b, char *s, int l);
@@ -378,6 +379,7 @@ void console_task(struct SHEET *sheet, unsigned int memtotal)
 	int i, fifobuf[128], cursor_x = 16, cursor_y = 28, cursor_c = -1;
 	char s[30], cmdline[30];
 	struct MEMMAN *memman = (struct MEMMAN *) MEMMAN_ADDR;
+	int x, y;
 
 	fifo32_init(&task->fifo, 128, fifobuf, task);
 	timer = timer_alloc();
@@ -431,7 +433,7 @@ void console_task(struct SHEET *sheet, unsigned int memtotal)
 					cmdline[cursor_x / 8 - 2] = 0;
 					cursor_y = cons_newline(cursor_y, sheet);
 					/*执行命令*/
-					if (cmdline[0] == 'm' && cmdline[1] == 'e' && cmdline[2] == 'm' && cmdline[3] == 0) {
+					if (strcmp(cmdline, "mem") == 0) {
 						/* mem命令*/
 						sprintf(s, "total   %dMB", memtotal / (1024 * 1024));
 						putfonts8_asc_sht(sheet, 8, cursor_y, COL8_FFFFFF, COL8_000000, s, 30);
@@ -440,7 +442,16 @@ void console_task(struct SHEET *sheet, unsigned int memtotal)
 						putfonts8_asc_sht(sheet, 8, cursor_y, COL8_FFFFFF, COL8_000000, s, 30);
 						cursor_y = cons_newline(cursor_y, sheet);
 						cursor_y = cons_newline(cursor_y, sheet);
-					} else if (cmdline[0] != 0) {
+					} else if (strcmp(cmdline, "cls") == 0) {
+						/* cls命令*/
+						for (y = 28; y < 28 + 128; y++) {
+							for (x = 8; x < 8 + 240; x++) {
+								sheet->buf[x + y * sheet->bxsize] = COL8_000000;
+							}
+						}
+						sheet_refresh(sheet, 8, 28, 8 + 240, 28 + 128);
+						cursor_y = 28;
+					}	else if (cmdline[0] != 0) {
 						/*不是命令，也不是空行 */
 						putfonts8_asc_sht(sheet, 8, cursor_y, COL8_FFFFFF, COL8_000000, "Bad command.", 12);
 						cursor_y = cons_newline(cursor_y, sheet);