修复shell无法正确获取输入问题

apps/shell/shell.c

@@ -5,12 +5,21 @@
 
 extern void print_info();
 
+int shell_getc(){
+    char c;
+    do{
+        c = syscall_getch();
+        if(c == '\b' || c == '\n') break;
+    } while (!isprint(c));
+    return c;
+}
+
 static int gets(char *buf) {
 
     int index = 0;
     char c;
 
-    while ((c = syscall_getch()) != '\n') {
+    while ((c = shell_getc()) != '\n') {
         if (c == '\b') {
             if (index > 0) {
                 index--;

src/kernel/kernel.c

@@ -163,9 +163,9 @@ void kernel_main(multiboot_t *multiboot) {
     clock_sleep(25);
 
     vfs_change_path("apps");
-    klogf(user_process("init.bin","InitService") != -1,"Init service process init.\n");
+   // klogf(user_process("init.bin","InitService") != -1,"Init service process init.\n");
-   // int pid = user_process("shell.bin","UserShell");
+    int pid = user_process("shell.bin","UserShell");
-    //kernel_thread(check_task_usershell,&pid,"CTU");
+    kernel_thread(check_task_usershell,&pid,"CTU");
 
    // int pid = kernel_thread(setup_shell,NULL,"CPOS-Shell");
    // klogf(pid != -1,"Launch kernel shell.\n");

src/kernel/tty.c

@@ -394,7 +394,7 @@ void init_default_tty(struct task_struct *task){
     task->tty->is_using = true;
     task->tty->print = tty_print;
     task->tty->clear = clear_TextMode;
-    task->tty->putchar = putchar_TextMode;
+    task->tty->putchar = vbe_putchar;
     task->tty->gotoxy = tty_gotoxy;
     task->tty->screen_ne = screen_ne_TextMode;
     task->tty->vram = screen;

src/sysapp/shell.c

@@ -14,8 +14,16 @@ extern Queue *key_char_queue;
 extern vdisk vdisk_ctl[10];
 extern bool hasFS;
 
+static inline int isprint_syshell(int c) {
+    return (c > 0x1F && c < 0x7F);
+}
+
 char getc() {
-    char c = kernel_getch();
+    char c;
+    do{
+        c = kernel_getch();
+        if(c == '\b' || c == '\n') break;
+    } while (!isprint_syshell(c));
     return c;
 }
 

src/util/printf.c

@@ -338,8 +338,6 @@ void print(char *message) {
         return;
     }
 
-    logk(message);
-
     if(vbe_status){
         vbe_writestring(message);
     } else vga_writestring(message);