added some command functionality

src/io.c

@@ -2,15 +2,62 @@
 #include "pic.h"
 #include "serial.h"
 #include "idt.h"
+#include "string.h"
+#include "term.h"
 
 char scan_map[256] = {' ','E','1','2','3','4','5','6','7','8','9','0','-','=','\b','\t','q','w','e','r','t','y','u','i','o','p',
 		      '[',']','\n','^','a','s','d','f','g','h','j','k','l',';','\'','`','S','\\','z','x','c','v','b','n','m',
 		      ',','.','/','S','O','A',' ','C','F','F','F','F','F','F','F','F','F','F','L','L',};
+char kb_buf[256];
+int kb_buf_size;
+int cstack[128];
+int cstack_size;
+
+void io_process(char* s)
+{
+    terminal_putchar('\n');
+    if(strncmp(s,"echo ",5)==0)
+    {
+	terminal_writestring(s+5);
+	terminal_putchar('\n');
+    }
+    else if(strncmp(s,"serial ",7)==0)
+    {
+	serial_writestring("\n");
+	serial_writestring(s+7);
+	serial_writestring("\n");
+    }
+    else if(strncmp(s,"hex ",4)==0)
+    {
+	terminal_hexstring(s+4,16);
+	terminal_putchar('\n');
+    }
+    else if(strncmp(s,"push ",5)==0)
+    {
+	int n = stoi(s+5);
+	cstack[cstack_size]=n;
+	cstack_size++;
+	//terminal_writestring("pushed\n");
+    }
+    else if(strncmp(s,"pop",3)==0)
+    {
+	if(cstack_size==0)
+	{
+	    terminal_writestring("stack empty\n");
+	}
+	else
+	{
+	    terminal_putchar(cstack[cstack_size-1]+48);
+	    cstack_size--;
+	    terminal_putchar('\n');
+	}
+    }
+}
 
 void kbd_irq()
 {
     int a = inb(0x60);
-    serial_hexword(a);
+    //serial_hexword(a);
     if(a==0x4b)
 	terminal_adjustcursor(-1,0);
     else if(a==0x4d)
@@ -20,10 +67,33 @@ void kbd_irq()
     else if(a==0x50)
 	terminal_adjustcursor(0,1);
     else if(a<0x80)
-	terminal_putchar(scan_map[a]);  
+    {
+	char in = scan_map[a];
+	if(in == '\n')//enter pressed
+	{
+	    io_process(kb_buf);
+	    for(int i=0;i<kb_buf_size;i++)
+	    {
+		kb_buf[i]='\0';
+	    }
+	    kb_buf_size=0;
+	}
+	else if(in=='\b')
+	{
+	    kb_buf_size--;
+	    kb_buf[kb_buf_size]='\0';
+	    terminal_putchar(in);
+	}
+	else
+	{
+	    kb_buf[kb_buf_size]=in;
+	    kb_buf_size++;
+	    terminal_putchar(in);  
+	}
+    }
     //else
     //terminal_putchar(scan_map[a-0x80]);
-    serial_writestring("\n");
+    //serial_writestring("\n");
     pic_command(0, PIC_OCW2_EOI);
 }