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console.c
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console.c
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/* MMMOC -- ã祡 ï ®¯¥à 樮 ï á¨á⥬
* (c) 2003, Kolia Morev <kolia39@mail.ru>
*
* console.c: ‚뢮¤ ª®á®«ì.
*/
#include "console.h"
#include "sys.h"
#include "util.h"
#include "keymap.h"
/* ãä¥à ª« ¢¨ âãàë (FIFO) */
keybbuf_t keybbuf;
/* ®§¨æ¨ï ªãàá®à */
int pos_x = 0;
int pos_y = 0;
/* „ «ì¨© 㪠§ â¥«ì ¢¨¤¥®¡ãä¥à */
videobuf_t __far *videobuf;
/* ’ ¡«¨æ ¯¥à¥¢®¤ ᪠-ª®¤®¢ ¢ ᨬ¢®«ë.
* ᪠-ª®¤ -- ¨¤¥ªá
*/
char sc2char[] = {0,
27,'1','2','3','4','5','6','7','8','9','0','-','=',0,9,
'q','w','e','r','t','y','u','i','o','p','[',']',13,0,
'a','s','d','f','g','h','j','k','l',';','\'','`',0,'\\',
'z','x','c','v','b','n','m',',','.','/',0,
'*',0,' ',0,0,0,0,0,0,0,0,0,0,0,0,0,
'7','8','9','-','4','5','6','+','1','2','3','0','.',0,
0,'<',0,0,0,0,0,0,0,0,0,
13,0,'/',0,0,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
/* ‘¨¬¢®« ªãàá®à */
#define SCR_CURSOR ('_')
/* ˆ¨æ¨ «¨§ æ¨ï ª®á®«¨ */
void init_console(void)
{
FP_SEG(videobuf) = gdt_add_descriptor(physical_addr(0xb800,0),
4000-1,SDA_TYPE_DATARW|SDA_DEFAULT,SDA_GRAN_DEFAULT);
FP_OFF(videobuf) = 0;
clrscr();
clrstatus();
}
/* Žç¨á⪠íªà */
void clrscr(void)
{
memset(videobuf,0,SCR_X*SCR_Y*sizeof(charcell_t));
pos_x = 0;
pos_y = 0;
}
/* Žç¨á⪠áâப¨ á®áâ®ï¨ï */
void clrstatus(void)
{
wmemset((*videobuf)[SCR_NFO],0x7020,SCR_X);
}
/* Žç¨á⪠áâப¨ ¢¢®¤ */
void clrinput(void)
{
memset((*videobuf)[SCR_IN],0,SCR_X*sizeof(charcell_t));
}
/* ‘¤¢¨£ íªà áâப㠢¢¥àå */
void scr_up(void)
{
memcpy(videobuf,(*videobuf)[1],SCR_X*(SCR_Y-1)*sizeof(charcell_t));
memset((*videobuf)[SCR_Y-1],0,SCR_X*sizeof(charcell_t));
}
/* ‡ ¯¨áì áâப¨ ¢ áâபã á®áâ®ï¨ï */
void putstatus(const char *p, int pos)
{
while(*p!=0) {
if(pos>=SCR_X) return;
(*videobuf)[SCR_NFO][pos].character = *p;
pos++;
p++;
}
}
/* ‚뢥á⨠íªà ᨬ¢®« ¢ ⥪ãéãî ¯®§¨æ¨î */
#define putc(col,c) \
(*videobuf)[pos_y][pos_x].character = c; \
(*videobuf)[pos_y][pos_x].color = col;
int mutex = 1;
/* ‚뢮¤¨â íªà áâப㠢 ⥪ãéãî ¯®§¨æ¨î */
void puts(const char *p)
{
wait_for(mutex);
putc(COL_GRAY,0);
while(*p!=0) {
if(*p=='\n') { pos_x = 0; pos_y++; }
else { putc(COL_GRAY,*p); pos_x++; }
p++;
if(pos_x>=SCR_X) { pos_x = 0; pos_y++; }
if(pos_y>=SCR_Y) { scr_up(); pos_y--; }
}
putc(COL_GRAY|COL_LIGHT,SCR_CURSOR);
release(mutex);
}
/* ‡ ¯®¬¨âì ¢¢¥¤¥ë© ᪠-ª®¤ ¢ ¡ãä¥à¥ */
void store_key(int sc)
{
if(keybbuf.putp+1!=keybbuf.getp) {
keybbuf.buf[keybbuf.putp] = sc;
keybbuf.putp = (keybbuf.putp+1)%KBBUFLEN;
}
}
/* ®«ã票¥ ᪠ª®¤ ¨§ ¡ãä¥à . */
int getsc(void)
{
int ret;
while(keybbuf.putp==keybbuf.getp) sleep();
ret = keybbuf.buf[keybbuf.getp];
keybbuf.getp = (keybbuf.getp+1)%KBBUFLEN;
return ret;
}
/* ‚뢥á⨠¢ áâப¥ ¢¢®¤ ᨬ¢®« ¢ ⥪ãéãî ¯®§¨æ¨î */
#define putcin(col,c) \
(*videobuf)[SCR_IN][top].character = c; \
(*videobuf)[SCR_IN][top].color = col;
/* ‚¢®¤ áâப¨ */
char *gets(char *buffer)
{
int top = 0;
clrinput();
while(TRUE) {
int key = getsc();
if(key==SC_Return||key==SC_KP_Enter) break;
else if(key==SC_Delete) { putcin(COL_GRAY,0); top--; }
else if(sc2char[key]==0) continue;
else {
buffer[top] = sc2char[key];
putcin(COL_GRAY,buffer[top]);
top++;
}
if(top>=SCR_X) top--;
if(top<0) top = 0;
putcin(COL_GRAY|COL_LIGHT,SCR_CURSOR);
}
buffer[top] = 0;
return buffer;
}