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cleanup vt100 part

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This commit is contained in:
Laurent Vivier 2007-05-31 17:36:59 +00:00
parent 1d5adc3204
commit e97734ac1a
1 changed files with 39 additions and 36 deletions
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75
second/vga.c
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@ -17,6 +17,8 @@
QDGlobals qd; QDGlobals qd;
#define VT100_STACK_SIZE 16
typedef struct vga_handler { typedef struct vga_handler {
unsigned char* video; unsigned char* video;
@ -29,6 +31,11 @@ typedef struct vga_handler {
unsigned long siz_w, siz_h; unsigned long siz_w, siz_h;
unsigned long pos_x, pos_y; unsigned long pos_x, pos_y;
unsigned char mask; unsigned char mask;
/* vt100 emulation */
int escape_level;
char escape_stack[VT100_STACK_SIZE];
unsigned long saved_x, saved_y; unsigned long saved_x, saved_y;
} vga_handler_t ; } vga_handler_t ;
@ -432,6 +439,7 @@ vga_init()
vga.siz_w = vga.width / 8; vga.siz_w = vga.width / 8;
vga.siz_h = vga.height / 16; vga.siz_h = vga.height / 16;
vga.mask = 0xFF; vga.mask = 0xFF;
vga.escape_level= 0;
vga_cursor(0); vga_cursor(0);
vga_clear(); vga_clear();
@ -481,38 +489,34 @@ vga_clear()
void void
vga_put(char c) vga_put(char c)
{ {
static int escape_level = 0;
static char escape_stack[16];
int tmp_x, tmp_y; int tmp_x, tmp_y;
char *end; char *end;
vga_cursor(0); vga_cursor(0);
/* VT100 EMULATION */ /* VT100 EMULATION */
if (escape_level) if (vga.escape_level)
{ {
escape_stack[escape_level - 1] = c; vga.escape_stack[vga.escape_level - 1] = c;
escape_stack[escape_level] = 0; vga.escape_stack[vga.escape_level] = 0;
escape_level++; vga.escape_level++;
switch(escape_stack[0]) switch(vga.escape_stack[0])
{ {
case '7': /* cursor save */ case '7': /* cursor save */
vga.saved_x = vga.pos_x; vga.saved_x = vga.pos_x;
vga.saved_y = vga.pos_y; vga.saved_y = vga.pos_y;
escape_level = 0; goto exit_escape;
return;
case '8': /* cursor restore */ case '8': /* cursor restore */
vga.pos_x = vga.saved_x; vga.pos_x = vga.saved_x;
vga.pos_y = vga.saved_y; vga.pos_y = vga.saved_y;
vga_cursor_refresh(); goto exit_escape;
escape_level = 0;
return;
case '[': case '[':
if (escape_level <= 2) if (vga.escape_level <= 2)
return; /* sequence is empty */ goto exit;
/* Control Sequence Introducer (CSI) ends /* Control Sequence Introducer (CSI) ends
* with a letter * with a letter
@ -520,34 +524,31 @@ vga_put(char c)
switch(c) switch(c)
{ {
case 'J': /* clear screen */ case 'J': /* clear screen */
if (strcmp("[2J", escape_stack) == 0) if (strcmp("[2J", vga.escape_stack) == 0)
{ {
vga_clear(); vga_clear();
escape_level = 0; goto exit_escape;
return;
} }
break; break;
case 'l': /* hide cursor */ case 'l': /* hide cursor */
if (strcmp("[?25l", escape_stack) == 0) if (strcmp("[?25l", vga.escape_stack) == 0)
{ {
vga_cursor_off(); vga_cursor_off();
escape_level = 0; goto exit_escape;
return;
} }
break; break;
case 'h': /* show cursor */ case 'h': /* show cursor */
if (strcmp("[?25h", escape_stack) == 0) if (strcmp("[?25h", vga.escape_stack) == 0)
{ {
vga_cursor_on(); vga_cursor_on();
escape_level = 0; goto exit_escape;
return;
} }
break; break;
case 'H': /* set cursor position */ case 'H': /* set cursor position */
tmp_x = strtol(escape_stack + 1, &end, 10); tmp_x = strtol(vga.escape_stack + 1, &end, 10);
if (*end == ';') if (*end == ';')
{ {
tmp_y = strtol(end + 1, &end, 10); tmp_y = strtol(end + 1, &end, 10);
@ -555,37 +556,33 @@ vga_put(char c)
{ {
vga.pos_x = tmp_x; vga.pos_x = tmp_x;
vga.pos_y = tmp_y; vga.pos_y = tmp_y;
vga_cursor_refresh(); goto exit_escape;
escape_level = 0;
return;
} }
} }
break; break;
case 'm': /* set video mode */ case 'm': /* set video mode */
if (strcmp("[7m", escape_stack) == 0) if (strcmp("[7m", vga.escape_stack) == 0)
{ {
/* inverse */ /* inverse */
vga_set_video_mode(1); vga_set_video_mode(1);
escape_level = 0; goto exit_escape;
return;
} }
else if (strcmp("[27m", escape_stack) == 0) else if (strcmp("[27m", vga.escape_stack) == 0)
{ {
/* normal */ /* normal */
vga_set_video_mode(0); vga_set_video_mode(0);
escape_level = 0; goto exit_escape;
return;
} }
break; break;
default: default:
return; goto exit;
} }
} }
} }
escape_level = 0; vga.escape_level = 0;
switch(c) { switch(c) {
case '\r': case '\r':
vga.pos_x = 0; vga.pos_x = 0;
@ -604,7 +601,7 @@ vga_put(char c)
} }
break; break;
case '\033': /* ESCAPE */ case '\033': /* ESCAPE */
escape_level = 1; vga.escape_level = 1;
break; break;
default: default:
draw_byte((unsigned char)c, vga.pos_x++, vga.pos_y); draw_byte((unsigned char)c, vga.pos_x++, vga.pos_y);
@ -618,6 +615,12 @@ vga_put(char c)
vga.pos_y--; vga.pos_y--;
} }
exit:
vga_cursor_refresh();
return;
exit_escape:
vga.escape_level = 0;
vga_cursor_refresh(); vga_cursor_refresh();
} }