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