Author: blueswirl Date: 2007-04-30 21:08:37 +0200 (Mon, 30 Apr 2007) New Revision: 135
Modified: openbios-devel/modules/console.c Log: Improve escape sequence handling
Modified: openbios-devel/modules/console.c =================================================================== --- openbios-devel/modules/console.c 2007-04-29 19:57:01 UTC (rev 134) +++ openbios-devel/modules/console.c 2007-04-30 19:08:37 UTC (rev 135) @@ -21,6 +21,13 @@ #define NCOLS 80 #define NROWS 48
+typedef enum { + ESnormal, ESesc, ESsquare, ESgetpars, ESgotpars, ESfunckey, + EShash, ESsetG0, ESsetG1, ESpercent, ESignore, ESnonstd, + ESpalette +} vc_state_t; + +#define NPAR 16 static struct { int inited; int physw, physh; @@ -30,6 +37,9 @@ char *buf;
int cursor_on; + vc_state_t vc_state; + unsigned int vc_npar,vc_par[NPAR]; /* Parameters of current + escape sequence */ } cons;
static int @@ -115,6 +125,7 @@ cons.buf = malloc( cons.w * cons.h ); cons.inited = 1; cons.x = cons.y = 0; + cons.vc_state = ESnormal; return 0; }
@@ -162,22 +173,148 @@ draw_line(cons.h-1); }
+static void +do_con_trol(int ch) +{ + unsigned int i, j; + + switch (ch) { + case 8: + if (cons.x) + cons.x--; + return; + case 10 ... 12: + cons.x = 0; + cons.y++; + return; + case 13: + cons.x = 0; + return; + case 24: + case 26: + cons.vc_state = ESnormal; + return; + case 27: + cons.vc_state = ESesc; + return; + } + + switch (cons.vc_state) { + case ESesc: + cons.vc_state = ESnormal; + switch (ch) { + case '[': + cons.vc_state = ESsquare; + return; + case 'M': + scroll1(); + return; + default: + printk("Unhandled escape code '%c'\n", ch); + return; + } + return; + case ESsquare: + for(cons.vc_npar = 0; cons.vc_npar < NPAR ; cons.vc_npar++) + cons.vc_par[cons.vc_npar] = 0; + cons.vc_npar = 0; + cons.vc_state = ESgetpars; + // Fall through + case ESgetpars: + if (ch == ';' && cons.vc_npar < NPAR - 1) { + cons.vc_npar++; + return; + } else if (ch >= '0' && ch <= '9') { + cons.vc_par[cons.vc_npar] *= 10; + cons.vc_par[cons.vc_npar] += ch - '0'; + return; + } else + cons.vc_state=ESgotpars; + // Fall through + case ESgotpars: + cons.vc_state = ESnormal; + switch(ch) { + case 'H': + case 'f': + if (cons.vc_par[0]) + cons.vc_par[0]--; + + if (cons.vc_par[1]) + cons.vc_par[1]--; + + cons.x = cons.vc_par[1]; + cons.y = cons.vc_par[0]; + return; + case 'J': + if (cons.vc_par[0] == 0 && (uint)cons.y < (uint)cons.h && + (uint)cons.x < (uint)cons.w) { + // erase from cursor to end of display + for (i = cons.x; i < cons.w; i++) + cons.buf[cons.y * cons.w + i] = ' '; + draw_line(cons.y); + for (j = cons.y + 1; j < cons.h; j++) { + for (i = 0; i < cons.w; i++) + cons.buf[j * cons.w + i] = ' '; + draw_line(j); + } + } + return; + case 'K': + switch (cons.vc_par[0]) { + case 0: /* erase from cursor to end of line */ + for (i = cons.x; i < cons.w; i++) + cons.buf[cons.y * cons.w + i] = ' '; + draw_line(cons.y); + return; + case 1: /* erase from start of line to cursor */ + for (i = 0; i <= cons.x; i++) + cons.buf[cons.y * cons.w + i] = ' '; + draw_line(cons.y); + return; + case 2: /* erase whole line */ + for (i = 0; i <= cons.w; i++) + cons.buf[cons.y * cons.w + i] = ' '; + draw_line(cons.y); + return; + default: + return; + } + return; + case 'M': + scroll1(); + return; + case 'm': + return; + case '@': + return; + default: + printk("Unhandled escape code '%c', par[%d, %d, %d, %d, %d]\n", + ch, cons.vc_par[0], cons.vc_par[1], cons.vc_par[2], + cons.vc_par[3], cons.vc_par[4]); + return; + } + return; + default: + cons.vc_state = ESnormal; + rec_char(ch, cons.x++, cons.y); + return; + } +} + int console_draw_str( const char *str ) { - static const char *ignore[] = { "[1;37m", "[2;40m", NULL }; - int ch, y, x, i; + int ch, y, x;
if( !cons.inited && console_init() ) return -1;
show_cursor(0); while( (ch=*str++) ) { - if( ch == 12 ) - continue; - if( ch == '\n' || cons.x >= cons.w ) { + do_con_trol(ch); + + if( cons.x >= cons.w ) { cons.x=0, cons.y++; - continue; } if( cons.y >= cons.h ) { for( y=0; y<cons.h-1; y++ ) @@ -187,21 +324,6 @@ cons.x = 0; scroll1(); } - if( ch == '\r' ) - continue; - if( ch == '\e' ) { - for( i=0; ignore[i] && strncmp(ignore[i], str, strlen(ignore[i])); i++ ) - ; - if( ignore[i] ) - str += strlen(ignore[i]); - continue; - } - if( ch == 8 ) { - if( cons.x ) - cons.x--; - continue; - } - rec_char( ch, cons.x++, cons.y ); } show_cursor(1); return 0;
-
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