384 lines
8.1 KiB
C
Executable File
384 lines
8.1 KiB
C
Executable File
#include "vga.h"
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#include "video.h"
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#include "stdarg.h"
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console vc[8] = {
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{0x07, 0, 0, 0, 0, 0, 0, 0}
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,
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{0x07, 0, 0, 0, 0, 0, 0, 0}
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,
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{0x07, 0, 0, 0, 0, 0, 0, 0}
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,
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{0x07, 0, 0, 0, 0, 0, 0, 0}
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,
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{0x07, 0, 0, 0, 0, 0, 0, 0}
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,
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{0x07, 0, 0, 0, 0, 0, 0, 0}
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,
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{0x07, 0, 0, 0, 0, 0, 0, 0}
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,
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{0x07, 0, 0, 0, 0, 0, 0, 0}
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};
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u8 usedvc = 0;
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/*******************************************************************************/
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/* Fixe l'attribut courant */
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void setattrib(u8 att)
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{
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static const u8 ansitovga[] = {
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0, 4, 2, 6, 1, 5, 3, 7
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};
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u8 tempattr;
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tempattr = vc[usedvc].attrib;
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if (att == 0)
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tempattr = 0x07; /* Couleur Grise sur fond noir */
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else if (att == 5)
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tempattr |= 0x80;
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else if (att == 7)
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tempattr = ((tempattr & 0x0F) << 4) + ((tempattr & 0xF0) >> 4);
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else if (att == 8)
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tempattr = 0;
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else if (att == 1)
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tempattr |= 0x08; /* Forte intensité */
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else if (att >= 30 && att <= 37) {
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att = ansitovga[att - 30];
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tempattr = (tempattr & ~0x07) | att; /* couleur de premier plan */
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} else if (att >= 40 && att <= 47) {
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att = ansitovga[att - 40] << 4;
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tempattr = (tempattr & ~0x70) | att; /* couleur de fond */
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}
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vc[usedvc].attrib = tempattr;
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}
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/*******************************************************************************/
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/* gere l'ansi */
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bool makeansi(u8 c)
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{
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/* state machine to handle the escape sequences */
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switch (vc[usedvc].ansi) {
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case 0:
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/* ESC -- next state */
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if (c == 0x1B) {
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vc[usedvc].ansi++;
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return 1; /* "I handled it" */
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}
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break;
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/* ESC */
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case 1:
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if (c == '[') {
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vc[usedvc].ansi++;
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vc[usedvc].param1 = 0;
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return 1;
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}
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break;
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/* ESC[ */
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case 2:
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if (isdigit(c)) {
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vc[usedvc].param1 = vc[usedvc].param1 * 10 + c - '0';
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return 1;
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} else if (c == ';') {
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vc[usedvc].ansi++;
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vc[usedvc].param2 = 0;
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return 1;
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}
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/* ESC[2J -- efface l'ecran */
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else if (c == 'J') {
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if (vc[usedvc].param1 == 2) {
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fill(vc[usedvc].attrib);
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vc[usedvc].cursX = 0;
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vc[usedvc].cursY = 0;
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gotoscr(0, 0);
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vc[usedvc].ansi = 0;
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return 1;
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}
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}
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/* ESC[num1m -- met l'attribut num1 */
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else if (c == 'm') {
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setattrib(vc[usedvc].param1);
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vc[usedvc].ansi = 0;
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return 1;
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}
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/* ESC[num1A -- bouge le curseur de num1 vers le haut */
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else if (c == 'A') {
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vc[usedvc].cursY -= vc[usedvc].param1;
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if (vc[usedvc].cursY < 0)
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vc[usedvc].cursY = 0;
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vc[usedvc].ansi = 0;
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gotoscr(vc[usedvc].cursX, vc[usedvc].cursY);
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return 1;
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}
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/* ESC[num1B -- bouge le curseur de num1 vers le bas */
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else if (c == 'B') {
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vc[usedvc].cursY += vc[usedvc].param1;
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if (vc[usedvc].cursY >= getyres() - 1)
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vc[usedvc].cursY = getyres();
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vc[usedvc].ansi = 0;
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gotoscr(vc[usedvc].cursX, vc[usedvc].cursY);
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return 1;
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}
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/* ESC[num1D -- bouge le curseur de num1 vers la gauche */
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else if (c == 'D') {
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vc[usedvc].cursX -= vc[usedvc].param1;
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if (vc[usedvc].cursX < 0)
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vc[usedvc].cursX = 0;
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vc[usedvc].ansi = 0;
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gotoscr(vc[usedvc].cursX, vc[usedvc].cursY);
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return 1;
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}
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/* ESC[num1C -- bouge le curseur de num1 vers la droite */
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else if (c == 'C') {
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vc[usedvc].cursX += vc[usedvc].param1;
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if (vc[usedvc].cursX >= getxres() - 1)
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vc[usedvc].cursX = getxres();
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vc[usedvc].ansi = 0;
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gotoscr(vc[usedvc].cursX, vc[usedvc].cursY);
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return 1;
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}
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break;
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/* ESC[num1; */
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case 3:
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if (isdigit(c)) {
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vc[usedvc].param2 = vc[usedvc].param2 * 10 + c - '0';
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return 1;
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} else if (c == ';') {
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vc[usedvc].ansi++;
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vc[usedvc].param3 = 0;
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return 1;
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}
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/* ESC[num1;num2H ou ESC[num1;num2f-- bouge le curseur en num1,num2 */
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else if ((c == 'H') || (c == 'f')) {
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/* Remet la position du curseur matériel a num1,num2 */
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gotoscr(vc[usedvc].param2, vc[usedvc].param1);
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/* Remet la position du curseur logiciel a num1,num2 */
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vc[usedvc].cursX = vc[usedvc].param2;
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vc[usedvc].cursY = vc[usedvc].param1;
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vc[usedvc].ansi = 0;
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return 1;
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}
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/* ESC[num1;num2m -- met les attributs num1,num2 */
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else if (c == 'm') {
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setattrib(vc[usedvc].param1);
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setattrib(vc[usedvc].param2);
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vc[usedvc].ansi = 0;
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return 1;
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}
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break;
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/* ESC[num1;num2;num3 */
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case 4:
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if (isdigit(c)) {
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vc[usedvc].param3 = vc[usedvc].param3 * 10 + c - '0';
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return 1;
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}
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/* ESC[num1;num2;num3m -- met les attributs num1,num2,num3 */
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else if (c == 'm') {
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setattrib(vc[usedvc].param1);
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setattrib(vc[usedvc].param2);
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setattrib(vc[usedvc].param3);
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vc[usedvc].ansi = 0;
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return 1;
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}
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break;
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/* Mauvais etat >> reset */
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default:
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vc[usedvc].ansi = 0;
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break;
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}
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vc[usedvc].ansi = 0;
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return 0; /* Ansi fini ;) */
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}
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/*******************************************************************************/
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/* Change la console en cours d'utilisation */
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void changevc(u8 avc)
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{
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usedvc = avc;
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showpage(usedvc);
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setpage(usedvc);
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gotoscr(vc[usedvc].cursX, vc[usedvc].cursY);
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}
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/*******************************************************************************/
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/* affiche un caractère a l'écran */
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void putchar(u8 thechar)
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{
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showpage(usedvc);
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setpage(usedvc);
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if (makeansi(thechar))
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return;
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switch (thechar) {
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case 0x11:
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if (vc[usedvc].cursY > 0)
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vc[usedvc].cursY--;
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break;
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case 0x12:
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if (vc[usedvc].cursY < getyres() - 1)
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vc[usedvc].cursY++;
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break;
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case 0x13:
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if (vc[usedvc].cursX > 0)
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vc[usedvc].cursX--;
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break;
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case 0x14:
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if (vc[usedvc].cursX < getxres() - 1)
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vc[usedvc].cursX++;
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break;
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case 0x2:
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vc[usedvc].cursX = 0;
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vc[usedvc].cursY = 0;
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break;
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case 0x3:
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vc[usedvc].cursX = 0;
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vc[usedvc].cursY = getyres() - 1;
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break;
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case 0x19:
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vc[usedvc].cursX = getxres() - 1;
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break;
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case '\b':
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if (vc[usedvc].cursX == 0) {
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if (vc[usedvc].cursY > 0) {
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vc[usedvc].cursX = getxres() - 1;
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vc[usedvc].cursY--;
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}
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} else {
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vc[usedvc].cursX--;
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}
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showchar(vc[usedvc].cursX, vc[usedvc].cursY, ' ',
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vc[usedvc].attrib);
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break;
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case '\t':
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vc[usedvc].cursX = (vc[usedvc].cursX + 8) & ~(8 - 1);
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break;
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case '\n':
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vc[usedvc].cursX = 0;
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break;
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case '\r':
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vc[usedvc].cursX = 0;
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vc[usedvc].cursY++;
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break;
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default:
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if (thechar >= ' ') {
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showchar(vc[usedvc].cursX, vc[usedvc].cursY, thechar,
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vc[usedvc].attrib);
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vc[usedvc].cursX++;
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}
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break;
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}
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if (vc[usedvc].cursX >= getxres()) {
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vc[usedvc].cursX = 0;
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vc[usedvc].cursY++;
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}
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if (vc[usedvc].cursY >= getyres()) {
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scroll(1, vc[usedvc].attrib);
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vc[usedvc].cursY = getyres() - 1;
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}
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gotoscr(vc[usedvc].cursX, vc[usedvc].cursY);
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}
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/*******************************************************************************/
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/* affiche une chaine de caractère a l'écran */
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void print(u8 * string)
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{
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u8 *source;
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source = string;
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while (*source != 0) {
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putchar(*source++);
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}
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}
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/*******************************************************************************/
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/* affiche une chaine de caractère formaté a l'ecran */
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void printf(const u8 * string, ...)
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{
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va_list ap;
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u8 buffer[50];
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u8 *pointer;
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u8 radix;
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bool signe;
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long num;
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va_start(ap, string);
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while (*string != 0) {
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if (*string != '%')
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putchar(*string);
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else {
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switch (*++string) {
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case 'c':
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putchar(va_arg(ap, int));
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break;
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case 'u':
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radix = 10;
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signe = 0;
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showstring:
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num = va_arg(ap, int);
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pointer = buffer + 50 - 1;
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*pointer = '\0';
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if ((signe == 1) && (num < 0)) {
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num = -num;
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signe++;
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}
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do {
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unsigned long temp;
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temp = (unsigned long)num % radix;
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pointer--;
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if (temp < 10)
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*pointer = temp + '0';
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else
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*pointer = temp - 10 + 'a';
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num = (unsigned long)num / radix;
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}
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while (num != 0);
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if (signe > 1)
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*(--pointer) = '-';
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while (*pointer != 0)
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putchar(*pointer++);
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break;
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case 'o':
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radix = 8;
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signe = 0;
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goto showstring;
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case 'd':
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case 'i':
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radix = 10;
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signe = 1;
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goto showstring;
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case 'x':
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radix = 16;
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signe = 0;
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goto showstring;
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case 's':
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pointer = va_arg(ap, u8 *);
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if (!pointer)
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pointer = "(null)";
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while (*pointer != 0)
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putchar(*pointer++);
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break;
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case '%':
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putchar('%');
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break;
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default:
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putchar(va_arg(ap, int));
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break;
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}
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}
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string++;
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}
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va_end(ap);
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}
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/*******************************************************************************/
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