Files
xv6-custom-os/screen.c
2023-01-13 17:37:43 +00:00

104 lines
2.6 KiB
C

#include "types.h"
#include "user.h"
int main(int argc, char *argv[]) {
int pid;
int selopt = getpid() % 10;
int bgcol = 0x4F00;
char title[20];
int accepttitle = 0;
int currenttitlelen = 0;
for (int i = 1; i < argc; i++) {
if (strcmp(argv[i], "-bg") == 0)
{
accepttitle = 0;
selopt = atoi(argv[i + 1]);
}
else if (strcmp(argv[i], "-t") == 0)
{
accepttitle = 1;
}
else if (strcmp(argv[i], "-help") == 0)
{
printf(1, "Creates a new virtual console.\n");
printf(1, "Options:\n");
printf(1, "-bg [0 - 9] : Sets a background preset for the title bar.\n");
printf(1, "-t [String] : Sets a custom title for the console.\n");
exit();
return 0;
}
// Setup the title, it adds the space seperated strings to the title
else
{
if (accepttitle)
{
if (currenttitlelen > 0)
{
title[currenttitlelen] = ' ';
currenttitlelen++;
}
for (int x = 0; x <= sizeof(argv[i]); x++)
{
title[currenttitlelen] = argv[i][x];
currenttitlelen++;
if (currenttitlelen >= 20)
{
accepttitle = 0;
break;
}
}
}
}
}
// Set the variable to the selected bg/fg preset option
switch(selopt)
{
case 1:
bgcol = 0x1F00;
break;
case 2:
bgcol = 0x2F00;
break;
case 3:
bgcol = 0x3F00;
break;
case 4:
bgcol = 0x5F00;
break;
case 5:
bgcol = 0xF000;
break;
case 6:
bgcol = 0x8F00;
break;
case 7:
bgcol = 0x9F00;
break;
case 8:
bgcol = 0xAF00;
break;
case 9:
bgcol = 0xCF00;
break;
}
// Fork into a new process and create the screen
pid = fork();
if (pid < 0) {
printf(1, "screen: fork failed\n");
}
if (pid == 0) {
if (screen(title, bgcol) != 0)
{
exec("sh", argv);
printf(1, "screen: exec sh failed\n");
}
else
{
}
}
exit();
}