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#include "vterm.h"
#include <camellia/syscalls.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
struct point cursor = {0};
void in_char(char c) {
switch (c) {
case '\n':
cursor.x = 0;
cursor.y++;
break;
case '\b':
if (cursor.x > 0) cursor.x--;
break;
default:
font_blit(c, cursor.x, cursor.y);
cursor.x++;
}
if (cursor.x * font.w >= fb.width) {
cursor.x = 0;
cursor.y++;
}
while (cursor.y * font.h >= fb.height) scroll();
}
int main();
void fb_setup(void) {
#define BASEPATH "/kdev/video/"
char path[64], *spec;
size_t pos;
FILE *f;
f = fopen(BASEPATH, "r");
if (!f) {
eprintf("couldn't open %s", BASEPATH);
exit(1);
}
pos = strlen(BASEPATH);
memcpy(path, BASEPATH, pos);
spec = path + pos;
fread(spec, 1, sizeof(path) - pos, f);
/* assumes the read went correctly */
fclose(f);
fb_fd = _syscall_open(path, strlen(path), 0);
if (fb_fd < 0) {
eprintf("failed to open %s", path);
exit(1);
}
fb.width = strtol(spec, &spec, 0);
if (*spec++ != 'x') { eprintf("bad filename format"); exit(1); }
fb.height = strtol(spec, &spec, 0);
if (*spec++ != 'x') { eprintf("bad filename format"); exit(1); }
fb.bpp = strtol(spec, &spec, 0);
fb.len = _syscall_getsize(fb_fd);
fb.pitch = fb.len / fb.height;
fb.b = malloc(fb.len);
if (fb.bpp != 32) {
eprintf("unsupported format %ux%ux%u", fb.width, fb.height, fb.bpp);
exit(1);
}
}
int main(void) {
fb_setup();
font_load("/init/font.psf");
static char buf[512];
struct fs_wait_response res;
while (!_syscall_fs_wait(buf, sizeof buf, &res)) {
switch (res.op) {
case VFSOP_OPEN:
// TODO check path
_syscall_fs_respond(NULL, 0, 0);
break;
case VFSOP_WRITE:
if (res.flags) {
_syscall_fs_respond(NULL, -1, 0);
} else {
for (size_t i = 0; i < res.len; i++)
in_char(buf[i]);
flush();
_syscall_fs_respond(NULL, res.len, 0);
}
break;
default:
_syscall_fs_respond(NULL, -1, 0);
break;
}
}
return 1;
}
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