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#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <assert.h>
#include <SharedGraphics/Font.h>
#include <SharedGraphics/GraphicsBitmap.h>
#include <SharedGraphics/Painter.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include <LibC/gui.h>
#include "Terminal.h"
#include <Kernel/KeyCode.h>
static void make_shell(int ptm_fd)
{
pid_t pid = fork();
if (pid == 0) {
const char* tty_name = ptsname(ptm_fd);
if (!tty_name) {
perror("ptsname");
exit(1);
}
int rc = 0;
close(ptm_fd);
int pts_fd = open(tty_name, O_RDWR);
dbgprintf("*** In child (%d), opening slave pty %s, pts_fd=%d\n", getpid(), tty_name, pts_fd);
rc = ioctl(0, TIOCNOTTY);
if (rc < 0) {
perror("ioctl(TIOCNOTTY)");
exit(1);
}
close(0);
close(1);
close(2);
dup2(pts_fd, 0);
dup2(pts_fd, 1);
dup2(pts_fd, 2);
close(pts_fd);
rc = ioctl(0, TIOCSCTTY);
if (rc < 0) {
perror("ioctl(TIOCSCTTY)");
exit(1);
}
rc = execvp("/bin/sh", nullptr);
if (rc < 0) {
perror("execve");
exit(1);
}
ASSERT_NOT_REACHED();
} else {
dbgprintf("*** In parent, child is %d\n", pid);
}
}
static int max(int a, int b)
{
return a > b ? a : b;
}
int main(int, char**)
{
int ptm_fd = open("/dev/ptmx", O_RDWR);
if (ptm_fd < 0) {
perror("open(ptmx)");
return 1;
}
make_shell(ptm_fd);
int event_fd = open("/dev/gui_events", O_RDONLY);
if (event_fd < 0) {
perror("open");
return 1;
}
Terminal terminal;
terminal.create_window();
terminal.update();
for (;;) {
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(ptm_fd, &rfds);
FD_SET(event_fd, &rfds);
int nfds = select(max(ptm_fd, event_fd) + 1, &rfds, nullptr, nullptr, nullptr);
if (nfds < 0) {
dbgprintf("Terminal(%u) select() failed :( errno=%d\n", getpid(), errno);
return 1;
}
if (FD_ISSET(ptm_fd, &rfds)) {
byte buffer[4096];
ssize_t nread = read(ptm_fd, buffer, sizeof(buffer));
if (nread < 0) {
dbgprintf("Terminal read error: %s\n", strerror(errno));
perror("read(ptm)");
continue;
}
if (nread == 0) {
dbgprintf("Terminal: EOF on master pty, closing.\n");
break;
}
for (ssize_t i = 0; i < nread; ++i)
terminal.on_char(buffer[i]);
terminal.update();
}
if (FD_ISSET(event_fd, &rfds)) {
GUI_Event event;
ssize_t nread = read(event_fd, &event, sizeof(event));
if (nread < 0) {
perror("read(event)");
return 1;
}
assert(nread != 0);
assert(nread == sizeof(event));
if (event.type == GUI_Event::Type::Paint) {
terminal.paint();
} else if (event.type == GUI_Event::Type::KeyDown) {
char ch = event.key.character;
if (event.key.ctrl) {
if (ch >= 'a' && ch <= 'z') {
ch = ch - 'a' + 1;
} else if (ch == '\\') {
ch = 0x1c;
}
}
switch (event.key.key) {
case KeyCode::Key_Up:
write(ptm_fd, "\033[A", 3);
break;
case KeyCode::Key_Down:
write(ptm_fd, "\033[B", 3);
break;
case KeyCode::Key_Right:
write(ptm_fd, "\033[C", 3);
break;
case KeyCode::Key_Left:
write(ptm_fd, "\033[D", 3);
break;
default:
write(ptm_fd, &ch, 1);
}
} else if (event.type == GUI_Event::Type::WindowActivated) {
terminal.set_in_active_window(true);
} else if (event.type == GUI_Event::Type::WindowDeactivated) {
terminal.set_in_active_window(false);
}
}
}
return 0;
}
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