* and lets the user interact with it.
*
* To compile:
- * gcc -o boxshell boxshell.c $(rote-config --cflags --libs)
+ * gcc -o boxshell boxshell.c $(pkg-config madtty --cflags --libs)
*/
#include <ncurses.h>
-#include <stdio.h>
-#include <rote/rote.h>
-#include <signal.h>
-static unsigned char getout = 0;
-void sigchld(int signo) { getout = 1; }
-int my_custom_handler(RoteTerm *rt, const char *es);
-
-int screen_w, screen_h;
-WINDOW *term_win;
-
-int main() {
- RoteTerm *rt;
- int i, j, ch;
-
- signal(SIGCHLD, sigchld);
-
- initscr();
- noecho();
- start_color();
- raw();
- nodelay(stdscr, TRUE); /* prevents getch() from blocking; rather
- * it will return ERR when there is no
- * keypress available */
-
- keypad(stdscr, TRUE); /* necessary to use rote_vt_keypress */
- getmaxyx(stdscr, screen_h, screen_w);
-
- /* initialize the color pairs the way rote_vt_draw expects it. You might
- * initialize them differently, but in that case you would need
- * to supply a custom conversion function for rote_vt_draw to
- * call when setting attributes. The idea of this "default" mapping
- * is to map (fg,bg) to the color pair bg * 8 + 7 - fg. This way,
- * the pair (white,black) ends up mapped to 0, which means that
- * it does not need a color pair (since it is the default). Since
- * there are only 63 available color pairs (and 64 possible fg/bg
- * combinations), we really have to save 1 pair by assigning no pair
- * to the combination white/black. */
- for (i = 0; i < 8; i++) for (j = 0; j < 8; j++)
- if (i != 7 || j != 0)
- init_pair(j*8+7-i, i, j);
-
- /* paint the screen blue */
- attrset(COLOR_PAIR(32));
- for (i = 0; i < screen_h; i++) for (j = 0; j < screen_w; j++) addch(' ');
- refresh();
-
- /* create a window with a frame */
- term_win = newwin(22,72,1,4);
- wattrset(term_win, COLOR_PAIR(7*8+7-0)); /* black over white */
- wborder(term_win, 0, 0, 0, 0, 0, 0, 0, 0);
- mvwprintw(term_win, 0, 27, " Term In a Box ");
- wrefresh(term_win);
-
- /* create the terminal and have it run bash */
- rt = rote_vt_create(20, 70);
- rote_vt_forkpty(rt, "/bin/bash --login");
-
- /* add a sample custom escape sequence handler... say we want to handle
- * the sequence, say, \e{N}, which will change the application's background
- * color to N (where N is a number between 0 and 7). */
- rote_vt_install_handler(rt, my_custom_handler);
-
- /* keep reading keypresses from the user and passing them to the terminal;
- * also, redraw the terminal to the window at each iteration */
- ch = '\0';
- while (!getout) {
- rote_vt_draw(rt, term_win, 1, 1, NULL);
- wrefresh(term_win);
-
- ch = getch();
- if (ch != ERR)
- rote_vt_keypress(rt, ch); /* pass the keypress for handling */
- }
-
- endwin();
- return 0;
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <termios.h>
+#include <time.h>
+
+#include <madtty/madtty.h>
+
+static int getout = 0, sigwinch = 0;
+static int screen_w, screen_h;
+static WINDOW *term_win;
+static struct timeval const slice = { 0, 1000 * 1000 / 100 };
+
+void handler(int signo)
+{
+ switch (signo) {
+ case SIGCHLD:
+ getout = 1;
+ break;
+ case SIGWINCH:
+ sigwinch = 1;
+ break;
+ }
}
+static struct timeval timeval_add(struct timeval a, struct timeval b)
+{
+ int usec = a.tv_usec + b.tv_usec;
+ a.tv_sec += b.tv_sec;
+ while (usec > 1000 * 1000) {
+ a.tv_sec += 1;
+ usec -= 1000 * 1000;
+ }
+ a.tv_usec = usec;
+ return a;
+}
-int my_custom_handler(RoteTerm *rt, const char *es) {
- int color;
- int i, j;
-
- /* if the escape sequence does not begin with '{', we give up */
- if (*es != '{') return ROTE_HANDLERESULT_NOWAY;
-
- /* ok, now we know it begins with '{'. Now, if it does not end with '}',
- * it is not yet complete */
- if (es[strlen(es)-1] != '}') return ROTE_HANDLERESULT_NOTYET;
-
- /* ok, the sequence is complete */
- color = atoi(es + 1);
- if (color < 0 || color > 7) return false; /* don't recognize it */
-
- /* paint the background with that color */
- attrset(COLOR_PAIR(color * 8));
- move(0, 0);
- for (i = 0; i < screen_h; i++) for (j = 0; j < screen_w; j++) addch(' ');
- touchwin(stdscr);
- refresh();
-
- /* touch term_win to force it to do a full redraw next time */
- touchwin(term_win);
-
- /* and redraw the terminal window */
- wrefresh(term_win);
-
- /* escape sequence was handled ok */
- return ROTE_HANDLERESULT_OK;
+static int is_expired(struct timeval now, struct timeval expiry)
+{
+ return now.tv_sec > expiry.tv_sec
+ || (now.tv_sec == expiry.tv_sec && now.tv_usec > expiry.tv_usec);
}
+int main(void)
+{
+ madtty_t *rt;
+ int dirty = 0, pty;
+ struct timeval next;
+
+ signal(SIGCHLD, handler);
+ signal(SIGWINCH, handler);
+
+ madtty_initialize();
+ getmaxyx(stdscr, screen_h, screen_w);
+
+ /* create a window with a frame */
+ term_win = newwin(screen_h - 2, screen_w - 2, 1, 1);
+ rt = madtty_create(screen_h - 2, screen_w -2);
+ {
+ const char *path = getenv("SHELL") ?: "/bin/sh";
+ const char *args[] = { path, "--login", NULL};
+
+ madtty_forkpty(rt, path, args, &pty);
+ }
+
+ /* keep reading keypresses from the user and passing them to the terminal;
+ * also, redraw the terminal to the window at each iteration */
+ gettimeofday(&next, NULL);
+ while (!getout) {
+ struct timeval tv = { 0, 1000 * 1000 / 100 };
+ fd_set rfds;
+ int ch;
+
+ FD_ZERO(&rfds);
+ FD_SET(0, &rfds);
+ FD_SET(pty, &rfds);
+
+ if (select(pty + 1, &rfds, NULL, NULL, &tv) > 0) {
+ if (FD_ISSET(pty, &rfds)) {
+ madtty_process(rt);
+ dirty = 1;
+ }
+ }
+
+ if (sigwinch) {
+ int fd, cols = -1, rows = -1;
+ struct winsize w;
+
+ if ((fd = open("/dev/tty", O_RDONLY)) != -1) {
+ if (ioctl(fd, TIOCGWINSZ, &w) != -1) {
+ rows = w.ws_row;
+ cols = w.ws_col;
+ }
+ close(fd);
+ }
+ if (rows <= 0) {
+ rows = atoi(getenv("LINES") ?: "24");
+ }
+ if (cols <= 0) {
+ cols = atoi(getenv("COLUMNS") ?: "80");
+ }
+
+ resizeterm(rows, cols);
+ madtty_resize(rt, rows - 2, cols - 2);
+ wresize(term_win, rows - 2, cols - 2);
+ sigwinch = 0;
+ erase();
+ }
+
+ while ((ch = getch()) != ERR) {
+ madtty_keypress(rt, ch); /* pass the keypress for handling */
+ dirty = 1;
+ }
+
+ gettimeofday(&tv, NULL);
+ if (dirty && is_expired(tv, next)) {
+ madtty_draw(rt, term_win, 0, 0);
+ wrefresh(term_win);
+ dirty = 0;
+ next = timeval_add(tv, slice);
+ }
+ }
+
+ endwin();
+ return 0;
+}
projects / apps / madtty.git / blobdiff