1 files changed, 141 insertions, 0 deletions
diff --git a/src/waypad.c b/src/waypad.c
new file mode 100644
index 0000000..ffbe691
--- /dev/null
+++ b/src/waypad.c
@@ -0,0 +1,141 @@
+#define _XOPEN_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <spawn.h>
+#include <unistd.h>
+#include <err.h>
+#include <errno.h>
+#include <sys/poll.h>
+
+#include <libevdev/libevdev.h>
+
+#include "waypad.h"
+#include "util.h"
+
+bool verbose = false;
+
+static void cleanup() {
+	free_gamepads();
+}
+
+extern char **environ;
+
+void handle_key_event(struct gamepad *pad, struct action *action, bool pressed) {
+	switch (action->type) {
+	case ACTION_NONE: return;
+	case ACTION_EXEC:
+		if (!pressed)
+			return;
+		pid_t pid;
+		if ((errno = posix_spawnp(&pid, action->exec[0], NULL, NULL, action->exec, environ)) != 0)
+			warn("failed to exec %s", action->exec[0]);
+		return;
+	case ACTION_KEY:
+		if (pressed)
+			uinput_keyboard_press(action->key.mod, action->key.code);
+		else
+			uinput_keyboard_release(action->key.mod, action->key.code);
+		break;
+	case ACTION_CLICK:
+		if (pressed)
+			uinput_mouse_press(action->click);
+		else
+			uinput_mouse_release(action->click);
+		break;
+	case ACTION_MODE:
+		if (!pressed)
+			break;
+		if (action->mode == pad->modes.current) {
+			warnx("switching to base mode");
+			pad->modes.current = &pad->modes.base;
+		} else {
+			warnx("switching to mode %s", action->mode->name);
+			pad->modes.current = action->mode;
+		}
+		break;
+	default:
+		todo();
+		break;
+	}
+}
+
+void handle_axis_event(struct action *action, int input) {
+	int value = input - action->old_value;
+	action->old_value = input;
+
+	if (input > 1500 || input < -1500)
+		return;
+
+	switch (action->type) {
+	case ACTION_NONE:
+		return;
+	case ACTION_MOUSE:
+		switch (action->mouse) {
+		case MOUSE_X:
+			uinput_mouse_rel_move(value / 100, 0);
+			break;
+		case MOUSE_Y:
+			uinput_mouse_rel_move(0, -(value / 100));
+			break;
+		}
+		return;
+	default:
+		todo();
+		return;
+	}
+}
+
+void handle_event(struct gamepad *pad, struct input_event ev) {
+	struct action *action;
+
+	switch (ev.type) {
+	case EV_KEY:
+		action = &pad->modes.current->buttons[pad->map.button[ev.code - BTN_MISC]];
+		handle_key_event(pad, action, ev.value);
+		return;
+	case EV_ABS:
+		action = &pad->modes.current->buttons[pad->map.axis[ev.code]];
+		handle_axis_event(action, ev.value);
+		return;
+	}
+}
+
+int main(int argc, char **argv) {
+	if (argc < 2)
+		errx(EXIT_FAILURE, "usage: %s <config>", argv[0]);
+	if (!load_gamepads())
+		errx(EXIT_FAILURE, "failed to load gamepads");
+	if (!load_config(argv[1]))
+		errx(EXIT_FAILURE, "failed to load configuration file");
+	if (!uinput_mouse_init())
+		errx(EXIT_FAILURE, "failed to create uinput mouse");
+	if (!uinput_keyboard_init())
+		errx(EXIT_FAILURE, "failed to create uinput keyboard");
+
+	atexit(cleanup);
+
+	struct pollfd fds[gamepads.len];
+	for (size_t i = 0; i < gamepads.len; i++) {
+		fds[i] = (struct pollfd) {
+			.fd = libevdev_get_fd(gamepads.loaded[i].dev),
+			.events = POLLIN
+		};
+	}
+
+	while (true) {
+		if (poll(fds, gamepads.len, -1) < 0)
+			continue;
+
+		for (size_t i = 0; i < gamepads.len; i++) {
+			struct input_event ev;
+			int rc;
+			if ((rc = libevdev_next_event(gamepads.loaded[i].dev, LIBEVDEV_READ_FLAG_NORMAL, &ev)) == 0)
+				handle_event(&gamepads.loaded[i], ev);
+			else if (rc != -EAGAIN)
+				warnx("libevdev next event: %s.", strerror(-rc));
+		}
+	}
+
+	return 0;
+}