mirror of
https://github.com/neovim/neovim.git
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115 lines
2.7 KiB
C
115 lines
2.7 KiB
C
#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <uv.h>
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#ifdef _WIN32
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#include <windows.h>
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bool owns_tty(void)
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{
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HWND consoleWnd = GetConsoleWindow();
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DWORD dwProcessId;
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GetWindowThreadProcessId(consoleWnd, &dwProcessId);
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return GetCurrentProcessId() == dwProcessId;
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}
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#else
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bool owns_tty(void)
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{
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// TODO: Check if the process is the session leader
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return true;
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}
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#endif
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#define is_terminal(stream) (uv_guess_handle(fileno(stream)) == UV_TTY)
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#define BUF_SIZE 0xfff
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static void walk_cb(uv_handle_t *handle, void *arg) {
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if (!uv_is_closing(handle)) {
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uv_close(handle, NULL);
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}
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}
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static void sigwinch_cb(uv_signal_t *handle, int signum)
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{
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int width, height;
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uv_tty_t *tty = handle->data;
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uv_tty_get_winsize(tty, &width, &height);
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fprintf(stderr, "screen resized. rows: %d, columns: %d\n", height, width);
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}
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static void sigint_cb(uv_signal_t *handle, int signum)
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{
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bool *interrupted = handle->data;
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if (*interrupted) {
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uv_walk(uv_default_loop(), walk_cb, NULL);
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return;
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}
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*interrupted = true;
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fprintf(stderr, "interrupt received, press again to exit\n");
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}
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static void alloc_cb(uv_handle_t *handle, size_t suggested, uv_buf_t *buf)
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{
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buf->len = BUF_SIZE;
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buf->base = malloc(BUF_SIZE);
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}
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static void read_cb(uv_stream_t *stream, ssize_t cnt, const uv_buf_t *buf)
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{
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if (cnt <= 0) {
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uv_read_stop(stream);
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return;
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}
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fprintf(stderr, "received data: ");
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uv_loop_t write_loop;
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uv_loop_init(&write_loop);
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uv_tty_t out;
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uv_tty_init(&write_loop, &out, 1, 0);
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uv_write_t req;
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uv_buf_t b = {.base = buf->base, .len = buf->len};
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uv_write(&req, (uv_stream_t *)&out, &b, 1, NULL);
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uv_run(&write_loop, UV_RUN_DEFAULT);
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uv_close((uv_handle_t *)&out, NULL);
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uv_run(&write_loop, UV_RUN_DEFAULT);
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if (uv_loop_close(&write_loop)) {
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abort();
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}
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free(buf->base);
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}
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int main(int argc, char **argv)
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{
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if (!is_terminal(stdin)) {
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fprintf(stderr, "stdin is not a terminal\n");
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exit(2);
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}
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if (!is_terminal(stdout)) {
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fprintf(stderr, "stdout is not a terminal\n");
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exit(2);
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}
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if (!is_terminal(stderr)) {
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fprintf(stderr, "stderr is not a terminal\n");
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exit(2);
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}
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bool interrupted = false;
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fprintf(stderr, "tty ready\n");
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uv_tty_t tty;
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uv_tty_init(uv_default_loop(), &tty, fileno(stderr), 1);
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uv_read_start((uv_stream_t *)&tty, alloc_cb, read_cb);
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uv_signal_t sigwinch_watcher, sigint_watcher;
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uv_signal_init(uv_default_loop(), &sigwinch_watcher);
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sigwinch_watcher.data = &tty;
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uv_signal_start(&sigwinch_watcher, sigwinch_cb, SIGWINCH);
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uv_signal_init(uv_default_loop(), &sigint_watcher);
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sigint_watcher.data = &interrupted;
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uv_signal_start(&sigint_watcher, sigint_cb, SIGINT);
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uv_run(uv_default_loop(), UV_RUN_DEFAULT);
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fprintf(stderr, "tty done\n");
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}
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