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unix: add uv_guess_handle and uv_tty_get_winsize

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ry committed Sep 23, 2011
1 parent f9ad0a7 commit 03652596cfe150be1da7d988fdcc3e56106d318d
Showing with 88 additions and 0 deletions.
  1. +11 −0 include/uv.h
  2. +40 −0 src/unix/tty.c
  3. +12 −0 src/win/tty.c
  4. +25 −0 test/test-tty.c
@@ -624,6 +624,17 @@ int uv_tty_init(uv_loop_t*, uv_tty_t*, uv_file fd);
*/
int uv_tty_set_mode(uv_tty_t*, int mode);

/*
* Gets the current Window size. On success zero is returned.
*/
int uv_tty_get_winsize(uv_tty_t*, int* width, int* height);

/*
* Used to detect what type of stream should be used with a given file
* descriptor. Usually this will be used during initialization to guess the
* type of the stdio streams.
*/
uv_handle_type uv_guess_handle(uv_file file);

/*
* uv_pipe_t is a subclass of uv_stream_t
@@ -72,3 +72,43 @@ int uv_tty_set_mode(uv_tty_t* tty, int mode) {
int uv_is_tty(uv_file file) {
return isatty(file);
}


int uv_tty_get_winsize(uv_tty_t* tty, int* width, int* height) {
struct winsize ws;

if (ioctl(tty->fd, TIOCGWINSZ, &ws) < 0) {
uv_err_new(tty->loop, errno);
return -1;
}

*width = ws.ws_col;
*height = ws.ws_row;

return 0;
}


uv_handle_type uv_guess_handle(uv_file file) {
struct stat s;

if (file < 0) {
uv_err_new(NULL, EINVAL); /* XXX Need loop? */
return -1;
}

if (isatty(file)) {
return UV_TTY;
}

if (fstat(file, &s)) {
uv_err_new(NULL, errno); /* XXX Need loop? */
return -1;
}

if (!S_ISSOCK(s.st_mode) && !S_ISFIFO(s.st_mode)) {
return UV_FILE;
}

return UV_NAMED_PIPE;
}
@@ -42,3 +42,15 @@ int uv_is_tty(uv_file file) {
int r = GetConsoleMode((HANDLE)_get_osfhandle(file), &result);
return r ? 1 : 0;
}


int uv_tty_get_winsize(uv_tty_t* tty, int* width, int* height) {
assert(0 && "implement me");
return -1;
}


uv_handle_type uv_guess_handle(uv_file file) {
assert(0 && "implement me");
return UV_UNKNOWN_HANDLE;
}
@@ -23,10 +23,35 @@
#include "task.h"

TEST_IMPL(tty) {
int r, width, height;
uv_tty_t tty;
uv_loop_t* loop = uv_default_loop();

/*
* Not necessarally a problem if this assert goes off. E.G you are piping
* this test to a file. 0 == stdin.
*/
ASSERT(uv_is_tty(0) == 1);

r = uv_tty_init(uv_default_loop(), &tty, 0);
ASSERT(r == 0);

ASSERT(UV_TTY == uv_guess_handle(0));

r = uv_tty_get_winsize(&tty, &width, &height);
ASSERT(r == 0);

printf("width=%d height=%d\n", width, height);

/*
* Is it a safe assumption that most people have terminals larger than
* 10x10?
*/
ASSERT(width > 10);
ASSERT(height > 10);

uv_close((uv_handle_t*)&tty, NULL);

uv_run(loop);

return 0;

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