glib/functions.rs
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// Take a look at the license at the top of the repository in the LICENSE file.
pub use crate::auto::functions::*;
#[cfg(not(windows))]
use std::boxed::Box as Box_;
#[cfg(not(windows))]
use std::mem;
#[cfg(not(windows))]
#[cfg(feature = "v2_58")]
use std::os::unix::io::AsRawFd;
#[cfg(not(windows))]
use std::os::unix::io::{FromRawFd, IntoRawFd, RawFd};
use std::ptr;
// #[cfg(windows)]
// #[cfg(feature = "v2_58")]
// use std::os::windows::io::AsRawHandle;
use crate::{ffi, translate::*, ChecksumType, GStr};
#[cfg(not(windows))]
use crate::{Error, Pid, SpawnFlags};
#[cfg(feature = "v2_58")]
#[cfg(not(windows))]
#[cfg_attr(docsrs, doc(cfg(all(feature = "v2_58", not(windows)))))]
#[allow(clippy::too_many_arguments)]
#[doc(alias = "g_spawn_async_with_fds")]
pub fn spawn_async_with_fds<P: AsRef<std::path::Path>, T: AsRawFd, U: AsRawFd, V: AsRawFd>(
working_directory: P,
argv: &[&str],
envp: &[&str],
flags: SpawnFlags,
child_setup: Option<Box_<dyn FnOnce() + 'static>>,
stdin_fd: T,
stdout_fd: U,
stderr_fd: V,
) -> Result<Pid, Error> {
let child_setup_data: Box_<Option<Box_<dyn FnOnce() + 'static>>> = Box_::new(child_setup);
unsafe extern "C" fn child_setup_func(user_data: ffi::gpointer) {
let callback: Box_<Option<Box_<dyn FnOnce() + 'static>>> =
Box_::from_raw(user_data as *mut _);
let callback = (*callback).expect("cannot get closure...");
callback()
}
let child_setup = if child_setup_data.is_some() {
Some(child_setup_func as _)
} else {
None
};
let super_callback0: Box_<Option<Box_<dyn FnOnce() + 'static>>> = child_setup_data;
unsafe {
let mut child_pid = mem::MaybeUninit::uninit();
let mut error = ptr::null_mut();
let _ = ffi::g_spawn_async_with_fds(
working_directory.as_ref().to_glib_none().0,
argv.to_glib_none().0,
envp.to_glib_none().0,
flags.into_glib(),
child_setup,
Box_::into_raw(super_callback0) as *mut _,
child_pid.as_mut_ptr(),
stdin_fd.as_raw_fd(),
stdout_fd.as_raw_fd(),
stderr_fd.as_raw_fd(),
&mut error,
);
let child_pid = from_glib(child_pid.assume_init());
if error.is_null() {
Ok(child_pid)
} else {
Err(from_glib_full(error))
}
}
}
// #[cfg(feature = "v2_58")]
// #[cfg(windows)]
// pub fn spawn_async_with_fds<
// P: AsRef<std::path::Path>,
// T: AsRawHandle,
// U: AsRawHandle,
// V: AsRawHandle,
// >(
// working_directory: P,
// argv: &[&str],
// envp: &[&str],
// flags: SpawnFlags,
// child_setup: Option<Box_<dyn FnOnce() + 'static>>,
// stdin_fd: T,
// stdout_fd: U,
// stderr_fd: V,
// ) -> Result<Pid, Error> {
// let child_setup_data: Box_<Option<Box_<dyn FnOnce() + 'static>>> = Box_::new(child_setup);
// unsafe extern "C" fn child_setup_func<P: AsRef<std::path::Path>>(
// user_data: ffi::gpointer,
// ) {
// let callback: Box_<Option<Box_<dyn FnOnce() + 'static>>> =
// Box_::from_raw(user_data as *mut _);
// let callback = (*callback).expect("cannot get closure...");
// callback()
// }
// let child_setup = if child_setup_data.is_some() {
// Some(child_setup_func::<P> as _)
// } else {
// None
// };
// let super_callback0: Box_<Option<Box_<dyn FnOnce() + 'static>>> = child_setup_data;
// unsafe {
// let mut child_pid = mem::MaybeUninit::uninit();
// let mut error = ptr::null_mut();
// let _ = ffi::g_spawn_async_with_fds(
// working_directory.as_ref().to_glib_none().0,
// argv.to_glib_none().0,
// envp.to_glib_none().0,
// flags.into_glib(),
// child_setup,
// Box_::into_raw(super_callback0) as *mut _,
// child_pid.as_mut_ptr(),
// stdin_fd.as_raw_handle() as usize as _,
// stdout_fd.as_raw_handle() as usize as _,
// stderr_fd.as_raw_handle() as usize as _,
// &mut error,
// );
// let child_pid = from_glib(child_pid.assume_init());
// if error.is_null() {
// Ok(child_pid)
// } else {
// Err(from_glib_full(error))
// }
// }
// }
#[cfg(not(windows))]
#[cfg_attr(docsrs, doc(cfg(not(windows))))]
#[doc(alias = "g_spawn_async_with_pipes")]
pub fn spawn_async_with_pipes<
P: AsRef<std::path::Path>,
T: FromRawFd,
U: FromRawFd,
V: FromRawFd,
>(
working_directory: P,
argv: &[&std::path::Path],
envp: &[&std::path::Path],
flags: SpawnFlags,
child_setup: Option<Box_<dyn FnOnce() + 'static>>,
) -> Result<(Pid, T, U, V), Error> {
let child_setup_data: Box_<Option<Box_<dyn FnOnce() + 'static>>> = Box_::new(child_setup);
unsafe extern "C" fn child_setup_func(user_data: ffi::gpointer) {
let callback: Box_<Option<Box_<dyn FnOnce() + 'static>>> =
Box_::from_raw(user_data as *mut _);
let callback = (*callback).expect("cannot get closure...");
callback()
}
let child_setup = if child_setup_data.is_some() {
Some(child_setup_func as _)
} else {
None
};
let super_callback0: Box_<Option<Box_<dyn FnOnce() + 'static>>> = child_setup_data;
unsafe {
let mut child_pid = mem::MaybeUninit::uninit();
let mut standard_input = mem::MaybeUninit::uninit();
let mut standard_output = mem::MaybeUninit::uninit();
let mut standard_error = mem::MaybeUninit::uninit();
let mut error = ptr::null_mut();
let _ = ffi::g_spawn_async_with_pipes(
working_directory.as_ref().to_glib_none().0,
argv.to_glib_none().0,
envp.to_glib_none().0,
flags.into_glib(),
child_setup,
Box_::into_raw(super_callback0) as *mut _,
child_pid.as_mut_ptr(),
standard_input.as_mut_ptr(),
standard_output.as_mut_ptr(),
standard_error.as_mut_ptr(),
&mut error,
);
let child_pid = from_glib(child_pid.assume_init());
let standard_input = standard_input.assume_init();
let standard_output = standard_output.assume_init();
let standard_error = standard_error.assume_init();
if error.is_null() {
#[cfg(not(windows))]
{
Ok((
child_pid,
FromRawFd::from_raw_fd(standard_input),
FromRawFd::from_raw_fd(standard_output),
FromRawFd::from_raw_fd(standard_error),
))
}
// #[cfg(windows)]
// {
// use std::os::windows::io::{FromRawHandle, RawHandle};
// Ok((
// child_pid,
// File::from_raw_handle(standard_input as usize as RawHandle),
// File::from_raw_handle(standard_output as usize as RawHandle),
// File::from_raw_handle(standard_error as usize as RawHandle),
// ))
// }
} else {
Err(from_glib_full(error))
}
}
}
// rustdoc-stripper-ignore-next
/// Obtain the character set for the current locale.
///
/// This returns whether the locale's encoding is UTF-8, and the current
/// charset if available.
#[doc(alias = "g_get_charset")]
#[doc(alias = "get_charset")]
pub fn charset() -> (bool, Option<&'static GStr>) {
unsafe {
let mut out_charset = ptr::null();
let is_utf8 = from_glib(ffi::g_get_charset(&mut out_charset));
let charset = from_glib_none(out_charset);
(is_utf8, charset)
}
}
#[doc(alias = "g_compute_checksum_for_string")]
pub fn compute_checksum_for_string(
checksum_type: ChecksumType,
str: impl IntoGStr,
) -> Option<crate::GString> {
str.run_with_gstr(|str| unsafe {
from_glib_full(ffi::g_compute_checksum_for_string(
checksum_type.into_glib(),
str.as_ptr(),
str.len() as _,
))
})
}
/// Similar to the UNIX pipe() call, but on modern systems like Linux
/// uses the pipe2() system call, which atomically creates a pipe with
/// the configured flags.
///
/// As of GLib 2.78, the supported flags are `O_CLOEXEC`/`FD_CLOEXEC` (see below)
/// and `O_NONBLOCK`. Prior to GLib 2.78, only `FD_CLOEXEC` was supported — if
/// you wanted to configure `O_NONBLOCK` then that had to be done separately with
/// `fcntl()`.
///
/// Since GLib 2.80, the constants `G_UNIX_PIPE_END_READ` and
/// `G_UNIX_PIPE_END_WRITE` can be used as mnemonic indexes in @fds.
///
/// It is a programmer error to call this function with unsupported flags, and a
/// critical warning will be raised.
///
/// As of GLib 2.78, it is preferred to pass `O_CLOEXEC` in, rather than
/// `FD_CLOEXEC`, as that matches the underlying `pipe()` API more closely. Prior
/// to 2.78, only `FD_CLOEXEC` was supported. Support for `FD_CLOEXEC` may be
/// deprecated and removed in future.
/// ## `fds`
/// Array of two integers
/// ## `flags`
/// Bitfield of file descriptor flags, as for fcntl()
///
/// # Returns
///
/// [`true`] on success, [`false`] if not (and errno will be set).
#[cfg(unix)]
#[doc(alias = "g_unix_open_pipe")]
pub fn unix_open_pipe(flags: i32) -> Result<(RawFd, RawFd), Error> {
unsafe {
let mut fds = [0, 2];
let mut error = ptr::null_mut();
let _ = ffi::g_unix_open_pipe(&mut fds, flags, &mut error);
if error.is_null() {
Ok((
FromRawFd::from_raw_fd(fds[0]),
FromRawFd::from_raw_fd(fds[1]),
))
} else {
Err(from_glib_full(error))
}
}
}
/// Opens a file for writing in the preferred directory for temporary
/// files (as returned by g_get_tmp_dir()).
///
/// @tmpl should be a string in the GLib file name encoding containing
/// a sequence of six 'X' characters, as the parameter to g_mkstemp().
/// However, unlike these functions, the template should only be a
/// basename, no directory components are allowed. If template is
/// [`None`], a default template is used.
///
/// Note that in contrast to g_mkstemp() (and mkstemp()) @tmpl is not
/// modified, and might thus be a read-only literal string.
///
/// Upon success, and if @name_used is non-[`None`], the actual name used
/// is returned in @name_used. This string should be freed with g_free()
/// when not needed any longer. The returned name is in the GLib file
/// name encoding.
/// ## `tmpl`
/// Template for file name, as in
/// g_mkstemp(), basename only, or [`None`] for a default template
///
/// # Returns
///
/// A file handle (as from open()) to the file opened for
/// reading and writing. The file is opened in binary mode on platforms
/// where there is a difference. The file handle should be closed with
/// close(). In case of errors, -1 is returned and @error will be set.
///
/// ## `name_used`
/// location to store actual name used,
/// or [`None`]
#[cfg(unix)]
#[doc(alias = "g_file_open_tmp")]
pub fn file_open_tmp(
tmpl: Option<impl AsRef<std::path::Path>>,
) -> Result<(RawFd, std::path::PathBuf), crate::Error> {
unsafe {
let mut name_used = ptr::null_mut();
let mut error = ptr::null_mut();
let ret = ffi::g_file_open_tmp(
tmpl.as_ref().map(|p| p.as_ref()).to_glib_none().0,
&mut name_used,
&mut error,
);
if error.is_null() {
Ok((ret.into_raw_fd(), from_glib_full(name_used)))
} else {
Err(from_glib_full(error))
}
}
}
// rustdoc-stripper-ignore-next
/// Spawn a new infallible `Future` on the thread-default main context.
///
/// This can be called from any thread and will execute the future from the thread
/// where main context is running, e.g. via a `MainLoop`.
pub fn spawn_future<R: Send + 'static, F: std::future::Future<Output = R> + Send + 'static>(
f: F,
) -> crate::JoinHandle<R> {
let ctx = crate::MainContext::ref_thread_default();
ctx.spawn(f)
}
// rustdoc-stripper-ignore-next
/// Spawn a new infallible `Future` on the thread-default main context.
///
/// The given `Future` does not have to be `Send`.
///
/// This can be called only from the thread where the main context is running, e.g.
/// from any other `Future` that is executed on this main context, or after calling
/// `with_thread_default` or `acquire` on the main context.
pub fn spawn_future_local<R: 'static, F: std::future::Future<Output = R> + 'static>(
f: F,
) -> crate::JoinHandle<R> {
let ctx = crate::MainContext::ref_thread_default();
ctx.spawn_local(f)
}