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//! ref: composer/vendor/symfony/process/Pipes/UnixPipes.php
use indexmap::IndexMap;
use shirabe_php_shim::{self as php, Descriptor, PhpMixed, PhpResource};
use crate::symfony::process::pipes::abstract_pipes::AbstractPipes;
use crate::symfony::process::pipes::pipes_interface::{CHUNK_SIZE, PipesInterface};
use crate::symfony::process::process::Process;
/// UnixPipes implementation uses unix pipes as handles.
#[derive(Debug)]
pub struct UnixPipes {
inner: AbstractPipes,
tty_mode: Option<bool>,
pty_mode: bool,
have_read_support: bool,
}
impl UnixPipes {
pub fn new(
tty_mode: Option<bool>,
pty_mode: bool,
input: PhpMixed,
have_read_support: bool,
) -> Self {
Self {
inner: AbstractPipes::new(input),
tty_mode,
pty_mode,
have_read_support,
}
}
}
fn descriptor(items: &[&str]) -> Descriptor {
match items {
["pipe", mode] => Descriptor::Pipe(mode.to_string()),
["file", path, mode] => Descriptor::File(path.to_string(), mode.to_string()),
["pty"] => Descriptor::Pty,
_ => panic!("unsupported descriptor spec: {:?}", items),
}
}
impl PipesInterface for UnixPipes {
fn get_descriptors(&mut self) -> Vec<Descriptor> {
if !self.have_read_support {
let nullstream = php::fopen("/dev/null", "c").expect("fopen('/dev/null') failed");
return vec![
descriptor(&["pipe", "r"]),
Descriptor::Resource(nullstream.clone()),
Descriptor::Resource(nullstream),
];
}
if self.tty_mode == Some(true) {
return vec![
descriptor(&["file", "/dev/tty", "r"]),
descriptor(&["file", "/dev/tty", "w"]),
descriptor(&["file", "/dev/tty", "w"]),
];
}
if self.pty_mode && Process::is_pty_supported() {
return vec![
descriptor(&["pty"]),
descriptor(&["pty"]),
descriptor(&["pty"]),
];
}
vec![
descriptor(&["pipe", "r"]),
descriptor(&["pipe", "w"]),
descriptor(&["pipe", "w"]),
]
}
fn get_files(&self) -> IndexMap<i64, String> {
IndexMap::new()
}
fn read_and_write(&mut self, blocking: bool, close: bool) -> IndexMap<i64, String> {
self.inner.unblock();
let w = self.inner.write();
let mut read: IndexMap<i64, String> = IndexMap::new();
// $r = $this->pipes; unset($r[0]);
let r: Vec<(i64, PhpResource)> = self
.inner
.pipes
.iter()
.filter(|(fd, _)| **fd != 0)
.map(|(fd, pipe)| (*fd, pipe.clone()))
.collect();
// TODO(plugin): set_error_handler/restore_error_handler around stream_select is not modeled.
let mut r_sel: Vec<PhpResource> = r.iter().map(|(_, p)| p.clone()).collect();
let mut w_sel: Vec<PhpResource> = w.clone().unwrap_or_default();
let mut e_sel: Vec<PhpResource> = Vec::new();
// let's have a look if something changed in streams
if (!r_sel.is_empty() || w.is_some())
&& php::stream_select(
&mut r_sel,
&mut w_sel,
&mut e_sel,
0,
Some(if blocking {
(Process::TIMEOUT_PRECISION * 1e6) as i64
} else {
0
}),
)
.is_none()
{
// if a system call has been interrupted, forget about it, let's try again
// otherwise, an error occurred, let's reset pipes
if !self.inner.has_system_call_been_interrupted() {
self.inner.pipes = IndexMap::new();
}
return read;
}
for (fd, pipe) in &r {
let mut data = String::new();
loop {
let chunk = php::fread(pipe, CHUNK_SIZE).unwrap_or_default();
let len = chunk.len() as i64;
data.push_str(&chunk);
if !(len > 0 && (close || len >= CHUNK_SIZE)) {
break;
}
}
if !data.is_empty() {
read.insert(*fd, data);
}
if close && php::feof(pipe) {
php::fclose(pipe);
self.inner.pipes.shift_remove(fd);
}
}
read
}
fn have_read_support(&self) -> bool {
self.have_read_support
}
fn are_open(&self) -> bool {
!self.inner.pipes.is_empty()
}
fn close(&mut self) {
self.inner.close();
}
fn pipes(&self) -> &IndexMap<i64, PhpResource> {
&self.inner.pipes
}
fn pipes_mut(&mut self) -> &mut IndexMap<i64, PhpResource> {
&mut self.inner.pipes
}
}
|
