##// END OF EJS Templates
rhg: use `Command::exec` instead of `Command::status`...
rhg: use `Command::exec` instead of `Command::status` `rhg` is supposed to be a transparent executable, using a subprocess defeats that purpose. See inline comments for more details. This also introduces the `which` crate to check if the fallback executable actually exists to help debugging (plain `execve` doesn't give much information). The error code 253 is used to signify that the fallback is not found, but may mean in the future that it is otherwise invalid if we start being more specific. Differential Revision: https://phab.mercurial-scm.org/D12578

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r49991:38e5bb14 default
r50043:006688e3 stable
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item.rs
285 lines | 7.8 KiB | application/rls-services+xml | RustLexer
use cpython::exc;
use cpython::ObjectProtocol;
use cpython::PyBytes;
use cpython::PyErr;
use cpython::PyNone;
use cpython::PyObject;
use cpython::PyResult;
use cpython::Python;
use cpython::PythonObject;
use hg::dirstate::DirstateEntry;
use hg::dirstate::EntryState;
use hg::dirstate::TruncatedTimestamp;
use std::cell::Cell;
use std::convert::TryFrom;
py_class!(pub class DirstateItem |py| {
data entry: Cell<DirstateEntry>;
def __new__(
_cls,
wc_tracked: bool = false,
p1_tracked: bool = false,
p2_info: bool = false,
has_meaningful_data: bool = true,
has_meaningful_mtime: bool = true,
parentfiledata: Option<(u32, u32, Option<(u32, u32, bool)>)> = None,
fallback_exec: Option<bool> = None,
fallback_symlink: Option<bool> = None,
) -> PyResult<DirstateItem> {
let mut mode_size_opt = None;
let mut mtime_opt = None;
if let Some((mode, size, mtime)) = parentfiledata {
if has_meaningful_data {
mode_size_opt = Some((mode, size))
}
if has_meaningful_mtime {
if let Some(m) = mtime {
mtime_opt = Some(timestamp(py, m)?);
}
}
}
let entry = DirstateEntry::from_v2_data(
wc_tracked,
p1_tracked,
p2_info,
mode_size_opt,
mtime_opt,
fallback_exec,
fallback_symlink,
);
DirstateItem::create_instance(py, Cell::new(entry))
}
@property
def state(&self) -> PyResult<PyBytes> {
let state_byte: u8 = self.entry(py).get().state().into();
Ok(PyBytes::new(py, &[state_byte]))
}
@property
def mode(&self) -> PyResult<i32> {
Ok(self.entry(py).get().mode())
}
@property
def size(&self) -> PyResult<i32> {
Ok(self.entry(py).get().size())
}
@property
def mtime(&self) -> PyResult<i32> {
Ok(self.entry(py).get().mtime())
}
@property
def has_fallback_exec(&self) -> PyResult<bool> {
match self.entry(py).get().get_fallback_exec() {
Some(_) => Ok(true),
None => Ok(false),
}
}
@property
def fallback_exec(&self) -> PyResult<Option<bool>> {
match self.entry(py).get().get_fallback_exec() {
Some(exec) => Ok(Some(exec)),
None => Ok(None),
}
}
@fallback_exec.setter
def set_fallback_exec(&self, value: Option<PyObject>) -> PyResult<()> {
match value {
None => {self.entry(py).get().set_fallback_exec(None);},
Some(value) => {
if value.is_none(py) {
self.entry(py).get().set_fallback_exec(None);
} else {
self.entry(py).get().set_fallback_exec(
Some(value.is_true(py)?)
);
}},
}
Ok(())
}
@property
def has_fallback_symlink(&self) -> PyResult<bool> {
match self.entry(py).get().get_fallback_symlink() {
Some(_) => Ok(true),
None => Ok(false),
}
}
@property
def fallback_symlink(&self) -> PyResult<Option<bool>> {
match self.entry(py).get().get_fallback_symlink() {
Some(symlink) => Ok(Some(symlink)),
None => Ok(None),
}
}
@fallback_symlink.setter
def set_fallback_symlink(&self, value: Option<PyObject>) -> PyResult<()> {
match value {
None => {self.entry(py).get().set_fallback_symlink(None);},
Some(value) => {
if value.is_none(py) {
self.entry(py).get().set_fallback_symlink(None);
} else {
self.entry(py).get().set_fallback_symlink(
Some(value.is_true(py)?)
);
}},
}
Ok(())
}
@property
def tracked(&self) -> PyResult<bool> {
Ok(self.entry(py).get().tracked())
}
@property
def p1_tracked(&self) -> PyResult<bool> {
Ok(self.entry(py).get().p1_tracked())
}
@property
def added(&self) -> PyResult<bool> {
Ok(self.entry(py).get().added())
}
@property
def p2_info(&self) -> PyResult<bool> {
Ok(self.entry(py).get().p2_info())
}
@property
def removed(&self) -> PyResult<bool> {
Ok(self.entry(py).get().removed())
}
@property
def maybe_clean(&self) -> PyResult<bool> {
Ok(self.entry(py).get().maybe_clean())
}
@property
def any_tracked(&self) -> PyResult<bool> {
Ok(self.entry(py).get().any_tracked())
}
def v1_state(&self) -> PyResult<PyBytes> {
let (state, _mode, _size, _mtime) = self.entry(py).get().v1_data();
let state_byte: u8 = state.into();
Ok(PyBytes::new(py, &[state_byte]))
}
def v1_mode(&self) -> PyResult<i32> {
let (_state, mode, _size, _mtime) = self.entry(py).get().v1_data();
Ok(mode)
}
def v1_size(&self) -> PyResult<i32> {
let (_state, _mode, size, _mtime) = self.entry(py).get().v1_data();
Ok(size)
}
def v1_mtime(&self) -> PyResult<i32> {
let (_state, _mode, _size, mtime) = self.entry(py).get().v1_data();
Ok(mtime)
}
def mtime_likely_equal_to(&self, other: (u32, u32, bool))
-> PyResult<bool> {
if let Some(mtime) = self.entry(py).get().truncated_mtime() {
Ok(mtime.likely_equal(timestamp(py, other)?))
} else {
Ok(false)
}
}
@classmethod
def from_v1_data(
_cls,
state: PyBytes,
mode: i32,
size: i32,
mtime: i32,
) -> PyResult<Self> {
let state = <[u8; 1]>::try_from(state.data(py))
.ok()
.and_then(|state| EntryState::try_from(state[0]).ok())
.ok_or_else(|| PyErr::new::<exc::ValueError, _>(py, "invalid state"))?;
let entry = DirstateEntry::from_v1_data(state, mode, size, mtime);
DirstateItem::create_instance(py, Cell::new(entry))
}
def drop_merge_data(&self) -> PyResult<PyNone> {
self.update(py, |entry| entry.drop_merge_data());
Ok(PyNone)
}
def set_clean(
&self,
mode: u32,
size: u32,
mtime: (u32, u32, bool),
) -> PyResult<PyNone> {
let mtime = timestamp(py, mtime)?;
self.update(py, |entry| entry.set_clean(mode, size, mtime));
Ok(PyNone)
}
def set_possibly_dirty(&self) -> PyResult<PyNone> {
self.update(py, |entry| entry.set_possibly_dirty());
Ok(PyNone)
}
def set_tracked(&self) -> PyResult<PyNone> {
self.update(py, |entry| entry.set_tracked());
Ok(PyNone)
}
def set_untracked(&self) -> PyResult<PyNone> {
self.update(py, |entry| entry.set_untracked());
Ok(PyNone)
}
});
impl DirstateItem {
pub fn new_as_pyobject(
py: Python<'_>,
entry: DirstateEntry,
) -> PyResult<PyObject> {
Ok(DirstateItem::create_instance(py, Cell::new(entry))?.into_object())
}
pub fn get_entry(&self, py: Python<'_>) -> DirstateEntry {
self.entry(py).get()
}
// TODO: Use https://doc.rust-lang.org/std/cell/struct.Cell.html#method.update instead when it’s stable
pub fn update(&self, py: Python<'_>, f: impl FnOnce(&mut DirstateEntry)) {
let mut entry = self.entry(py).get();
f(&mut entry);
self.entry(py).set(entry)
}
}
pub(crate) fn timestamp(
py: Python<'_>,
(s, ns, second_ambiguous): (u32, u32, bool),
) -> PyResult<TruncatedTimestamp> {
TruncatedTimestamp::from_already_truncated(s, ns, second_ambiguous)
.map_err(|_| {
PyErr::new::<exc::ValueError, _>(
py,
"expected mtime truncated to 31 bits",
)
})
}