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Pathconf names #4508

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Merged
merged 2 commits into from
Feb 21, 2023
Merged

Pathconf names #4508

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468f1aa
Implmentation for os.pathconf_names
mmednick Feb 16, 2023
955347e
posix.pathconf_names only for linux
youknowone Feb 21, 2023
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7 changes: 7 additions & 0 deletions extra_tests/snippets/stdlib_os.py
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Original file line number Diff line number Diff line change
Expand Up @@ -507,3 +507,10 @@ def __exit__(self, exc_type, exc_val, exc_tb):

for arg in [None, 1, 1.0, TabError]:
assert_raises(TypeError, os.system, arg)

# Testing for os.pathconf_names
if sys.platform.startswith('linux'):
assert len(os.pathconf_names) > 0
assert 'PC_NAME_MAX' in os.pathconf_names
for option,index in os.pathconf_names.items():
assert os.pathconf('/', index) == os.pathconf('/', option)
24 changes: 22 additions & 2 deletions vm/src/stdlib/posix.rs
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Expand Up @@ -51,7 +51,7 @@ pub mod module {
fs, io,
os::unix::{ffi as ffi_ext, io::RawFd},
};
use strum_macros::EnumString;
use strum_macros::{EnumString, EnumVariantNames};

#[pyattr]
use libc::{PRIO_PGRP, PRIO_PROCESS, PRIO_USER};
Expand Down Expand Up @@ -1681,7 +1681,7 @@ pub mod module {

// Copy from [nix::unistd::PathconfVar](https://docs.rs/nix/0.21.0/nix/unistd/enum.PathconfVar.html)
// Change enum name to fit python doc
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq, EnumString)]
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq, EnumString, EnumVariantNames)]
#[repr(i32)]
#[allow(non_camel_case_types)]
pub enum PathconfVar {
Expand Down Expand Up @@ -1881,6 +1881,26 @@ pub mod module {
pathconf(PathOrFd::Fd(fd), name, vm)
}

// TODO: this is expected to be run on macOS as a unix, but somehow not.
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I put linux cfg until it is fixed for macos

#[cfg(target_os = "linux")]
#[pyattr]
fn pathconf_names(vm: &VirtualMachine) -> PyDictRef {
use std::str::FromStr;
use strum::VariantNames;
let pathname = vm.ctx.new_dict();
for variant in PathconfVar::VARIANTS {
// get the name of variant as a string to use as the dictionary key
let key = vm.ctx.new_str(variant.to_string());
// get the enum from the string and convert it to an integer for the dictionary value
let value: PyObjectRef = vm
.ctx
.new_int(PathconfVar::from_str(variant).unwrap() as u8)
.into();
pathname.set_item(&*key, value, vm).unwrap();
}
pathname
}

#[cfg(any(target_os = "linux", target_os = "macos"))]
#[derive(FromArgs)]
struct SendFileArgs {
Expand Down