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annotate rust/chg/src/runcommand.rs @ 52664:f5091286b10c

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packaging: modernize (compat PEP 517) with less distutils and setup.py calls - setup.py: less distutils imports and setuptools required distutils is deprecated and one should import commands from setuptools to support modern workflows depending on PEP 517 and 518. Moreover, for Python >=3.12, distutils comes from setuptools. It corresponds to old and unmaintain code that do not support PEP 517. The PEP 517 frontends (pip, build, pipx, PDM, UV, etc.) are responsible for creating a venv just for the build. The build dependencies (currently only setuptools) are specified in the pyproject.toml file. Therefore, there is no reason to support building without setuptools. Calling directly setup.py is deprecated and we have to use a PEP 517 frontend. For this commit we use pip with venv. - run-tests.py: install with pip instead of direct call of setup.py Mercurial is then built in an isolated environment. - Makefile: use venv+pip instead of setup.py
author paugier <pierre.augier@univ-grenoble-alpes.fr>
date Wed, 08 Jan 2025 05:07:00 +0100
parents 426294d06ddc
children
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1 // Copyright 2018 Yuya Nishihara <yuya@tcha.org>
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2 //
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3 // This software may be used and distributed according to the terms of the
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4 // GNU General Public License version 2 or any later version.
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5
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6 //! Functions to run Mercurial command in cHg-aware command server.
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7
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8 use bytes::Bytes;
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9 use std::io;
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10 use std::os::unix::io::AsRawFd;
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11 use tokio_hglib::codec::ChannelMessage;
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12 use tokio_hglib::{Connection, Protocol};
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13
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14 use crate::attachio;
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15 use crate::message::{self, CommandType};
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16 use crate::uihandler::SystemHandler;
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17
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18 /// Runs the given Mercurial command in cHg-aware command server, and
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19 /// fetches the result code.
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20 ///
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21 /// This is a subset of tokio-hglib's `run_command()` with the additional
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22 /// SystemRequest support.
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23 pub async fn run_command(
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24 proto: &mut Protocol<impl Connection + AsRawFd>,
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25 handler: &mut impl SystemHandler,
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26 packed_args: impl Into<Bytes>,
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27 ) -> io::Result<i32> {
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28 proto
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29 .send_command_with_args("runcommand", packed_args)
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30 .await?;
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31 loop {
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32 match proto.fetch_response().await? {
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33 ChannelMessage::Data(b'r', data) => {
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34 return message::parse_result_code(data);
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35 }
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36 ChannelMessage::Data(..) => {
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37 // just ignores data sent to optional channel
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38 }
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39 ChannelMessage::InputRequest(..)
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40 | ChannelMessage::LineRequest(..) => {
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41 return Err(io::Error::new(
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42 io::ErrorKind::InvalidData,
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43 "unsupported request",
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44 ));
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45 }
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46 ChannelMessage::SystemRequest(data) => {
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47 let (cmd_type, cmd_spec) = message::parse_command_spec(data)?;
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48 match cmd_type {
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49 CommandType::Pager => {
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50 // server spins new command loop while pager request is
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51 // in progress, which can be terminated by "" command.
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52 let pin = handler.spawn_pager(&cmd_spec).await?;
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53 attachio::attach_io(proto, &io::stdin(), &pin, &pin)
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54 .await?;
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55 proto.send_command("").await?; // terminator
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56 }
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57 CommandType::System => {
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58 let code = handler.run_system(&cmd_spec).await?;
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59 let data = message::pack_result_code(code);
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60 proto.send_data(data).await?;
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61 }
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62 }
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63 }
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64 }
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65 }
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66 }