hypershell-tokio-components 0.1.0

Modular DSL for shellscripting in Rust
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56

use core::marker::PhantomData;
use std::ffi::OsStr;

use cgp::prelude::*;
use hypershell_components::components::CanExtractCommandArg;
use hypershell_components::dsl::{FieldArgs, WithArgs};
use tokio::process::Command;

use crate::components::{CommandUpdater, CommandUpdaterComponent};

pub struct ExtractArgs;

#[cgp_provider]
impl<Context, Arg, Args> CommandUpdater<Context, WithArgs<Cons<Arg, Args>>> for ExtractArgs
where
    Context: CanExtractCommandArg<Arg>,
    Context::CommandArg: AsRef<OsStr> + Send,
    Self: CommandUpdater<Context, WithArgs<Args>>,
{
    fn update_command(
        context: &Context,
        _phantom: PhantomData<WithArgs<Cons<Arg, Args>>>,
        command: &mut Command,
    ) {
        let arg = context.extract_command_arg(PhantomData);
        command.arg(arg);

        Self::update_command(context, PhantomData::<WithArgs<Args>>, command);
    }
}

#[cgp_provider]
impl<Context> CommandUpdater<Context, WithArgs<Nil>> for ExtractArgs {
    fn update_command(
        _context: &Context,
        _phantom: PhantomData<WithArgs<Nil>>,
        _command: &mut Command,
    ) {
    }
}

#[cgp_new_provider]
impl<Context, Tag> CommandUpdater<Context, FieldArgs<Tag>> for ExtractFieldArgs
where
    Context: HasField<Tag>,
    for<'a> &'a Context::Value: IntoIterator<Item: AsRef<OsStr>>,
{
    fn update_command(
        context: &Context,
        _phantom: PhantomData<FieldArgs<Tag>>,
        command: &mut Command,
    ) {
        let args = context.get_field(PhantomData);
        command.args(args);
    }
}