nu_command/env/config/
config_reset.rs

1use chrono::Local;
2use nu_config::ConfigFileKind;
3use nu_engine::command_prelude::*;
4use std::io::Write;
5
6#[derive(Clone)]
7pub struct ConfigReset;
8
9impl Command for ConfigReset {
10    fn name(&self) -> &str {
11        "config reset"
12    }
13
14    fn signature(&self) -> Signature {
15        Signature::build(self.name())
16            .switch("nu", "Reset only nu config, config.nu.", Some('n'))
17            .switch("env", "Reset only env config, env.nu.", Some('e'))
18            .switch("without-backup", "Do not make a backup.", Some('w'))
19            .input_output_types(vec![(Type::Nothing, Type::Nothing)])
20            .allow_variants_without_examples(true)
21            .category(Category::Env)
22    }
23
24    fn description(&self) -> &str {
25        "Reset nushell environment configurations to default, and saves old config files in the config location as oldconfig.nu and oldenv.nu."
26    }
27
28    fn examples(&self) -> Vec<Example<'_>> {
29        vec![Example {
30            description: "Reset nushell configuration files.",
31            example: "config reset",
32            result: None,
33        }]
34    }
35
36    fn run(
37        &self,
38        engine_state: &EngineState,
39        stack: &mut Stack,
40        call: &Call,
41        _input: PipelineData,
42    ) -> Result<PipelineData, ShellError> {
43        let only_nu = call.has_flag(engine_state, stack, "nu")?;
44        let only_env = call.has_flag(engine_state, stack, "env")?;
45        let no_backup = call.has_flag(engine_state, stack, "without-backup")?;
46        let span = call.head;
47        let config_path = &engine_state.config_dirs.config_home;
48        if !only_env {
49            let kind = ConfigFileKind::Config;
50            let mut nu_config = config_path.clone();
51            nu_config.push(kind.path());
52            let config_file = kind.scaffold();
53            if !no_backup {
54                let mut backup_path = config_path.clone();
55                backup_path.push(format!(
56                    "oldconfig-{}.nu",
57                    Local::now().format("%F-%H-%M-%S"),
58                ));
59                if let Err(err) = std::fs::rename(nu_config.clone(), &backup_path) {
60                    return Err(ShellError::Io(IoError::new_with_additional_context(
61                        err.not_found_as(NotFound::Directory),
62                        span,
63                        backup_path,
64                        "config.nu could not be backed up",
65                    )));
66                }
67            }
68            if let Ok(mut file) = std::fs::File::create(&nu_config)
69                && let Err(err) = writeln!(&mut file, "{config_file}")
70            {
71                return Err(ShellError::Io(IoError::new_with_additional_context(
72                    err.not_found_as(NotFound::File),
73                    span,
74                    nu_config,
75                    "config.nu could not be written to",
76                )));
77            }
78        }
79        if !only_nu {
80            let kind = ConfigFileKind::Env;
81            let mut env_config = config_path.clone();
82            env_config.push(kind.path());
83            let config_file = kind.scaffold();
84            if !no_backup {
85                let mut backup_path = config_path.clone();
86                backup_path.push(format!("oldenv-{}.nu", Local::now().format("%F-%H-%M-%S"),));
87                if let Err(err) = std::fs::rename(env_config.clone(), &backup_path) {
88                    return Err(ShellError::Io(IoError::new_with_additional_context(
89                        err.not_found_as(NotFound::Directory),
90                        span,
91                        backup_path,
92                        "env.nu could not be backed up",
93                    )));
94                }
95            }
96            if let Ok(mut file) = std::fs::File::create(&env_config)
97                && let Err(err) = writeln!(&mut file, "{config_file}")
98            {
99                return Err(ShellError::Io(IoError::new_with_additional_context(
100                    err.not_found_as(NotFound::File),
101                    span,
102                    env_config,
103                    "env.nu could not be written to",
104                )));
105            }
106        }
107        Ok(PipelineData::empty())
108    }
109}
nu_command/env/config/config_reset.rs

nu_command/env/config/
config_reset.rs
