nushell/crates/nu-command/src/strings/encode_decode/decode_base64.rs
Jérémy Audiger a5c604c283
Uniformize usage() and extra_usage() message ending for commands helper. (#8268)
# Description

Working on uniformizing the ending messages regarding methods usage()
and extra_usage(). This is related to the issue
https://github.com/nushell/nushell/issues/5066 after discussing it with
@jntrnr

# User-Facing Changes

None.

# Tests + Formatting

Don't forget to add tests that cover your changes.

Make sure you've run and fixed any issues with these commands:

- `cargo fmt --all -- --check` to check standard code formatting (`cargo
fmt --all` applies these changes)
- `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A
clippy::needless_collect` to check that you're using the standard code
style
- `cargo test --workspace` to check that all tests pass

# After Submitting

If your PR had any user-facing changes, update [the
documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.
2023-02-28 21:33:02 -08:00

88 lines
2.5 KiB
Rust

use super::base64::{operate, ActionType, CHARACTER_SET_DESC};
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
Category, Example, PipelineData, ShellError, Signature, Span, SyntaxShape, Type, Value,
};
#[derive(Clone)]
pub struct DecodeBase64;
impl Command for DecodeBase64 {
fn name(&self) -> &str {
"decode base64"
}
fn signature(&self) -> Signature {
Signature::build("decode base64")
.input_output_types(vec![
(Type::String, Type::String),
(Type::String, Type::Binary),
])
.vectorizes_over_list(true)
.named(
"character-set",
SyntaxShape::String,
CHARACTER_SET_DESC,
Some('c'),
)
.switch(
"binary",
"Output a binary value instead of decoding payload as UTF-8",
Some('b'),
)
.rest(
"rest",
SyntaxShape::CellPath,
"For a data structure input, decode data at the given cell paths",
)
.category(Category::Hash)
}
fn usage(&self) -> &str {
"Base64 decode a value."
}
fn extra_usage(&self) -> &str {
r#"Will attempt to decode binary payload as an UTF-8 string by default. Use the `--binary(-b)` argument to force binary output."#
}
fn examples(&self) -> Vec<Example> {
vec![
Example {
description: "Base64 decode a value and output as UTF-8 string",
example: "'U29tZSBEYXRh' | decode base64",
result: Some(Value::test_string("Some Data")),
},
Example {
description: "Base64 decode a value and output as binary",
example: "'U29tZSBEYXRh' | decode base64 --binary",
result: Some(Value::binary(
[0x53, 0x6f, 0x6d, 0x65, 0x20, 0x44, 0x61, 0x74, 0x61],
Span::test_data(),
)),
},
]
}
fn run(
&self,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: PipelineData,
) -> Result<PipelineData, ShellError> {
operate(ActionType::Decode, engine_state, stack, call, input)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_examples() {
crate::test_examples(DecodeBase64)
}
}