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input: process history list from pipe

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This commit is contained in:
Florent Vilmart 2025-03-23 09:58:18 -04:00
parent f5719513d1
commit 3ae38d374c
1 changed files with 35 additions and 36 deletions
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71
crates/nu-command/src/platform/input/input_.rs
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@ -24,7 +24,9 @@ impl Command for Input {
fn signature(&self) -> Signature {
Signature::build("input")
.input_output_types(vec![(Type::Nothing, Type::Any)])
.input_output_types(vec![
(Type::Nothing, Type::Any),
(Type::List(Box::new(Type::String)), Type::Any)])
.allow_variants_without_examples(true)
.optional("prompt", SyntaxShape::String, "Prompt to show the user.")
.named(
@ -46,12 +48,9 @@ impl Command for Input {
Some('d'),
)
.named(
"history",
SyntaxShape::OneOf(vec![
SyntaxShape::List(Box::new(SyntaxShape::String)),
SyntaxShape::Filepath,
]),
"path to a file to read/write history or a list of history entries",
"history-file",
SyntaxShape::Filepath,
"path to a file to read/write history",
None,
)
.named(
@ -69,7 +68,7 @@ impl Command for Input {
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: PipelineData,
input: PipelineData,
) -> Result<PipelineData, ShellError> {
// Those options are not supported by reedline, default to the legacy
// implementation
@ -84,12 +83,12 @@ impl Command for Input {
.any(|x| *x);
if use_legacy {
return self.legacy_input(engine_state, stack, call, _input);
return self.legacy_input(engine_state, stack, call, input);
}
let prompt_str: Option<String> = call.opt(engine_state, stack, 0)?;
let default_val: Option<String> = call.get_flag(engine_state, stack, "default")?;
let history_val: Option<Value> = call.get_flag(engine_state, stack, "history")?;
let history_file_val: Option<String> = call.get_flag(engine_state, stack, "history-file")?;
let max_history: usize = call
.get_flag::<i64>(engine_state, stack, "max-history")?
.map(|l| if l < 0 { 0 } else { l as usize })
@ -102,31 +101,31 @@ impl Command for Input {
_ => "".to_string(),
};
// Here we will render the default prompt to the right
let history = match history_val {
None => None,
Some(Value::String { val, .. }) => Some(
FileBackedHistory::with_file(max_history, val.into())
.expect("Error creating history file"),
),
Some(Value::List { vals, .. }) => {
let mut history =
FileBackedHistory::new(max_history).expect("Error creating history file");
vals.iter().for_each(|val| {
if let Value::String { val, .. } = val {
let _ = history.save(HistoryItem::from_command_line(val.clone()));
}
});
Some(history)
let history_entries = match input {
PipelineData::Value(Value::List { vals, .. }, ..) => {
Some(vals)
}
Some(h) => {
return Err(ShellError::UnsupportedInput {
msg: "Unsupported history type".to_string(),
input: "value originated from here".to_string(),
msg_span: call.head,
input_span: h.span(),
})
} // Value::List { vals, .. } => Some(Box::new((usize::MAX, val.into()))),
_ => None,
};
// If we either have history entries or history file, we create an history
let history = match (history_entries.is_some(), history_file_val.is_some()) {
(false, false) => None,
_ => {
let mut history = match history_file_val {
Some(file) => FileBackedHistory::with_file(max_history, file.into()),
None => FileBackedHistory::new(max_history)
}.expect("Error creating history file");
if let Some(vals) = history_entries {
vals.iter().for_each(|val| {
if let Value::String { val, .. } = val {
let _ = history.save(HistoryItem::from_command_line(val.clone()));
}
});
}
Some(history)
},
};
let prompt = ReedlinePrompt {
@ -187,12 +186,12 @@ impl Command for Input {
},
Example {
description: "Get input from the user with history, and assign to a variable",
example: "let user_input = (input --history [past,command,entries])",
example: "let user_input = ([past,command,entries] | input)",
result: None,
},
Example {
description: "Get input from the user with history backed by a file, and assign to a variable",
example: "let user_input = (input --history ./history.txt)",
example: "let user_input = (input --history-file ./history.txt)",
result: None,
},
]