47 lines
1.2 KiB
Rust
47 lines
1.2 KiB
Rust
use crate::prelude::*;
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use nu_errors::ShellError;
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use nu_data::value::format_leaf;
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use nu_engine::WholeStreamCommand;
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use nu_protocol::{Signature, SyntaxShape, UntaggedValue, Value};
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pub struct BuildString;
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impl WholeStreamCommand for BuildString {
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fn name(&self) -> &str {
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"build-string"
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}
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fn signature(&self) -> Signature {
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Signature::build("build-string")
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.rest(SyntaxShape::Any, "all values to form into the string")
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}
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fn usage(&self) -> &str {
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"Builds a string from the arguments."
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}
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fn run(&self, args: CommandArgs) -> Result<OutputStream, ShellError> {
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let tag = args.call_info.name_tag.clone();
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let rest: Vec<Value> = args.rest(0)?;
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let mut output_string = String::new();
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for r in rest {
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output_string.push_str(&format_leaf(&r).plain_string(100_000))
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}
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Ok(OutputStream::one(
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UntaggedValue::string(output_string).into_value(tag),
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))
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}
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fn examples(&self) -> Vec<Example> {
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vec![Example {
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description: "Builds a string from a string and a number, without spaces between them",
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example: "build-string 'foo' 3",
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result: None,
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}]
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}
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}
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