nushell/crates/nu-cli/src/commands/to_md.rs

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use crate::commands::WholeStreamCommand;
use crate::data::value::format_leaf;
use crate::prelude::*;
use futures::StreamExt;
use nu_errors::ShellError;
use nu_protocol::{ReturnSuccess, Signature, UntaggedValue, Value};
pub struct ToMarkdown;
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#[async_trait]
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impl WholeStreamCommand for ToMarkdown {
fn name(&self) -> &str {
"to md"
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}
fn signature(&self) -> Signature {
Signature::build("to md")
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}
fn usage(&self) -> &str {
"Convert table into simple Markdown"
}
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async fn run(
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&self,
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
to_html(args, registry).await
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}
}
async fn to_html(
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
let registry = registry.clone();
let args = args.evaluate_once(&registry).await?;
let name_tag = args.name_tag();
let input: Vec<Value> = args.input.collect().await;
let headers = nu_protocol::merge_descriptors(&input);
let mut output_string = String::new();
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if !headers.is_empty() && (headers.len() > 1 || headers[0] != "") {
output_string.push_str("|");
for header in &headers {
output_string.push_str(&htmlescape::encode_minimal(&header));
output_string.push_str("|");
}
output_string.push_str("\n|");
for _ in &headers {
output_string.push_str("-");
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output_string.push_str("|");
}
output_string.push_str("\n");
}
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for row in input {
match row.value {
UntaggedValue::Row(row) => {
output_string.push_str("|");
for header in &headers {
let data = row.get_data(header);
output_string.push_str(&format_leaf(data.borrow()).plain_string(100_000));
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output_string.push_str("|");
}
output_string.push_str("\n");
}
p => {
output_string.push_str(
&(htmlescape::encode_minimal(&format_leaf(&p).plain_string(100_000))),
);
output_string.push_str("\n");
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}
}
}
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Ok(OutputStream::one(ReturnSuccess::value(
UntaggedValue::string(output_string).into_value(name_tag),
)))
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}
#[cfg(test)]
mod tests {
use super::ToMarkdown;
#[test]
fn examples_work_as_expected() {
use crate::examples::test as test_examples;
test_examples(ToMarkdown {})
}
}