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;
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"
}
fn run(
&self,
args: CommandArgs,
registry: &CommandRegistry,
) -> Result<OutputStream, ShellError> {
to_html(args, registry)
}
}
fn to_html(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
let args = args.evaluate_once(registry)?;
let name_tag = args.name_tag();
//let name_span = name_tag.span;
let stream = async_stream! {
let input: Vec<Value> = args.input.collect().await;
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let headers = nu_protocol::merge_descriptors(&input);
let mut output_string = String::new();
if !headers.is_empty() && (headers.len() > 1 || headers[0] != "<value>") {
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("-");
output_string.push_str("|");
}
output_string.push_str("\n");
}
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));
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");
}
}
}
yield ReturnSuccess::value(UntaggedValue::string(output_string).into_value(name_tag));
};
Ok(stream.to_output_stream())
}