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Insert Column[index] if no header info is found.

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This commit is contained in:
Sam Hedin 2020-03-28 17:02:36 +01:00
parent ac1ef302ad
commit ee23fce9cd
1 changed files with 8 additions and 5 deletions

13
crates/nu-cli/src/commands/headers.rs
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@ -32,7 +32,7 @@ impl WholeStreamCommand for Headers {
pub fn headers(
HeadersArgs {}: HeadersArgs,
RunnableContext { input, name, .. }: RunnableContext,
RunnableContext { input, .. }: RunnableContext,
) -> Result<OutputStream, ShellError> {
let stream = async_stream! {
let rows: Vec<Value> = input.values.collect().await;
@ -40,10 +40,15 @@ pub fn headers(
//the headers are the first row in the table
let headers: Vec<String> = match &rows[0].value {
UntaggedValue::Row(d) => {
Ok(d.entries.iter().map(|(_, v)| {
Ok(d.entries.iter().map(|(k, v)| {
match v.as_string() {
Ok(s) => s,
Err(_) => String::from("empty-header") //If a cell that should contain a header name is empty, we need to fill it with something. TODO: Add indexing to differintate between headers
Err(_) => { //If a cell that should contain a header name is empty, we name the column Column[index]
match d.entries.get_full(k) {
Some((index, _, _)) => format!("Column{}", index),
None => "unknownColumn".to_string()
}
}
}
}).collect())
}
@ -54,14 +59,12 @@ pub fn headers(
for r in rows.iter().skip(1) {
match &r.value {
UntaggedValue::Row(d) => {
let mut i = 0;
let mut entries = IndexMap::new();
for (_, v) in d.entries.iter() {
entries.insert(headers[i].clone(), v.clone());
i += 1;
}
yield Ok(ReturnSuccess::Value(UntaggedValue::Row(Dictionary{entries}).into_value(r.tag.clone())))
}
_ => yield Err(ShellError::untagged_runtime_error("Couldn't iterate through rows, was the input a properly formatted table?"))