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Auto-detect string / binary in save command (#1459)

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* Auto-detect string / binary in save command

* Linter
This commit is contained in:
Jean Cavallo 2020-03-07 19:33:29 +01:00 committed by GitHub
parent 8925ca5da3
commit ebf139f5e5
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 44 additions and 2 deletions
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46
crates/nu-cli/src/commands/save.rs
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@ -7,6 +7,22 @@ use std::path::{Path, PathBuf};
pub struct Save;
macro_rules! process_unknown {
($scope:tt, $input:ident, $name_tag:ident) => {{
if $input.len() > 0 {
match $input[0] {
Value {
value: UntaggedValue::Primitive(Primitive::Binary(_)),
..
} => process_binary!($scope, $input, $name_tag),
_ => process_string!($scope, $input, $name_tag),
}
} else {
process_string!($scope, $input, $name_tag)
}
}};
}
macro_rules! process_string {
($scope:tt, $input:ident, $name_tag:ident) => {{
let mut result_string = String::new();
@ -31,6 +47,32 @@ macro_rules! process_string {
}};
}
macro_rules! process_binary {
($scope:tt, $input:ident, $name_tag:ident) => {{
let mut result_binary: Vec<u8> = Vec::new();
for res in $input {
match res {
Value {
value: UntaggedValue::Primitive(Primitive::Binary(b)),
..
} => {
for u in b.into_iter() {
result_binary.push(u);
}
}
_ => {
break $scope Err(ShellError::labeled_error(
"Save could not successfully save",
"unexpected data during binary save",
$name_tag,
));
}
}
}
Ok(result_binary)
}};
}
macro_rules! process_string_return_success {
($scope:tt, $result_vec:ident, $name_tag:ident) => {{
let mut result_string = String::new();
@ -204,10 +246,10 @@ fn save(
process_string_return_success!('scope, result_vec, name_tag)
}
} else {
process_string!('scope, input, name_tag)
process_unknown!('scope, input, name_tag)
}
} else {
process_string!('scope, input, name_tag)
process_unknown!('scope, input, name_tag)
}
} else {
Ok(string_from(&input).into_bytes())