forked from extern/nushell
195 lines
6.3 KiB
Rust
195 lines
6.3 KiB
Rust
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use crate::prelude::*;
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use nu_errors::ShellError;
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use crate::commands::WholeStreamCommand;
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use nu_protocol::{
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ColumnPath, Primitive::Filesize, ReturnSuccess, Signature, SyntaxShape, UntaggedValue,
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UntaggedValue::Primitive, Value,
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};
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use nu_source::Tagged;
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use nu_value_ext::get_data_by_column_path;
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use num_format::{Locale, ToFormattedString};
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pub struct FileSize;
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#[derive(Deserialize)]
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pub struct Arguments {
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field: ColumnPath,
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format: Tagged<String>,
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}
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#[async_trait]
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impl WholeStreamCommand for FileSize {
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fn name(&self) -> &str {
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"format filesize"
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}
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fn signature(&self) -> Signature {
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Signature::build("format filesize")
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.required(
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"field",
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SyntaxShape::ColumnPath,
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"the name of the column to update",
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)
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.required(
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"format value",
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SyntaxShape::String,
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"the format into which convert the filesizes",
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)
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}
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fn usage(&self) -> &str {
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"Converts a column of filesizes to some specified format"
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}
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async fn run(
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&self,
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args: CommandArgs,
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registry: &CommandRegistry,
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) -> Result<OutputStream, ShellError> {
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filesize(args, registry).await
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}
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fn examples(&self) -> Vec<Example> {
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vec![
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Example {
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description: "Convert the size row to KB",
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example: "ls | format filesize size KB",
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result: None,
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},
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Example {
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description: "Convert the apparent row to B",
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example: "du | format filesize apparent B",
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result: None,
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},
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]
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}
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}
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async fn process_row(
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input: Value,
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format: Tagged<String>,
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field: Arc<ColumnPath>,
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) -> Result<OutputStream, ShellError> {
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Ok({
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let replace_for = get_data_by_column_path(&input, &field, move |_, _, error| error);
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match replace_for {
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Ok(s) => match convert_bytes_to_string_using_format(s, format) {
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Ok(b) => OutputStream::one(ReturnSuccess::value(
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input.replace_data_at_column_path(&field, b).expect("Given that the existance check was already done, this souldn't trigger never"),
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)),
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Err(e) => OutputStream::one(Err(e)),
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},
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Err(e) => OutputStream::one(Err(e)),
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}
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})
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}
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async fn filesize(
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raw_args: CommandArgs,
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registry: &CommandRegistry,
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) -> Result<OutputStream, ShellError> {
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let registry = registry.clone();
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let (Arguments { field, format }, input) = raw_args.process(®istry).await?;
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let field = Arc::new(field);
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Ok(input
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.then(move |input| {
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let format = format.clone();
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let field = field.clone();
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async {
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match process_row(input, format, field).await {
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Ok(s) => s,
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Err(e) => OutputStream::one(Err(e)),
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}
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}
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})
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.flatten()
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.to_output_stream())
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}
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fn convert_bytes_to_string_using_format(
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bytes: Value,
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format: Tagged<String>,
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) -> Result<Value, ShellError> {
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match bytes.value {
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Primitive(Filesize(b)) => {
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let byte = byte_unit::Byte::from_bytes(b as u128);
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let value = match format.item().to_lowercase().as_str() {
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"b" => Ok(UntaggedValue::string(b.to_formatted_string(&Locale::en))),
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"kb" => Ok(UntaggedValue::string(
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byte.get_adjusted_unit(byte_unit::ByteUnit::KB).to_string(),
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)),
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"kib" => Ok(UntaggedValue::string(
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byte.get_adjusted_unit(byte_unit::ByteUnit::KiB).to_string(),
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)),
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"mb" => Ok(UntaggedValue::string(
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byte.get_adjusted_unit(byte_unit::ByteUnit::MB).to_string(),
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)),
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"mib" => Ok(UntaggedValue::string(
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byte.get_adjusted_unit(byte_unit::ByteUnit::MiB).to_string(),
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)),
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"gb" => Ok(UntaggedValue::string(
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byte.get_adjusted_unit(byte_unit::ByteUnit::GB).to_string(),
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)),
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"gib" => Ok(UntaggedValue::string(
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byte.get_adjusted_unit(byte_unit::ByteUnit::GiB).to_string(),
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)),
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"tb" => Ok(UntaggedValue::string(
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byte.get_adjusted_unit(byte_unit::ByteUnit::TB).to_string(),
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)),
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"tib" => Ok(UntaggedValue::string(
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byte.get_adjusted_unit(byte_unit::ByteUnit::TiB).to_string(),
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)),
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"pb" => Ok(UntaggedValue::string(
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byte.get_adjusted_unit(byte_unit::ByteUnit::PB).to_string(),
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)),
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"pib" => Ok(UntaggedValue::string(
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byte.get_adjusted_unit(byte_unit::ByteUnit::PiB).to_string(),
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)),
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"eb" => Ok(UntaggedValue::string(
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byte.get_adjusted_unit(byte_unit::ByteUnit::EB).to_string(),
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)),
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"eib" => Ok(UntaggedValue::string(
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byte.get_adjusted_unit(byte_unit::ByteUnit::EiB).to_string(),
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)),
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"zb" => Ok(UntaggedValue::string(
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byte.get_adjusted_unit(byte_unit::ByteUnit::ZB).to_string(),
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)),
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"zib" => Ok(UntaggedValue::string(
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byte.get_adjusted_unit(byte_unit::ByteUnit::ZiB).to_string(),
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)),
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_ => Err(ShellError::labeled_error(
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format!("Invalid format code: {:}", format.item()),
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"invalid format",
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format.tag(),
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)),
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};
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match value {
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Ok(b) => Ok(Value { value: b, ..bytes }),
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Err(e) => Err(e),
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}
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}
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_ => Err(ShellError::labeled_error(
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"the data in this row is not of the type filesize",
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"invalid row type",
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bytes.tag(),
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)),
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}
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}
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#[cfg(test)]
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mod tests {
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use super::FileSize;
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use super::ShellError;
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#[test]
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fn examples_work_as_expected() -> Result<(), ShellError> {
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use crate::examples::test as test_examples;
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Ok(test_examples(FileSize {})?)
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}
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}
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