31 lines
917 B
Rust
31 lines
917 B
Rust
use crate::errors::ShellError;
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use crate::object::base::find;
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use crate::prelude::*;
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pub fn r#where(args: CommandArgs) -> Result<OutputStream, ShellError> {
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if args.args.is_empty() {
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return Err(ShellError::string("select requires a field"));
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}
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let field: Result<String, _> = args.args[0].as_string();
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let field = field?;
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let input = args.input;
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let operator = args.args[1].copy();
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match operator {
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Value::Primitive(Primitive::Operator(operator)) => {
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let right = args.args[2].copy();
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let objects = input
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.filter(move |item| futures::future::ready(find(&item, &field, &operator, &right)))
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.map(|item| ReturnValue::Value(item.copy()));
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Ok(objects.boxed())
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}
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x => {
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println!("{:?}", x);
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Err(ShellError::string("expected a comparison operator"))
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}
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}
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}
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