49 lines
1.5 KiB
Rust
49 lines
1.5 KiB
Rust
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//! Example using Repl with Context
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use reedline_repl_rs::clap::{Arg, ArgMatches, Command};
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use reedline_repl_rs::{Repl, Result};
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use std::collections::VecDeque;
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#[derive(Default)]
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struct Context {
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list: VecDeque<String>,
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}
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/// Append name to list
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fn append(args: ArgMatches, context: &mut Context) -> Result<Option<String>> {
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let name: String = args.value_of("name").unwrap().to_string();
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context.list.push_back(name);
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let list: Vec<String> = context.list.clone().into();
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Ok(Some(list.join(", ")))
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}
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/// Prepend name to list
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fn prepend(args: ArgMatches, context: &mut Context) -> Result<Option<String>> {
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let name: String = args.value_of("name").unwrap().to_string();
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context.list.push_front(name);
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let list: Vec<String> = context.list.clone().into();
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Ok(Some(list.join(", ")))
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}
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fn main() -> Result<()> {
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let mut repl = Repl::new(Context::default())
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.with_name("MyList")
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.with_version("v0.1.0")
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.with_description("My very cool List")
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.with_command(
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Command::new("append")
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.arg(Arg::new("name").required(true))
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.about("Append name to end of list"),
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append,
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)
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.with_command(
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Command::new("prepend")
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.arg(Arg::new("name").required(true))
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.about("Prepend name to front of list"),
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prepend,
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)
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.with_on_after_command(|context| Ok(Some(format!("MyList [{}]", context.list.len()))));
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repl.run()
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}
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