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A git-based task manager
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Rust
12345678910111213141516171819202122232425262728293031323334353637383940414243use crate::errors::{Error, Result};use std::ffi::OsStr;use std::fmt::Display;use std::io::Write;use std::process::{Command, Stdio};use std::str::FromStr;
/// Sends each item as a line to stdin to the `fzf` command and returns the selected item's string/// representation as outputpub fn select<I, O, S>( input: impl IntoIterator<Item = I>, extra: impl IntoIterator<Item = S>,) -> Result<Option<O>>where O: FromStr, I: Display, Error: From<<O as FromStr>::Err>, S: AsRef<OsStr>,{ let mut command = Command::new("fzf"); let mut child = command .args(extra) .arg("--read0") .stderr(Stdio::inherit()) .stdin(Stdio::piped()) .stdout(Stdio::piped()) .spawn()?; // unwrap: this can never fail let child_in = child.stdin.as_mut().unwrap(); for item in input.into_iter() { write!(child_in, "{item}\0")?; } let output = child.wait_with_output()?; if output.stdout.is_empty() { Ok(None) } else { // fzf appends a trailing newline; strip it so the FromStr impls // (Id, String, usize, etc.) all work. let raw = String::from_utf8(output.stdout)?; Ok(Some(raw.trim().parse()?)) }}