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use crate::env::pager::get_default_pager;
use tokio::{fs, process::Command};
/// Show text using the system pager (less)
/// Opens the system pager (less) with the given text content written to the specified file
/// If less is not found, directly outputs the content to stdout
pub async fn pager(
content: impl AsRef<str>,
cache_file: impl AsRef<std::path::Path>,
) -> Result<(), std::io::Error> {
let content_str = content.as_ref();
let cache_path = cache_file.as_ref();
// Write content to cache file
fs::write(cache_path, content_str).await?;
// Get the default pager
let pager_cmd = get_default_pager();
// Try to use the pager
let status = Command::new(&pager_cmd).arg(cache_path).status().await;
match status {
Ok(status) if status.success() => Ok(()),
_ => {
// If pager failed, output directly to stdout
use tokio::io::{self, AsyncWriteExt};
let mut stdout = io::stdout();
stdout
.write_all(content_str.as_bytes())
.await
.expect("Failed to write content");
stdout.flush().await.expect("Failed to flush stdout");
Ok(())
}
}
}
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