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use git2::{Cred, FetchOptions, RemoteCallbacks, Repository, build::CheckoutBuilder};
use std::env;
use std::fs;
use std::io;
use std::io::Write;
use std::path::Path;
use std::process::Command;
pub fn dir_size(path: &Path) -> std::io::Result<u64> {
let mut size = 0;
if path.is_dir() {
for entry in fs::read_dir(path)? {
let entry = entry?;
let metadata = entry.metadata()?;
if metadata.is_file() {
size += metadata.len();
} else if metadata.is_dir() {
size += dir_size(&entry.path())?;
}
}
}
Ok(size)
}
pub fn get_editor() -> String {
env::var("VISUAL")
.or_else(|_| env::var("EDITOR"))
.unwrap_or_else(|_| "nano".to_string())
}
pub fn open_in_editor(editor: &str, file: &str) -> Result<(), String> {
let status = Command::new(editor)
.arg(file)
.status()
.map_err(|e| format!("failed to execute editor: {}", e))?;
if !status.success() {
return Err(format!("editor exited with non-zero status: {}", status));
}
Ok(())
}
pub fn pull_repo(path: &Path) -> Result<(), git2::Error> {
let repo = Repository::open(path)?;
let head = repo.head()?;
let branch = head
.shorthand()
.ok_or_else(|| git2::Error::from_str("Could not determine current branch"))?;
let mut callbacks = RemoteCallbacks::new();
callbacks.credentials(|_url, username_from_url, _allowed| {
Cred::ssh_key_from_agent(username_from_url.unwrap())
});
let mut fetch_options = FetchOptions::new();
fetch_options.remote_callbacks(callbacks);
let mut remote = repo.find_remote("origin")?;
remote.fetch(&[branch], Some(&mut fetch_options), None)?;
let fetch_head = repo.find_reference("FETCH_HEAD")?;
let fetch_commit = repo.reference_to_annotated_commit(&fetch_head)?;
let (analysis, _pref) = repo.merge_analysis(&[&fetch_commit])?;
if analysis.is_fast_forward() {
println!("Fast-forwarding...");
let refname = format!("refs/heads/{}", branch);
let mut reference = repo.find_reference(&refname)?;
reference.set_target(fetch_commit.id(), "Fast-Forward")?;
repo.set_head(&refname)?;
repo.checkout_head(Some(CheckoutBuilder::default().force()))?;
} else if analysis.is_up_to_date() {
println!("Already up to date.");
} else {
println!("Non fast-forward merge required (manual merge needed).");
}
Ok(())
}
pub fn yn_prompt(prompt: &str) -> bool {
print!("{} [y/n]: ", prompt);
io::stdout().flush().unwrap();
// Read input from user
let mut input = String::new();
io::stdin().read_line(&mut input).unwrap();
// Normalize input
let input = input.trim().to_lowercase();
match input.as_str() {
"y" | "yes" | "" => true,
_ => false,
}
}
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