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100 lines
2.3 KiB
100 lines
2.3 KiB
extern crate dirs;
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extern crate git2;
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extern crate curl;
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extern crate derive_more;
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use std::path::PathBuf;
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use std::io::Write;
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use std::fs::File;
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use derive_more::{Display, From};
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use git2::Repository;
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use git2::build::RepoBuilder;
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use curl::easy::Easy;
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#[derive(Debug, From, Display)]
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enum RetrievingError {
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Git(git2::Error),
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Curl(curl::Error),
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IO(std::io::Error),
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}
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fn config_path() -> PathBuf {
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let mut config_dir = dirs::config_dir().expect("cannot open config dir");
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config_dir.push("gitmoji-rust");
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config_dir
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}
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fn clone_or_open_bare(url: &str, path: &PathBuf) -> Result<Repository, git2::Error> {
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if path.is_dir() {
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Repository::open_bare(path)
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} else {
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RepoBuilder::new()
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.bare(true)
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.clone(url, path)
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}
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}
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fn emojis_need_update() -> Result<bool, RetrievingError> {
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let gitmoji_url = "https://github.com/carloscuesta/gitmoji/";
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//path to the "gitmoji" git repo
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let mut repo_path = config_path();
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repo_path.push("gitmoji");
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let repo_path = repo_path;
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let repo = clone_or_open_bare(gitmoji_url, &repo_path)?;
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//OID of the local master branch
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let mut master = repo.find_reference("refs/heads/master")?;
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let local_oid = master.peel_to_commit()?.id();
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//fetch updates
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repo.find_remote("origin")?.fetch(&["master"], None, None)?;
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//OID of the remote master branch
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let remote_oid = repo.find_reference("refs/remotes/origin/master")?
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.peel_to_commit()?
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.id();
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if local_oid == remote_oid {
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return Ok(false);
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}
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//fast-forward the local branch to the remote
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master.set_target(remote_oid, "")?;
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Ok(true)
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}
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fn update_emojis() -> Result<(), RetrievingError> {
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if !emojis_need_update()? {
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return Ok(());
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}
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let mut json_path = config_path();
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json_path.push("gitmoji.json");
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let json_path = json_path;
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let mut file = File::create(&json_path)?;
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let mut curl = Easy::new();
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curl.url("https://raw.githubusercontent.com/carloscuesta/gitmoji/master/src/data/gitmojis.json")?;
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let mut transfer = curl.transfer();
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transfer.write_function(|data| {
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file.write_all(data).unwrap();
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Ok(data.len())
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})?;
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transfer.perform()?;
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Ok(())
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}
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fn main() {
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update_emojis().unwrap();
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}
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