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use std::env;
use std::path::Path;
use git2::{ Repository, Status };
use colored::*;
pub fn vcs_status() -> Option<(colored::ColoredString, colored::ColoredString)> {
let current_dir = env::var("PWD").unwrap();
let mut repo: Option<Repository> = None;
let current_path = Path::new(¤t_dir[..]);
for path in current_path.ancestors() {
match Repository::open(path) {
Ok(r) => {
repo = Some(r);
break;
}
Err(_) => {},
}
}
if repo.is_none() {
return None
}
let repo = repo.unwrap();
let mut commit_dist: String = "".into();
if let Some((ahead, behind)) = get_ahead_behind(&repo) {
if ahead > 0 {
commit_dist.push_str(" ↑");
}
if behind > 0 {
commit_dist.push_str(" ↓");
}
}
let reference = match repo.head() {
Ok(r) => r,
Err(_) => return None
};
let branch;
let branch_color = env::var("BRANCH_COLOR").unwrap_or("bright black".into());
let commit_color = env::var("COMMIT_COLOR").unwrap_or("bright black".into());
if reference.is_branch() {
branch = format!("{}{}", reference.shorthand().unwrap(), commit_dist).color(branch_color);
} else {
let commit = reference.peel_to_commit().unwrap();
let id = commit.id();
branch = format!("{:.6}{}", id, commit_dist).color(commit_color);
}
let git_clean_color = env::var("GIT_CLEAN_COLOR").unwrap_or("green".into());
let git_wt_modified_color = env::var("GIT_WT_MODIFIED_COLOR").unwrap_or("red".into());
let git_index_modified_color = env::var("GIT_INDEX_MODIFIED_COLOR").unwrap_or("yellow".into());
let stat_char = env::var("GIT_CLEAN").unwrap_or("·".into());
let mut repo_stat = stat_char.color(&git_clean_color[..]);
let file_stats = repo.statuses(None).unwrap();
for file in file_stats.iter() {
match file.status() {
// STATE: unstaged (working tree modified)
Status::WT_NEW | Status::WT_MODIFIED |
Status::WT_DELETED | Status::WT_TYPECHANGE |
Status::WT_RENAMED => {
let stat_char = env::var("GIT_WT_MODIFIED").unwrap_or("×".into());
repo_stat = stat_char.color(&git_wt_modified_color[..]);
break;
},
// STATE: staged (changes added to index)
Status::INDEX_NEW | Status::INDEX_MODIFIED |
Status::INDEX_DELETED | Status::INDEX_TYPECHANGE |
Status::INDEX_RENAMED => {
let stat_char = env::var("GIT_INDEX_MODIFIED").unwrap_or("±".into());
repo_stat = stat_char.color(&git_index_modified_color[..]);
},
// STATE: committed (changes have been saved in the repo)
_ => {}
}
}
return Some((branch, repo_stat))
}
fn get_ahead_behind(r: &Repository) -> Option<(usize, usize)> {
let head = (r.head().ok())?;
if !head.is_branch() {
return None
}
let head_name = (head.shorthand())?;
let head_branch = (r.find_branch(head_name, git2::BranchType::Local).ok())?;
let upstream = (head_branch.upstream().ok())?;
let head_oid = (head.target())?;
let upstream_oid = (upstream.get().target())?;
r.graph_ahead_behind(head_oid, upstream_oid).ok()
}
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