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use super::{Context, Module, RootModuleConfig};
use git2::Repository;
use crate::configs::git_commit::GitCommitConfig;
/// Creates a module with the Git commit in the current directory
///
/// Will display the commit hash if the current directory is a git repo
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
let mut module = context.new_module("git_commit");
let config = GitCommitConfig::try_load(module.config);
if config.disabled {
return None;
};
module
.get_prefix()
.set_value(config.prefix)
.set_style(config.style);
module
.get_suffix()
.set_value(config.suffix)
.set_style(config.style);
module.set_style(config.style);
let repo = context.get_repo().ok()?;
let repo_root = repo.root.as_ref()?;
let git_repo = Repository::open(repo_root).ok()?;
let git_head = git_repo.head().ok()?;
let head_commit = git_head.peel_to_commit().ok()?;
let commit_oid = head_commit.id();
module.create_segment(
"hash",
&config.hash.with_value(&id_to_hex_abbrev(
commit_oid.as_bytes(),
config.commit_hash_length,
)),
);
Some(module)
}
/// len specifies length of hex encoded string
pub fn id_to_hex_abbrev(bytes: &[u8], len: usize) -> String {
bytes
.iter()
.map(|b| format!("{:02x}", b))
.collect::<Vec<String>>()
.join("")
.chars()
.take(len)
.collect()
}
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