radicle_source/
branch.rs

1// This file is part of radicle-surf
2// <https://github.com/radicle-dev/radicle-surf>
3//
4// Copyright (C) 2019-2020 The Radicle Team <dev@radicle.xyz>
5//
6// This program is free software: you can redistribute it and/or modify
7// it under the terms of the GNU General Public License version 3 or
8// later as published by the Free Software Foundation.
9//
10// This program is distributed in the hope that it will be useful,
11// but WITHOUT ANY WARRANTY; without even the implied warranty of
12// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13// GNU General Public License for more details.
14//
15// You should have received a copy of the GNU General Public License
16// along with this program. If not, see <https://www.gnu.org/licenses/>.
17
18use std::fmt;
19
20use serde::{Deserialize, Serialize};
21
22use radicle_surf::vcs::git::{self, Browser, RefScope};
23
24use crate::error::Error;
25
26/// Branch name representation.
27#[derive(Clone, Debug, Eq, Ord, PartialEq, PartialOrd, Deserialize, Serialize)]
28pub struct Branch(pub(crate) String);
29
30impl From<String> for Branch {
31    fn from(name: String) -> Self {
32        Self(name)
33    }
34}
35
36impl From<git::Branch> for Branch {
37    fn from(branch: git::Branch) -> Self {
38        Self(branch.name.to_string())
39    }
40}
41
42impl fmt::Display for Branch {
43    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
44        write!(f, "{}", self.0)
45    }
46}
47
48/// Given a project id to a repo returns the list of branches.
49///
50/// # Errors
51///
52/// Will return [`Error`] if the project doesn't exist or the surf interaction
53/// fails.
54pub fn branches(browser: &Browser<'_>, filter: RefScope) -> Result<Vec<Branch>, Error> {
55    let mut branches = browser
56        .list_branches(filter)?
57        .into_iter()
58        .map(|b| Branch(b.name.name().to_string()))
59        .collect::<Vec<Branch>>();
60
61    branches.sort();
62
63    Ok(branches)
64}
65
66/// Information about a locally checked out repository.
67#[derive(Deserialize, Serialize)]
68pub struct LocalState {
69    /// List of branches.
70    branches: Vec<Branch>,
71}
72
73/// Given a path to a repo returns the list of branches and if it is managed by
74/// coco.
75///
76/// # Errors
77///
78/// Will return [`Error`] if the repository doesn't exist.
79pub fn local_state(repo_path: &str, default_branch: &str) -> Result<LocalState, Error> {
80    let repo = git2::Repository::open(repo_path).map_err(git::error::Error::from)?;
81    let first_branch = repo
82        .branches(Some(git2::BranchType::Local))
83        .map_err(git::error::Error::from)?
84        .filter_map(|branch_result| {
85            let (branch, _) = branch_result.ok()?;
86            let name = branch.name().ok()?;
87            name.map(String::from)
88        })
89        .min()
90        .ok_or(Error::NoBranches)?;
91
92    let repo = git::Repository::new(repo_path)?;
93
94    let browser = match Browser::new(&repo, git::Branch::local(default_branch)) {
95        Ok(browser) => browser,
96        Err(_) => Browser::new(&repo, git::Branch::local(&first_branch))?,
97    };
98
99    let mut branches = browser
100        .list_branches(RefScope::Local)?
101        .into_iter()
102        .map(|b| Branch(b.name.name().to_string()))
103        .collect::<Vec<Branch>>();
104
105    branches.sort();
106
107    Ok(LocalState { branches })
108}
radicle_source/branch.rs

radicle_source/
branch.rs
