1package git
 2
 3import (
 4	"fmt"
 5
 6	"github.com/go-git/go-git/v5"
 7	"github.com/go-git/go-git/v5/plumbing"
 8	"github.com/go-git/go-git/v5/plumbing/object"
 9)
10
11func AllCommits(r *git.Repository) ([]*object.Commit, error) {
12	ci, err := r.Log(&git.LogOptions{All: true})
13	if err != nil {
14		return nil, fmt.Errorf("all commits: %w", err)
15	}
16
17	commits := []*object.Commit{}
18	ci.ForEach(func(c *object.Commit) error {
19		commits = append(commits, c)
20		return nil
21	})
22
23	return commits, nil
24}
25
26// A nicer git tree representation.
27type NiceTree struct {
28	Name   string
29	Mode   string
30	Size   int64
31	IsFile bool
32}
33
34func FilesAtHead(r *git.Repository, path string) ([]NiceTree, error) {
35	head, err := r.Head()
36	if err != nil {
37		return nil, fmt.Errorf("getting head: %w", err)
38	}
39
40	return FilesAtRef(r, head, path)
41}
42
43func FilesAtRef(r *git.Repository, ref *plumbing.Reference, path string) ([]NiceTree, error) {
44	c, err := r.CommitObject(ref.Hash())
45	if err != nil {
46		return nil, fmt.Errorf("commit object: %w", err)
47	}
48
49	files := []NiceTree{}
50	tree, err := c.Tree()
51	if err != nil {
52		return nil, fmt.Errorf("file tree: %w", err)
53	}
54
55	if path == "" {
56		files = makeNiceTree(tree.Entries)
57	} else {
58		o, err := tree.FindEntry(path)
59		if err != nil {
60			return nil, err
61		}
62
63		if !o.Mode.IsFile() {
64			subtree, err := tree.Tree(path)
65			if err != nil {
66				return nil, err
67			}
68
69			files = makeNiceTree(subtree.Entries)
70		}
71	}
72
73	return files, nil
74}
75
76func makeNiceTree(es []object.TreeEntry) []NiceTree {
77	nts := []NiceTree{}
78	for _, e := range es {
79		mode, _ := e.Mode.ToOSFileMode()
80		nts = append(nts, NiceTree{
81			Name:   e.Name,
82			Mode:   mode.String(),
83			IsFile: e.Mode.IsFile(),
84		})
85	}
86
87	return nts
88}