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1package mk2rbc
2
3import (
4	"io/fs"
5	"os"
6	"path/filepath"
7	"time"
8)
9
10// Mock FS. Maps a directory name to an array of entries.
11// An entry implements fs.DirEntry, fs.FIleInfo and fs.File interface
12type FindMockFS struct {
13	dirs map[string][]myFileInfo
14}
15
16func (m FindMockFS) locate(name string) (myFileInfo, bool) {
17	if name == "." {
18		return myFileInfo{".", true}, true
19	}
20	dir := filepath.Dir(name)
21	base := filepath.Base(name)
22	if entries, ok := m.dirs[dir]; ok {
23		for _, e := range entries {
24			if e.name == base {
25				return e, true
26			}
27		}
28	}
29	return myFileInfo{}, false
30}
31
32func (m FindMockFS) create(name string, isDir bool) {
33	dir := filepath.Dir(name)
34	m.dirs[dir] = append(m.dirs[dir], myFileInfo{filepath.Base(name), isDir})
35}
36
37func (m FindMockFS) Stat(name string) (fs.FileInfo, error) {
38	if fi, ok := m.locate(name); ok {
39		return fi, nil
40	}
41	return nil, os.ErrNotExist
42}
43
44type myFileInfo struct {
45	name  string
46	isDir bool
47}
48
49func (m myFileInfo) Info() (fs.FileInfo, error) {
50	panic("implement me")
51}
52
53func (m myFileInfo) Size() int64 {
54	panic("implement me")
55}
56
57func (m myFileInfo) Mode() fs.FileMode {
58	panic("implement me")
59}
60
61func (m myFileInfo) ModTime() time.Time {
62	panic("implement me")
63}
64
65func (m myFileInfo) Sys() interface{} {
66	return nil
67}
68
69func (m myFileInfo) Stat() (fs.FileInfo, error) {
70	return m, nil
71}
72
73func (m myFileInfo) Read(bytes []byte) (int, error) {
74	panic("implement me")
75}
76
77func (m myFileInfo) Close() error {
78	panic("implement me")
79}
80
81func (m myFileInfo) Name() string {
82	return m.name
83}
84
85func (m myFileInfo) IsDir() bool {
86	return m.isDir
87}
88
89func (m myFileInfo) Type() fs.FileMode {
90	return m.Mode()
91}
92
93func (m FindMockFS) Open(name string) (fs.File, error) {
94	panic("implement me")
95}
96
97func (m FindMockFS) ReadDir(name string) ([]fs.DirEntry, error) {
98	if d, ok := m.dirs[name]; ok {
99		var res []fs.DirEntry
100		for _, e := range d {
101			res = append(res, e)
102		}
103		return res, nil
104	}
105	return nil, os.ErrNotExist
106}
107
108func NewFindMockFS(files []string) FindMockFS {
109	myfs := FindMockFS{make(map[string][]myFileInfo)}
110	for _, f := range files {
111		isDir := false
112		for f != "." {
113			if _, ok := myfs.locate(f); !ok {
114				myfs.create(f, isDir)
115			}
116			isDir = true
117			f = filepath.Dir(f)
118		}
119	}
120	return myfs
121}
122