platform_build_soong/mk2rbc/find_mockfs.go
Sasha Smundak 6609ba7664 Allow dynamically calculated inherit-product path
Bug: 193566316
Test: internal
Change-Id: Iaa7b68cf459f9a694ae9d37a32c9372cf8a8335a
2021-08-02 14:35:45 -07:00

121 lines
2.2 KiB
Go

package mk2rbc
import (
"io/fs"
"os"
"path/filepath"
"time"
)
// Mock FS. Maps a directory name to an array of entries.
// An entry implements fs.DirEntry, fs.FIleInfo and fs.File interface
type FindMockFS struct {
dirs map[string][]myFileInfo
}
func (m FindMockFS) locate(name string) (myFileInfo, bool) {
if name == "." {
return myFileInfo{".", true}, true
}
dir := filepath.Dir(name)
base := filepath.Base(name)
if entries, ok := m.dirs[dir]; ok {
for _, e := range entries {
if e.name == base {
return e, true
}
}
}
return myFileInfo{}, false
}
func (m FindMockFS) create(name string, isDir bool) {
dir := filepath.Dir(name)
m.dirs[dir] = append(m.dirs[dir], myFileInfo{filepath.Base(name), isDir})
}
func (m FindMockFS) Stat(name string) (fs.FileInfo, error) {
if fi, ok := m.locate(name); ok {
return fi, nil
}
return nil, os.ErrNotExist
}
type myFileInfo struct {
name string
isDir bool
}
func (m myFileInfo) Info() (fs.FileInfo, error) {
panic("implement me")
}
func (m myFileInfo) Size() int64 {
panic("implement me")
}
func (m myFileInfo) Mode() fs.FileMode {
panic("implement me")
}
func (m myFileInfo) ModTime() time.Time {
panic("implement me")
}
func (m myFileInfo) Sys() interface{} {
return nil
}
func (m myFileInfo) Stat() (fs.FileInfo, error) {
return m, nil
}
func (m myFileInfo) Read(bytes []byte) (int, error) {
panic("implement me")
}
func (m myFileInfo) Close() error {
panic("implement me")
}
func (m myFileInfo) Name() string {
return m.name
}
func (m myFileInfo) IsDir() bool {
return m.isDir
}
func (m myFileInfo) Type() fs.FileMode {
return m.Mode()
}
func (m FindMockFS) Open(name string) (fs.File, error) {
panic("implement me")
}
func (m FindMockFS) ReadDir(name string) ([]fs.DirEntry, error) {
if d, ok := m.dirs[name]; ok {
var res []fs.DirEntry
for _, e := range d {
res = append(res, e)
}
return res, nil
}
return nil, os.ErrNotExist
}
func NewFindMockFS(files []string) FindMockFS {
myfs := FindMockFS{make(map[string][]myFileInfo)}
for _, f := range files {
isDir := false
for f != "." {
if _, ok := myfs.locate(f); !ok {
myfs.create(f, isDir)
}
isDir = true
f = filepath.Dir(f)
}
}
return myfs
}