74 lines
1.7 KiB
Go
74 lines
1.7 KiB
Go
|
// Copyright 2016 Google Inc. All rights reserved.
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
// you may not use this file except in compliance with the License.
|
||
|
|
// You may obtain a copy of the License at
|
||
|
|
//
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
//
|
||
|
|
// Unless required by applicable law or agreed to in writing, software
|
||
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
// See the License for the specific language governing permissions and
|
||
|
|
// limitations under the License.
|
||
|
|
|
||
|
|
package blueprint
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"io"
|
||
|
|
"io/ioutil"
|
||
|
|
"os"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Based on Andrew Gerrand's "10 things you (probably) dont' know about Go"
|
||
|
|
|
||
|
|
var fs fileSystem = osFS{}
|
||
|
|
|
||
|
|
type fileSystem interface {
|
||
|
|
Open(name string) (io.ReadCloser, error)
|
||
|
|
Exists(name string) (bool, bool, error)
|
||
|
|
}
|
||
|
|
|
||
|
|
// osFS implements fileSystem using the local disk.
|
||
|
|
type osFS struct{}
|
||
|
|
|
||
|
|
func (osFS) Open(name string) (io.ReadCloser, error) { return os.Open(name) }
|
||
|
|
func (osFS) Exists(name string) (bool, bool, error) {
|
||
|
|
stat, err := os.Stat(name)
|
||
|
|
if err == nil {
|
||
|
|
return true, stat.IsDir(), nil
|
||
|
|
} else if os.IsNotExist(err) {
|
||
|
|
return false, false, nil
|
||
|
|
} else {
|
||
|
|
return false, false, err
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
type mockFS struct {
|
||
|
|
files map[string][]byte
|
||
|
|
}
|
||
|
|
|
||
|
|
func (m mockFS) Open(name string) (io.ReadCloser, error) {
|
||
|
|
if f, ok := m.files[name]; ok {
|
||
|
|
return struct {
|
||
|
|
io.Closer
|
||
|
|
*bytes.Reader
|
||
|
|
}{
|
||
|
|
ioutil.NopCloser(nil),
|
||
|
|
bytes.NewReader(f),
|
||
|
|
}, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
return nil, &os.PathError{
|
||
|
|
Op: "open",
|
||
|
|
Path: name,
|
||
|
|
Err: os.ErrNotExist,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (m mockFS) Exists(name string) (bool, bool, error) {
|
||
|
|
_, ok := m.files[name]
|
||
|
|
return ok, false, nil
|
||
|
|
}
|