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Add integrity, fingerprint etc. filters for resources
Fixes gohugoio#4381
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| // Copyright 2018 The Hugo Authors. 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 hugofs | ||
|
|
||
| import ( | ||
| "os" | ||
|
|
||
| "github.com/spf13/afero" | ||
| ) | ||
|
|
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| // RealFilenameInfo is a thin wrapper around os.FileInfo adding the real filename. | ||
| type RealFilenameInfo interface { | ||
| os.FileInfo | ||
|
|
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| // This is the real filename to the file in the underlying filesystem. | ||
| RealFilename() string | ||
| } | ||
|
|
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| type realFilenameInfo struct { | ||
| os.FileInfo | ||
| realFilename string | ||
| } | ||
|
|
||
| func (f *realFilenameInfo) RealFilename() string { | ||
| return f.realFilename | ||
| } | ||
|
|
||
| func NewBasePathRealFilenameFs(base *afero.BasePathFs) *BasePathRealFilenameFs { | ||
| return &BasePathRealFilenameFs{BasePathFs: base} | ||
| } | ||
|
|
||
| // This is a thin wrapper around afero.BasePathFs that provides the real filename | ||
| // in Stat and LstatIfPossible. | ||
| type BasePathRealFilenameFs struct { | ||
| *afero.BasePathFs | ||
| } | ||
|
|
||
| func (b *BasePathRealFilenameFs) Stat(name string) (os.FileInfo, error) { | ||
| fi, err := b.BasePathFs.Stat(name) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| if _, ok := fi.(RealFilenameInfo); ok { | ||
| return fi, nil | ||
| } | ||
|
|
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| filename, err := b.RealPath(name) | ||
| if err != nil { | ||
| return nil, &os.PathError{Op: "stat", Path: name, Err: err} | ||
| } | ||
|
|
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| return &realFilenameInfo{FileInfo: fi, realFilename: filename}, nil | ||
| } | ||
|
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| func (b *BasePathRealFilenameFs) LstatIfPossible(name string) (os.FileInfo, bool, error) { | ||
|
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| fi, ok, err := b.BasePathFs.LstatIfPossible(name) | ||
| if err != nil { | ||
| return nil, false, err | ||
| } | ||
|
|
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| if _, ok := fi.(RealFilenameInfo); ok { | ||
| return fi, ok, nil | ||
| } | ||
|
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| filename, err := b.RealPath(name) | ||
| if err != nil { | ||
| return nil, false, &os.PathError{Op: "lstat", Path: name, Err: err} | ||
| } | ||
|
|
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| return &realFilenameInfo{FileInfo: fi, realFilename: filename}, ok, nil | ||
| } |
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