hugo/hugofs/fs.go

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// Copyright 2016 The Hugo Authors. All rights reserved.
//
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// 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
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// 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.
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// Package hugofs provides the file systems used by Hugo.
package hugofs
import (
"github.com/spf13/afero"
"github.com/spf13/viper"
)
var (
sourceFs afero.Fs
destinationFs afero.Fs
osFs afero.Fs = &afero.OsFs{}
workingDirFs *afero.BasePathFs
)
// Source returns Hugo's source file system.
func Source() afero.Fs {
return sourceFs
}
// SetSource sets Hugo's source file system
// and re-initializes dependent file systems.
func SetSource(fs afero.Fs) {
sourceFs = fs
initSourceDependencies()
}
// Destination returns Hugo's destionation file system.
func Destination() afero.Fs {
return destinationFs
}
// SetDestination sets Hugo's destionation file system
func SetDestination(fs afero.Fs) {
destinationFs = fs
}
// Os returns an OS file system.
func Os() afero.Fs {
return osFs
}
// WorkingDir returns a read-only file system
// restricted to the project working dir.
func WorkingDir() *afero.BasePathFs {
return workingDirFs
}
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// InitDefaultFs initializes with the OS file system
// as source and destination file systems.
func InitDefaultFs() {
InitFs(&afero.OsFs{})
}
// InitMemFs initializes with a MemMapFs as source and destination file systems.
// Useful for testing.
func InitMemFs() {
InitFs(&afero.MemMapFs{})
}
// InitFs initializes with the given file system
// as source and destination file systems.
func InitFs(fs afero.Fs) {
sourceFs = fs
destinationFs = fs
initSourceDependencies()
}
func initSourceDependencies() {
workingDir := viper.GetString("WorkingDir")
if workingDir != "" {
workingDirFs = afero.NewBasePathFs(afero.NewReadOnlyFs(sourceFs), workingDir).(*afero.BasePathFs)
}
}
func init() {
InitDefaultFs()
}