Tommy van der Vorst
f15d50c2e8
For Synctrain I would like to create a virtual filesystem that exposes iOS' photo library. This can only be accessed through APIs.
40 lines
1.5 KiB
Go
40 lines
1.5 KiB
Go
// Copyright (C) 2016 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package fs
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import "sync"
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type FilesystemType string
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// Option modifies a filesystem at creation. An option might be specific
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// to a filesystem-type.
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//
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// String is used to detect options with the same effect, i.e. must be different
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// for options with different effects. Meaning if an option has parameters, a
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// representation of those must be part of the returned string.
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type Option interface {
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String() string
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apply(Filesystem) Filesystem
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}
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// Factory function type for constructing a custom file system. It takes the URI
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// and options as its parameters.
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type FilesystemFactory func(string, ...Option) (Filesystem, error)
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// For each registered file system type, a function to construct a file system.
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var filesystemFactories map[FilesystemType]FilesystemFactory = make(map[FilesystemType]FilesystemFactory)
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var filesystemFactoriesMutex sync.Mutex = sync.Mutex{}
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// Register a function to be called when a filesystem is to be constructed with
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// the specified fsType. The function will receive the URI for the file system as well
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// as all options.
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func RegisterFilesystemType(fsType FilesystemType, fn FilesystemFactory) {
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filesystemFactoriesMutex.Lock()
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defer filesystemFactoriesMutex.Unlock()
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filesystemFactories[fsType] = fn
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}
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