60 lines
1.3 KiB
Go
60 lines
1.3 KiB
Go
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// SPDX-FileCopyrightText: 2023 Luke Granger-Brown <depot@lukegb.com>
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//
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// SPDX-License-Identifier: Apache-2.0
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package nar
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import "os"
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type InmemoryDirent struct {
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SubFS *InmemoryFS
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Content []byte
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Executable bool
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Target string
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}
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func (dent *InmemoryDirent) Close() error { return nil }
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func (dent *InmemoryDirent) Write(bs []byte) (int, error) {
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dent.Content = append(dent.Content, bs...)
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return len(bs), nil
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}
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func (dent *InmemoryDirent) MakeExecutable() error {
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dent.Executable = true
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return nil
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}
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type InmemoryFS struct {
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Dirent map[string]*InmemoryDirent
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}
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func (fs *InmemoryFS) Create(name string) (WriteFile, error) {
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if _, ok := fs.Dirent[name]; ok {
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return nil, os.ErrExist
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}
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dent := &InmemoryDirent{}
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fs.Dirent[name] = dent
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return dent, nil
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}
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func (fs *InmemoryFS) Symlink(name, target string) error {
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if _, ok := fs.Dirent[name]; ok {
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return os.ErrExist
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}
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dent := &InmemoryDirent{Target: target}
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fs.Dirent[name] = dent
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return nil
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}
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func (fs *InmemoryFS) Mkdir(name string) (WriteFS, error) {
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if _, ok := fs.Dirent[name]; ok {
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return nil, os.ErrExist
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}
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dent := &InmemoryDirent{SubFS: NewInmemoryFS()}
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fs.Dirent[name] = dent
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return dent.SubFS, nil
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}
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func NewInmemoryFS() *InmemoryFS {
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return &InmemoryFS{Dirent: make(map[string]*InmemoryDirent)}
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}
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