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dir.go
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dir.go
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package genfs
import (
"bytes"
"io/fs"
"path"
"github.com/matthewmueller/genfs/internal/cache"
"github.com/matthewmueller/genfs/internal/tree"
"github.com/matthewmueller/virt"
)
type Dir struct {
fsys fs.FS
tree *tree.Tree
target string
dir string
mode fs.FileMode
}
func (d *Dir) Target() string {
return d.target
}
func (d *Dir) Path() string {
return d.dir
}
func (d *Dir) Mode() fs.FileMode {
return d.mode
}
func (d *Dir) Relative() string {
return relativePath(d.dir, d.target)
}
func (d *Dir) GenerateFile(relpath string, fn func(fsys FS, file *File) error) error {
return d.tree.GenerateFile(path.Join(d.dir, relpath), GeneratorFunc(func(cache cache.Interface, target string) (*virt.File, error) {
file := &File{target, relpath, fs.FileMode(0), &bytes.Buffer{}}
fsys := scopedFS{d.fsys, cache, relpath}
if err := fn(fsys, file); err != nil {
return nil, err
}
return &virt.File{
Path: relpath,
Mode: file.Mode(),
Data: file.data.Bytes(),
}, nil
}))
}
func (d *Dir) FileGenerator(relpath string, generator FileGenerator) error {
return d.GenerateFile(relpath, generator.GenerateFile)
}
func (d *Dir) GenerateDir(reldir string, fn func(fsys FS, dir *Dir) error) error {
reldir = path.Join(d.dir, reldir)
return d.tree.GenerateDir(reldir, GeneratorFunc(func(cache cache.Interface, target string) (*virt.File, error) {
dir := &Dir{d.fsys, d.tree, target, reldir, fs.ModeDir}
fsys := scopedFS{d.fsys, cache, reldir}
if err := fn(fsys, dir); err != nil {
return nil, err
}
return &virt.File{
Path: reldir,
Mode: dir.mode,
// Intentionally nil, filled in by the tree
Entries: nil,
}, nil
}))
}
func (d *Dir) DirGenerator(reldir string, generator DirGenerator) error {
return d.GenerateDir(reldir, generator.GenerateDir)
}