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vfs.go
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vfs.go
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package dirtree
import (
"fmt"
"os"
"path"
"github.com/mandelsoft/goutils/errors"
"github.com/mandelsoft/vfs/pkg/vfs"
"github.com/open-component-model/ocm/pkg/utils"
)
func NewVFSDirNode(ctx Context, p string, fss ...vfs.FileSystem) (*DirNode, error) {
fs := utils.FileSystem(fss...)
f, err := fs.Stat(p)
if err != nil {
return nil, err
}
if !f.IsDir() {
return nil, fmt.Errorf("no directory")
}
entries, err := vfs.ReadDir(fs, p)
if err != nil {
return nil, err
}
d := NewDirNode(ctx)
for _, e := range entries {
var n Node
if e.IsDir() {
n, err = NewVFSDirNode(ctx, path.Join(p, e.Name()), fs)
} else {
n, err = NewVFSFileNode(ctx, path.Join(p, e.Name()), fs)
}
if err != nil {
return nil, err
}
err = d.AddNode(path.Base(e.Name()), n)
if err != nil {
return nil, err
}
}
d.Complete()
return d, nil
}
func NewVFSFileNode(ctx Context, p string, fss ...vfs.FileSystem) (Node, error) {
fs := utils.FileSystem(fss...)
fi, err := fs.Lstat(p)
if err != nil {
return nil, err
}
t := fi.Mode() & os.ModeType
if t != 0 && t != os.ModeSymlink {
return nil, errors.ErrNotSupported("filetype", fmt.Sprintf("%o", t))
}
if t == os.ModeSymlink {
l, err := fs.Readlink(p)
if err != nil {
return nil, err
}
return NewLinkNode(ctx, l)
}
f, err := fs.Open(p)
if err != nil {
return nil, err
}
defer f.Close()
return NewFileNode(ctx, fi.Mode(), fi.Size(), f)
}