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filemetainfo.go
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/
filemetainfo.go
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package valueobject
import (
"fmt"
"github.com/spf13/afero"
"io/fs"
"os"
)
type FileMetaInfo interface {
fs.DirEntry
os.FileInfo
Meta() *FileMeta
}
func NewFileMetaInfo(fi FileNameIsDir, m *FileMeta) FileMetaInfo {
if m == nil {
panic("FileMeta must be set")
}
if fim, ok := fi.(MetaProvider); ok {
m.Merge(fim.Meta())
}
switch v := fi.(type) {
case fs.DirEntry:
return &dirEntryMeta{DirEntry: v, m: m}
case fs.FileInfo:
return &dirEntryMeta{DirEntry: dirEntry{v}, m: m}
case nil:
return &dirEntryMeta{DirEntry: dirEntry{}, m: m}
default:
panic(fmt.Sprintf("Unsupported type: %T", fi))
}
}
func DecorateFileInfo(fi FileNameIsDir, opener func() (afero.File, error), filename string, inMeta *FileMeta) FileMetaInfo {
var meta *FileMeta
var fim FileMetaInfo
var ok bool
if fim, ok = fi.(FileMetaInfo); ok {
meta = fim.Meta()
} else {
meta = NewFileMeta()
fim = NewFileMetaInfo(fi, meta)
}
if opener != nil {
meta.OpenFunc = opener
}
nfilename := normalizeFilename(filename)
if nfilename != "" {
meta.Filename = nfilename
}
meta.Merge(inMeta)
return fim
}