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package hotline
import (
"bytes"
"encoding/binary"
"errors"
"io"
"path/filepath"
"strings"
)
// FilePathItem represents the file or directory portion of a delimited file path (e.g. foo and bar in "/foo/bar")
// 00 00
// 09
// 73 75 62 66 6f 6c 64 65 72 // "subfolder"
type FilePathItem struct {
Len byte
Name []byte
}
type FilePath struct {
ItemCount [2]byte
Items []FilePathItem
}
func (fp *FilePath) UnmarshalBinary(b []byte) error {
reader := bytes.NewReader(b)
err := binary.Read(reader, binary.BigEndian, &fp.ItemCount)
if err != nil && !errors.Is(err, io.EOF) {
return err
}
if errors.Is(err, io.EOF) {
return nil
}
for i := uint16(0); i < fp.Len(); i++ {
// skip two bytes for the file path delimiter
_, _ = reader.Seek(2, io.SeekCurrent)
// read the length of the next pathItem
segLen, err := reader.ReadByte()
if err != nil {
return err
}
pBytes := make([]byte, segLen)
_, err = reader.Read(pBytes)
if err != nil && !errors.Is(err, io.EOF) {
return err
}
fp.Items = append(fp.Items, FilePathItem{Len: segLen, Name: pBytes})
}
return nil
}
func (fp *FilePath) IsDropbox() bool {
if fp.Len() == 0 {
return false
}
return strings.Contains(strings.ToLower(string(fp.Items[fp.Len()-1].Name)), "drop box")
}
func (fp *FilePath) IsUploadDir() bool {
if fp.Len() == 0 {
return false
}
return strings.Contains(strings.ToLower(string(fp.Items[fp.Len()-1].Name)), "upload")
}
func (fp *FilePath) Len() uint16 {
return binary.BigEndian.Uint16(fp.ItemCount[:])
}
func readPath(fileRoot string, filePath, fileName []byte) (fullPath string, err error) {
var fp FilePath
if filePath != nil {
if err = fp.UnmarshalBinary(filePath); err != nil {
return "", err
}
}
var subPath string
for _, pathItem := range fp.Items {
subPath = filepath.Join("/", subPath, string(pathItem.Name))
}
fullPath = filepath.Join(
fileRoot,
subPath,
filepath.Join("/", string(fileName)),
)
return fullPath, nil
}
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