git.r.bdr.sh - rbdr/mobius/blob - file_path.go

   1 package hotline
   2
   3 import (
   4         "encoding/binary"
   5         "strings"
   6 )
   7
   8 const pathSeparator = "/" // File path separator TODO: make configurable to support Windows
   9
  10 // FilePathItem represents the file or directory portion of a delimited file path (e.g. foo and bar in "/foo/bar")
  11 // 00 00
  12 // 09
  13 // 73 75 62 66 6f 6c 64 65 72 // "subfolder"
  14 type FilePathItem struct {
  15         Len  byte
  16         Name []byte
  17 }
  18
  19 func NewFilePathItem(b []byte) FilePathItem {
  20         return FilePathItem{
  21                 Len:  b[2],
  22                 Name: b[3:],
  23         }
  24 }
  25
  26 type FilePath struct {
  27         PathItemCount []byte
  28         PathItems     []FilePathItem
  29 }
  30
  31 func NewFilePath(b []byte) FilePath {
  32         if b == nil {
  33                 return FilePath{}
  34         }
  35
  36         fp := FilePath{PathItemCount: b[0:2]}
  37
  38         // number of items in the path
  39         pathItemLen := binary.BigEndian.Uint16(b[0:2])
  40         pathData := b[2:]
  41         for i := uint16(0); i < pathItemLen; i++ {
  42                 segLen := pathData[2]
  43                 fp.PathItems = append(fp.PathItems, NewFilePathItem(pathData[:segLen+3]))
  44                 pathData = pathData[3+segLen:]
  45         }
  46
  47         return fp
  48 }
  49
  50 func (fp *FilePath) String() string {
  51         var out []string
  52         for _, i := range fp.PathItems {
  53                 out = append(out, string(i.Name))
  54         }
  55         return strings.Join(out, pathSeparator)
  56 }