git.r.bdr.sh - rbdr/mobius/blob - hotline/files.go

   1 package hotline
   2
   3 import (
   4         "encoding/binary"
   5         "io/ioutil"
   6         "os"
   7         "path/filepath"
   8         "strings"
   9 )
  10
  11 const defaultCreator = "TTXT"
  12 const defaultType = "TEXT"
  13
  14 var fileCreatorCodes = map[string]string{
  15         "sit": "SIT!",
  16         "pdf": "CARO",
  17 }
  18
  19 var fileTypeCodes = map[string]string{
  20         "sit": "SIT!",
  21         "jpg": "JPEG",
  22         "pdf": "PDF ",
  23 }
  24
  25 func fileTypeFromFilename(fn string) string {
  26         ext := strings.Split(fn, ".")
  27         code := fileTypeCodes[ext[len(ext)-1]]
  28
  29         if code == "" {
  30                 code = defaultType
  31         }
  32
  33         return code
  34 }
  35
  36 func fileCreatorFromFilename(fn string) string {
  37         ext := strings.Split(fn, ".")
  38         code := fileCreatorCodes[ext[len(ext)-1]]
  39         if code == "" {
  40                 code = defaultCreator
  41         }
  42
  43         return code
  44 }
  45
  46 func getFileNameList(filePath string) ([]Field, error) {
  47         var fields []Field
  48
  49         files, err := ioutil.ReadDir(filePath)
  50         if err != nil {
  51                 return fields, nil
  52         }
  53
  54         for _, file := range files {
  55                 var fileType string
  56                 var fileCreator []byte
  57                 var fileSize uint32
  58                 if !file.IsDir() {
  59                         fileType = fileTypeFromFilename(file.Name())
  60                         fileCreator = []byte(fileCreatorFromFilename(file.Name()))
  61                         fileSize = uint32(file.Size())
  62                 } else {
  63                         fileType = "fldr"
  64                         fileCreator = make([]byte, 4)
  65
  66                         dir, err := ioutil.ReadDir(filePath + "/" + file.Name())
  67                         if err != nil {
  68                                 return fields, err
  69                         }
  70                         fileSize = uint32(len(dir))
  71                 }
  72
  73                 fields = append(fields, NewField(
  74                         fieldFileNameWithInfo,
  75                         FileNameWithInfo{
  76                                 Type:       fileType,
  77                                 Creator:    fileCreator,
  78                                 FileSize:   fileSize,
  79                                 NameScript: []byte{0, 0},
  80                                 Name:       file.Name(),
  81                         }.Payload(),
  82                 ))
  83         }
  84
  85         return fields, nil
  86 }
  87
  88 func CalcTotalSize(filePath string) ([]byte, error) {
  89         var totalSize uint32
  90         err := filepath.Walk(filePath, func(path string, info os.FileInfo, err error) error {
  91                 if err != nil {
  92                         return err
  93                 }
  94
  95                 if info.IsDir() {
  96                         return nil
  97                 }
  98
  99                 totalSize += uint32(info.Size())
 100
 101                 return nil
 102         })
 103         if err != nil {
 104                 return nil, err
 105         }
 106
 107         bs := make([]byte, 4)
 108         binary.BigEndian.PutUint32(bs, totalSize)
 109
 110         return bs, nil
 111 }
 112
 113 func CalcItemCount(filePath string) ([]byte, error) {
 114         var itemcount uint16
 115         err := filepath.Walk(filePath, func(path string, info os.FileInfo, err error) error {
 116                 itemcount += 1
 117
 118                 if err != nil {
 119                         return err
 120                 }
 121
 122                 return nil
 123         })
 124         if err != nil {
 125                 return nil, err
 126         }
 127
 128         bs := make([]byte, 2)
 129         binary.BigEndian.PutUint16(bs, itemcount-1)
 130
 131         return bs, nil
 132 }
 133
 134 func EncodeFilePath(filePath string) []byte {
 135         pathSections := strings.Split(filePath, "/")
 136         pathItemCount := make([]byte, 2)
 137         binary.BigEndian.PutUint16(pathItemCount, uint16(len(pathSections)))
 138
 139         bytes := pathItemCount
 140
 141         for _, section := range pathSections {
 142                 bytes = append(bytes, []byte{0, 0}...)
 143
 144                 pathStr := []byte(section)
 145                 bytes = append(bytes, byte(len(pathStr)))
 146                 bytes = append(bytes, pathStr...)
 147         }
 148
 149         return bytes
 150 }
 151
 152 func ReadFilePath(filePathFieldData []byte) string {
 153         fp := NewFilePath(filePathFieldData)
 154         return fp.String()
 155 }