]> git.r.bdr.sh - rbdr/mobius/blobdiff - hotline/files.go
Convert bespoke methods to io.Reader/io.Writer interfaces
[rbdr/mobius] / hotline / files.go
index 4f55eba13f29946a2cec4feed35040271e4276f2..d4bea538258dc2ebc362b455bb48e27bd02952fa 100644 (file)
@@ -3,33 +3,24 @@ package hotline
 import (
        "encoding/binary"
        "errors"
+       "io"
        "io/fs"
-       "io/ioutil"
        "os"
        "path/filepath"
+       "regexp"
        "strings"
 )
 
-const incompleteFileSuffix = ".incomplete"
-
-func downcaseFileExtension(filename string) string {
-       splitStr := strings.Split(filename, ".")
-       ext := strings.ToLower(
-               splitStr[len(splitStr)-1],
-       )
-
-       return ext
-}
-
-func fileTypeFromFilename(fn string) fileType {
-       ft, ok := fileTypes[downcaseFileExtension(fn)]
+func fileTypeFromFilename(filename string) fileType {
+       fileExt := strings.ToLower(filepath.Ext(filename))
+       ft, ok := fileTypes[fileExt]
        if ok {
                return ft
        }
        return defaultFileType
 }
 
-func fileTypeFromInfo(info os.FileInfo) (ft fileType, err error) {
+func fileTypeFromInfo(info fs.FileInfo) (ft fileType, err error) {
        if info.IsDir() {
                ft.CreatorCode = "n/a "
                ft.TypeCode = "fldr"
@@ -40,8 +31,10 @@ func fileTypeFromInfo(info os.FileInfo) (ft fileType, err error) {
        return ft, nil
 }
 
-func getFileNameList(filePath string) (fields []Field, err error) {
-       files, err := ioutil.ReadDir(filePath)
+const maxFileSize = 4294967296
+
+func getFileNameList(path string, ignoreList []string) (fields []Field, err error) {
+       files, err := os.ReadDir(path)
        if err != nil {
                return fields, nil
        }
@@ -49,15 +42,25 @@ func getFileNameList(filePath string) (fields []Field, err error) {
        for _, file := range files {
                var fnwi FileNameWithInfo
 
+               if ignoreFile(file.Name(), ignoreList) {
+                       continue
+               }
+
                fileCreator := make([]byte, 4)
 
-               if file.Mode()&os.ModeSymlink != 0 {
-                       resolvedPath, err := os.Readlink(filePath + "/" + file.Name())
+               fileInfo, err := file.Info()
+               if err != nil {
+                       return fields, err
+               }
+
+               // Check if path is a symlink.  If so, follow it.
+               if fileInfo.Mode()&os.ModeSymlink != 0 {
+                       resolvedPath, err := os.Readlink(filepath.Join(path, file.Name()))
                        if err != nil {
                                return fields, err
                        }
 
-                       rFile, err := os.Stat(filePath + "/" + resolvedPath)
+                       rFile, err := os.Stat(resolvedPath)
                        if errors.Is(err, os.ErrNotExist) {
                                continue
                        }
@@ -66,50 +69,75 @@ func getFileNameList(filePath string) (fields []Field, err error) {
                        }
 
                        if rFile.IsDir() {
-                               dir, err := ioutil.ReadDir(filePath + "/" + file.Name())
+                               dir, err := os.ReadDir(filepath.Join(path, file.Name()))
                                if err != nil {
                                        return fields, err
                                }
-                               binary.BigEndian.PutUint32(fnwi.FileSize[:], uint32(len(dir)))
-                               copy(fnwi.Type[:], []byte("fldr")[:])
-                               copy(fnwi.Creator[:], fileCreator[:])
+
+                               var c uint32
+                               for _, f := range dir {
+                                       if !ignoreFile(f.Name(), ignoreList) {
+                                               c += 1
+                                       }
+                               }
+
+                               binary.BigEndian.PutUint32(fnwi.FileSize[:], c)
+                               copy(fnwi.Type[:], "fldr")
+                               copy(fnwi.Creator[:], fileCreator)
                        } else {
                                binary.BigEndian.PutUint32(fnwi.FileSize[:], uint32(rFile.Size()))
-                               copy(fnwi.Type[:], []byte(fileTypeFromFilename(rFile.Name()).TypeCode)[:])
-                               copy(fnwi.Creator[:], []byte(fileTypeFromFilename(rFile.Name()).CreatorCode)[:])
+                               copy(fnwi.Type[:], fileTypeFromFilename(rFile.Name()).TypeCode)
+                               copy(fnwi.Creator[:], fileTypeFromFilename(rFile.Name()).CreatorCode)
                        }
-
                } else if file.IsDir() {
-                       dir, err := ioutil.ReadDir(filePath + "/" + file.Name())
+                       dir, err := os.ReadDir(filepath.Join(path, file.Name()))
                        if err != nil {
                                return fields, err
                        }
-                       binary.BigEndian.PutUint32(fnwi.FileSize[:], uint32(len(dir)))
-                       copy(fnwi.Type[:], []byte("fldr")[:])
-                       copy(fnwi.Creator[:], fileCreator[:])
+
+                       var c uint32
+                       for _, f := range dir {
+                               if !ignoreFile(f.Name(), ignoreList) {
+                                       c += 1
+                               }
+                       }
+
+                       binary.BigEndian.PutUint32(fnwi.FileSize[:], c)
+                       copy(fnwi.Type[:], "fldr")
+                       copy(fnwi.Creator[:], fileCreator)
                } else {
                        // the Hotline protocol does not support file sizes > 4GiB due to the 4 byte field size, so skip them
-                       if file.Size() > 4294967296 {
+                       if fileInfo.Size() > maxFileSize {
                                continue
                        }
-                       binary.BigEndian.PutUint32(fnwi.FileSize[:], uint32(file.Size()))
-                       copy(fnwi.Type[:], []byte(fileTypeFromFilename(file.Name()).TypeCode)[:])
-                       copy(fnwi.Creator[:], []byte(fileTypeFromFilename(file.Name()).CreatorCode)[:])
+
+                       hlFile, err := newFileWrapper(&OSFileStore{}, path+"/"+file.Name(), 0)
+                       if err != nil {
+                               return nil, err
+                       }
+
+                       copy(fnwi.FileSize[:], hlFile.totalSize())
+                       copy(fnwi.Type[:], hlFile.ffo.FlatFileInformationFork.TypeSignature)
+                       copy(fnwi.Creator[:], hlFile.ffo.FlatFileInformationFork.CreatorSignature)
                }
 
-               strippedName := strings.Replace(file.Name(), ".incomplete", "", -1)
+               strippedName := strings.ReplaceAll(file.Name(), ".incomplete", "")
+               strippedName, err = txtEncoder.String(strippedName)
+               if err != nil {
+                       continue
+               }
 
                nameSize := make([]byte, 2)
                binary.BigEndian.PutUint16(nameSize, uint16(len(strippedName)))
-               copy(fnwi.NameSize[:], nameSize[:])
+               copy(fnwi.NameSize[:], nameSize)
 
                fnwi.name = []byte(strippedName)
 
-               b, err := fnwi.MarshalBinary()
+               b, err := io.ReadAll(&fnwi)
                if err != nil {
                        return nil, err
                }
-               fields = append(fields, NewField(fieldFileNameWithInfo, b))
+               fields = append(fields, NewField(FieldFileNameWithInfo, b))
        }
 
        return fields, nil
@@ -143,12 +171,14 @@ func CalcTotalSize(filePath string) ([]byte, error) {
 func CalcItemCount(filePath string) ([]byte, error) {
        var itemcount uint16
        err := filepath.Walk(filePath, func(path string, info os.FileInfo, err error) error {
-               itemcount += 1
-
                if err != nil {
                        return err
                }
 
+               if !strings.HasPrefix(info.Name(), ".") {
+                       itemcount += 1
+               }
+
                return nil
        })
        if err != nil {
@@ -179,18 +209,13 @@ func EncodeFilePath(filePath string) []byte {
        return bytes
 }
 
-// effectiveFile wraps os.Open to check for the presence of a partial file transfer as a fallback
-func effectiveFile(filePath string) (*os.File, error) {
-       file, err := os.Open(filePath)
-       if err != nil && !errors.Is(err, fs.ErrNotExist) {
-               return nil, err
-       }
-
-       if errors.Is(err, fs.ErrNotExist) {
-               file, err = os.OpenFile(filePath+incompleteFileSuffix, os.O_APPEND|os.O_WRONLY, 0644)
-               if err != nil {
-                       return nil, err
+func ignoreFile(fileName string, ignoreList []string) bool {
+       // skip files that match any regular expression present in the IgnoreFiles list
+       matchIgnoreFilter := 0
+       for _, pattern := range ignoreList {
+               if match, _ := regexp.MatchString(pattern, fileName); match {
+                       matchIgnoreFilter += 1
                }
        }
-       return file, nil
+       return matchIgnoreFilter > 0
 }