libmutton/synccommon/walkUNIX.go

//go:build !windows

package synccommon

import (
	"errors"
	"io/fs"
	"os"
	"path/filepath"

	"github.com/rwinkhart/libmutton/global"
)

// WalkEntryDir walks the entry directory and returns lists of all files and directories found (two separate lists).
// Regardless of platform, all paths are stored with forward slashes (UNIX-style).
func WalkEntryDir() ([]string, []string, error) {
	// define file/directory containing slices so that they may be accessed by the anonymous WalkDir function
	var fileList []string
	var dirList []string

	// walk entry directory
	err := filepath.WalkDir(global.EntryRoot,
		func(fullPath string, entry fs.DirEntry, err error) error {

			// check for errors encountered while walking directory
			if err != nil {
				if os.IsNotExist(err) {
					return errors.New("entry directory does not exist; initialize libmutton to create it")
				} else {
					return errors.New("an unexpected error occurred while generating the entry list: " + err.Error())
				}
			}

			// trim root path from each path before storing
			trimmedPath := fullPath[RootLength:]

			// append the path to the appropriate slice
			if !entry.IsDir() {
				fileList = append(fileList, trimmedPath)
			} else {
				dirList = append(dirList, trimmedPath)
			}

			return nil
		})
	if err != nil {
		return nil, nil, err
	}
	return fileList, dirList, nil
}