zephinzer/dev

package filesystem

import (
    "fmt"
    "io/ioutil"
    "os"
)

// EnsureDirectoryExists ensures that a directory exists at
// :pathToDirectory, returning an error only if a directory
// cannot be ensured to exist there
func EnsureDirectoryExists(pathToDirectory string) error {
    if mkdirError := os.MkdirAll(pathToDirectory, os.ModePerm); mkdirError != nil {
        return fmt.Errorf("failed to ensure directory exists at '%s': %s", pathToDirectory, mkdirError)
    }
    return nil
}

// IsDirectoryEmpty returns whether the provided directory located
// at :pathToDirectory is empty or not. If the error return is not
// nil, this indicates a system-type error
func IsDirectoryEmpty(pathToDirectory string) (bool, error) {
    directoryListing, readdirError := ioutil.ReadDir(pathToDirectory)
    if readdirError != nil {
        return false, fmt.Errorf("failed to read directory at %s", pathToDirectory)
    }
    if len(directoryListing) > 0 {
        listOfFiles := []string{}
        for _, file := range directoryListing {
            listOfFiles = append(listOfFiles, file.Name())
        }
        return false, nil
    }
    return true, nil
}