jdel/gosspks

package util // import jdel.org/gosspks/util

import (
    "os"
    "runtime"

    log "github.com/sirupsen/logrus"
)

var loggerFS = log.WithFields(log.Fields{
    "module": WhereAmI(),
})

// FileInfoBySizeDesc implementats a sort
// by size on os.FileInfo
type FileInfoBySizeDesc []os.FileInfo

func (s FileInfoBySizeDesc) Len() int {
    return len(s)
}
func (s FileInfoBySizeDesc) Swap(i, j int) {
    s[i], s[j] = s[j], s[i]
}
func (s FileInfoBySizeDesc) Less(i, j int) bool {
    return s[i].Size() > s[j].Size()
}

// WhereAmI returns the current source file name 
func WhereAmI() string {
    _, filename, _, _ := runtime.Caller(1)
    return filename
}

// CreateDir Creates a directory if it doesn't exist
func CreateDir(dir string) error {
    var err error
    if !FileExists(dir) {
        loggerFS.Debug("Creating directory: ", dir)
        err = os.MkdirAll(dir, 0755)
    }
    return err
}

// FileExists returns true if the dir exists on filesystem
func FileExists(file string) bool {
    if _, err := os.Stat(file); os.IsNotExist(err) {
        return false
    }
    return true
}