common

func Asset ¶

func Asset(name string) ([]byte, error)

Asset loads and returns the asset for the given name. It returns an error if the asset could not be found or could not be loaded.

func AssetDir ¶

func AssetDir(name string) ([]string, error)

AssetDir returns the file names below a certain directory embedded in the file by go-bindata. For example if you run go-bindata on data/... and data contains the following hierarchy:

data/
  foo.txt
  img/
    a.png
    b.png

then AssetDir("data") would return []string{"foo.txt", "img"} AssetDir("data/img") would return []string{"a.png", "b.png"} AssetDir("foo.txt") and AssetDir("notexist") would return an error AssetDir("") will return []string{"data"}.

func AssetNames ¶

func AssetNames() []string

AssetNames returns the names of the assets.

func Exists ¶

func Exists(path string) bool

func GbkToUtf8 ¶

func GbkToUtf8(s []byte) ([]byte, error)

func IsDir ¶

func IsDir(path string) bool

func NewRandStr ¶

func NewRandStr(length int) string

func OpenImage ¶

func OpenImage(qrPath, qrcodeShowType string)

func Rand ¶

func Rand(min, max int) int

func RandomNumber ¶

func RandomNumber(len int) string

指定位数随机数

func Substr ¶

func Substr(s string, start, end int) string

func Utf8ToGbk ¶

func Utf8ToGbk(s []byte) ([]byte, error)