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option.go
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option.go
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package base64Kit
import "encoding/base64"
type (
base64Options struct {
encoding *base64.Encoding
padding *rune
}
Base64Option func(opts *base64Options)
)
func loadOptions(options ...Base64Option) *base64Options {
opts := &base64Options{
encoding: nil,
padding: nil,
}
for _, option := range options {
option(opts)
}
if opts.encoding == nil {
opts.encoding = base64.StdEncoding
}
if opts.padding != nil {
opts.encoding = opts.encoding.WithPadding(*opts.padding)
}
return opts
}
// WithEncoding
/*
@param encoding base64.StdEncoding || base64.URLEncoding || base64.RawStdEncoding || base64.RawURLEncoding
*/
func WithEncoding(encoding *base64.Encoding) Base64Option {
return func(opts *base64Options) {
opts.encoding = encoding
}
}
// WithPadding
/*
PS:
(1) base64.StdEncoding 和 base64.URLEncoding 的padding: '='(61)
(2) base64.RawStdEncoding 和 base64.RawURLEncoding 的padding: -1(base64.NoPadding)
*/
func WithPadding(padding *rune) Base64Option {
return func(opts *base64Options) {
opts.padding = padding
}
}