corvus-ch/horcrux

package format
 
import (
    "fmt"
    "io"
 
    "github.com/corvus-ch/horcrux/format/base64"
    "github.com/corvus-ch/horcrux/format/qr"
    "github.com/corvus-ch/horcrux/format/raw"
    "github.com/corvus-ch/horcrux/format/text"
    "github.com/corvus-ch/horcrux/format/zbase32"
    "github.com/corvus-ch/horcrux/input"
)
 
// Default holds the name of the default format.
const Default = text.Name
 
// Format describes the interface for the various input/output formats.
type Format interface {
    // OutputFileName returns the file name for the given x.
    OutputFileName(x byte) string
 
    // Writer creates a new format writer for the part identified by x
    Writer(x byte) (io.Writer, []io.Closer, error)
 
    // Reader creates a new format reader using the given reader as input.
    Reader(r io.Reader) (io.Reader, error)
 
    // Name returns the formats name.
    Name() string
}
 
// New creates a new format object.
func New(format string, input input.Input) (Format, error) {
    switch format {
    case raw.Name:
        return raw.New(input), nil
 
    case zbase32.Name:
        return zbase32.New(input), nil
 
    case base64.Name:
        return base64.New(input), nil
 
    case qr.Name:
        return qr.New(input), nil
 
    case text.Name:
        return text.New(input), nil
 
    default:
        return nil, fmt.Errorf("unknown format %s", format)
    }
}