| // Copyright 2015 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| // Package internal contains code that is shared among encoding implementations. |
| package internal |
| |
| import ( |
| "golang.org/x/text/encoding" |
| "golang.org/x/text/encoding/internal/identifier" |
| "golang.org/x/text/transform" |
| ) |
| |
| // Encoding is an implementation of the Encoding interface that adds the String |
| // and ID methods to an existing encoding. |
| type Encoding struct { |
| encoding.Encoding |
| Name string |
| MIB identifier.MIB |
| } |
| |
| // _ verifies that Encoding implements identifier.Interface. |
| var _ identifier.Interface = (*Encoding)(nil) |
| |
| func (e *Encoding) String() string { |
| return e.Name |
| } |
| |
| func (e *Encoding) ID() (mib identifier.MIB, other string) { |
| return e.MIB, "" |
| } |
| |
| // SimpleEncoding is an Encoding that combines two Transformers. |
| type SimpleEncoding struct { |
| Decoder transform.Transformer |
| Encoder transform.Transformer |
| } |
| |
| func (e *SimpleEncoding) NewDecoder() *encoding.Decoder { |
| return &encoding.Decoder{Transformer: e.Decoder} |
| } |
| |
| func (e *SimpleEncoding) NewEncoder() *encoding.Encoder { |
| return &encoding.Encoder{Transformer: e.Encoder} |
| } |
| |
| // FuncEncoding is an Encoding that combines two functions returning a new |
| // Transformer. |
| type FuncEncoding struct { |
| Decoder func() transform.Transformer |
| Encoder func() transform.Transformer |
| } |
| |
| func (e FuncEncoding) NewDecoder() *encoding.Decoder { |
| return &encoding.Decoder{Transformer: e.Decoder()} |
| } |
| |
| func (e FuncEncoding) NewEncoder() *encoding.Encoder { |
| return &encoding.Encoder{Transformer: e.Encoder()} |
| } |
| |
| // A RepertoireError indicates a rune is not in the repertoire of a destination |
| // encoding. It is associated with an encoding-specific suggested replacement |
| // byte. |
| type RepertoireError byte |
| |
| // Error implements the error interrface. |
| func (r RepertoireError) Error() string { |
| return "encoding: rune not supported by encoding." |
| } |
| |
| // Replacement returns the replacement string associated with this error. |
| func (r RepertoireError) Replacement() byte { return byte(r) } |
| |
| var ErrASCIIReplacement = RepertoireError(encoding.ASCIISub) |