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43 lines
913 B
Go
43 lines
913 B
Go
// Copyright 2019 The Gorilla WebSocket Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package websocket
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import (
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"io"
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"strings"
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)
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// JoinMessages concatenates received messages to create a single io.Reader.
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// The string term is appended to each message. The returned reader does not
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// support concurrent calls to the Read method.
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func JoinMessages(c *Conn, term string) io.Reader {
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return &joinReader{c: c, term: term}
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}
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type joinReader struct {
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c *Conn
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term string
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r io.Reader
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}
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func (r *joinReader) Read(p []byte) (int, error) {
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if r.r == nil {
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var err error
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_, r.r, err = r.c.NextReader()
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if err != nil {
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return 0, err
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}
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if r.term != "" {
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r.r = io.MultiReader(r.r, strings.NewReader(r.term))
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}
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}
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n, err := r.r.Read(p)
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if err == io.EOF {
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err = nil
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r.r = nil
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}
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return n, err
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}
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