1 files changed, 122 insertions, 0 deletions
diff --git a/libgo/go/net/textproto/textproto.go b/libgo/go/net/textproto/textproto.go
new file mode 100644
index 0000000000..f62009c523
--- /dev/null
+++ b/libgo/go/net/textproto/textproto.go
@@ -0,0 +1,122 @@
+// Copyright 2010 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.
+
+// The textproto package implements generic support for
+// text-based request/response protocols in the style of
+// HTTP, NNTP, and SMTP.
+//
+// The package provides:
+//
+// Error, which represents a numeric error response from
+// a server.
+//
+// Pipeline, to manage pipelined requests and responses
+// in a client.
+//
+// Reader, to read numeric response code lines,
+// key: value headers, lines wrapped with leading spaces
+// on continuation lines, and whole text blocks ending
+// with a dot on a line by itself.
+//
+// Writer, to write dot-encoded text blocks.
+//
+package textproto
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"net"
+	"os"
+)
+
+// An Error represents a numeric error response from a server.
+type Error struct {
+	Code int
+	Msg  string
+}
+
+func (e *Error) String() string {
+	return fmt.Sprintf("%03d %s", e.Code, e.Msg)
+}
+
+// A ProtocolError describes a protocol violation such
+// as an invalid response or a hung-up connection.
+type ProtocolError string
+
+func (p ProtocolError) String() string {
+	return string(p)
+}
+
+// A Conn represents a textual network protocol connection.
+// It consists of a Reader and Writer to manage I/O
+// and a Pipeline to sequence concurrent requests on the connection.
+// These embedded types carry methods with them;
+// see the documentation of those types for details.
+type Conn struct {
+	Reader
+	Writer
+	Pipeline
+	conn io.ReadWriteCloser
+}
+
+// NewConn returns a new Conn using conn for I/O.
+func NewConn(conn io.ReadWriteCloser) *Conn {
+	return &Conn{
+		Reader: Reader{R: bufio.NewReader(conn)},
+		Writer: Writer{W: bufio.NewWriter(conn)},
+		conn:   conn,
+	}
+}
+
+// Close closes the connection.
+func (c *Conn) Close() os.Error {
+	return c.conn.Close()
+}
+
+// Dial connects to the given address on the given network using net.Dial
+// and then returns a new Conn for the connection.
+func Dial(network, addr string) (*Conn, os.Error) {
+	c, err := net.Dial(network, "", addr)
+	if err != nil {
+		return nil, err
+	}
+	return NewConn(c), nil
+}
+
+// Cmd is a convenience method that sends a command after
+// waiting its turn in the pipeline.  The command text is the
+// result of formatting format with args and appending \r\n.
+// Cmd returns the id of the command, for use with StartResponse and EndResponse.
+//
+// For example, a client might run a HELP command that returns a dot-body
+// by using:
+//
+//	id, err := c.Cmd("HELP")
+//	if err != nil {
+//		return nil, err
+//	}
+//
+//	c.StartResponse(id)
+//	defer c.EndResponse(id)
+//
+//	if _, _, err = c.ReadCodeLine(110); err != nil {
+//		return nil, err
+//	}
+//	text, err := c.ReadDotAll()
+//	if err != nil {
+//		return nil, err
+//	}
+//	return c.ReadCodeLine(250)
+//
+func (c *Conn) Cmd(format string, args ...interface{}) (id uint, err os.Error) {
+	id = c.Next()
+	c.StartRequest(id)
+	err = c.PrintfLine(format, args...)
+	c.EndRequest(id)
+	if err != nil {
+		return 0, err
+	}
+	return id, nil
+}