1 files changed, 0 insertions, 349 deletions
diff --git a/src/pkg/mime/multipart/multipart.go b/src/pkg/mime/multipart/multipart.go
deleted file mode 100644
index 7382efab9..000000000
--- a/src/pkg/mime/multipart/multipart.go
+++ /dev/null
@@ -1,349 +0,0 @@
-// 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.
-//
-
-/*
-Package multipart implements MIME multipart parsing, as defined in RFC
-2046.
-
-The implementation is sufficient for HTTP (RFC 2388) and the multipart
-bodies generated by popular browsers.
-*/
-package multipart
-
-import (
-	"bufio"
-	"bytes"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"mime"
-	"net/textproto"
-)
-
-var emptyParams = make(map[string]string)
-
-// A Part represents a single part in a multipart body.
-type Part struct {
-	// The headers of the body, if any, with the keys canonicalized
-	// in the same fashion that the Go http.Request headers are.
-	// For example, "foo-bar" changes case to "Foo-Bar"
-	//
-	// As a special case, if the "Content-Transfer-Encoding" header
-	// has a value of "quoted-printable", that header is instead
-	// hidden from this map and the body is transparently decoded
-	// during Read calls.
-	Header textproto.MIMEHeader
-
-	buffer    *bytes.Buffer
-	mr        *Reader
-	bytesRead int
-
-	disposition       string
-	dispositionParams map[string]string
-
-	// r is either a reader directly reading from mr, or it's a
-	// wrapper around such a reader, decoding the
-	// Content-Transfer-Encoding
-	r io.Reader
-}
-
-// FormName returns the name parameter if p has a Content-Disposition
-// of type "form-data".  Otherwise it returns the empty string.
-func (p *Part) FormName() string {
-	// See http://tools.ietf.org/html/rfc2183 section 2 for EBNF
-	// of Content-Disposition value format.
-	if p.dispositionParams == nil {
-		p.parseContentDisposition()
-	}
-	if p.disposition != "form-data" {
-		return ""
-	}
-	return p.dispositionParams["name"]
-}
-
-// FileName returns the filename parameter of the Part's
-// Content-Disposition header.
-func (p *Part) FileName() string {
-	if p.dispositionParams == nil {
-		p.parseContentDisposition()
-	}
-	return p.dispositionParams["filename"]
-}
-
-func (p *Part) parseContentDisposition() {
-	v := p.Header.Get("Content-Disposition")
-	var err error
-	p.disposition, p.dispositionParams, err = mime.ParseMediaType(v)
-	if err != nil {
-		p.dispositionParams = emptyParams
-	}
-}
-
-// NewReader creates a new multipart Reader reading from r using the
-// given MIME boundary.
-//
-// The boundary is usually obtained from the "boundary" parameter of
-// the message's "Content-Type" header. Use mime.ParseMediaType to
-// parse such headers.
-func NewReader(r io.Reader, boundary string) *Reader {
-	b := []byte("\r\n--" + boundary + "--")
-	return &Reader{
-		bufReader: bufio.NewReader(r),
-
-		nl:               b[:2],
-		nlDashBoundary:   b[:len(b)-2],
-		dashBoundaryDash: b[2:],
-		dashBoundary:     b[2 : len(b)-2],
-	}
-}
-
-func newPart(mr *Reader) (*Part, error) {
-	bp := &Part{
-		Header: make(map[string][]string),
-		mr:     mr,
-		buffer: new(bytes.Buffer),
-	}
-	if err := bp.populateHeaders(); err != nil {
-		return nil, err
-	}
-	bp.r = partReader{bp}
-	const cte = "Content-Transfer-Encoding"
-	if bp.Header.Get(cte) == "quoted-printable" {
-		bp.Header.Del(cte)
-		bp.r = newQuotedPrintableReader(bp.r)
-	}
-	return bp, nil
-}
-
-func (bp *Part) populateHeaders() error {
-	r := textproto.NewReader(bp.mr.bufReader)
-	header, err := r.ReadMIMEHeader()
-	if err == nil {
-		bp.Header = header
-	}
-	return err
-}
-
-// Read reads the body of a part, after its headers and before the
-// next part (if any) begins.
-func (p *Part) Read(d []byte) (n int, err error) {
-	return p.r.Read(d)
-}
-
-// partReader implements io.Reader by reading raw bytes directly from the
-// wrapped *Part, without doing any Transfer-Encoding decoding.
-type partReader struct {
-	p *Part
-}
-
-func (pr partReader) Read(d []byte) (n int, err error) {
-	p := pr.p
-	defer func() {
-		p.bytesRead += n
-	}()
-	if p.buffer.Len() >= len(d) {
-		// Internal buffer of unconsumed data is large enough for
-		// the read request.  No need to parse more at the moment.
-		return p.buffer.Read(d)
-	}
-	peek, err := p.mr.bufReader.Peek(4096) // TODO(bradfitz): add buffer size accessor
-
-	// Look for an immediate empty part without a leading \r\n
-	// before the boundary separator.  Some MIME code makes empty
-	// parts like this. Most browsers, however, write the \r\n
-	// before the subsequent boundary even for empty parts and
-	// won't hit this path.
-	if p.bytesRead == 0 && p.mr.peekBufferIsEmptyPart(peek) {
-		return 0, io.EOF
-	}
-	unexpectedEOF := err == io.EOF
-	if err != nil && !unexpectedEOF {
-		return 0, fmt.Errorf("multipart: Part Read: %v", err)
-	}
-	if peek == nil {
-		panic("nil peek buf")
-	}
-
-	// Search the peek buffer for "\r\n--boundary". If found,
-	// consume everything up to the boundary. If not, consume only
-	// as much of the peek buffer as cannot hold the boundary
-	// string.
-	nCopy := 0
-	foundBoundary := false
-	if idx := bytes.Index(peek, p.mr.nlDashBoundary); idx != -1 {
-		nCopy = idx
-		foundBoundary = true
-	} else if safeCount := len(peek) - len(p.mr.nlDashBoundary); safeCount > 0 {
-		nCopy = safeCount
-	} else if unexpectedEOF {
-		// If we've run out of peek buffer and the boundary
-		// wasn't found (and can't possibly fit), we must have
-		// hit the end of the file unexpectedly.
-		return 0, io.ErrUnexpectedEOF
-	}
-	if nCopy > 0 {
-		if _, err := io.CopyN(p.buffer, p.mr.bufReader, int64(nCopy)); err != nil {
-			return 0, err
-		}
-	}
-	n, err = p.buffer.Read(d)
-	if err == io.EOF && !foundBoundary {
-		// If the boundary hasn't been reached there's more to
-		// read, so don't pass through an EOF from the buffer
-		err = nil
-	}
-	return
-}
-
-func (p *Part) Close() error {
-	io.Copy(ioutil.Discard, p)
-	return nil
-}
-
-// Reader is an iterator over parts in a MIME multipart body.
-// Reader's underlying parser consumes its input as needed.  Seeking
-// isn't supported.
-type Reader struct {
-	bufReader *bufio.Reader
-
-	currentPart *Part
-	partsRead   int
-
-	nl               []byte // "\r\n" or "\n" (set after seeing first boundary line)
-	nlDashBoundary   []byte // nl + "--boundary"
-	dashBoundaryDash []byte // "--boundary--"
-	dashBoundary     []byte // "--boundary"
-}
-
-// NextPart returns the next part in the multipart or an error.
-// When there are no more parts, the error io.EOF is returned.
-func (r *Reader) NextPart() (*Part, error) {
-	if r.currentPart != nil {
-		r.currentPart.Close()
-	}
-
-	expectNewPart := false
-	for {
-		line, err := r.bufReader.ReadSlice('\n')
-		if err == io.EOF && r.isFinalBoundary(line) {
-			// If the buffer ends in "--boundary--" without the
-			// trailing "\r\n", ReadSlice will return an error
-			// (since it's missing the '\n'), but this is a valid
-			// multipart EOF so we need to return io.EOF instead of
-			// a fmt-wrapped one.
-			return nil, io.EOF
-		}
-		if err != nil {
-			return nil, fmt.Errorf("multipart: NextPart: %v", err)
-		}
-
-		if r.isBoundaryDelimiterLine(line) {
-			r.partsRead++
-			bp, err := newPart(r)
-			if err != nil {
-				return nil, err
-			}
-			r.currentPart = bp
-			return bp, nil
-		}
-
-		if r.isFinalBoundary(line) {
-			// Expected EOF
-			return nil, io.EOF
-		}
-
-		if expectNewPart {
-			return nil, fmt.Errorf("multipart: expecting a new Part; got line %q", string(line))
-		}
-
-		if r.partsRead == 0 {
-			// skip line
-			continue
-		}
-
-		// Consume the "\n" or "\r\n" separator between the
-		// body of the previous part and the boundary line we
-		// now expect will follow. (either a new part or the
-		// end boundary)
-		if bytes.Equal(line, r.nl) {
-			expectNewPart = true
-			continue
-		}
-
-		return nil, fmt.Errorf("multipart: unexpected line in Next(): %q", line)
-	}
-}
-
-// isFinalBoundary reports whether line is the final boundary line
-// indicating that all parts are over.
-// It matches `^--boundary--[ \t]*(\r\n)?$`
-func (mr *Reader) isFinalBoundary(line []byte) bool {
-	if !bytes.HasPrefix(line, mr.dashBoundaryDash) {
-		return false
-	}
-	rest := line[len(mr.dashBoundaryDash):]
-	rest = skipLWSPChar(rest)
-	return len(rest) == 0 || bytes.Equal(rest, mr.nl)
-}
-
-func (mr *Reader) isBoundaryDelimiterLine(line []byte) (ret bool) {
-	// http://tools.ietf.org/html/rfc2046#section-5.1
-	//   The boundary delimiter line is then defined as a line
-	//   consisting entirely of two hyphen characters ("-",
-	//   decimal value 45) followed by the boundary parameter
-	//   value from the Content-Type header field, optional linear
-	//   whitespace, and a terminating CRLF.
-	if !bytes.HasPrefix(line, mr.dashBoundary) {
-		return false
-	}
-	rest := line[len(mr.dashBoundary):]
-	rest = skipLWSPChar(rest)
-
-	// On the first part, see our lines are ending in \n instead of \r\n
-	// and switch into that mode if so.  This is a violation of the spec,
-	// but occurs in practice.
-	if mr.partsRead == 0 && len(rest) == 1 && rest[0] == '\n' {
-		mr.nl = mr.nl[1:]
-		mr.nlDashBoundary = mr.nlDashBoundary[1:]
-	}
-	return bytes.Equal(rest, mr.nl)
-}
-
-// peekBufferIsEmptyPart reports whether the provided peek-ahead
-// buffer represents an empty part. It is called only if we've not
-// already read any bytes in this part and checks for the case of MIME
-// software not writing the \r\n on empty parts. Some does, some
-// doesn't.
-//
-// This checks that what follows the "--boundary" is actually the end
-// ("--boundary--" with optional whitespace) or optional whitespace
-// and then a newline, so we don't catch "--boundaryFAKE", in which
-// case the whole line is part of the data.
-func (mr *Reader) peekBufferIsEmptyPart(peek []byte) bool {
-	// End of parts case.
-	// Test whether peek matches `^--boundary--[ \t]*(?:\r\n|$)`
-	if bytes.HasPrefix(peek, mr.dashBoundaryDash) {
-		rest := peek[len(mr.dashBoundaryDash):]
-		rest = skipLWSPChar(rest)
-		return bytes.HasPrefix(rest, mr.nl) || len(rest) == 0
-	}
-	if !bytes.HasPrefix(peek, mr.dashBoundary) {
-		return false
-	}
-	// Test whether rest matches `^[ \t]*\r\n`)
-	rest := peek[len(mr.dashBoundary):]
-	rest = skipLWSPChar(rest)
-	return bytes.HasPrefix(rest, mr.nl)
-}
-
-// skipLWSPChar returns b with leading spaces and tabs removed.
-// RFC 822 defines:
-//    LWSP-char = SPACE / HTAB
-func skipLWSPChar(b []byte) []byte {
-	for len(b) > 0 && (b[0] == ' ' || b[0] == '\t') {
-		b = b[1:]
-	}
-	return b
-}