Imported Upstream version 1.4upstream/1.4

1 files changed, 0 insertions, 305 deletions

diff --git a/src/pkg/archive/tar/common.go b/src/pkg/archive/tar/common.go
deleted file mode 100644
index e363aa793..000000000
--- a/src/pkg/archive/tar/common.go
+++ /dev/null
@@ -1,305 +0,0 @@
-// Copyright 2009 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 tar implements access to tar archives.
-// It aims to cover most of the variations, including those produced
-// by GNU and BSD tars.
-//
-// References:
-//   http://www.freebsd.org/cgi/man.cgi?query=tar&sektion=5
-//   http://www.gnu.org/software/tar/manual/html_node/Standard.html
-//   http://pubs.opengroup.org/onlinepubs/9699919799/utilities/pax.html
-package tar
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"os"
-	"path"
-	"time"
-)
-
-const (
-	blockSize = 512
-
-	// Types
-	TypeReg           = '0'    // regular file
-	TypeRegA          = '\x00' // regular file
-	TypeLink          = '1'    // hard link
-	TypeSymlink       = '2'    // symbolic link
-	TypeChar          = '3'    // character device node
-	TypeBlock         = '4'    // block device node
-	TypeDir           = '5'    // directory
-	TypeFifo          = '6'    // fifo node
-	TypeCont          = '7'    // reserved
-	TypeXHeader       = 'x'    // extended header
-	TypeXGlobalHeader = 'g'    // global extended header
-	TypeGNULongName   = 'L'    // Next file has a long name
-	TypeGNULongLink   = 'K'    // Next file symlinks to a file w/ a long name
-	TypeGNUSparse     = 'S'    // sparse file
-)
-
-// A Header represents a single header in a tar archive.
-// Some fields may not be populated.
-type Header struct {
-	Name       string    // name of header file entry
-	Mode       int64     // permission and mode bits
-	Uid        int       // user id of owner
-	Gid        int       // group id of owner
-	Size       int64     // length in bytes
-	ModTime    time.Time // modified time
-	Typeflag   byte      // type of header entry
-	Linkname   string    // target name of link
-	Uname      string    // user name of owner
-	Gname      string    // group name of owner
-	Devmajor   int64     // major number of character or block device
-	Devminor   int64     // minor number of character or block device
-	AccessTime time.Time // access time
-	ChangeTime time.Time // status change time
-	Xattrs     map[string]string
-}
-
-// File name constants from the tar spec.
-const (
-	fileNameSize       = 100 // Maximum number of bytes in a standard tar name.
-	fileNamePrefixSize = 155 // Maximum number of ustar extension bytes.
-)
-
-// FileInfo returns an os.FileInfo for the Header.
-func (h *Header) FileInfo() os.FileInfo {
-	return headerFileInfo{h}
-}
-
-// headerFileInfo implements os.FileInfo.
-type headerFileInfo struct {
-	h *Header
-}
-
-func (fi headerFileInfo) Size() int64        { return fi.h.Size }
-func (fi headerFileInfo) IsDir() bool        { return fi.Mode().IsDir() }
-func (fi headerFileInfo) ModTime() time.Time { return fi.h.ModTime }
-func (fi headerFileInfo) Sys() interface{}   { return fi.h }
-
-// Name returns the base name of the file.
-func (fi headerFileInfo) Name() string {
-	if fi.IsDir() {
-		return path.Base(path.Clean(fi.h.Name))
-	}
-	return path.Base(fi.h.Name)
-}
-
-// Mode returns the permission and mode bits for the headerFileInfo.
-func (fi headerFileInfo) Mode() (mode os.FileMode) {
-	// Set file permission bits.
-	mode = os.FileMode(fi.h.Mode).Perm()
-
-	// Set setuid, setgid and sticky bits.
-	if fi.h.Mode&c_ISUID != 0 {
-		// setuid
-		mode |= os.ModeSetuid
-	}
-	if fi.h.Mode&c_ISGID != 0 {
-		// setgid
-		mode |= os.ModeSetgid
-	}
-	if fi.h.Mode&c_ISVTX != 0 {
-		// sticky
-		mode |= os.ModeSticky
-	}
-
-	// Set file mode bits.
-	// clear perm, setuid, setgid and sticky bits.
-	m := os.FileMode(fi.h.Mode) &^ 07777
-	if m == c_ISDIR {
-		// directory
-		mode |= os.ModeDir
-	}
-	if m == c_ISFIFO {
-		// named pipe (FIFO)
-		mode |= os.ModeNamedPipe
-	}
-	if m == c_ISLNK {
-		// symbolic link
-		mode |= os.ModeSymlink
-	}
-	if m == c_ISBLK {
-		// device file
-		mode |= os.ModeDevice
-	}
-	if m == c_ISCHR {
-		// Unix character device
-		mode |= os.ModeDevice
-		mode |= os.ModeCharDevice
-	}
-	if m == c_ISSOCK {
-		// Unix domain socket
-		mode |= os.ModeSocket
-	}
-
-	switch fi.h.Typeflag {
-	case TypeLink, TypeSymlink:
-		// hard link, symbolic link
-		mode |= os.ModeSymlink
-	case TypeChar:
-		// character device node
-		mode |= os.ModeDevice
-		mode |= os.ModeCharDevice
-	case TypeBlock:
-		// block device node
-		mode |= os.ModeDevice
-	case TypeDir:
-		// directory
-		mode |= os.ModeDir
-	case TypeFifo:
-		// fifo node
-		mode |= os.ModeNamedPipe
-	}
-
-	return mode
-}
-
-// sysStat, if non-nil, populates h from system-dependent fields of fi.
-var sysStat func(fi os.FileInfo, h *Header) error
-
-// Mode constants from the tar spec.
-const (
-	c_ISUID  = 04000   // Set uid
-	c_ISGID  = 02000   // Set gid
-	c_ISVTX  = 01000   // Save text (sticky bit)
-	c_ISDIR  = 040000  // Directory
-	c_ISFIFO = 010000  // FIFO
-	c_ISREG  = 0100000 // Regular file
-	c_ISLNK  = 0120000 // Symbolic link
-	c_ISBLK  = 060000  // Block special file
-	c_ISCHR  = 020000  // Character special file
-	c_ISSOCK = 0140000 // Socket
-)
-
-// Keywords for the PAX Extended Header
-const (
-	paxAtime    = "atime"
-	paxCharset  = "charset"
-	paxComment  = "comment"
-	paxCtime    = "ctime" // please note that ctime is not a valid pax header.
-	paxGid      = "gid"
-	paxGname    = "gname"
-	paxLinkpath = "linkpath"
-	paxMtime    = "mtime"
-	paxPath     = "path"
-	paxSize     = "size"
-	paxUid      = "uid"
-	paxUname    = "uname"
-	paxXattr    = "SCHILY.xattr."
-	paxNone     = ""
-)
-
-// FileInfoHeader creates a partially-populated Header from fi.
-// If fi describes a symlink, FileInfoHeader records link as the link target.
-// If fi describes a directory, a slash is appended to the name.
-// Because os.FileInfo's Name method returns only the base name of
-// the file it describes, it may be necessary to modify the Name field
-// of the returned header to provide the full path name of the file.
-func FileInfoHeader(fi os.FileInfo, link string) (*Header, error) {
-	if fi == nil {
-		return nil, errors.New("tar: FileInfo is nil")
-	}
-	fm := fi.Mode()
-	h := &Header{
-		Name:    fi.Name(),
-		ModTime: fi.ModTime(),
-		Mode:    int64(fm.Perm()), // or'd with c_IS* constants later
-	}
-	switch {
-	case fm.IsRegular():
-		h.Mode |= c_ISREG
-		h.Typeflag = TypeReg
-		h.Size = fi.Size()
-	case fi.IsDir():
-		h.Typeflag = TypeDir
-		h.Mode |= c_ISDIR
-		h.Name += "/"
-	case fm&os.ModeSymlink != 0:
-		h.Typeflag = TypeSymlink
-		h.Mode |= c_ISLNK
-		h.Linkname = link
-	case fm&os.ModeDevice != 0:
-		if fm&os.ModeCharDevice != 0 {
-			h.Mode |= c_ISCHR
-			h.Typeflag = TypeChar
-		} else {
-			h.Mode |= c_ISBLK
-			h.Typeflag = TypeBlock
-		}
-	case fm&os.ModeNamedPipe != 0:
-		h.Typeflag = TypeFifo
-		h.Mode |= c_ISFIFO
-	case fm&os.ModeSocket != 0:
-		h.Mode |= c_ISSOCK
-	default:
-		return nil, fmt.Errorf("archive/tar: unknown file mode %v", fm)
-	}
-	if fm&os.ModeSetuid != 0 {
-		h.Mode |= c_ISUID
-	}
-	if fm&os.ModeSetgid != 0 {
-		h.Mode |= c_ISGID
-	}
-	if fm&os.ModeSticky != 0 {
-		h.Mode |= c_ISVTX
-	}
-	if sysStat != nil {
-		return h, sysStat(fi, h)
-	}
-	return h, nil
-}
-
-var zeroBlock = make([]byte, blockSize)
-
-// POSIX specifies a sum of the unsigned byte values, but the Sun tar uses signed byte values.
-// We compute and return both.
-func checksum(header []byte) (unsigned int64, signed int64) {
-	for i := 0; i < len(header); i++ {
-		if i == 148 {
-			// The chksum field (header[148:156]) is special: it should be treated as space bytes.
-			unsigned += ' ' * 8
-			signed += ' ' * 8
-			i += 7
-			continue
-		}
-		unsigned += int64(header[i])
-		signed += int64(int8(header[i]))
-	}
-	return
-}
-
-type slicer []byte
-
-func (sp *slicer) next(n int) (b []byte) {
-	s := *sp
-	b, *sp = s[0:n], s[n:]
-	return
-}
-
-func isASCII(s string) bool {
-	for _, c := range s {
-		if c >= 0x80 {
-			return false
-		}
-	}
-	return true
-}
-
-func toASCII(s string) string {
-	if isASCII(s) {
-		return s
-	}
-	var buf bytes.Buffer
-	for _, c := range s {
-		if c < 0x80 {
-			buf.WriteByte(byte(c))
-		}
-	}
-	return buf.String()
-}