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Diffstat (limited to 'src/pkg/archive/tar/common.go')
-rw-r--r-- | src/pkg/archive/tar/common.go | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/src/pkg/archive/tar/common.go b/src/pkg/archive/tar/common.go deleted file mode 100644 index 528858765..000000000 --- a/src/pkg/archive/tar/common.go +++ /dev/null @@ -1,75 +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 -package tar - -const ( - blockSize = 512 - - // Types - TypeReg = '0' - TypeRegA = '\x00' - TypeLink = '1' - TypeSymlink = '2' - TypeChar = '3' - TypeBlock = '4' - TypeDir = '5' - TypeFifo = '6' - TypeCont = '7' - TypeXHeader = 'x' - TypeXGlobalHeader = 'g' -) - -// A Header represents a single header in a tar archive. -// Some fields may not be populated. -type Header struct { - Name string - Mode int64 - Uid int - Gid int - Size int64 - Mtime int64 - Typeflag byte - Linkname string - Uname string - Gname string - Devmajor int64 - Devminor int64 - Atime int64 - Ctime int64 -} - -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 -} |