mirror of
https://github.com/golang/go
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5a1d3323fe
parsing and printing to new syntax.
Use -oldparser to parse the old syntax,
use -oldprinter to print the old syntax.
2) Change default gofmt formatting settings
to use tabs for indentation only and to use
spaces for alignment. This will make the code
alignment insensitive to an editor's tabwidth.
Use -spaces=false to use tabs for alignment.
3) Manually changed src/exp/parser/parser_test.go
so that it doesn't try to parse the parser's
source files using the old syntax (they have
new syntax now).
4) gofmt -w src misc test/bench
1st set of files.
R=rsc
CC=agl, golang-dev, iant, ken2, r
https://golang.org/cl/180047
76 lines
1.7 KiB
Go
76 lines
1.7 KiB
Go
// Copyright 2009 The Go 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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// The tar package implements access to tar archives.
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// It aims to cover most of the variations, including those produced
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// by GNU and BSD tars.
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//
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// References:
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// http://www.freebsd.org/cgi/man.cgi?query=tar&sektion=5
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// http://www.gnu.org/software/tar/manual/html_node/Standard.html
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package tar
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const (
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blockSize = 512
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// Types
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TypeReg = '0'
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TypeRegA = '\x00'
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TypeLink = '1'
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TypeSymlink = '2'
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TypeChar = '3'
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TypeBlock = '4'
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TypeDir = '5'
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TypeFifo = '6'
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TypeCont = '7'
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TypeXHeader = 'x'
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TypeXGlobalHeader = 'g'
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)
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// A Header represents a single header in a tar archive.
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// Some fields may not be populated.
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type Header struct {
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Name string
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Mode int64
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Uid int64
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Gid int64
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Size int64
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Mtime int64
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Typeflag byte
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Linkname string
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Uname string
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Gname string
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Devmajor int64
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Devminor int64
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Atime int64
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Ctime int64
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}
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var zeroBlock = make([]byte, blockSize)
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// POSIX specifies a sum of the unsigned byte values, but the Sun tar uses signed byte values.
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// We compute and return both.
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func checksum(header []byte) (unsigned int64, signed int64) {
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for i := 0; i < len(header); i++ {
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if i == 148 {
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// The chksum field (header[148:156]) is special: it should be treated as space bytes.
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unsigned += ' ' * 8
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signed += ' ' * 8
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i += 7
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continue
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}
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unsigned += int64(header[i])
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signed += int64(int8(header[i]))
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}
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return
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}
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type slicer []byte
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func (sp *slicer) next(n int) (b []byte) {
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s := *sp
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b, *sp = s[0:n], s[n:]
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return
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}
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