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-rw-r--r--gcc-4.8.1/libgo/go/archive/zip/struct.go302
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diff --git a/gcc-4.8.1/libgo/go/archive/zip/struct.go b/gcc-4.8.1/libgo/go/archive/zip/struct.go
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--- a/gcc-4.8.1/libgo/go/archive/zip/struct.go
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@@ -1,302 +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 zip provides support for reading and writing ZIP archives.
-
-See: http://www.pkware.com/documents/casestudies/APPNOTE.TXT
-
-This package does not support disk spanning.
-
-A note about ZIP64:
-
-To be backwards compatible the FileHeader has both 32 and 64 bit Size
-fields. The 64 bit fields will always contain the correct value and
-for normal archives both fields will be the same. For files requiring
-the ZIP64 format the 32 bit fields will be 0xffffffff and the 64 bit
-fields must be used instead.
-*/
-package zip
-
-import (
- "os"
- "time"
-)
-
-// Compression methods.
-const (
- Store uint16 = 0
- Deflate uint16 = 8
-)
-
-const (
- fileHeaderSignature = 0x04034b50
- directoryHeaderSignature = 0x02014b50
- directoryEndSignature = 0x06054b50
- directory64LocSignature = 0x07064b50
- directory64EndSignature = 0x06064b50
- dataDescriptorSignature = 0x08074b50 // de-facto standard; required by OS X Finder
- fileHeaderLen = 30 // + filename + extra
- directoryHeaderLen = 46 // + filename + extra + comment
- directoryEndLen = 22 // + comment
- dataDescriptorLen = 16 // four uint32: descriptor signature, crc32, compressed size, size
- dataDescriptor64Len = 24 // descriptor with 8 byte sizes
- directory64LocLen = 20 //
- directory64EndLen = 56 // + extra
-
- // Constants for the first byte in CreatorVersion
- creatorFAT = 0
- creatorUnix = 3
- creatorNTFS = 11
- creatorVFAT = 14
- creatorMacOSX = 19
-
- // version numbers
- zipVersion20 = 20 // 2.0
- zipVersion45 = 45 // 4.5 (reads and writes zip64 archives)
-
- // limits for non zip64 files
- uint16max = (1 << 16) - 1
- uint32max = (1 << 32) - 1
-
- // extra header id's
- zip64ExtraId = 0x0001 // zip64 Extended Information Extra Field
-)
-
-type FileHeader struct {
- Name string
- CreatorVersion uint16
- ReaderVersion uint16
- Flags uint16
- Method uint16
- ModifiedTime uint16 // MS-DOS time
- ModifiedDate uint16 // MS-DOS date
- CRC32 uint32
- CompressedSize uint32 // deprecated; use CompressedSize64
- UncompressedSize uint32 // deprecated; use UncompressedSize64
- CompressedSize64 uint64
- UncompressedSize64 uint64
- Extra []byte
- ExternalAttrs uint32 // Meaning depends on CreatorVersion
- Comment string
-}
-
-// FileInfo returns an os.FileInfo for the FileHeader.
-func (h *FileHeader) FileInfo() os.FileInfo {
- return headerFileInfo{h}
-}
-
-// headerFileInfo implements os.FileInfo.
-type headerFileInfo struct {
- fh *FileHeader
-}
-
-func (fi headerFileInfo) Name() string { return fi.fh.Name }
-func (fi headerFileInfo) Size() int64 {
- if fi.fh.UncompressedSize64 > 0 {
- return int64(fi.fh.UncompressedSize64)
- }
- return int64(fi.fh.UncompressedSize)
-}
-func (fi headerFileInfo) IsDir() bool { return fi.Mode().IsDir() }
-func (fi headerFileInfo) ModTime() time.Time { return fi.fh.ModTime() }
-func (fi headerFileInfo) Mode() os.FileMode { return fi.fh.Mode() }
-func (fi headerFileInfo) Sys() interface{} { return fi.fh }
-
-// FileInfoHeader creates a partially-populated FileHeader from an
-// os.FileInfo.
-func FileInfoHeader(fi os.FileInfo) (*FileHeader, error) {
- size := fi.Size()
- fh := &FileHeader{
- Name: fi.Name(),
- UncompressedSize64: uint64(size),
- }
- fh.SetModTime(fi.ModTime())
- fh.SetMode(fi.Mode())
- if fh.UncompressedSize64 > uint32max {
- fh.UncompressedSize = uint32max
- } else {
- fh.UncompressedSize = uint32(fh.UncompressedSize64)
- }
- return fh, nil
-}
-
-type directoryEnd struct {
- diskNbr uint32 // unused
- dirDiskNbr uint32 // unused
- dirRecordsThisDisk uint64 // unused
- directoryRecords uint64
- directorySize uint64
- directoryOffset uint64 // relative to file
- commentLen uint16
- comment string
-}
-
-// msDosTimeToTime converts an MS-DOS date and time into a time.Time.
-// The resolution is 2s.
-// See: http://msdn.microsoft.com/en-us/library/ms724247(v=VS.85).aspx
-func msDosTimeToTime(dosDate, dosTime uint16) time.Time {
- return time.Date(
- // date bits 0-4: day of month; 5-8: month; 9-15: years since 1980
- int(dosDate>>9+1980),
- time.Month(dosDate>>5&0xf),
- int(dosDate&0x1f),
-
- // time bits 0-4: second/2; 5-10: minute; 11-15: hour
- int(dosTime>>11),
- int(dosTime>>5&0x3f),
- int(dosTime&0x1f*2),
- 0, // nanoseconds
-
- time.UTC,
- )
-}
-
-// timeToMsDosTime converts a time.Time to an MS-DOS date and time.
-// The resolution is 2s.
-// See: http://msdn.microsoft.com/en-us/library/ms724274(v=VS.85).aspx
-func timeToMsDosTime(t time.Time) (fDate uint16, fTime uint16) {
- t = t.In(time.UTC)
- fDate = uint16(t.Day() + int(t.Month())<<5 + (t.Year()-1980)<<9)
- fTime = uint16(t.Second()/2 + t.Minute()<<5 + t.Hour()<<11)
- return
-}
-
-// ModTime returns the modification time.
-// The resolution is 2s.
-func (h *FileHeader) ModTime() time.Time {
- return msDosTimeToTime(h.ModifiedDate, h.ModifiedTime)
-}
-
-// SetModTime sets the ModifiedTime and ModifiedDate fields to the given time.
-// The resolution is 2s.
-func (h *FileHeader) SetModTime(t time.Time) {
- h.ModifiedDate, h.ModifiedTime = timeToMsDosTime(t)
-}
-
-const (
- // Unix constants. The specification doesn't mention them,
- // but these seem to be the values agreed on by tools.
- s_IFMT = 0xf000
- s_IFSOCK = 0xc000
- s_IFLNK = 0xa000
- s_IFREG = 0x8000
- s_IFBLK = 0x6000
- s_IFDIR = 0x4000
- s_IFCHR = 0x2000
- s_IFIFO = 0x1000
- s_ISUID = 0x800
- s_ISGID = 0x400
- s_ISVTX = 0x200
-
- msdosDir = 0x10
- msdosReadOnly = 0x01
-)
-
-// Mode returns the permission and mode bits for the FileHeader.
-func (h *FileHeader) Mode() (mode os.FileMode) {
- switch h.CreatorVersion >> 8 {
- case creatorUnix, creatorMacOSX:
- mode = unixModeToFileMode(h.ExternalAttrs >> 16)
- case creatorNTFS, creatorVFAT, creatorFAT:
- mode = msdosModeToFileMode(h.ExternalAttrs)
- }
- if len(h.Name) > 0 && h.Name[len(h.Name)-1] == '/' {
- mode |= os.ModeDir
- }
- return mode
-}
-
-// SetMode changes the permission and mode bits for the FileHeader.
-func (h *FileHeader) SetMode(mode os.FileMode) {
- h.CreatorVersion = h.CreatorVersion&0xff | creatorUnix<<8
- h.ExternalAttrs = fileModeToUnixMode(mode) << 16
-
- // set MSDOS attributes too, as the original zip does.
- if mode&os.ModeDir != 0 {
- h.ExternalAttrs |= msdosDir
- }
- if mode&0200 == 0 {
- h.ExternalAttrs |= msdosReadOnly
- }
-}
-
-// isZip64 returns true if the file size exceeds the 32 bit limit
-func (fh *FileHeader) isZip64() bool {
- return fh.CompressedSize64 > uint32max || fh.UncompressedSize64 > uint32max
-}
-
-func msdosModeToFileMode(m uint32) (mode os.FileMode) {
- if m&msdosDir != 0 {
- mode = os.ModeDir | 0777
- } else {
- mode = 0666
- }
- if m&msdosReadOnly != 0 {
- mode &^= 0222
- }
- return mode
-}
-
-func fileModeToUnixMode(mode os.FileMode) uint32 {
- var m uint32
- switch mode & os.ModeType {
- default:
- m = s_IFREG
- case os.ModeDir:
- m = s_IFDIR
- case os.ModeSymlink:
- m = s_IFLNK
- case os.ModeNamedPipe:
- m = s_IFIFO
- case os.ModeSocket:
- m = s_IFSOCK
- case os.ModeDevice:
- if mode&os.ModeCharDevice != 0 {
- m = s_IFCHR
- } else {
- m = s_IFBLK
- }
- }
- if mode&os.ModeSetuid != 0 {
- m |= s_ISUID
- }
- if mode&os.ModeSetgid != 0 {
- m |= s_ISGID
- }
- if mode&os.ModeSticky != 0 {
- m |= s_ISVTX
- }
- return m | uint32(mode&0777)
-}
-
-func unixModeToFileMode(m uint32) os.FileMode {
- mode := os.FileMode(m & 0777)
- switch m & s_IFMT {
- case s_IFBLK:
- mode |= os.ModeDevice
- case s_IFCHR:
- mode |= os.ModeDevice | os.ModeCharDevice
- case s_IFDIR:
- mode |= os.ModeDir
- case s_IFIFO:
- mode |= os.ModeNamedPipe
- case s_IFLNK:
- mode |= os.ModeSymlink
- case s_IFREG:
- // nothing to do
- case s_IFSOCK:
- mode |= os.ModeSocket
- }
- if m&s_ISGID != 0 {
- mode |= os.ModeSetgid
- }
- if m&s_ISUID != 0 {
- mode |= os.ModeSetuid
- }
- if m&s_ISVTX != 0 {
- mode |= os.ModeSticky
- }
- return mode
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-27 01:51:38 +0000