mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-12-14 11:48:09 -05:00
684b7a999f
* Dump: Use mholt/archive/v3 to support tar including many compressions Signed-off-by: Philipp Homann <homann.philipp@googlemail.com> * Dump: Allow dump output to stdout Signed-off-by: Philipp Homann <homann.philipp@googlemail.com> * Dump: Fixed bug present since #6677 where SessionConfig.Provider is never "file" Signed-off-by: Philipp Homann <homann.philipp@googlemail.com> * Dump: never pack RepoRootPath, LFS.ContentPath and LogRootPath when they are below AppDataPath Signed-off-by: Philipp Homann <homann.philipp@googlemail.com> * Dump: also dump LFS (fixes #10058) Signed-off-by: Philipp Homann <homann.philipp@googlemail.com> * Dump: never dump CustomPath if CustomPath is a subdir of or equal to AppDataPath (fixes #10365) Signed-off-by: Philipp Homann <homann.philipp@googlemail.com> * Use log.Info instead of fmt.Fprintf Signed-off-by: Philipp Homann <homann.philipp@googlemail.com> * import ordering * make fmt Co-authored-by: zeripath <art27@cantab.net> Co-authored-by: techknowlogick <techknowlogick@gitea.io> Co-authored-by: Matti R <matti@mdranta.net>
124 lines
3.7 KiB
Go
Vendored
124 lines
3.7 KiB
Go
Vendored
/*
|
|
* XZ decompressor
|
|
*
|
|
* Authors: Lasse Collin <lasse.collin@tukaani.org>
|
|
* Igor Pavlov <http://7-zip.org/>
|
|
*
|
|
* Translation to Go: Michael Cross <https://github.com/xi2>
|
|
*
|
|
* This file has been put into the public domain.
|
|
* You can do whatever you want with this file.
|
|
*/
|
|
|
|
package xz
|
|
|
|
/* from linux/include/linux/xz.h **************************************/
|
|
|
|
/**
|
|
* xzRet - Return codes
|
|
* @xzOK: Everything is OK so far. More input or more
|
|
* output space is required to continue.
|
|
* @xzStreamEnd: Operation finished successfully.
|
|
* @xzUnSupportedCheck: Integrity check type is not supported. Decoding
|
|
* is still possible by simply calling xzDecRun
|
|
* again.
|
|
* @xzMemlimitError: A bigger LZMA2 dictionary would be needed than
|
|
* allowed by the dictMax argument given to
|
|
* xzDecInit.
|
|
* @xzFormatError: File format was not recognized (wrong magic
|
|
* bytes).
|
|
* @xzOptionsError: This implementation doesn't support the requested
|
|
* compression options. In the decoder this means
|
|
* that the header CRC32 matches, but the header
|
|
* itself specifies something that we don't support.
|
|
* @xzDataError: Compressed data is corrupt.
|
|
* @xzBufError: Cannot make any progress.
|
|
*
|
|
* xzBufError is returned when two consecutive calls to XZ code cannot
|
|
* consume any input and cannot produce any new output. This happens
|
|
* when there is no new input available, or the output buffer is full
|
|
* while at least one output byte is still pending. Assuming your code
|
|
* is not buggy, you can get this error only when decoding a
|
|
* compressed stream that is truncated or otherwise corrupt.
|
|
*/
|
|
type xzRet int
|
|
|
|
const (
|
|
xzOK xzRet = iota
|
|
xzStreamEnd
|
|
xzUnsupportedCheck
|
|
xzMemlimitError
|
|
xzFormatError
|
|
xzOptionsError
|
|
xzDataError
|
|
xzBufError
|
|
)
|
|
|
|
/**
|
|
* xzBuf - Passing input and output buffers to XZ code
|
|
* @in: Input buffer.
|
|
* @inPos: Current position in the input buffer. This must not exceed
|
|
* input buffer size.
|
|
* @out: Output buffer.
|
|
* @outPos: Current position in the output buffer. This must not exceed
|
|
* output buffer size.
|
|
*
|
|
* Only the contents of the output buffer from out[outPos] onward, and
|
|
* the variables inPos and outPos are modified by the XZ code.
|
|
*/
|
|
type xzBuf struct {
|
|
in []byte
|
|
inPos int
|
|
out []byte
|
|
outPos int
|
|
}
|
|
|
|
/* All XZ filter IDs */
|
|
type xzFilterID int64
|
|
|
|
const (
|
|
idDelta xzFilterID = 0x03
|
|
idBCJX86 xzFilterID = 0x04
|
|
idBCJPowerPC xzFilterID = 0x05
|
|
idBCJIA64 xzFilterID = 0x06
|
|
idBCJARM xzFilterID = 0x07
|
|
idBCJARMThumb xzFilterID = 0x08
|
|
idBCJSPARC xzFilterID = 0x09
|
|
idLZMA2 xzFilterID = 0x21
|
|
)
|
|
|
|
// CheckID is the type of the data integrity check in an XZ stream
|
|
// calculated from the uncompressed data.
|
|
type CheckID int
|
|
|
|
func (id CheckID) String() string {
|
|
switch id {
|
|
case CheckNone:
|
|
return "None"
|
|
case CheckCRC32:
|
|
return "CRC32"
|
|
case CheckCRC64:
|
|
return "CRC64"
|
|
case CheckSHA256:
|
|
return "SHA256"
|
|
default:
|
|
return "Unknown"
|
|
}
|
|
}
|
|
|
|
const (
|
|
CheckNone CheckID = 0x00
|
|
CheckCRC32 CheckID = 0x01
|
|
CheckCRC64 CheckID = 0x04
|
|
CheckSHA256 CheckID = 0x0A
|
|
checkMax CheckID = 0x0F
|
|
checkUnset CheckID = -1
|
|
)
|
|
|
|
// An XZ stream contains a stream header which holds information about
|
|
// the stream. That information is exposed as fields of the
|
|
// Reader. Currently it contains only the stream's data integrity
|
|
// check type.
|
|
type Header struct {
|
|
CheckType CheckID // type of the stream's data integrity check
|
|
}
|