Jordan Terrell
6 years ago
commit
fc7ed1e20b
@ -0,0 +1,43 @@ |
||||
Maintainers agree to operate under this set of guidelines: |
||||
|
||||
#### Authority |
||||
|
||||
Maintainers are trusted to close issues, merge pull requests, and publish crates to cargo. |
||||
|
||||
#### Categories of Work |
||||
|
||||
0. Minor |
||||
* updating the changelog |
||||
* requires no approval |
||||
1. Normal |
||||
* librocksdb-sys updates |
||||
* API tracking code in the rocksdb crate that does not change control flow |
||||
* breaking changes due to removed functionality in rocksdb |
||||
* require 1 approval from another maintainer. if no maintainer is able to be reached for 2 weeks, then progress may be made anyway |
||||
* patch (and post-1.0, minor) releases to crates.io that contain only the above work |
||||
2. Major |
||||
* breaking API changes that are not direct consequences of underlying rocksdb changes |
||||
* refactoring, which should generally only be done for clearly functional reasons like to aid in the completion of a specific task |
||||
* require consensus among all maintainers unless 2 weeks have gone by without full participation |
||||
* if 2 weeks have gone by after seeking feedback, and at least one other maintainer has participated, and all participating maintainers are in agreement, then progress may be made anyway |
||||
* if action is absolutely urgent, an organization owner may act as a tiebreaker if specifically requested to do so and they agree that making a controversial decision is worth the risk. This should hopefully never occur. |
||||
|
||||
If any maintainer thinks an issue is major, it is major. |
||||
|
||||
#### Changelog Maintenance |
||||
|
||||
* If you are the one who merges a PR that includes an externally-visible change, please describe the change in the changelog and merge it in. |
||||
|
||||
#### Releasing, Publishing |
||||
|
||||
* Releases adhere to [semver](https://semver.org/) |
||||
* To cut a release, an issue should be opened for it and reach the required approval based on the above `Categories of Work` section above |
||||
* When progress is possible, the issue may be closed and the proposer may publish to crates.io. This is controlled by those in the [crate publishers organization-level team](https://github.com/orgs/rust-rocksdb/teams/crate-publishers). |
||||
* Releases should have an associated tag pushed to this repo. I recommend doing this after the publish to crates.io succeeds to prevent any mishaps around pushing a tag for something that can't actually be published. |
||||
* The changelog serves as a sort of logical staging area for releases |
||||
* If a breaking API change happens, and the changelog has not advanced to a new major version, we roll the changelog to a new major version and open an issue to release the previous patch (and post-1.0, minor) version. |
||||
* Before rolling to a new major version, it would be nice to release a non-breaking point release to let current users silently take advantage of any improvements |
||||
|
||||
#### Becoming a Maintainer |
||||
|
||||
* If you have a history of participation in this repo, agree to these rules, and wish to take on maintainership responsibilities, you may open an issue. If an owner agrees, they will add you to the maintainer group and the crate publishers team. |
||||
@ -1,11 +1,31 @@ |
||||
rust-rocksdb |
||||
============ |
||||
[](https://travis-ci.org/spacejam/rust-rocksdb) |
||||
[](https://travis-ci.org/rust-rocksdb/rust-rocksdb) |
||||
[](https://crates.io/crates/rocksdb) |
||||
[](https://docs.rs/rocksdb) |
||||
[](https://gitter.im/rust-rocksdb/lobby) |
||||
|
||||
Feedback and pull requests welcome! If a particular feature of RocksDB is important to you, please let me know by opening an issue, and I'll prioritize it. |
||||
Feedback and pull requests welcome! If a particular feature of RocksDB is |
||||
important to you, please let me know by opening an issue, and I'll |
||||
prioritize it. |
||||
|
||||
This binding is statically linked with a specific version of RocksDB. If you want to build it yourself, make sure you've also cloned the RocksDB and Snappy submodules: |
||||
This binding is statically linked with a specific version of RocksDB. If you |
||||
want to build it yourself, make sure you've also cloned the RocksDB and |
||||
compression submodules: |
||||
|
||||
git submodule update --init --recursive |
||||
|
||||
## Compression Support |
||||
By default, support for the [Snappy](https://github.com/google/snappy), |
||||
[LZ4](https://github.com/lz4/lz4), [Zstd](https://github.com/facebook/zstd), |
||||
[Zlib](https://zlib.net), and [Bzip2](http://www.bzip.org) compression |
||||
is enabled through crate features. If support for all of these compression |
||||
algorithms is not needed, default features can be disabled and specific |
||||
compression algorithms can be enabled. For example, to enable only LZ4 |
||||
compression support, make these changes to your Cargo.toml: |
||||
|
||||
``` |
||||
[dependencies.rocksdb] |
||||
default-features = false |
||||
features = ["lz4"] |
||||
``` |
||||
|
||||
@ -0,0 +1,76 @@ |
||||
# Contributor Covenant Code of Conduct |
||||
|
||||
## Our Pledge |
||||
|
||||
In the interest of fostering an open and welcoming environment, we as |
||||
contributors and maintainers pledge to making participation in our project and |
||||
our community a harassment-free experience for everyone, regardless of age, body |
||||
size, disability, ethnicity, sex characteristics, gender identity and expression, |
||||
level of experience, education, socio-economic status, nationality, personal |
||||
appearance, race, religion, or sexual identity and orientation. |
||||
|
||||
## Our Standards |
||||
|
||||
Examples of behavior that contributes to creating a positive environment |
||||
include: |
||||
|
||||
* Using welcoming and inclusive language |
||||
* Being respectful of differing viewpoints and experiences |
||||
* Gracefully accepting constructive criticism |
||||
* Focusing on what is best for the community |
||||
* Showing empathy towards other community members |
||||
|
||||
Examples of unacceptable behavior by participants include: |
||||
|
||||
* The use of sexualized language or imagery and unwelcome sexual attention or |
||||
advances |
||||
* Trolling, insulting/derogatory comments, and personal or political attacks |
||||
* Public or private harassment |
||||
* Publishing others' private information, such as a physical or electronic |
||||
address, without explicit permission |
||||
* Other conduct which could reasonably be considered inappropriate in a |
||||
professional setting |
||||
|
||||
## Our Responsibilities |
||||
|
||||
Project maintainers are responsible for clarifying the standards of acceptable |
||||
behavior and are expected to take appropriate and fair corrective action in |
||||
response to any instances of unacceptable behavior. |
||||
|
||||
Project maintainers have the right and responsibility to remove, edit, or |
||||
reject comments, commits, code, wiki edits, issues, and other contributions |
||||
that are not aligned to this Code of Conduct, or to ban temporarily or |
||||
permanently any contributor for other behaviors that they deem inappropriate, |
||||
threatening, offensive, or harmful. |
||||
|
||||
## Scope |
||||
|
||||
This Code of Conduct applies both within project spaces and in public spaces |
||||
when an individual is representing the project or its community. Examples of |
||||
representing a project or community include using an official project e-mail |
||||
address, posting via an official social media account, or acting as an appointed |
||||
representative at an online or offline event. Representation of a project may be |
||||
further defined and clarified by project maintainers. |
||||
|
||||
## Enforcement |
||||
|
||||
Instances of abusive, harassing, or otherwise unacceptable behavior may be |
||||
reported by contacting the project team at t@jujit.su. All |
||||
complaints will be reviewed and investigated and will result in a response that |
||||
is deemed necessary and appropriate to the circumstances. The project team is |
||||
obligated to maintain confidentiality with regard to the reporter of an incident. |
||||
Further details of specific enforcement policies may be posted separately. |
||||
|
||||
Project maintainers who do not follow or enforce the Code of Conduct in good |
||||
faith may face temporary or permanent repercussions as determined by other |
||||
members of the project's leadership. |
||||
|
||||
## Attribution |
||||
|
||||
This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4, |
||||
available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html |
||||
|
||||
[homepage]: https://www.contributor-covenant.org |
||||
|
||||
For answers to common questions about this code of conduct, see |
||||
https://www.contributor-covenant.org/faq |
||||
@ -1,2 +0,0 @@ |
||||
target |
||||
Cargo.lock |
||||
@ -0,0 +1,42 @@ |
||||
|
||||
-------------------------------------------------------------------------- |
||||
|
||||
This program, "bzip2", the associated library "libbzip2", and all |
||||
documentation, are copyright (C) 1996-2010 Julian R Seward. All |
||||
rights reserved. |
||||
|
||||
Redistribution and use in source and binary forms, with or without |
||||
modification, are permitted provided that the following conditions |
||||
are met: |
||||
|
||||
1. Redistributions of source code must retain the above copyright |
||||
notice, this list of conditions and the following disclaimer. |
||||
|
||||
2. The origin of this software must not be misrepresented; you must |
||||
not claim that you wrote the original software. If you use this |
||||
software in a product, an acknowledgment in the product |
||||
documentation would be appreciated but is not required. |
||||
|
||||
3. Altered source versions must be plainly marked as such, and must |
||||
not be misrepresented as being the original software. |
||||
|
||||
4. The name of the author may not be used to endorse or promote |
||||
products derived from this software without specific prior written |
||||
permission. |
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS |
||||
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
||||
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
||||
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
||||
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
||||
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
||||
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
||||
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
||||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||||
|
||||
Julian Seward, jseward@bzip.org |
||||
bzip2/libbzip2 version 1.0.6 of 6 September 2010 |
||||
|
||||
-------------------------------------------------------------------------- |
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,282 @@ |
||||
|
||||
/*-------------------------------------------------------------*/ |
||||
/*--- Public header file for the library. ---*/ |
||||
/*--- bzlib.h ---*/ |
||||
/*-------------------------------------------------------------*/ |
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for |
||||
lossless, block-sorting data compression. |
||||
|
||||
bzip2/libbzip2 version 1.0.6 of 6 September 2010 |
||||
Copyright (C) 1996-2010 Julian Seward <jseward@bzip.org> |
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file. |
||||
|
||||
This program is released under the terms of the license contained |
||||
in the file LICENSE. |
||||
------------------------------------------------------------------ */ |
||||
|
||||
|
||||
#ifndef _BZLIB_H |
||||
#define _BZLIB_H |
||||
|
||||
#ifdef __cplusplus |
||||
extern "C" { |
||||
#endif |
||||
|
||||
#define BZ_RUN 0 |
||||
#define BZ_FLUSH 1 |
||||
#define BZ_FINISH 2 |
||||
|
||||
#define BZ_OK 0 |
||||
#define BZ_RUN_OK 1 |
||||
#define BZ_FLUSH_OK 2 |
||||
#define BZ_FINISH_OK 3 |
||||
#define BZ_STREAM_END 4 |
||||
#define BZ_SEQUENCE_ERROR (-1) |
||||
#define BZ_PARAM_ERROR (-2) |
||||
#define BZ_MEM_ERROR (-3) |
||||
#define BZ_DATA_ERROR (-4) |
||||
#define BZ_DATA_ERROR_MAGIC (-5) |
||||
#define BZ_IO_ERROR (-6) |
||||
#define BZ_UNEXPECTED_EOF (-7) |
||||
#define BZ_OUTBUFF_FULL (-8) |
||||
#define BZ_CONFIG_ERROR (-9) |
||||
|
||||
typedef
|
||||
struct { |
||||
char *next_in; |
||||
unsigned int avail_in; |
||||
unsigned int total_in_lo32; |
||||
unsigned int total_in_hi32; |
||||
|
||||
char *next_out; |
||||
unsigned int avail_out; |
||||
unsigned int total_out_lo32; |
||||
unsigned int total_out_hi32; |
||||
|
||||
void *state; |
||||
|
||||
void *(*bzalloc)(void *,int,int); |
||||
void (*bzfree)(void *,void *); |
||||
void *opaque; |
||||
}
|
||||
bz_stream; |
||||
|
||||
|
||||
#ifndef BZ_IMPORT |
||||
#define BZ_EXPORT |
||||
#endif |
||||
|
||||
#ifndef BZ_NO_STDIO |
||||
/* Need a definitition for FILE */ |
||||
#include <stdio.h> |
||||
#endif |
||||
|
||||
#ifdef _WIN32 |
||||
# include <windows.h> |
||||
# ifdef small |
||||
/* windows.h define small to char */ |
||||
# undef small |
||||
# endif |
||||
# ifdef BZ_EXPORT |
||||
# define BZ_API(func) WINAPI func |
||||
# define BZ_EXTERN extern |
||||
# else |
||||
/* import windows dll dynamically */ |
||||
# define BZ_API(func) (WINAPI * func) |
||||
# define BZ_EXTERN |
||||
# endif |
||||
#else |
||||
# define BZ_API(func) func |
||||
# define BZ_EXTERN extern |
||||
#endif |
||||
|
||||
|
||||
/*-- Core (low-level) library functions --*/ |
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzCompressInit) (
|
||||
bz_stream* strm,
|
||||
int blockSize100k,
|
||||
int verbosity,
|
||||
int workFactor
|
||||
); |
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzCompress) (
|
||||
bz_stream* strm,
|
||||
int action
|
||||
); |
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzCompressEnd) (
|
||||
bz_stream* strm
|
||||
); |
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzDecompressInit) (
|
||||
bz_stream *strm,
|
||||
int verbosity,
|
||||
int small |
||||
); |
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzDecompress) (
|
||||
bz_stream* strm
|
||||
); |
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzDecompressEnd) (
|
||||
bz_stream *strm
|
||||
); |
||||
|
||||
|
||||
|
||||
/*-- High(er) level library functions --*/ |
||||
|
||||
#ifndef BZ_NO_STDIO |
||||
#define BZ_MAX_UNUSED 5000 |
||||
|
||||
typedef void BZFILE; |
||||
|
||||
BZ_EXTERN BZFILE* BZ_API(BZ2_bzReadOpen) (
|
||||
int* bzerror,
|
||||
FILE* f,
|
||||
int verbosity,
|
||||
int small, |
||||
void* unused,
|
||||
int nUnused
|
||||
); |
||||
|
||||
BZ_EXTERN void BZ_API(BZ2_bzReadClose) (
|
||||
int* bzerror,
|
||||
BZFILE* b
|
||||
); |
||||
|
||||
BZ_EXTERN void BZ_API(BZ2_bzReadGetUnused) (
|
||||
int* bzerror,
|
||||
BZFILE* b,
|
||||
void** unused,
|
||||
int* nUnused
|
||||
); |
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzRead) (
|
||||
int* bzerror,
|
||||
BZFILE* b,
|
||||
void* buf,
|
||||
int len
|
||||
); |
||||
|
||||
BZ_EXTERN BZFILE* BZ_API(BZ2_bzWriteOpen) (
|
||||
int* bzerror,
|
||||
FILE* f,
|
||||
int blockSize100k,
|
||||
int verbosity,
|
||||
int workFactor
|
||||
); |
||||
|
||||
BZ_EXTERN void BZ_API(BZ2_bzWrite) (
|
||||
int* bzerror,
|
||||
BZFILE* b,
|
||||
void* buf,
|
||||
int len
|
||||
); |
||||
|
||||
BZ_EXTERN void BZ_API(BZ2_bzWriteClose) (
|
||||
int* bzerror,
|
||||
BZFILE* b,
|
||||
int abandon,
|
||||
unsigned int* nbytes_in,
|
||||
unsigned int* nbytes_out
|
||||
); |
||||
|
||||
BZ_EXTERN void BZ_API(BZ2_bzWriteClose64) (
|
||||
int* bzerror,
|
||||
BZFILE* b,
|
||||
int abandon,
|
||||
unsigned int* nbytes_in_lo32,
|
||||
unsigned int* nbytes_in_hi32,
|
||||
unsigned int* nbytes_out_lo32,
|
||||
unsigned int* nbytes_out_hi32 |
||||
); |
||||
#endif |
||||
|
||||
|
||||
/*-- Utility functions --*/ |
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffCompress) (
|
||||
char* dest,
|
||||
unsigned int* destLen, |
||||
char* source,
|
||||
unsigned int sourceLen, |
||||
int blockSize100k,
|
||||
int verbosity,
|
||||
int workFactor
|
||||
); |
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffDecompress) (
|
||||
char* dest,
|
||||
unsigned int* destLen, |
||||
char* source,
|
||||
unsigned int sourceLen, |
||||
int small,
|
||||
int verbosity
|
||||
); |
||||
|
||||
|
||||
/*--
|
||||
Code contributed by Yoshioka Tsuneo (tsuneo@rr.iij4u.or.jp) |
||||
to support better zlib compatibility. |
||||
This code is not _officially_ part of libbzip2 (yet); |
||||
I haven't tested it, documented it, or considered the |
||||
threading-safeness of it. |
||||
If this code breaks, please contact both Yoshioka and me. |
||||
--*/ |
||||
|
||||
BZ_EXTERN const char * BZ_API(BZ2_bzlibVersion) ( |
||||
void |
||||
); |
||||
|
||||
#ifndef BZ_NO_STDIO |
||||
BZ_EXTERN BZFILE * BZ_API(BZ2_bzopen) ( |
||||
const char *path, |
||||
const char *mode |
||||
); |
||||
|
||||
BZ_EXTERN BZFILE * BZ_API(BZ2_bzdopen) ( |
||||
int fd, |
||||
const char *mode |
||||
); |
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzread) ( |
||||
BZFILE* b,
|
||||
void* buf,
|
||||
int len
|
||||
); |
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzwrite) ( |
||||
BZFILE* b,
|
||||
void* buf,
|
||||
int len
|
||||
); |
||||
|
||||
BZ_EXTERN int BZ_API(BZ2_bzflush) ( |
||||
BZFILE* b |
||||
); |
||||
|
||||
BZ_EXTERN void BZ_API(BZ2_bzclose) ( |
||||
BZFILE* b |
||||
); |
||||
|
||||
BZ_EXTERN const char * BZ_API(BZ2_bzerror) ( |
||||
BZFILE *b,
|
||||
int *errnum |
||||
); |
||||
#endif |
||||
|
||||
#ifdef __cplusplus |
||||
} |
||||
#endif |
||||
|
||||
#endif |
||||
|
||||
/*-------------------------------------------------------------*/ |
||||
/*--- end bzlib.h ---*/ |
||||
/*-------------------------------------------------------------*/ |
||||
@ -0,0 +1,509 @@ |
||||
|
||||
/*-------------------------------------------------------------*/ |
||||
/*--- Private header file for the library. ---*/ |
||||
/*--- bzlib_private.h ---*/ |
||||
/*-------------------------------------------------------------*/ |
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for |
||||
lossless, block-sorting data compression. |
||||
|
||||
bzip2/libbzip2 version 1.0.6 of 6 September 2010 |
||||
Copyright (C) 1996-2010 Julian Seward <jseward@bzip.org> |
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file. |
||||
|
||||
This program is released under the terms of the license contained |
||||
in the file LICENSE. |
||||
------------------------------------------------------------------ */ |
||||
|
||||
|
||||
#ifndef _BZLIB_PRIVATE_H |
||||
#define _BZLIB_PRIVATE_H |
||||
|
||||
#include <stdlib.h> |
||||
|
||||
#ifndef BZ_NO_STDIO |
||||
#include <stdio.h> |
||||
#include <ctype.h> |
||||
#include <string.h> |
||||
#endif |
||||
|
||||
#include "bzlib.h" |
||||
|
||||
|
||||
|
||||
/*-- General stuff. --*/ |
||||
|
||||
#define BZ_VERSION "1.0.6, 6-Sept-2010" |
||||
|
||||
typedef char Char; |
||||
typedef unsigned char Bool; |
||||
typedef unsigned char UChar; |
||||
typedef int Int32; |
||||
typedef unsigned int UInt32; |
||||
typedef short Int16; |
||||
typedef unsigned short UInt16; |
||||
|
||||
#define True ((Bool)1) |
||||
#define False ((Bool)0) |
||||
|
||||
#ifndef __GNUC__ |
||||
#define __inline__ /* */ |
||||
#endif |
||||
|
||||
#ifndef BZ_NO_STDIO |
||||
|
||||
extern void BZ2_bz__AssertH__fail ( int errcode ); |
||||
#define AssertH(cond,errcode) \ |
||||
{ if (!(cond)) BZ2_bz__AssertH__fail ( errcode ); } |
||||
|
||||
#if BZ_DEBUG |
||||
#define AssertD(cond,msg) \ |
||||
{ if (!(cond)) { \
|
||||
fprintf ( stderr, \
|
||||
"\n\nlibbzip2(debug build): internal error\n\t%s\n", msg );\
|
||||
exit(1); \
|
||||
}} |
||||
#else |
||||
#define AssertD(cond,msg) /* */ |
||||
#endif |
||||
|
||||
#define VPrintf0(zf) \ |
||||
fprintf(stderr,zf) |
||||
#define VPrintf1(zf,za1) \ |
||||
fprintf(stderr,zf,za1) |
||||
#define VPrintf2(zf,za1,za2) \ |
||||
fprintf(stderr,zf,za1,za2) |
||||
#define VPrintf3(zf,za1,za2,za3) \ |
||||
fprintf(stderr,zf,za1,za2,za3) |
||||
#define VPrintf4(zf,za1,za2,za3,za4) \ |
||||
fprintf(stderr,zf,za1,za2,za3,za4) |
||||
#define VPrintf5(zf,za1,za2,za3,za4,za5) \ |
||||
fprintf(stderr,zf,za1,za2,za3,za4,za5) |
||||
|
||||
#else |
||||
|
||||
extern void bz_internal_error ( int errcode ); |
||||
#define AssertH(cond,errcode) \ |
||||
{ if (!(cond)) bz_internal_error ( errcode ); } |
||||
#define AssertD(cond,msg) do { } while (0) |
||||
#define VPrintf0(zf) do { } while (0) |
||||
#define VPrintf1(zf,za1) do { } while (0) |
||||
#define VPrintf2(zf,za1,za2) do { } while (0) |
||||
#define VPrintf3(zf,za1,za2,za3) do { } while (0) |
||||
#define VPrintf4(zf,za1,za2,za3,za4) do { } while (0) |
||||
#define VPrintf5(zf,za1,za2,za3,za4,za5) do { } while (0) |
||||
|
||||
#endif |
||||
|
||||
|
||||
#define BZALLOC(nnn) (strm->bzalloc)(strm->opaque,(nnn),1) |
||||
#define BZFREE(ppp) (strm->bzfree)(strm->opaque,(ppp)) |
||||
|
||||
|
||||
/*-- Header bytes. --*/ |
||||
|
||||
#define BZ_HDR_B 0x42 /* 'B' */ |
||||
#define BZ_HDR_Z 0x5a /* 'Z' */ |
||||
#define BZ_HDR_h 0x68 /* 'h' */ |
||||
#define BZ_HDR_0 0x30 /* '0' */ |
||||
|
||||
/*-- Constants for the back end. --*/ |
||||
|
||||
#define BZ_MAX_ALPHA_SIZE 258 |
||||
#define BZ_MAX_CODE_LEN 23 |
||||
|
||||
#define BZ_RUNA 0 |
||||
#define BZ_RUNB 1 |
||||
|
||||
#define BZ_N_GROUPS 6 |
||||
#define BZ_G_SIZE 50 |
||||
#define BZ_N_ITERS 4 |
||||
|
||||
#define BZ_MAX_SELECTORS (2 + (900000 / BZ_G_SIZE)) |
||||
|
||||
|
||||
|
||||
/*-- Stuff for randomising repetitive blocks. --*/ |
||||
|
||||
extern Int32 BZ2_rNums[512]; |
||||
|
||||
#define BZ_RAND_DECLS \ |
||||
Int32 rNToGo; \
|
||||
Int32 rTPos \
|
||||
|
||||
#define BZ_RAND_INIT_MASK \ |
||||
s->rNToGo = 0; \
|
||||
s->rTPos = 0 \
|
||||
|
||||
#define BZ_RAND_MASK ((s->rNToGo == 1) ? 1 : 0) |
||||
|
||||
#define BZ_RAND_UPD_MASK \ |
||||
if (s->rNToGo == 0) { \
|
||||
s->rNToGo = BZ2_rNums[s->rTPos]; \
|
||||
s->rTPos++; \
|
||||
if (s->rTPos == 512) s->rTPos = 0; \
|
||||
} \
|
||||
s->rNToGo--; |
||||
|
||||
|
||||
|
||||
/*-- Stuff for doing CRCs. --*/ |
||||
|
||||
extern UInt32 BZ2_crc32Table[256]; |
||||
|
||||
#define BZ_INITIALISE_CRC(crcVar) \ |
||||
{ \
|
||||
crcVar = 0xffffffffL; \
|
||||
} |
||||
|
||||
#define BZ_FINALISE_CRC(crcVar) \ |
||||
{ \
|
||||
crcVar = ~(crcVar); \
|
||||
} |
||||
|
||||
#define BZ_UPDATE_CRC(crcVar,cha) \ |
||||
{ \
|
||||
crcVar = (crcVar << 8) ^ \
|
||||
BZ2_crc32Table[(crcVar >> 24) ^ \
|
||||
((UChar)cha)]; \
|
||||
} |
||||
|
||||
|
||||
|
||||
/*-- States and modes for compression. --*/ |
||||
|
||||
#define BZ_M_IDLE 1 |
||||
#define BZ_M_RUNNING 2 |
||||
#define BZ_M_FLUSHING 3 |
||||
#define BZ_M_FINISHING 4 |
||||
|
||||
#define BZ_S_OUTPUT 1 |
||||
#define BZ_S_INPUT 2 |
||||
|
||||
#define BZ_N_RADIX 2 |
||||
#define BZ_N_QSORT 12 |
||||
#define BZ_N_SHELL 18 |
||||
#define BZ_N_OVERSHOOT (BZ_N_RADIX + BZ_N_QSORT + BZ_N_SHELL + 2) |
||||
|
||||
|
||||
|
||||
|
||||
/*-- Structure holding all the compression-side stuff. --*/ |
||||
|
||||
typedef |
||||
struct { |
||||
/* pointer back to the struct bz_stream */ |
||||
bz_stream* strm; |
||||
|
||||
/* mode this stream is in, and whether inputting */ |
||||
/* or outputting data */ |
||||
Int32 mode; |
||||
Int32 state; |
||||
|
||||
/* remembers avail_in when flush/finish requested */ |
||||
UInt32 avail_in_expect; |
||||
|
||||
/* for doing the block sorting */ |
||||
UInt32* arr1; |
||||
UInt32* arr2; |
||||
UInt32* ftab; |
||||
Int32 origPtr; |
||||
|
||||
/* aliases for arr1 and arr2 */ |
||||
UInt32* ptr; |
||||
UChar* block; |
||||
UInt16* mtfv; |
||||
UChar* zbits; |
||||
|
||||
/* for deciding when to use the fallback sorting algorithm */ |
||||
Int32 workFactor; |
||||
|
||||
/* run-length-encoding of the input */ |
||||
UInt32 state_in_ch; |
||||
Int32 state_in_len; |
||||
BZ_RAND_DECLS; |
||||
|
||||
/* input and output limits and current posns */ |
||||
Int32 nblock; |
||||
Int32 nblockMAX; |
||||
Int32 numZ; |
||||
Int32 state_out_pos; |
||||
|
||||
/* map of bytes used in block */ |
||||
Int32 nInUse; |
||||
Bool inUse[256]; |
||||
UChar unseqToSeq[256]; |
||||
|
||||
/* the buffer for bit stream creation */ |
||||
UInt32 bsBuff; |
||||
Int32 bsLive; |
||||
|
||||
/* block and combined CRCs */ |
||||
UInt32 blockCRC; |
||||
UInt32 combinedCRC; |
||||
|
||||
/* misc administratium */ |
||||
Int32 verbosity; |
||||
Int32 blockNo; |
||||
Int32 blockSize100k; |
||||
|
||||
/* stuff for coding the MTF values */ |
||||
Int32 nMTF; |
||||
Int32 mtfFreq [BZ_MAX_ALPHA_SIZE]; |
||||
UChar selector [BZ_MAX_SELECTORS]; |
||||
UChar selectorMtf[BZ_MAX_SELECTORS]; |
||||
|
||||
UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; |
||||
Int32 code [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; |
||||
Int32 rfreq [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; |
||||
/* second dimension: only 3 needed; 4 makes index calculations faster */ |
||||
UInt32 len_pack[BZ_MAX_ALPHA_SIZE][4]; |
||||
|
||||
} |
||||
EState; |
||||
|
||||
|
||||
|
||||
/*-- externs for compression. --*/ |
||||
|
||||
extern void
|
||||
BZ2_blockSort ( EState* ); |
||||
|
||||
extern void
|
||||
BZ2_compressBlock ( EState*, Bool ); |
||||
|
||||
extern void
|
||||
BZ2_bsInitWrite ( EState* ); |
||||
|
||||
extern void
|
||||
BZ2_hbAssignCodes ( Int32*, UChar*, Int32, Int32, Int32 ); |
||||
|
||||
extern void
|
||||
BZ2_hbMakeCodeLengths ( UChar*, Int32*, Int32, Int32 ); |
||||
|
||||
|
||||
|
||||
/*-- states for decompression. --*/ |
||||
|
||||
#define BZ_X_IDLE 1 |
||||
#define BZ_X_OUTPUT 2 |
||||
|
||||
#define BZ_X_MAGIC_1 10 |
||||
#define BZ_X_MAGIC_2 11 |
||||
#define BZ_X_MAGIC_3 12 |
||||
#define BZ_X_MAGIC_4 13 |
||||
#define BZ_X_BLKHDR_1 14 |
||||
#define BZ_X_BLKHDR_2 15 |
||||
#define BZ_X_BLKHDR_3 16 |
||||
#define BZ_X_BLKHDR_4 17 |
||||
#define BZ_X_BLKHDR_5 18 |
||||
#define BZ_X_BLKHDR_6 19 |
||||
#define BZ_X_BCRC_1 20 |
||||
#define BZ_X_BCRC_2 21 |
||||
#define BZ_X_BCRC_3 22 |
||||
#define BZ_X_BCRC_4 23 |
||||
#define BZ_X_RANDBIT 24 |
||||
#define BZ_X_ORIGPTR_1 25 |
||||
#define BZ_X_ORIGPTR_2 26 |
||||
#define BZ_X_ORIGPTR_3 27 |
||||
#define BZ_X_MAPPING_1 28 |
||||
#define BZ_X_MAPPING_2 29 |
||||
#define BZ_X_SELECTOR_1 30 |
||||
#define BZ_X_SELECTOR_2 31 |
||||
#define BZ_X_SELECTOR_3 32 |
||||
#define BZ_X_CODING_1 33 |
||||
#define BZ_X_CODING_2 34 |
||||
#define BZ_X_CODING_3 35 |
||||
#define BZ_X_MTF_1 36 |
||||
#define BZ_X_MTF_2 37 |
||||
#define BZ_X_MTF_3 38 |
||||
#define BZ_X_MTF_4 39 |
||||
#define BZ_X_MTF_5 40 |
||||
#define BZ_X_MTF_6 41 |
||||
#define BZ_X_ENDHDR_2 42 |
||||
#define BZ_X_ENDHDR_3 43 |
||||
#define BZ_X_ENDHDR_4 44 |
||||
#define BZ_X_ENDHDR_5 45 |
||||
#define BZ_X_ENDHDR_6 46 |
||||
#define BZ_X_CCRC_1 47 |
||||
#define BZ_X_CCRC_2 48 |
||||
#define BZ_X_CCRC_3 49 |
||||
#define BZ_X_CCRC_4 50 |
||||
|
||||
|
||||
|
||||
/*-- Constants for the fast MTF decoder. --*/ |
||||
|
||||
#define MTFA_SIZE 4096 |
||||
#define MTFL_SIZE 16 |
||||
|
||||
|
||||
|
||||
/*-- Structure holding all the decompression-side stuff. --*/ |
||||
|
||||
typedef |
||||
struct { |
||||
/* pointer back to the struct bz_stream */ |
||||
bz_stream* strm; |
||||
|
||||
/* state indicator for this stream */ |
||||
Int32 state; |
||||
|
||||
/* for doing the final run-length decoding */ |
||||
UChar state_out_ch; |
||||
Int32 state_out_len; |
||||
Bool blockRandomised; |
||||
BZ_RAND_DECLS; |
||||
|
||||
/* the buffer for bit stream reading */ |
||||
UInt32 bsBuff; |
||||
Int32 bsLive; |
||||
|
||||
/* misc administratium */ |
||||
Int32 blockSize100k; |
||||
Bool smallDecompress; |
||||
Int32 currBlockNo; |
||||
Int32 verbosity; |
||||
|
||||
/* for undoing the Burrows-Wheeler transform */ |
||||
Int32 origPtr; |
||||
UInt32 tPos; |
||||
Int32 k0; |
||||
Int32 unzftab[256]; |
||||
Int32 nblock_used; |
||||
Int32 cftab[257]; |
||||
Int32 cftabCopy[257]; |
||||
|
||||
/* for undoing the Burrows-Wheeler transform (FAST) */ |
||||
UInt32 *tt; |
||||
|
||||
/* for undoing the Burrows-Wheeler transform (SMALL) */ |
||||
UInt16 *ll16; |
||||
UChar *ll4; |
||||
|
||||
/* stored and calculated CRCs */ |
||||
UInt32 storedBlockCRC; |
||||
UInt32 storedCombinedCRC; |
||||
UInt32 calculatedBlockCRC; |
||||
UInt32 calculatedCombinedCRC; |
||||
|
||||
/* map of bytes used in block */ |
||||
Int32 nInUse; |
||||
Bool inUse[256]; |
||||
Bool inUse16[16]; |
||||
UChar seqToUnseq[256]; |
||||
|
||||
/* for decoding the MTF values */ |
||||
UChar mtfa [MTFA_SIZE]; |
||||
Int32 mtfbase[256 / MTFL_SIZE]; |
||||
UChar selector [BZ_MAX_SELECTORS]; |
||||
UChar selectorMtf[BZ_MAX_SELECTORS]; |
||||
UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; |
||||
|
||||
Int32 limit [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; |
||||
Int32 base [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; |
||||
Int32 perm [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; |
||||
Int32 minLens[BZ_N_GROUPS]; |
||||
|
||||
/* save area for scalars in the main decompress code */ |
||||
Int32 save_i; |
||||
Int32 save_j; |
||||
Int32 save_t; |
||||
Int32 save_alphaSize; |
||||
Int32 save_nGroups; |
||||
Int32 save_nSelectors; |
||||
Int32 save_EOB; |
||||
Int32 save_groupNo; |
||||
Int32 save_groupPos; |
||||
Int32 save_nextSym; |
||||
Int32 save_nblockMAX; |
||||
Int32 save_nblock; |
||||
Int32 save_es; |
||||
Int32 save_N; |
||||
Int32 save_curr; |
||||
Int32 save_zt; |
||||
Int32 save_zn;
|
||||
Int32 save_zvec; |
||||
Int32 save_zj; |
||||
Int32 save_gSel; |
||||
Int32 save_gMinlen; |
||||
Int32* save_gLimit; |
||||
Int32* save_gBase; |
||||
Int32* save_gPerm; |
||||
|
||||
} |
||||
DState; |
||||
|
||||
|
||||
|
||||
/*-- Macros for decompression. --*/ |
||||
|
||||
#define BZ_GET_FAST(cccc) \ |
||||
/* c_tPos is unsigned, hence test < 0 is pointless. */ \
|
||||
if (s->tPos >= (UInt32)100000 * (UInt32)s->blockSize100k) return True; \
|
||||
s->tPos = s->tt[s->tPos]; \
|
||||
cccc = (UChar)(s->tPos & 0xff); \
|
||||
s->tPos >>= 8; |
||||
|
||||
#define BZ_GET_FAST_C(cccc) \ |
||||
/* c_tPos is unsigned, hence test < 0 is pointless. */ \
|
||||
if (c_tPos >= (UInt32)100000 * (UInt32)ro_blockSize100k) return True; \
|
||||
c_tPos = c_tt[c_tPos]; \
|
||||
cccc = (UChar)(c_tPos & 0xff); \
|
||||
c_tPos >>= 8; |
||||
|
||||
#define SET_LL4(i,n) \ |
||||
{ if (((i) & 0x1) == 0) \
|
||||
s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0xf0) | (n); else \
|
||||
s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0x0f) | ((n) << 4); \
|
||||
} |
||||
|
||||
#define GET_LL4(i) \ |
||||
((((UInt32)(s->ll4[(i) >> 1])) >> (((i) << 2) & 0x4)) & 0xF) |
||||
|
||||
#define SET_LL(i,n) \ |
||||
{ s->ll16[i] = (UInt16)(n & 0x0000ffff); \
|
||||
SET_LL4(i, n >> 16); \
|
||||
} |
||||
|
||||
#define GET_LL(i) \ |
||||
(((UInt32)s->ll16[i]) | (GET_LL4(i) << 16)) |
||||
|
||||
#define BZ_GET_SMALL(cccc) \ |
||||
/* c_tPos is unsigned, hence test < 0 is pointless. */ \
|
||||
if (s->tPos >= (UInt32)100000 * (UInt32)s->blockSize100k) return True; \
|
||||
cccc = BZ2_indexIntoF ( s->tPos, s->cftab ); \
|
||||
s->tPos = GET_LL(s->tPos); |
||||
|
||||
|
||||
/*-- externs for decompression. --*/ |
||||
|
||||
extern Int32
|
||||
BZ2_indexIntoF ( Int32, Int32* ); |
||||
|
||||
extern Int32
|
||||
BZ2_decompress ( DState* ); |
||||
|
||||
extern void
|
||||
BZ2_hbCreateDecodeTables ( Int32*, Int32*, Int32*, UChar*, |
||||
Int32, Int32, Int32 ); |
||||
|
||||
|
||||
#endif |
||||
|
||||
|
||||
/*-- BZ_NO_STDIO seems to make NULL disappear on some platforms. --*/ |
||||
|
||||
#ifdef BZ_NO_STDIO |
||||
#ifndef NULL |
||||
#define NULL 0 |
||||
#endif |
||||
#endif |
||||
|
||||
|
||||
/*-------------------------------------------------------------*/ |
||||
/*--- end bzlib_private.h ---*/ |
||||
/*-------------------------------------------------------------*/ |
||||
@ -0,0 +1,672 @@ |
||||
|
||||
/*-------------------------------------------------------------*/ |
||||
/*--- Compression machinery (not incl block sorting) ---*/ |
||||
/*--- compress.c ---*/ |
||||
/*-------------------------------------------------------------*/ |
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for |
||||
lossless, block-sorting data compression. |
||||
|
||||
bzip2/libbzip2 version 1.0.6 of 6 September 2010 |
||||
Copyright (C) 1996-2010 Julian Seward <jseward@bzip.org> |
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file. |
||||
|
||||
This program is released under the terms of the license contained |
||||
in the file LICENSE. |
||||
------------------------------------------------------------------ */ |
||||
|
||||
|
||||
/* CHANGES
|
||||
0.9.0 -- original version. |
||||
0.9.0a/b -- no changes in this file. |
||||
0.9.0c -- changed setting of nGroups in sendMTFValues()
|
||||
so as to do a bit better on small files |
||||
*/ |
||||
|
||||
#include "bzlib_private.h" |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
/*--- Bit stream I/O ---*/ |
||||
/*---------------------------------------------------*/ |
||||
|
||||
/*---------------------------------------------------*/ |
||||
void BZ2_bsInitWrite ( EState* s ) |
||||
{ |
||||
s->bsLive = 0; |
||||
s->bsBuff = 0; |
||||
} |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
static |
||||
void bsFinishWrite ( EState* s ) |
||||
{ |
||||
while (s->bsLive > 0) { |
||||
s->zbits[s->numZ] = (UChar)(s->bsBuff >> 24); |
||||
s->numZ++; |
||||
s->bsBuff <<= 8; |
||||
s->bsLive -= 8; |
||||
} |
||||
} |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
#define bsNEEDW(nz) \ |
||||
{ \
|
||||
while (s->bsLive >= 8) { \
|
||||
s->zbits[s->numZ] \
|
||||
= (UChar)(s->bsBuff >> 24); \
|
||||
s->numZ++; \
|
||||
s->bsBuff <<= 8; \
|
||||
s->bsLive -= 8; \
|
||||
} \
|
||||
} |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
static |
||||
__inline__ |
||||
void bsW ( EState* s, Int32 n, UInt32 v ) |
||||
{ |
||||
bsNEEDW ( n ); |
||||
s->bsBuff |= (v << (32 - s->bsLive - n)); |
||||
s->bsLive += n; |
||||
} |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
static |
||||
void bsPutUInt32 ( EState* s, UInt32 u ) |
||||
{ |
||||
bsW ( s, 8, (u >> 24) & 0xffL ); |
||||
bsW ( s, 8, (u >> 16) & 0xffL ); |
||||
bsW ( s, 8, (u >> 8) & 0xffL ); |
||||
bsW ( s, 8, u & 0xffL ); |
||||
} |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
static |
||||
void bsPutUChar ( EState* s, UChar c ) |
||||
{ |
||||
bsW( s, 8, (UInt32)c ); |
||||
} |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
/*--- The back end proper ---*/ |
||||
/*---------------------------------------------------*/ |
||||
|
||||
/*---------------------------------------------------*/ |
||||
static |
||||
void makeMaps_e ( EState* s ) |
||||
{ |
||||
Int32 i; |
||||
s->nInUse = 0; |
||||
for (i = 0; i < 256; i++) |
||||
if (s->inUse[i]) { |
||||
s->unseqToSeq[i] = s->nInUse; |
||||
s->nInUse++; |
||||
} |
||||
} |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
static |
||||
void generateMTFValues ( EState* s ) |
||||
{ |
||||
UChar yy[256]; |
||||
Int32 i, j; |
||||
Int32 zPend; |
||||
Int32 wr; |
||||
Int32 EOB; |
||||
|
||||
/*
|
||||
After sorting (eg, here), |
||||
s->arr1 [ 0 .. s->nblock-1 ] holds sorted order, |
||||
and |
||||
((UChar*)s->arr2) [ 0 .. s->nblock-1 ]
|
||||
holds the original block data. |
||||
|
||||
The first thing to do is generate the MTF values, |
||||
and put them in |
||||
((UInt16*)s->arr1) [ 0 .. s->nblock-1 ]. |
||||
Because there are strictly fewer or equal MTF values |
||||
than block values, ptr values in this area are overwritten |
||||
with MTF values only when they are no longer needed. |
||||
|
||||
The final compressed bitstream is generated into the |
||||
area starting at |
||||
(UChar*) (&((UChar*)s->arr2)[s->nblock]) |
||||
|
||||
These storage aliases are set up in bzCompressInit(), |
||||
except for the last one, which is arranged in
|
||||
compressBlock(). |
||||
*/ |
||||
UInt32* ptr = s->ptr; |
||||
UChar* block = s->block; |
||||
UInt16* mtfv = s->mtfv; |
||||
|
||||
makeMaps_e ( s ); |
||||
EOB = s->nInUse+1; |
||||
|
||||
for (i = 0; i <= EOB; i++) s->mtfFreq[i] = 0; |
||||
|
||||
wr = 0; |
||||
zPend = 0; |
||||
for (i = 0; i < s->nInUse; i++) yy[i] = (UChar) i; |
||||
|
||||
for (i = 0; i < s->nblock; i++) { |
||||
UChar ll_i; |
||||
AssertD ( wr <= i, "generateMTFValues(1)" ); |
||||
j = ptr[i]-1; if (j < 0) j += s->nblock; |
||||
ll_i = s->unseqToSeq[block[j]]; |
||||
AssertD ( ll_i < s->nInUse, "generateMTFValues(2a)" ); |
||||
|
||||
if (yy[0] == ll_i) {
|
||||
zPend++; |
||||
} else { |
||||
|
||||
if (zPend > 0) { |
||||
zPend--; |
||||
while (True) { |
||||
if (zPend & 1) { |
||||
mtfv[wr] = BZ_RUNB; wr++;
|
||||
s->mtfFreq[BZ_RUNB]++;
|
||||
} else { |
||||
mtfv[wr] = BZ_RUNA; wr++;
|
||||
s->mtfFreq[BZ_RUNA]++;
|
||||
} |
||||
if (zPend < 2) break; |
||||
zPend = (zPend - 2) / 2; |
||||
}; |
||||
zPend = 0; |
||||
} |
||||
{ |
||||
register UChar rtmp; |
||||
register UChar* ryy_j; |
||||
register UChar rll_i; |
||||
rtmp = yy[1]; |
||||
yy[1] = yy[0]; |
||||
ryy_j = &(yy[1]); |
||||
rll_i = ll_i; |
||||
while ( rll_i != rtmp ) { |
||||
register UChar rtmp2; |
||||
ryy_j++; |
||||
rtmp2 = rtmp; |
||||
rtmp = *ryy_j; |
||||
*ryy_j = rtmp2; |
||||
}; |
||||
yy[0] = rtmp; |
||||
j = ryy_j - &(yy[0]); |
||||
mtfv[wr] = j+1; wr++; s->mtfFreq[j+1]++; |
||||
} |
||||
|
||||
} |
||||
} |
||||
|
||||
if (zPend > 0) { |
||||
zPend--; |
||||
while (True) { |
||||
if (zPend & 1) { |
||||
mtfv[wr] = BZ_RUNB; wr++;
|
||||
s->mtfFreq[BZ_RUNB]++;
|
||||
} else { |
||||
mtfv[wr] = BZ_RUNA; wr++;
|
||||
s->mtfFreq[BZ_RUNA]++;
|
||||
} |
||||
if (zPend < 2) break; |
||||
zPend = (zPend - 2) / 2; |
||||
}; |
||||
zPend = 0; |
||||
} |
||||
|
||||
mtfv[wr] = EOB; wr++; s->mtfFreq[EOB]++; |
||||
|
||||
s->nMTF = wr; |
||||
} |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
#define BZ_LESSER_ICOST 0 |
||||
#define BZ_GREATER_ICOST 15 |
||||
|
||||
static |
||||
void sendMTFValues ( EState* s ) |
||||
{ |
||||
Int32 v, t, i, j, gs, ge, totc, bt, bc, iter; |
||||
Int32 nSelectors, alphaSize, minLen, maxLen, selCtr; |
||||
Int32 nGroups, nBytes; |
||||
|
||||
/*--
|
||||
UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; |
||||
is a global since the decoder also needs it. |
||||
|
||||
Int32 code[BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; |
||||
Int32 rfreq[BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE]; |
||||
are also globals only used in this proc. |
||||
Made global to keep stack frame size small. |
||||
--*/ |
||||
|
||||
|
||||
UInt16 cost[BZ_N_GROUPS]; |
||||
Int32 fave[BZ_N_GROUPS]; |
||||
|
||||
UInt16* mtfv = s->mtfv; |
||||
|
||||
if (s->verbosity >= 3) |
||||
VPrintf3( " %d in block, %d after MTF & 1-2 coding, " |
||||
"%d+2 syms in use\n",
|
||||
s->nblock, s->nMTF, s->nInUse ); |
||||
|
||||
alphaSize = s->nInUse+2; |
||||
for (t = 0; t < BZ_N_GROUPS; t++) |
||||
for (v = 0; v < alphaSize; v++) |
||||
s->len[t][v] = BZ_GREATER_ICOST; |
||||
|
||||
/*--- Decide how many coding tables to use ---*/ |
||||
AssertH ( s->nMTF > 0, 3001 ); |
||||
if (s->nMTF < 200) nGroups = 2; else |
||||
if (s->nMTF < 600) nGroups = 3; else |
||||
if (s->nMTF < 1200) nGroups = 4; else |
||||
if (s->nMTF < 2400) nGroups = 5; else |
||||
nGroups = 6; |
||||
|
||||
/*--- Generate an initial set of coding tables ---*/ |
||||
{
|
||||
Int32 nPart, remF, tFreq, aFreq; |
||||
|
||||
nPart = nGroups; |
||||
remF = s->nMTF; |
||||
gs = 0; |
||||
while (nPart > 0) { |
||||
tFreq = remF / nPart; |
||||
ge = gs-1; |
||||
aFreq = 0; |
||||
while (aFreq < tFreq && ge < alphaSize-1) { |
||||
ge++; |
||||
aFreq += s->mtfFreq[ge]; |
||||
} |
||||
|
||||
if (ge > gs
|
||||
&& nPart != nGroups && nPart != 1
|
||||
&& ((nGroups-nPart) % 2 == 1)) { |
||||
aFreq -= s->mtfFreq[ge]; |
||||
ge--; |
||||
} |
||||
|
||||
if (s->verbosity >= 3) |
||||
VPrintf5( " initial group %d, [%d .. %d], " |
||||
"has %d syms (%4.1f%%)\n", |
||||
nPart, gs, ge, aFreq,
|
||||
(100.0 * (float)aFreq) / (float)(s->nMTF) ); |
||||
|
||||
for (v = 0; v < alphaSize; v++) |
||||
if (v >= gs && v <= ge)
|
||||
s->len[nPart-1][v] = BZ_LESSER_ICOST; else |
||||
s->len[nPart-1][v] = BZ_GREATER_ICOST; |
||||
|
||||
nPart--; |
||||
gs = ge+1; |
||||
remF -= aFreq; |
||||
} |
||||
} |
||||
|
||||
/*---
|
||||
Iterate up to BZ_N_ITERS times to improve the tables. |
||||
---*/ |
||||
for (iter = 0; iter < BZ_N_ITERS; iter++) { |
||||
|
||||
for (t = 0; t < nGroups; t++) fave[t] = 0; |
||||
|
||||
for (t = 0; t < nGroups; t++) |
||||
for (v = 0; v < alphaSize; v++) |
||||
s->rfreq[t][v] = 0; |
||||
|
||||
/*---
|
||||
Set up an auxiliary length table which is used to fast-track |
||||
the common case (nGroups == 6).
|
||||
---*/ |
||||
if (nGroups == 6) { |
||||
for (v = 0; v < alphaSize; v++) { |
||||
s->len_pack[v][0] = (s->len[1][v] << 16) | s->len[0][v]; |
||||
s->len_pack[v][1] = (s->len[3][v] << 16) | s->len[2][v]; |
||||
s->len_pack[v][2] = (s->len[5][v] << 16) | s->len[4][v]; |
||||
} |
||||
} |
||||
|
||||
nSelectors = 0; |
||||
totc = 0; |
||||
gs = 0; |
||||
while (True) { |
||||
|
||||
/*--- Set group start & end marks. --*/ |
||||
if (gs >= s->nMTF) break; |
||||
ge = gs + BZ_G_SIZE - 1;
|
||||
if (ge >= s->nMTF) ge = s->nMTF-1; |
||||
|
||||
/*--
|
||||
Calculate the cost of this group as coded |
||||
by each of the coding tables. |
||||
--*/ |
||||
for (t = 0; t < nGroups; t++) cost[t] = 0; |
||||
|
||||
if (nGroups == 6 && 50 == ge-gs+1) { |
||||
/*--- fast track the common case ---*/ |
||||
register UInt32 cost01, cost23, cost45; |
||||
register UInt16 icv; |
||||
cost01 = cost23 = cost45 = 0; |
||||
|
||||
# define BZ_ITER(nn) \ |
||||
icv = mtfv[gs+(nn)]; \
|
||||
cost01 += s->len_pack[icv][0]; \
|
||||
cost23 += s->len_pack[icv][1]; \
|
||||
cost45 += s->len_pack[icv][2]; \
|
||||
|
||||
BZ_ITER(0); BZ_ITER(1); BZ_ITER(2); BZ_ITER(3); BZ_ITER(4); |
||||
BZ_ITER(5); BZ_ITER(6); BZ_ITER(7); BZ_ITER(8); BZ_ITER(9); |
||||
BZ_ITER(10); BZ_ITER(11); BZ_ITER(12); BZ_ITER(13); BZ_ITER(14); |
||||
BZ_ITER(15); BZ_ITER(16); BZ_ITER(17); BZ_ITER(18); BZ_ITER(19); |
||||
BZ_ITER(20); BZ_ITER(21); BZ_ITER(22); BZ_ITER(23); BZ_ITER(24); |
||||
BZ_ITER(25); BZ_ITER(26); BZ_ITER(27); BZ_ITER(28); BZ_ITER(29); |
||||
BZ_ITER(30); BZ_ITER(31); BZ_ITER(32); BZ_ITER(33); BZ_ITER(34); |
||||
BZ_ITER(35); BZ_ITER(36); BZ_ITER(37); BZ_ITER(38); BZ_ITER(39); |
||||
BZ_ITER(40); BZ_ITER(41); BZ_ITER(42); BZ_ITER(43); BZ_ITER(44); |
||||
BZ_ITER(45); BZ_ITER(46); BZ_ITER(47); BZ_ITER(48); BZ_ITER(49); |
||||
|
||||
# undef BZ_ITER |
||||
|
||||
cost[0] = cost01 & 0xffff; cost[1] = cost01 >> 16; |
||||
cost[2] = cost23 & 0xffff; cost[3] = cost23 >> 16; |
||||
cost[4] = cost45 & 0xffff; cost[5] = cost45 >> 16; |
||||
|
||||
} else { |
||||
/*--- slow version which correctly handles all situations ---*/ |
||||
for (i = gs; i <= ge; i++) {
|
||||
UInt16 icv = mtfv[i]; |
||||
for (t = 0; t < nGroups; t++) cost[t] += s->len[t][icv]; |
||||
} |
||||
} |
||||
|
||||
/*--
|
||||
Find the coding table which is best for this group, |
||||
and record its identity in the selector table. |
||||
--*/ |
||||
bc = 999999999; bt = -1; |
||||
for (t = 0; t < nGroups; t++) |
||||
if (cost[t] < bc) { bc = cost[t]; bt = t; }; |
||||
totc += bc; |
||||
fave[bt]++; |
||||
s->selector[nSelectors] = bt; |
||||
nSelectors++; |
||||
|
||||
/*--
|
||||
Increment the symbol frequencies for the selected table. |
||||
--*/ |
||||
if (nGroups == 6 && 50 == ge-gs+1) { |
||||
/*--- fast track the common case ---*/ |
||||
|
||||
# define BZ_ITUR(nn) s->rfreq[bt][ mtfv[gs+(nn)] ]++ |
||||
|
||||
BZ_ITUR(0); BZ_ITUR(1); BZ_ITUR(2); BZ_ITUR(3); BZ_ITUR(4); |
||||
BZ_ITUR(5); BZ_ITUR(6); BZ_ITUR(7); BZ_ITUR(8); BZ_ITUR(9); |
||||
BZ_ITUR(10); BZ_ITUR(11); BZ_ITUR(12); BZ_ITUR(13); BZ_ITUR(14); |
||||
BZ_ITUR(15); BZ_ITUR(16); BZ_ITUR(17); BZ_ITUR(18); BZ_ITUR(19); |
||||
BZ_ITUR(20); BZ_ITUR(21); BZ_ITUR(22); BZ_ITUR(23); BZ_ITUR(24); |
||||
BZ_ITUR(25); BZ_ITUR(26); BZ_ITUR(27); BZ_ITUR(28); BZ_ITUR(29); |
||||
BZ_ITUR(30); BZ_ITUR(31); BZ_ITUR(32); BZ_ITUR(33); BZ_ITUR(34); |
||||
BZ_ITUR(35); BZ_ITUR(36); BZ_ITUR(37); BZ_ITUR(38); BZ_ITUR(39); |
||||
BZ_ITUR(40); BZ_ITUR(41); BZ_ITUR(42); BZ_ITUR(43); BZ_ITUR(44); |
||||
BZ_ITUR(45); BZ_ITUR(46); BZ_ITUR(47); BZ_ITUR(48); BZ_ITUR(49); |
||||
|
||||
# undef BZ_ITUR |
||||
|
||||
} else { |
||||
/*--- slow version which correctly handles all situations ---*/ |
||||
for (i = gs; i <= ge; i++) |
||||
s->rfreq[bt][ mtfv[i] ]++; |
||||
} |
||||
|
||||
gs = ge+1; |
||||
} |
||||
if (s->verbosity >= 3) { |
||||
VPrintf2 ( " pass %d: size is %d, grp uses are ",
|
||||
iter+1, totc/8 ); |
||||
for (t = 0; t < nGroups; t++) |
||||
VPrintf1 ( "%d ", fave[t] ); |
||||
VPrintf0 ( "\n" ); |
||||
} |
||||
|
||||
/*--
|
||||
Recompute the tables based on the accumulated frequencies. |
||||
--*/ |
||||
/* maxLen was changed from 20 to 17 in bzip2-1.0.3. See
|
||||
comment in huffman.c for details. */ |
||||
for (t = 0; t < nGroups; t++) |
||||
BZ2_hbMakeCodeLengths ( &(s->len[t][0]), &(s->rfreq[t][0]),
|
||||
alphaSize, 17 /*20*/ ); |
||||
} |
||||
|
||||
|
||||
AssertH( nGroups < 8, 3002 ); |
||||
AssertH( nSelectors < 32768 && |
||||
nSelectors <= (2 + (900000 / BZ_G_SIZE)), |
||||
3003 ); |
||||
|
||||
|
||||
/*--- Compute MTF values for the selectors. ---*/ |
||||
{ |
||||
UChar pos[BZ_N_GROUPS], ll_i, tmp2, tmp; |
||||
for (i = 0; i < nGroups; i++) pos[i] = i; |
||||
for (i = 0; i < nSelectors; i++) { |
||||
ll_i = s->selector[i]; |
||||
j = 0; |
||||
tmp = pos[j]; |
||||
while ( ll_i != tmp ) { |
||||
j++; |
||||
tmp2 = tmp; |
||||
tmp = pos[j]; |
||||
pos[j] = tmp2; |
||||
}; |
||||
pos[0] = tmp; |
||||
s->selectorMtf[i] = j; |
||||
} |
||||
}; |
||||
|
||||
/*--- Assign actual codes for the tables. --*/ |
||||
for (t = 0; t < nGroups; t++) { |
||||
minLen = 32; |
||||
maxLen = 0; |
||||
for (i = 0; i < alphaSize; i++) { |
||||
if (s->len[t][i] > maxLen) maxLen = s->len[t][i]; |
||||
if (s->len[t][i] < minLen) minLen = s->len[t][i]; |
||||
} |
||||
AssertH ( !(maxLen > 17 /*20*/ ), 3004 ); |
||||
AssertH ( !(minLen < 1), 3005 ); |
||||
BZ2_hbAssignCodes ( &(s->code[t][0]), &(s->len[t][0]),
|
||||
minLen, maxLen, alphaSize ); |
||||
} |
||||
|
||||
/*--- Transmit the mapping table. ---*/ |
||||
{
|
||||
Bool inUse16[16]; |
||||
for (i = 0; i < 16; i++) { |
||||
inUse16[i] = False; |
||||
for (j = 0; j < 16; j++) |
||||
if (s->inUse[i * 16 + j]) inUse16[i] = True; |
||||
} |
||||
|
||||
nBytes = s->numZ; |
||||
for (i = 0; i < 16; i++) |
||||
if (inUse16[i]) bsW(s,1,1); else bsW(s,1,0); |
||||
|
||||
for (i = 0; i < 16; i++) |
||||
if (inUse16[i]) |
||||
for (j = 0; j < 16; j++) { |
||||
if (s->inUse[i * 16 + j]) bsW(s,1,1); else bsW(s,1,0); |
||||
} |
||||
|
||||
if (s->verbosity >= 3)
|
||||
VPrintf1( " bytes: mapping %d, ", s->numZ-nBytes ); |
||||
} |
||||
|
||||
/*--- Now the selectors. ---*/ |
||||
nBytes = s->numZ; |
||||
bsW ( s, 3, nGroups ); |
||||
bsW ( s, 15, nSelectors ); |
||||
for (i = 0; i < nSelectors; i++) {
|
||||
for (j = 0; j < s->selectorMtf[i]; j++) bsW(s,1,1); |
||||
bsW(s,1,0); |
||||
} |
||||
if (s->verbosity >= 3) |
||||
VPrintf1( "selectors %d, ", s->numZ-nBytes ); |
||||
|
||||
/*--- Now the coding tables. ---*/ |
||||
nBytes = s->numZ; |
||||
|
||||
for (t = 0; t < nGroups; t++) { |
||||
Int32 curr = s->len[t][0]; |
||||
bsW ( s, 5, curr ); |
||||
for (i = 0; i < alphaSize; i++) { |
||||
while (curr < s->len[t][i]) { bsW(s,2,2); curr++; /* 10 */ }; |
||||
while (curr > s->len[t][i]) { bsW(s,2,3); curr--; /* 11 */ }; |
||||
bsW ( s, 1, 0 ); |
||||
} |
||||
} |
||||
|
||||
if (s->verbosity >= 3) |
||||
VPrintf1 ( "code lengths %d, ", s->numZ-nBytes ); |
||||
|
||||
/*--- And finally, the block data proper ---*/ |
||||
nBytes = s->numZ; |
||||
selCtr = 0; |
||||
gs = 0; |
||||
while (True) { |
||||
if (gs >= s->nMTF) break; |
||||
ge = gs + BZ_G_SIZE - 1;
|
||||
if (ge >= s->nMTF) ge = s->nMTF-1; |
||||
AssertH ( s->selector[selCtr] < nGroups, 3006 ); |
||||
|
||||
if (nGroups == 6 && 50 == ge-gs+1) { |
||||
/*--- fast track the common case ---*/ |
||||
UInt16 mtfv_i; |
||||
UChar* s_len_sel_selCtr
|
||||
= &(s->len[s->selector[selCtr]][0]); |
||||
Int32* s_code_sel_selCtr |
||||
= &(s->code[s->selector[selCtr]][0]); |
||||
|
||||
# define BZ_ITAH(nn) \ |
||||
mtfv_i = mtfv[gs+(nn)]; \
|
||||
bsW ( s, \
|
||||
s_len_sel_selCtr[mtfv_i], \
|
||||
s_code_sel_selCtr[mtfv_i] ) |
||||
|
||||
BZ_ITAH(0); BZ_ITAH(1); BZ_ITAH(2); BZ_ITAH(3); BZ_ITAH(4); |
||||
BZ_ITAH(5); BZ_ITAH(6); BZ_ITAH(7); BZ_ITAH(8); BZ_ITAH(9); |
||||
BZ_ITAH(10); BZ_ITAH(11); BZ_ITAH(12); BZ_ITAH(13); BZ_ITAH(14); |
||||
BZ_ITAH(15); BZ_ITAH(16); BZ_ITAH(17); BZ_ITAH(18); BZ_ITAH(19); |
||||
BZ_ITAH(20); BZ_ITAH(21); BZ_ITAH(22); BZ_ITAH(23); BZ_ITAH(24); |
||||
BZ_ITAH(25); BZ_ITAH(26); BZ_ITAH(27); BZ_ITAH(28); BZ_ITAH(29); |
||||
BZ_ITAH(30); BZ_ITAH(31); BZ_ITAH(32); BZ_ITAH(33); BZ_ITAH(34); |
||||
BZ_ITAH(35); BZ_ITAH(36); BZ_ITAH(37); BZ_ITAH(38); BZ_ITAH(39); |
||||
BZ_ITAH(40); BZ_ITAH(41); BZ_ITAH(42); BZ_ITAH(43); BZ_ITAH(44); |
||||
BZ_ITAH(45); BZ_ITAH(46); BZ_ITAH(47); BZ_ITAH(48); BZ_ITAH(49); |
||||
|
||||
# undef BZ_ITAH |
||||
|
||||
} else { |
||||
/*--- slow version which correctly handles all situations ---*/ |
||||
for (i = gs; i <= ge; i++) { |
||||
bsW ( s,
|
||||
s->len [s->selector[selCtr]] [mtfv[i]], |
||||
s->code [s->selector[selCtr]] [mtfv[i]] ); |
||||
} |
||||
} |
||||
|
||||
|
||||
gs = ge+1; |
||||
selCtr++; |
||||
} |
||||
AssertH( selCtr == nSelectors, 3007 ); |
||||
|
||||
if (s->verbosity >= 3) |
||||
VPrintf1( "codes %d\n", s->numZ-nBytes ); |
||||
} |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
void BZ2_compressBlock ( EState* s, Bool is_last_block ) |
||||
{ |
||||
if (s->nblock > 0) { |
||||
|
||||
BZ_FINALISE_CRC ( s->blockCRC ); |
||||
s->combinedCRC = (s->combinedCRC << 1) | (s->combinedCRC >> 31); |
||||
s->combinedCRC ^= s->blockCRC; |
||||
if (s->blockNo > 1) s->numZ = 0; |
||||
|
||||
if (s->verbosity >= 2) |
||||
VPrintf4( " block %d: crc = 0x%08x, " |
||||
"combined CRC = 0x%08x, size = %d\n", |
||||
s->blockNo, s->blockCRC, s->combinedCRC, s->nblock ); |
||||
|
||||
BZ2_blockSort ( s ); |
||||
} |
||||
|
||||
s->zbits = (UChar*) (&((UChar*)s->arr2)[s->nblock]); |
||||
|
||||
/*-- If this is the first block, create the stream header. --*/ |
||||
if (s->blockNo == 1) { |
||||
BZ2_bsInitWrite ( s ); |
||||
bsPutUChar ( s, BZ_HDR_B ); |
||||
bsPutUChar ( s, BZ_HDR_Z ); |
||||
bsPutUChar ( s, BZ_HDR_h ); |
||||
bsPutUChar ( s, (UChar)(BZ_HDR_0 + s->blockSize100k) ); |
||||
} |
||||
|
||||
if (s->nblock > 0) { |
||||
|
||||
bsPutUChar ( s, 0x31 ); bsPutUChar ( s, 0x41 ); |
||||
bsPutUChar ( s, 0x59 ); bsPutUChar ( s, 0x26 ); |
||||
bsPutUChar ( s, 0x53 ); bsPutUChar ( s, 0x59 ); |
||||
|
||||
/*-- Now the block's CRC, so it is in a known place. --*/ |
||||
bsPutUInt32 ( s, s->blockCRC ); |
||||
|
||||
/*--
|
||||
Now a single bit indicating (non-)randomisation.
|
||||
As of version 0.9.5, we use a better sorting algorithm |
||||
which makes randomisation unnecessary. So always set |
||||
the randomised bit to 'no'. Of course, the decoder |
||||
still needs to be able to handle randomised blocks |
||||
so as to maintain backwards compatibility with |
||||
older versions of bzip2. |
||||
--*/ |
||||
bsW(s,1,0); |
||||
|
||||
bsW ( s, 24, s->origPtr ); |
||||
generateMTFValues ( s ); |
||||
sendMTFValues ( s ); |
||||
} |
||||
|
||||
|
||||
/*-- If this is the last block, add the stream trailer. --*/ |
||||
if (is_last_block) { |
||||
|
||||
bsPutUChar ( s, 0x17 ); bsPutUChar ( s, 0x72 ); |
||||
bsPutUChar ( s, 0x45 ); bsPutUChar ( s, 0x38 ); |
||||
bsPutUChar ( s, 0x50 ); bsPutUChar ( s, 0x90 ); |
||||
bsPutUInt32 ( s, s->combinedCRC ); |
||||
if (s->verbosity >= 2) |
||||
VPrintf1( " final combined CRC = 0x%08x\n ", s->combinedCRC ); |
||||
bsFinishWrite ( s ); |
||||
} |
||||
} |
||||
|
||||
|
||||
/*-------------------------------------------------------------*/ |
||||
/*--- end compress.c ---*/ |
||||
/*-------------------------------------------------------------*/ |
||||
@ -0,0 +1,104 @@ |
||||
|
||||
/*-------------------------------------------------------------*/ |
||||
/*--- Table for doing CRCs ---*/ |
||||
/*--- crctable.c ---*/ |
||||
/*-------------------------------------------------------------*/ |
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for |
||||
lossless, block-sorting data compression. |
||||
|
||||
bzip2/libbzip2 version 1.0.6 of 6 September 2010 |
||||
Copyright (C) 1996-2010 Julian Seward <jseward@bzip.org> |
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file. |
||||
|
||||
This program is released under the terms of the license contained |
||||
in the file LICENSE. |
||||
------------------------------------------------------------------ */ |
||||
|
||||
|
||||
#include "bzlib_private.h" |
||||
|
||||
/*--
|
||||
I think this is an implementation of the AUTODIN-II, |
||||
Ethernet & FDDI 32-bit CRC standard. Vaguely derived |
||||
from code by Rob Warnock, in Section 51 of the |
||||
comp.compression FAQ. |
||||
--*/ |
||||
|
||||
UInt32 BZ2_crc32Table[256] = { |
||||
|
||||
/*-- Ugly, innit? --*/ |
||||
|
||||
0x00000000L, 0x04c11db7L, 0x09823b6eL, 0x0d4326d9L, |
||||
0x130476dcL, 0x17c56b6bL, 0x1a864db2L, 0x1e475005L, |
||||
0x2608edb8L, 0x22c9f00fL, 0x2f8ad6d6L, 0x2b4bcb61L, |
||||
0x350c9b64L, 0x31cd86d3L, 0x3c8ea00aL, 0x384fbdbdL, |
||||
0x4c11db70L, 0x48d0c6c7L, 0x4593e01eL, 0x4152fda9L, |
||||
0x5f15adacL, 0x5bd4b01bL, 0x569796c2L, 0x52568b75L, |
||||
0x6a1936c8L, 0x6ed82b7fL, 0x639b0da6L, 0x675a1011L, |
||||
0x791d4014L, 0x7ddc5da3L, 0x709f7b7aL, 0x745e66cdL, |
||||
0x9823b6e0L, 0x9ce2ab57L, 0x91a18d8eL, 0x95609039L, |
||||
0x8b27c03cL, 0x8fe6dd8bL, 0x82a5fb52L, 0x8664e6e5L, |
||||
0xbe2b5b58L, 0xbaea46efL, 0xb7a96036L, 0xb3687d81L, |
||||
0xad2f2d84L, 0xa9ee3033L, 0xa4ad16eaL, 0xa06c0b5dL, |
||||
0xd4326d90L, 0xd0f37027L, 0xddb056feL, 0xd9714b49L, |
||||
0xc7361b4cL, 0xc3f706fbL, 0xceb42022L, 0xca753d95L, |
||||
0xf23a8028L, 0xf6fb9d9fL, 0xfbb8bb46L, 0xff79a6f1L, |
||||
0xe13ef6f4L, 0xe5ffeb43L, 0xe8bccd9aL, 0xec7dd02dL, |
||||
0x34867077L, 0x30476dc0L, 0x3d044b19L, 0x39c556aeL, |
||||
0x278206abL, 0x23431b1cL, 0x2e003dc5L, 0x2ac12072L, |
||||
0x128e9dcfL, 0x164f8078L, 0x1b0ca6a1L, 0x1fcdbb16L, |
||||
0x018aeb13L, 0x054bf6a4L, 0x0808d07dL, 0x0cc9cdcaL, |
||||
0x7897ab07L, 0x7c56b6b0L, 0x71159069L, 0x75d48ddeL, |
||||
0x6b93dddbL, 0x6f52c06cL, 0x6211e6b5L, 0x66d0fb02L, |
||||
0x5e9f46bfL, 0x5a5e5b08L, 0x571d7dd1L, 0x53dc6066L, |
||||
0x4d9b3063L, 0x495a2dd4L, 0x44190b0dL, 0x40d816baL, |
||||
0xaca5c697L, 0xa864db20L, 0xa527fdf9L, 0xa1e6e04eL, |
||||
0xbfa1b04bL, 0xbb60adfcL, 0xb6238b25L, 0xb2e29692L, |
||||
0x8aad2b2fL, 0x8e6c3698L, 0x832f1041L, 0x87ee0df6L, |
||||
0x99a95df3L, 0x9d684044L, 0x902b669dL, 0x94ea7b2aL, |
||||
0xe0b41de7L, 0xe4750050L, 0xe9362689L, 0xedf73b3eL, |
||||
0xf3b06b3bL, 0xf771768cL, 0xfa325055L, 0xfef34de2L, |
||||
0xc6bcf05fL, 0xc27dede8L, 0xcf3ecb31L, 0xcbffd686L, |
||||
0xd5b88683L, 0xd1799b34L, 0xdc3abdedL, 0xd8fba05aL, |
||||
0x690ce0eeL, 0x6dcdfd59L, 0x608edb80L, 0x644fc637L, |
||||
0x7a089632L, 0x7ec98b85L, 0x738aad5cL, 0x774bb0ebL, |
||||
0x4f040d56L, 0x4bc510e1L, 0x46863638L, 0x42472b8fL, |
||||
0x5c007b8aL, 0x58c1663dL, 0x558240e4L, 0x51435d53L, |
||||
0x251d3b9eL, 0x21dc2629L, 0x2c9f00f0L, 0x285e1d47L, |
||||
0x36194d42L, 0x32d850f5L, 0x3f9b762cL, 0x3b5a6b9bL, |
||||
0x0315d626L, 0x07d4cb91L, 0x0a97ed48L, 0x0e56f0ffL, |
||||
0x1011a0faL, 0x14d0bd4dL, 0x19939b94L, 0x1d528623L, |
||||
0xf12f560eL, 0xf5ee4bb9L, 0xf8ad6d60L, 0xfc6c70d7L, |
||||
0xe22b20d2L, 0xe6ea3d65L, 0xeba91bbcL, 0xef68060bL, |
||||
0xd727bbb6L, 0xd3e6a601L, 0xdea580d8L, 0xda649d6fL, |
||||
0xc423cd6aL, 0xc0e2d0ddL, 0xcda1f604L, 0xc960ebb3L, |
||||
0xbd3e8d7eL, 0xb9ff90c9L, 0xb4bcb610L, 0xb07daba7L, |
||||
0xae3afba2L, 0xaafbe615L, 0xa7b8c0ccL, 0xa379dd7bL, |
||||
0x9b3660c6L, 0x9ff77d71L, 0x92b45ba8L, 0x9675461fL, |
||||
0x8832161aL, 0x8cf30badL, 0x81b02d74L, 0x857130c3L, |
||||
0x5d8a9099L, 0x594b8d2eL, 0x5408abf7L, 0x50c9b640L, |
||||
0x4e8ee645L, 0x4a4ffbf2L, 0x470cdd2bL, 0x43cdc09cL, |
||||
0x7b827d21L, 0x7f436096L, 0x7200464fL, 0x76c15bf8L, |
||||
0x68860bfdL, 0x6c47164aL, 0x61043093L, 0x65c52d24L, |
||||
0x119b4be9L, 0x155a565eL, 0x18197087L, 0x1cd86d30L, |
||||
0x029f3d35L, 0x065e2082L, 0x0b1d065bL, 0x0fdc1becL, |
||||
0x3793a651L, 0x3352bbe6L, 0x3e119d3fL, 0x3ad08088L, |
||||
0x2497d08dL, 0x2056cd3aL, 0x2d15ebe3L, 0x29d4f654L, |
||||
0xc5a92679L, 0xc1683bceL, 0xcc2b1d17L, 0xc8ea00a0L, |
||||
0xd6ad50a5L, 0xd26c4d12L, 0xdf2f6bcbL, 0xdbee767cL, |
||||
0xe3a1cbc1L, 0xe760d676L, 0xea23f0afL, 0xeee2ed18L, |
||||
0xf0a5bd1dL, 0xf464a0aaL, 0xf9278673L, 0xfde69bc4L, |
||||
0x89b8fd09L, 0x8d79e0beL, 0x803ac667L, 0x84fbdbd0L, |
||||
0x9abc8bd5L, 0x9e7d9662L, 0x933eb0bbL, 0x97ffad0cL, |
||||
0xafb010b1L, 0xab710d06L, 0xa6322bdfL, 0xa2f33668L, |
||||
0xbcb4666dL, 0xb8757bdaL, 0xb5365d03L, 0xb1f740b4L |
||||
}; |
||||
|
||||
|
||||
/*-------------------------------------------------------------*/ |
||||
/*--- end crctable.c ---*/ |
||||
/*-------------------------------------------------------------*/ |
||||
@ -0,0 +1,646 @@ |
||||
|
||||
/*-------------------------------------------------------------*/ |
||||
/*--- Decompression machinery ---*/ |
||||
/*--- decompress.c ---*/ |
||||
/*-------------------------------------------------------------*/ |
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for |
||||
lossless, block-sorting data compression. |
||||
|
||||
bzip2/libbzip2 version 1.0.6 of 6 September 2010 |
||||
Copyright (C) 1996-2010 Julian Seward <jseward@bzip.org> |
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file. |
||||
|
||||
This program is released under the terms of the license contained |
||||
in the file LICENSE. |
||||
------------------------------------------------------------------ */ |
||||
|
||||
|
||||
#include "bzlib_private.h" |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
static |
||||
void makeMaps_d ( DState* s ) |
||||
{ |
||||
Int32 i; |
||||
s->nInUse = 0; |
||||
for (i = 0; i < 256; i++) |
||||
if (s->inUse[i]) { |
||||
s->seqToUnseq[s->nInUse] = i; |
||||
s->nInUse++; |
||||
} |
||||
} |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
#define RETURN(rrr) \ |
||||
{ retVal = rrr; goto save_state_and_return; }; |
||||
|
||||
#define GET_BITS(lll,vvv,nnn) \ |
||||
case lll: s->state = lll; \
|
||||
while (True) { \
|
||||
if (s->bsLive >= nnn) { \
|
||||
UInt32 v; \
|
||||
v = (s->bsBuff >> \
|
||||
(s->bsLive-nnn)) & ((1 << nnn)-1); \
|
||||
s->bsLive -= nnn; \
|
||||
vvv = v; \
|
||||
break; \
|
||||
} \
|
||||
if (s->strm->avail_in == 0) RETURN(BZ_OK); \
|
||||
s->bsBuff \
|
||||
= (s->bsBuff << 8) | \
|
||||
((UInt32) \
|
||||
(*((UChar*)(s->strm->next_in)))); \
|
||||
s->bsLive += 8; \
|
||||
s->strm->next_in++; \
|
||||
s->strm->avail_in--; \
|
||||
s->strm->total_in_lo32++; \
|
||||
if (s->strm->total_in_lo32 == 0) \
|
||||
s->strm->total_in_hi32++; \
|
||||
} |
||||
|
||||
#define GET_UCHAR(lll,uuu) \ |
||||
GET_BITS(lll,uuu,8) |
||||
|
||||
#define GET_BIT(lll,uuu) \ |
||||
GET_BITS(lll,uuu,1) |
||||
|
||||
/*---------------------------------------------------*/ |
||||
#define GET_MTF_VAL(label1,label2,lval) \ |
||||
{ \
|
||||
if (groupPos == 0) { \
|
||||
groupNo++; \
|
||||
if (groupNo >= nSelectors) \
|
||||
RETURN(BZ_DATA_ERROR); \
|
||||
groupPos = BZ_G_SIZE; \
|
||||
gSel = s->selector[groupNo]; \
|
||||
gMinlen = s->minLens[gSel]; \
|
||||
gLimit = &(s->limit[gSel][0]); \
|
||||
gPerm = &(s->perm[gSel][0]); \
|
||||
gBase = &(s->base[gSel][0]); \
|
||||
} \
|
||||
groupPos--; \
|
||||
zn = gMinlen; \
|
||||
GET_BITS(label1, zvec, zn); \
|
||||
while (1) { \
|
||||
if (zn > 20 /* the longest code */) \
|
||||
RETURN(BZ_DATA_ERROR); \
|
||||
if (zvec <= gLimit[zn]) break; \
|
||||
zn++; \
|
||||
GET_BIT(label2, zj); \
|
||||
zvec = (zvec << 1) | zj; \
|
||||
}; \
|
||||
if (zvec - gBase[zn] < 0 \
|
||||
|| zvec - gBase[zn] >= BZ_MAX_ALPHA_SIZE) \
|
||||
RETURN(BZ_DATA_ERROR); \
|
||||
lval = gPerm[zvec - gBase[zn]]; \
|
||||
} |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
Int32 BZ2_decompress ( DState* s ) |
||||
{ |
||||
UChar uc; |
||||
Int32 retVal; |
||||
Int32 minLen, maxLen; |
||||
bz_stream* strm = s->strm; |
||||
|
||||
/* stuff that needs to be saved/restored */ |
||||
Int32 i; |
||||
Int32 j; |
||||
Int32 t; |
||||
Int32 alphaSize; |
||||
Int32 nGroups; |
||||
Int32 nSelectors; |
||||
Int32 EOB; |
||||
Int32 groupNo; |
||||
Int32 groupPos; |
||||
Int32 nextSym; |
||||
Int32 nblockMAX; |
||||
Int32 nblock; |
||||
Int32 es; |
||||
Int32 N; |
||||
Int32 curr; |
||||
Int32 zt; |
||||
Int32 zn;
|
||||
Int32 zvec; |
||||
Int32 zj; |
||||
Int32 gSel; |
||||
Int32 gMinlen; |
||||
Int32* gLimit; |
||||
Int32* gBase; |
||||
Int32* gPerm; |
||||
|
||||
if (s->state == BZ_X_MAGIC_1) { |
||||
/*initialise the save area*/ |
||||
s->save_i = 0; |
||||
s->save_j = 0; |
||||
s->save_t = 0; |
||||
s->save_alphaSize = 0; |
||||
s->save_nGroups = 0; |
||||
s->save_nSelectors = 0; |
||||
s->save_EOB = 0; |
||||
s->save_groupNo = 0; |
||||
s->save_groupPos = 0; |
||||
s->save_nextSym = 0; |
||||
s->save_nblockMAX = 0; |
||||
s->save_nblock = 0; |
||||
s->save_es = 0; |
||||
s->save_N = 0; |
||||
s->save_curr = 0; |
||||
s->save_zt = 0; |
||||
s->save_zn = 0; |
||||
s->save_zvec = 0; |
||||
s->save_zj = 0; |
||||
s->save_gSel = 0; |
||||
s->save_gMinlen = 0; |
||||
s->save_gLimit = NULL; |
||||
s->save_gBase = NULL; |
||||
s->save_gPerm = NULL; |
||||
} |
||||
|
||||
/*restore from the save area*/ |
||||
i = s->save_i; |
||||
j = s->save_j; |
||||
t = s->save_t; |
||||
alphaSize = s->save_alphaSize; |
||||
nGroups = s->save_nGroups; |
||||
nSelectors = s->save_nSelectors; |
||||
EOB = s->save_EOB; |
||||
groupNo = s->save_groupNo; |
||||
groupPos = s->save_groupPos; |
||||
nextSym = s->save_nextSym; |
||||
nblockMAX = s->save_nblockMAX; |
||||
nblock = s->save_nblock; |
||||
es = s->save_es; |
||||
N = s->save_N; |
||||
curr = s->save_curr; |
||||
zt = s->save_zt; |
||||
zn = s->save_zn;
|
||||
zvec = s->save_zvec; |
||||
zj = s->save_zj; |
||||
gSel = s->save_gSel; |
||||
gMinlen = s->save_gMinlen; |
||||
gLimit = s->save_gLimit; |
||||
gBase = s->save_gBase; |
||||
gPerm = s->save_gPerm; |
||||
|
||||
retVal = BZ_OK; |
||||
|
||||
switch (s->state) { |
||||
|
||||
GET_UCHAR(BZ_X_MAGIC_1, uc); |
||||
if (uc != BZ_HDR_B) RETURN(BZ_DATA_ERROR_MAGIC); |
||||
|
||||
GET_UCHAR(BZ_X_MAGIC_2, uc); |
||||
if (uc != BZ_HDR_Z) RETURN(BZ_DATA_ERROR_MAGIC); |
||||
|
||||
GET_UCHAR(BZ_X_MAGIC_3, uc) |
||||
if (uc != BZ_HDR_h) RETURN(BZ_DATA_ERROR_MAGIC); |
||||
|
||||
GET_BITS(BZ_X_MAGIC_4, s->blockSize100k, 8) |
||||
if (s->blockSize100k < (BZ_HDR_0 + 1) ||
|
||||
s->blockSize100k > (BZ_HDR_0 + 9)) RETURN(BZ_DATA_ERROR_MAGIC); |
||||
s->blockSize100k -= BZ_HDR_0; |
||||
|
||||
if (s->smallDecompress) { |
||||
s->ll16 = BZALLOC( s->blockSize100k * 100000 * sizeof(UInt16) ); |
||||
s->ll4 = BZALLOC(
|
||||
((1 + s->blockSize100k * 100000) >> 1) * sizeof(UChar)
|
||||
); |
||||
if (s->ll16 == NULL || s->ll4 == NULL) RETURN(BZ_MEM_ERROR); |
||||
} else { |
||||
s->tt = BZALLOC( s->blockSize100k * 100000 * sizeof(Int32) ); |
||||
if (s->tt == NULL) RETURN(BZ_MEM_ERROR); |
||||
} |
||||
|
||||
GET_UCHAR(BZ_X_BLKHDR_1, uc); |
||||
|
||||
if (uc == 0x17) goto endhdr_2; |
||||
if (uc != 0x31) RETURN(BZ_DATA_ERROR); |
||||
GET_UCHAR(BZ_X_BLKHDR_2, uc); |
||||
if (uc != 0x41) RETURN(BZ_DATA_ERROR); |
||||
GET_UCHAR(BZ_X_BLKHDR_3, uc); |
||||
if (uc != 0x59) RETURN(BZ_DATA_ERROR); |
||||
GET_UCHAR(BZ_X_BLKHDR_4, uc); |
||||
if (uc != 0x26) RETURN(BZ_DATA_ERROR); |
||||
GET_UCHAR(BZ_X_BLKHDR_5, uc); |
||||
if (uc != 0x53) RETURN(BZ_DATA_ERROR); |
||||
GET_UCHAR(BZ_X_BLKHDR_6, uc); |
||||
if (uc != 0x59) RETURN(BZ_DATA_ERROR); |
||||
|
||||
s->currBlockNo++; |
||||
if (s->verbosity >= 2) |
||||
VPrintf1 ( "\n [%d: huff+mtf ", s->currBlockNo ); |
||||
|
||||
s->storedBlockCRC = 0; |
||||
GET_UCHAR(BZ_X_BCRC_1, uc); |
||||
s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc); |
||||
GET_UCHAR(BZ_X_BCRC_2, uc); |
||||
s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc); |
||||
GET_UCHAR(BZ_X_BCRC_3, uc); |
||||
s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc); |
||||
GET_UCHAR(BZ_X_BCRC_4, uc); |
||||
s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc); |
||||
|
||||
GET_BITS(BZ_X_RANDBIT, s->blockRandomised, 1); |
||||
|
||||
s->origPtr = 0; |
||||
GET_UCHAR(BZ_X_ORIGPTR_1, uc); |
||||
s->origPtr = (s->origPtr << 8) | ((Int32)uc); |
||||
GET_UCHAR(BZ_X_ORIGPTR_2, uc); |
||||
s->origPtr = (s->origPtr << 8) | ((Int32)uc); |
||||
GET_UCHAR(BZ_X_ORIGPTR_3, uc); |
||||
s->origPtr = (s->origPtr << 8) | ((Int32)uc); |
||||
|
||||
if (s->origPtr < 0) |
||||
RETURN(BZ_DATA_ERROR); |
||||
if (s->origPtr > 10 + 100000*s->blockSize100k)
|
||||
RETURN(BZ_DATA_ERROR); |
||||
|
||||
/*--- Receive the mapping table ---*/ |
||||
for (i = 0; i < 16; i++) { |
||||
GET_BIT(BZ_X_MAPPING_1, uc); |
||||
if (uc == 1)
|
||||
s->inUse16[i] = True; else
|
||||
s->inUse16[i] = False; |
||||
} |
||||
|
||||
for (i = 0; i < 256; i++) s->inUse[i] = False; |
||||
|
||||
for (i = 0; i < 16; i++) |
||||
if (s->inUse16[i]) |
||||
for (j = 0; j < 16; j++) { |
||||
GET_BIT(BZ_X_MAPPING_2, uc); |
||||
if (uc == 1) s->inUse[i * 16 + j] = True; |
||||
} |
||||
makeMaps_d ( s ); |
||||
if (s->nInUse == 0) RETURN(BZ_DATA_ERROR); |
||||
alphaSize = s->nInUse+2; |
||||
|
||||
/*--- Now the selectors ---*/ |
||||
GET_BITS(BZ_X_SELECTOR_1, nGroups, 3); |
||||
if (nGroups < 2 || nGroups > 6) RETURN(BZ_DATA_ERROR); |
||||
GET_BITS(BZ_X_SELECTOR_2, nSelectors, 15); |
||||
if (nSelectors < 1) RETURN(BZ_DATA_ERROR); |
||||
for (i = 0; i < nSelectors; i++) { |
||||
j = 0; |
||||
while (True) { |
||||
GET_BIT(BZ_X_SELECTOR_3, uc); |
||||
if (uc == 0) break; |
||||
j++; |
||||
if (j >= nGroups) RETURN(BZ_DATA_ERROR); |
||||
} |
||||
s->selectorMtf[i] = j; |
||||
} |
||||
|
||||
/*--- Undo the MTF values for the selectors. ---*/ |
||||
{ |
||||
UChar pos[BZ_N_GROUPS], tmp, v; |
||||
for (v = 0; v < nGroups; v++) pos[v] = v; |
||||
|
||||
for (i = 0; i < nSelectors; i++) { |
||||
v = s->selectorMtf[i]; |
||||
tmp = pos[v]; |
||||
while (v > 0) { pos[v] = pos[v-1]; v--; } |
||||
pos[0] = tmp; |
||||
s->selector[i] = tmp; |
||||
} |
||||
} |
||||
|
||||
/*--- Now the coding tables ---*/ |
||||
for (t = 0; t < nGroups; t++) { |
||||
GET_BITS(BZ_X_CODING_1, curr, 5); |
||||
for (i = 0; i < alphaSize; i++) { |
||||
while (True) { |
||||
if (curr < 1 || curr > 20) RETURN(BZ_DATA_ERROR); |
||||
GET_BIT(BZ_X_CODING_2, uc); |
||||
if (uc == 0) break; |
||||
GET_BIT(BZ_X_CODING_3, uc); |
||||
if (uc == 0) curr++; else curr--; |
||||
} |
||||
s->len[t][i] = curr; |
||||
} |
||||
} |
||||
|
||||
/*--- Create the Huffman decoding tables ---*/ |
||||
for (t = 0; t < nGroups; t++) { |
||||
minLen = 32; |
||||
maxLen = 0; |
||||
for (i = 0; i < alphaSize; i++) { |
||||
if (s->len[t][i] > maxLen) maxLen = s->len[t][i]; |
||||
if (s->len[t][i] < minLen) minLen = s->len[t][i]; |
||||
} |
||||
BZ2_hbCreateDecodeTables (
|
||||
&(s->limit[t][0]),
|
||||
&(s->base[t][0]),
|
||||
&(s->perm[t][0]),
|
||||
&(s->len[t][0]), |
||||
minLen, maxLen, alphaSize |
||||
); |
||||
s->minLens[t] = minLen; |
||||
} |
||||
|
||||
/*--- Now the MTF values ---*/ |
||||
|
||||
EOB = s->nInUse+1; |
||||
nblockMAX = 100000 * s->blockSize100k; |
||||
groupNo = -1; |
||||
groupPos = 0; |
||||
|
||||
for (i = 0; i <= 255; i++) s->unzftab[i] = 0; |
||||
|
||||
/*-- MTF init --*/ |
||||
{ |
||||
Int32 ii, jj, kk; |
||||
kk = MTFA_SIZE-1; |
||||
for (ii = 256 / MTFL_SIZE - 1; ii >= 0; ii--) { |
||||
for (jj = MTFL_SIZE-1; jj >= 0; jj--) { |
||||
s->mtfa[kk] = (UChar)(ii * MTFL_SIZE + jj); |
||||
kk--; |
||||
} |
||||
s->mtfbase[ii] = kk + 1; |
||||
} |
||||
} |
||||
/*-- end MTF init --*/ |
||||
|
||||
nblock = 0; |
||||
GET_MTF_VAL(BZ_X_MTF_1, BZ_X_MTF_2, nextSym); |
||||
|
||||
while (True) { |
||||
|
||||
if (nextSym == EOB) break; |
||||
|
||||
if (nextSym == BZ_RUNA || nextSym == BZ_RUNB) { |
||||
|
||||
es = -1; |
||||
N = 1; |
||||
do { |
||||
/* Check that N doesn't get too big, so that es doesn't
|
||||
go negative. The maximum value that can be |
||||
RUNA/RUNB encoded is equal to the block size (post |
||||
the initial RLE), viz, 900k, so bounding N at 2 |
||||
million should guard against overflow without |
||||
rejecting any legitimate inputs. */ |
||||
if (N >= 2*1024*1024) RETURN(BZ_DATA_ERROR); |
||||
if (nextSym == BZ_RUNA) es = es + (0+1) * N; else |
||||
if (nextSym == BZ_RUNB) es = es + (1+1) * N; |
||||
N = N * 2; |
||||
GET_MTF_VAL(BZ_X_MTF_3, BZ_X_MTF_4, nextSym); |
||||
} |
||||
while (nextSym == BZ_RUNA || nextSym == BZ_RUNB); |
||||
|
||||
es++; |
||||
uc = s->seqToUnseq[ s->mtfa[s->mtfbase[0]] ]; |
||||
s->unzftab[uc] += es; |
||||
|
||||
if (s->smallDecompress) |
||||
while (es > 0) { |
||||
if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR); |
||||
s->ll16[nblock] = (UInt16)uc; |
||||
nblock++; |
||||
es--; |
||||
} |
||||
else |
||||
while (es > 0) { |
||||
if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR); |
||||
s->tt[nblock] = (UInt32)uc; |
||||
nblock++; |
||||
es--; |
||||
}; |
||||
|
||||
continue; |
||||
|
||||
} else { |
||||
|
||||
if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR); |
||||
|
||||
/*-- uc = MTF ( nextSym-1 ) --*/ |
||||
{ |
||||
Int32 ii, jj, kk, pp, lno, off; |
||||
UInt32 nn; |
||||
nn = (UInt32)(nextSym - 1); |
||||
|
||||
if (nn < MTFL_SIZE) { |
||||
/* avoid general-case expense */ |
||||
pp = s->mtfbase[0]; |
||||
uc = s->mtfa[pp+nn]; |
||||
while (nn > 3) { |
||||
Int32 z = pp+nn; |
||||
s->mtfa[(z) ] = s->mtfa[(z)-1]; |
||||
s->mtfa[(z)-1] = s->mtfa[(z)-2]; |
||||
s->mtfa[(z)-2] = s->mtfa[(z)-3]; |
||||
s->mtfa[(z)-3] = s->mtfa[(z)-4]; |
||||
nn -= 4; |
||||
} |
||||
while (nn > 0) {
|
||||
s->mtfa[(pp+nn)] = s->mtfa[(pp+nn)-1]; nn--;
|
||||
}; |
||||
s->mtfa[pp] = uc; |
||||
} else {
|
||||
/* general case */ |
||||
lno = nn / MTFL_SIZE; |
||||
off = nn % MTFL_SIZE; |
||||
pp = s->mtfbase[lno] + off; |
||||
uc = s->mtfa[pp]; |
||||
while (pp > s->mtfbase[lno]) {
|
||||
s->mtfa[pp] = s->mtfa[pp-1]; pp--;
|
||||
}; |
||||
s->mtfbase[lno]++; |
||||
while (lno > 0) { |
||||
s->mtfbase[lno]--; |
||||
s->mtfa[s->mtfbase[lno]]
|
||||
= s->mtfa[s->mtfbase[lno-1] + MTFL_SIZE - 1]; |
||||
lno--; |
||||
} |
||||
s->mtfbase[0]--; |
||||
s->mtfa[s->mtfbase[0]] = uc; |
||||
if (s->mtfbase[0] == 0) { |
||||
kk = MTFA_SIZE-1; |
||||
for (ii = 256 / MTFL_SIZE-1; ii >= 0; ii--) { |
||||
for (jj = MTFL_SIZE-1; jj >= 0; jj--) { |
||||
s->mtfa[kk] = s->mtfa[s->mtfbase[ii] + jj]; |
||||
kk--; |
||||
} |
||||
s->mtfbase[ii] = kk + 1; |
||||
} |
||||
} |
||||
} |
||||
} |
||||
/*-- end uc = MTF ( nextSym-1 ) --*/ |
||||
|
||||
s->unzftab[s->seqToUnseq[uc]]++; |
||||
if (s->smallDecompress) |
||||
s->ll16[nblock] = (UInt16)(s->seqToUnseq[uc]); else |
||||
s->tt[nblock] = (UInt32)(s->seqToUnseq[uc]); |
||||
nblock++; |
||||
|
||||
GET_MTF_VAL(BZ_X_MTF_5, BZ_X_MTF_6, nextSym); |
||||
continue; |
||||
} |
||||
} |
||||
|
||||
/* Now we know what nblock is, we can do a better sanity
|
||||
check on s->origPtr. |
||||
*/ |
||||
if (s->origPtr < 0 || s->origPtr >= nblock) |
||||
RETURN(BZ_DATA_ERROR); |
||||
|
||||
/*-- Set up cftab to facilitate generation of T^(-1) --*/ |
||||
/* Check: unzftab entries in range. */ |
||||
for (i = 0; i <= 255; i++) { |
||||
if (s->unzftab[i] < 0 || s->unzftab[i] > nblock) |
||||
RETURN(BZ_DATA_ERROR); |
||||
} |
||||
/* Actually generate cftab. */ |
||||
s->cftab[0] = 0; |
||||
for (i = 1; i <= 256; i++) s->cftab[i] = s->unzftab[i-1]; |
||||
for (i = 1; i <= 256; i++) s->cftab[i] += s->cftab[i-1]; |
||||
/* Check: cftab entries in range. */ |
||||
for (i = 0; i <= 256; i++) { |
||||
if (s->cftab[i] < 0 || s->cftab[i] > nblock) { |
||||
/* s->cftab[i] can legitimately be == nblock */ |
||||
RETURN(BZ_DATA_ERROR); |
||||
} |
||||
} |
||||
/* Check: cftab entries non-descending. */ |
||||
for (i = 1; i <= 256; i++) { |
||||
if (s->cftab[i-1] > s->cftab[i]) { |
||||
RETURN(BZ_DATA_ERROR); |
||||
} |
||||
} |
||||
|
||||
s->state_out_len = 0; |
||||
s->state_out_ch = 0; |
||||
BZ_INITIALISE_CRC ( s->calculatedBlockCRC ); |
||||
s->state = BZ_X_OUTPUT; |
||||
if (s->verbosity >= 2) VPrintf0 ( "rt+rld" ); |
||||
|
||||
if (s->smallDecompress) { |
||||
|
||||
/*-- Make a copy of cftab, used in generation of T --*/ |
||||
for (i = 0; i <= 256; i++) s->cftabCopy[i] = s->cftab[i]; |
||||
|
||||
/*-- compute the T vector --*/ |
||||
for (i = 0; i < nblock; i++) { |
||||
uc = (UChar)(s->ll16[i]); |
||||
SET_LL(i, s->cftabCopy[uc]); |
||||
s->cftabCopy[uc]++; |
||||
} |
||||
|
||||
/*-- Compute T^(-1) by pointer reversal on T --*/ |
||||
i = s->origPtr; |
||||
j = GET_LL(i); |
||||
do { |
||||
Int32 tmp = GET_LL(j); |
||||
SET_LL(j, i); |
||||
i = j; |
||||
j = tmp; |
||||
} |
||||
while (i != s->origPtr); |
||||
|
||||
s->tPos = s->origPtr; |
||||
s->nblock_used = 0; |
||||
if (s->blockRandomised) { |
||||
BZ_RAND_INIT_MASK; |
||||
BZ_GET_SMALL(s->k0); s->nblock_used++; |
||||
BZ_RAND_UPD_MASK; s->k0 ^= BZ_RAND_MASK;
|
||||
} else { |
||||
BZ_GET_SMALL(s->k0); s->nblock_used++; |
||||
} |
||||
|
||||
} else { |
||||
|
||||
/*-- compute the T^(-1) vector --*/ |
||||
for (i = 0; i < nblock; i++) { |
||||
uc = (UChar)(s->tt[i] & 0xff); |
||||
s->tt[s->cftab[uc]] |= (i << 8); |
||||
s->cftab[uc]++; |
||||
} |
||||
|
||||
s->tPos = s->tt[s->origPtr] >> 8; |
||||
s->nblock_used = 0; |
||||
if (s->blockRandomised) { |
||||
BZ_RAND_INIT_MASK; |
||||
BZ_GET_FAST(s->k0); s->nblock_used++; |
||||
BZ_RAND_UPD_MASK; s->k0 ^= BZ_RAND_MASK;
|
||||
} else { |
||||
BZ_GET_FAST(s->k0); s->nblock_used++; |
||||
} |
||||
|
||||
} |
||||
|
||||
RETURN(BZ_OK); |
||||
|
||||
|
||||
|
||||
endhdr_2: |
||||
|
||||
GET_UCHAR(BZ_X_ENDHDR_2, uc); |
||||
if (uc != 0x72) RETURN(BZ_DATA_ERROR); |
||||
GET_UCHAR(BZ_X_ENDHDR_3, uc); |
||||
if (uc != 0x45) RETURN(BZ_DATA_ERROR); |
||||
GET_UCHAR(BZ_X_ENDHDR_4, uc); |
||||
if (uc != 0x38) RETURN(BZ_DATA_ERROR); |
||||
GET_UCHAR(BZ_X_ENDHDR_5, uc); |
||||
if (uc != 0x50) RETURN(BZ_DATA_ERROR); |
||||
GET_UCHAR(BZ_X_ENDHDR_6, uc); |
||||
if (uc != 0x90) RETURN(BZ_DATA_ERROR); |
||||
|
||||
s->storedCombinedCRC = 0; |
||||
GET_UCHAR(BZ_X_CCRC_1, uc); |
||||
s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc); |
||||
GET_UCHAR(BZ_X_CCRC_2, uc); |
||||
s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc); |
||||
GET_UCHAR(BZ_X_CCRC_3, uc); |
||||
s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc); |
||||
GET_UCHAR(BZ_X_CCRC_4, uc); |
||||
s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc); |
||||
|
||||
s->state = BZ_X_IDLE; |
||||
RETURN(BZ_STREAM_END); |
||||
|
||||
default: AssertH ( False, 4001 ); |
||||
} |
||||
|
||||
AssertH ( False, 4002 ); |
||||
|
||||
save_state_and_return: |
||||
|
||||
s->save_i = i; |
||||
s->save_j = j; |
||||
s->save_t = t; |
||||
s->save_alphaSize = alphaSize; |
||||
s->save_nGroups = nGroups; |
||||
s->save_nSelectors = nSelectors; |
||||
s->save_EOB = EOB; |
||||
s->save_groupNo = groupNo; |
||||
s->save_groupPos = groupPos; |
||||
s->save_nextSym = nextSym; |
||||
s->save_nblockMAX = nblockMAX; |
||||
s->save_nblock = nblock; |
||||
s->save_es = es; |
||||
s->save_N = N; |
||||
s->save_curr = curr; |
||||
s->save_zt = zt; |
||||
s->save_zn = zn; |
||||
s->save_zvec = zvec; |
||||
s->save_zj = zj; |
||||
s->save_gSel = gSel; |
||||
s->save_gMinlen = gMinlen; |
||||
s->save_gLimit = gLimit; |
||||
s->save_gBase = gBase; |
||||
s->save_gPerm = gPerm; |
||||
|
||||
return retVal;
|
||||
} |
||||
|
||||
|
||||
/*-------------------------------------------------------------*/ |
||||
/*--- end decompress.c ---*/ |
||||
/*-------------------------------------------------------------*/ |
||||
@ -0,0 +1,205 @@ |
||||
|
||||
/*-------------------------------------------------------------*/ |
||||
/*--- Huffman coding low-level stuff ---*/ |
||||
/*--- huffman.c ---*/ |
||||
/*-------------------------------------------------------------*/ |
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for |
||||
lossless, block-sorting data compression. |
||||
|
||||
bzip2/libbzip2 version 1.0.6 of 6 September 2010 |
||||
Copyright (C) 1996-2010 Julian Seward <jseward@bzip.org> |
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file. |
||||
|
||||
This program is released under the terms of the license contained |
||||
in the file LICENSE. |
||||
------------------------------------------------------------------ */ |
||||
|
||||
|
||||
#include "bzlib_private.h" |
||||
|
||||
/*---------------------------------------------------*/ |
||||
#define WEIGHTOF(zz0) ((zz0) & 0xffffff00) |
||||
#define DEPTHOF(zz1) ((zz1) & 0x000000ff) |
||||
#define MYMAX(zz2,zz3) ((zz2) > (zz3) ? (zz2) : (zz3)) |
||||
|
||||
#define ADDWEIGHTS(zw1,zw2) \ |
||||
(WEIGHTOF(zw1)+WEIGHTOF(zw2)) | \
|
||||
(1 + MYMAX(DEPTHOF(zw1),DEPTHOF(zw2))) |
||||
|
||||
#define UPHEAP(z) \ |
||||
{ \
|
||||
Int32 zz, tmp; \
|
||||
zz = z; tmp = heap[zz]; \
|
||||
while (weight[tmp] < weight[heap[zz >> 1]]) { \
|
||||
heap[zz] = heap[zz >> 1]; \
|
||||
zz >>= 1; \
|
||||
} \
|
||||
heap[zz] = tmp; \
|
||||
} |
||||
|
||||
#define DOWNHEAP(z) \ |
||||
{ \
|
||||
Int32 zz, yy, tmp; \
|
||||
zz = z; tmp = heap[zz]; \
|
||||
while (True) { \
|
||||
yy = zz << 1; \
|
||||
if (yy > nHeap) break; \
|
||||
if (yy < nHeap && \
|
||||
weight[heap[yy+1]] < weight[heap[yy]]) \
|
||||
yy++; \
|
||||
if (weight[tmp] < weight[heap[yy]]) break; \
|
||||
heap[zz] = heap[yy]; \
|
||||
zz = yy; \
|
||||
} \
|
||||
heap[zz] = tmp; \
|
||||
} |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
void BZ2_hbMakeCodeLengths ( UChar *len,
|
||||
Int32 *freq, |
||||
Int32 alphaSize, |
||||
Int32 maxLen ) |
||||
{ |
||||
/*--
|
||||
Nodes and heap entries run from 1. Entry 0 |
||||
for both the heap and nodes is a sentinel. |
||||
--*/ |
||||
Int32 nNodes, nHeap, n1, n2, i, j, k; |
||||
Bool tooLong; |
||||
|
||||
Int32 heap [ BZ_MAX_ALPHA_SIZE + 2 ]; |
||||
Int32 weight [ BZ_MAX_ALPHA_SIZE * 2 ]; |
||||
Int32 parent [ BZ_MAX_ALPHA_SIZE * 2 ];
|
||||
|
||||
for (i = 0; i < alphaSize; i++) |
||||
weight[i+1] = (freq[i] == 0 ? 1 : freq[i]) << 8; |
||||
|
||||
while (True) { |
||||
|
||||
nNodes = alphaSize; |
||||
nHeap = 0; |
||||
|
||||
heap[0] = 0; |
||||
weight[0] = 0; |
||||
parent[0] = -2; |
||||
|
||||
for (i = 1; i <= alphaSize; i++) { |
||||
parent[i] = -1; |
||||
nHeap++; |
||||
heap[nHeap] = i; |
||||
UPHEAP(nHeap); |
||||
} |
||||
|
||||
AssertH( nHeap < (BZ_MAX_ALPHA_SIZE+2), 2001 ); |
||||
|
||||
while (nHeap > 1) { |
||||
n1 = heap[1]; heap[1] = heap[nHeap]; nHeap--; DOWNHEAP(1); |
||||
n2 = heap[1]; heap[1] = heap[nHeap]; nHeap--; DOWNHEAP(1); |
||||
nNodes++; |
||||
parent[n1] = parent[n2] = nNodes; |
||||
weight[nNodes] = ADDWEIGHTS(weight[n1], weight[n2]); |
||||
parent[nNodes] = -1; |
||||
nHeap++; |
||||
heap[nHeap] = nNodes; |
||||
UPHEAP(nHeap); |
||||
} |
||||
|
||||
AssertH( nNodes < (BZ_MAX_ALPHA_SIZE * 2), 2002 ); |
||||
|
||||
tooLong = False; |
||||
for (i = 1; i <= alphaSize; i++) { |
||||
j = 0; |
||||
k = i; |
||||
while (parent[k] >= 0) { k = parent[k]; j++; } |
||||
len[i-1] = j; |
||||
if (j > maxLen) tooLong = True; |
||||
} |
||||
|
||||
if (! tooLong) break; |
||||
|
||||
/* 17 Oct 04: keep-going condition for the following loop used
|
||||
to be 'i < alphaSize', which missed the last element, |
||||
theoretically leading to the possibility of the compressor |
||||
looping. However, this count-scaling step is only needed if |
||||
one of the generated Huffman code words is longer than |
||||
maxLen, which up to and including version 1.0.2 was 20 bits, |
||||
which is extremely unlikely. In version 1.0.3 maxLen was |
||||
changed to 17 bits, which has minimal effect on compression |
||||
ratio, but does mean this scaling step is used from time to |
||||
time, enough to verify that it works. |
||||
|
||||
This means that bzip2-1.0.3 and later will only produce |
||||
Huffman codes with a maximum length of 17 bits. However, in |
||||
order to preserve backwards compatibility with bitstreams |
||||
produced by versions pre-1.0.3, the decompressor must still |
||||
handle lengths of up to 20. */ |
||||
|
||||
for (i = 1; i <= alphaSize; i++) { |
||||
j = weight[i] >> 8; |
||||
j = 1 + (j / 2); |
||||
weight[i] = j << 8; |
||||
} |
||||
} |
||||
} |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
void BZ2_hbAssignCodes ( Int32 *code, |
||||
UChar *length, |
||||
Int32 minLen, |
||||
Int32 maxLen, |
||||
Int32 alphaSize ) |
||||
{ |
||||
Int32 n, vec, i; |
||||
|
||||
vec = 0; |
||||
for (n = minLen; n <= maxLen; n++) { |
||||
for (i = 0; i < alphaSize; i++) |
||||
if (length[i] == n) { code[i] = vec; vec++; }; |
||||
vec <<= 1; |
||||
} |
||||
} |
||||
|
||||
|
||||
/*---------------------------------------------------*/ |
||||
void BZ2_hbCreateDecodeTables ( Int32 *limit, |
||||
Int32 *base, |
||||
Int32 *perm, |
||||
UChar *length, |
||||
Int32 minLen, |
||||
Int32 maxLen, |
||||
Int32 alphaSize ) |
||||
{ |
||||
Int32 pp, i, j, vec; |
||||
|
||||
pp = 0; |
||||
for (i = minLen; i <= maxLen; i++) |
||||
for (j = 0; j < alphaSize; j++) |
||||
if (length[j] == i) { perm[pp] = j; pp++; }; |
||||
|
||||
for (i = 0; i < BZ_MAX_CODE_LEN; i++) base[i] = 0; |
||||
for (i = 0; i < alphaSize; i++) base[length[i]+1]++; |
||||
|
||||
for (i = 1; i < BZ_MAX_CODE_LEN; i++) base[i] += base[i-1]; |
||||
|
||||
for (i = 0; i < BZ_MAX_CODE_LEN; i++) limit[i] = 0; |
||||
vec = 0; |
||||
|
||||
for (i = minLen; i <= maxLen; i++) { |
||||
vec += (base[i+1] - base[i]); |
||||
limit[i] = vec-1; |
||||
vec <<= 1; |
||||
} |
||||
for (i = minLen + 1; i <= maxLen; i++) |
||||
base[i] = ((limit[i-1] + 1) << 1) - base[i]; |
||||
} |
||||
|
||||
|
||||
/*-------------------------------------------------------------*/ |
||||
/*--- end huffman.c ---*/ |
||||
/*-------------------------------------------------------------*/ |
||||
@ -0,0 +1,84 @@ |
||||
|
||||
/*-------------------------------------------------------------*/ |
||||
/*--- Table for randomising repetitive blocks ---*/ |
||||
/*--- randtable.c ---*/ |
||||
/*-------------------------------------------------------------*/ |
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for |
||||
lossless, block-sorting data compression. |
||||
|
||||
bzip2/libbzip2 version 1.0.6 of 6 September 2010 |
||||
Copyright (C) 1996-2010 Julian Seward <jseward@bzip.org> |
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file. |
||||
|
||||
This program is released under the terms of the license contained |
||||
in the file LICENSE. |
||||
------------------------------------------------------------------ */ |
||||
|
||||
|
||||
#include "bzlib_private.h" |
||||
|
||||
|
||||
/*---------------------------------------------*/ |
||||
Int32 BZ2_rNums[512] = {
|
||||
619, 720, 127, 481, 931, 816, 813, 233, 566, 247,
|
||||
985, 724, 205, 454, 863, 491, 741, 242, 949, 214,
|
||||
733, 859, 335, 708, 621, 574, 73, 654, 730, 472,
|
||||
419, 436, 278, 496, 867, 210, 399, 680, 480, 51,
|
||||
878, 465, 811, 169, 869, 675, 611, 697, 867, 561,
|
||||
862, 687, 507, 283, 482, 129, 807, 591, 733, 623,
|
||||
150, 238, 59, 379, 684, 877, 625, 169, 643, 105,
|
||||
170, 607, 520, 932, 727, 476, 693, 425, 174, 647,
|
||||
73, 122, 335, 530, 442, 853, 695, 249, 445, 515,
|
||||
909, 545, 703, 919, 874, 474, 882, 500, 594, 612,
|
||||
641, 801, 220, 162, 819, 984, 589, 513, 495, 799,
|
||||
161, 604, 958, 533, 221, 400, 386, 867, 600, 782,
|
||||
382, 596, 414, 171, 516, 375, 682, 485, 911, 276,
|
||||
98, 553, 163, 354, 666, 933, 424, 341, 533, 870,
|
||||
227, 730, 475, 186, 263, 647, 537, 686, 600, 224,
|
||||
469, 68, 770, 919, 190, 373, 294, 822, 808, 206,
|
||||
184, 943, 795, 384, 383, 461, 404, 758, 839, 887,
|
||||
715, 67, 618, 276, 204, 918, 873, 777, 604, 560,
|
||||
951, 160, 578, 722, 79, 804, 96, 409, 713, 940,
|
||||
652, 934, 970, 447, 318, 353, 859, 672, 112, 785,
|
||||
645, 863, 803, 350, 139, 93, 354, 99, 820, 908,
|
||||
609, 772, 154, 274, 580, 184, 79, 626, 630, 742,
|
||||
653, 282, 762, 623, 680, 81, 927, 626, 789, 125,
|
||||
411, 521, 938, 300, 821, 78, 343, 175, 128, 250,
|
||||
170, 774, 972, 275, 999, 639, 495, 78, 352, 126,
|
||||
857, 956, 358, 619, 580, 124, 737, 594, 701, 612,
|
||||
669, 112, 134, 694, 363, 992, 809, 743, 168, 974,
|
||||
944, 375, 748, 52, 600, 747, 642, 182, 862, 81,
|
||||
344, 805, 988, 739, 511, 655, 814, 334, 249, 515,
|
||||
897, 955, 664, 981, 649, 113, 974, 459, 893, 228,
|
||||
433, 837, 553, 268, 926, 240, 102, 654, 459, 51,
|
||||
686, 754, 806, 760, 493, 403, 415, 394, 687, 700,
|
||||
946, 670, 656, 610, 738, 392, 760, 799, 887, 653,
|
||||
978, 321, 576, 617, 626, 502, 894, 679, 243, 440,
|
||||
680, 879, 194, 572, 640, 724, 926, 56, 204, 700,
|
||||
707, 151, 457, 449, 797, 195, 791, 558, 945, 679,
|
||||
297, 59, 87, 824, 713, 663, 412, 693, 342, 606,
|
||||
134, 108, 571, 364, 631, 212, 174, 643, 304, 329,
|
||||
343, 97, 430, 751, 497, 314, 983, 374, 822, 928,
|
||||
140, 206, 73, 263, 980, 736, 876, 478, 430, 305,
|
||||
170, 514, 364, 692, 829, 82, 855, 953, 676, 246,
|
||||
369, 970, 294, 750, 807, 827, 150, 790, 288, 923,
|
||||
804, 378, 215, 828, 592, 281, 565, 555, 710, 82,
|
||||
896, 831, 547, 261, 524, 462, 293, 465, 502, 56,
|
||||
661, 821, 976, 991, 658, 869, 905, 758, 745, 193,
|
||||
768, 550, 608, 933, 378, 286, 215, 979, 792, 961,
|
||||
61, 688, 793, 644, 986, 403, 106, 366, 905, 644,
|
||||
372, 567, 466, 434, 645, 210, 389, 550, 919, 135,
|
||||
780, 773, 635, 389, 707, 100, 626, 958, 165, 504,
|
||||
920, 176, 193, 713, 857, 265, 203, 50, 668, 108,
|
||||
645, 990, 626, 197, 510, 357, 358, 850, 858, 364,
|
||||
936, 638 |
||||
}; |
||||
|
||||
|
||||
/*-------------------------------------------------------------*/ |
||||
/*--- end randtable.c ---*/ |
||||
/*-------------------------------------------------------------*/ |
||||
@ -0,0 +1 @@ |
||||
Subproject commit c10863b98e1503af90616ae99725ecd120265dfb |
||||
@ -1 +1 @@ |
||||
Subproject commit efb39e81b8b66b757ec900db33657c47b4750740 |
||||
Subproject commit 2d99bd14d471664758e4dfdf81b44f413a7353fd |
||||
@ -0,0 +1 @@ |
||||
Subproject commit cacf7f1d4e3d44d871b605da3b647f07d718623f |
||||
@ -0,0 +1 @@ |
||||
Subproject commit f3a8bd553a865c59f1bd6e1f68bf182cf75a8f00 |
||||
@ -0,0 +1,80 @@ |
||||
// Copyright 2018 Eugene P.
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
//
|
||||
|
||||
///! Implementation of bindings to RocksDB Checkpoint[1] API
|
||||
///
|
||||
/// [1]: https://github.com/facebook/rocksdb/wiki/Checkpoints
|
||||
|
||||
use {DB, Error}; |
||||
use ffi; |
||||
use std::ffi::CString; |
||||
use std::path::Path; |
||||
|
||||
/// Undocumented parameter for `ffi::rocksdb_checkpoint_create` function. Zero by default.
|
||||
const LOG_SIZE_FOR_FLUSH: u64 = 0_u64; |
||||
|
||||
/// Database's checkpoint object.
|
||||
/// Used to create checkpoints of the specified DB from time to time.
|
||||
pub struct Checkpoint { |
||||
inner: *mut ffi::rocksdb_checkpoint_t, |
||||
} |
||||
|
||||
impl Checkpoint { |
||||
/// Creates new checkpoint object for specific DB.
|
||||
///
|
||||
/// Does not actually produce checkpoints, call `.create_checkpoint()` method to produce
|
||||
/// a DB checkpoint.
|
||||
pub fn new(db: &DB) -> Result<Checkpoint, Error> { |
||||
let checkpoint: *mut ffi::rocksdb_checkpoint_t; |
||||
|
||||
unsafe { checkpoint = ffi_try!(ffi::rocksdb_checkpoint_object_create(db.inner,)) }; |
||||
|
||||
if checkpoint.is_null() { |
||||
return Err(Error::new("Could not create checkpoint object.".to_owned())); |
||||
} |
||||
|
||||
Ok(Checkpoint { |
||||
inner: checkpoint, |
||||
}) |
||||
} |
||||
|
||||
/// Creates new physical DB checkpoint in directory specified by `path`.
|
||||
pub fn create_checkpoint<P: AsRef<Path>>(&self, path: P) -> Result<(), Error> { |
||||
let path = path.as_ref(); |
||||
let cpath = match CString::new(path.to_string_lossy().as_bytes()) { |
||||
Ok(c) => c, |
||||
Err(_) => { |
||||
return Err(Error::new( |
||||
"Failed to convert path to CString when creating DB checkpoint" |
||||
.to_owned(), |
||||
)); |
||||
} |
||||
}; |
||||
|
||||
unsafe { |
||||
ffi_try!(ffi::rocksdb_checkpoint_create(self.inner, cpath.as_ptr(), LOG_SIZE_FOR_FLUSH,)); |
||||
|
||||
Ok(()) |
||||
} |
||||
} |
||||
} |
||||
|
||||
impl Drop for Checkpoint { |
||||
fn drop(&mut self) { |
||||
unsafe { |
||||
ffi::rocksdb_checkpoint_object_destroy(self.inner); |
||||
} |
||||
} |
||||
} |
||||
@ -0,0 +1,113 @@ |
||||
// Copyright 2018 Eugene P.
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
//
|
||||
extern crate rocksdb; |
||||
|
||||
use rocksdb::{checkpoint::Checkpoint, DB, Options}; |
||||
use std::fs::remove_dir_all; |
||||
|
||||
#[test] |
||||
pub fn test_single_checkpoint() { |
||||
const PATH_PREFIX: &str = "_rust_rocksdb_cp_single_"; |
||||
|
||||
// Create DB with some data
|
||||
let db_path = format!("{}db1", PATH_PREFIX); |
||||
|
||||
let _ = remove_dir_all(&db_path); |
||||
|
||||
let mut opts = Options::default(); |
||||
opts.create_if_missing(true); |
||||
let db = DB::open(&opts, &db_path).unwrap(); |
||||
|
||||
db.put(b"k1", b"v1").unwrap(); |
||||
db.put(b"k2", b"v2").unwrap(); |
||||
db.put(b"k3", b"v3").unwrap(); |
||||
db.put(b"k4", b"v4").unwrap(); |
||||
|
||||
// Create checkpoint
|
||||
let cp1 = Checkpoint::new(&db).unwrap(); |
||||
let cp1_path = format!("{}cp1", PATH_PREFIX); |
||||
let _ = remove_dir_all(&cp1_path); |
||||
cp1.create_checkpoint(&cp1_path).unwrap(); |
||||
|
||||
// Verify checkpoint
|
||||
let cp = DB::open_default(&cp1_path).unwrap(); |
||||
|
||||
assert_eq!(*cp.get(b"k1").unwrap().unwrap(), *b"v1"); |
||||
assert_eq!(*cp.get(b"k2").unwrap().unwrap(), *b"v2"); |
||||
assert_eq!(*cp.get(b"k3").unwrap().unwrap(), *b"v3"); |
||||
assert_eq!(*cp.get(b"k4").unwrap().unwrap(), *b"v4"); |
||||
|
||||
let _ = remove_dir_all(&db_path); |
||||
let _ = remove_dir_all(&cp1_path); |
||||
} |
||||
|
||||
#[test] |
||||
pub fn test_multi_checkpoints() { |
||||
const PATH_PREFIX: &str = "_rust_rocksdb_cp_multi_"; |
||||
|
||||
// Create DB with some data
|
||||
let db_path = format!("{}db1", PATH_PREFIX); |
||||
let _ = remove_dir_all(&db_path); |
||||
|
||||
let mut opts = Options::default(); |
||||
opts.create_if_missing(true); |
||||
let db = DB::open(&opts, &db_path).unwrap(); |
||||
|
||||
db.put(b"k1", b"v1").unwrap(); |
||||
db.put(b"k2", b"v2").unwrap(); |
||||
db.put(b"k3", b"v3").unwrap(); |
||||
db.put(b"k4", b"v4").unwrap(); |
||||
|
||||
// Create first checkpoint
|
||||
let cp1 = Checkpoint::new(&db).unwrap(); |
||||
let cp1_path = format!("{}cp1", PATH_PREFIX); |
||||
let _ = remove_dir_all(&cp1_path); |
||||
cp1.create_checkpoint(&cp1_path).unwrap(); |
||||
|
||||
// Verify checkpoint
|
||||
let cp = DB::open_default(&cp1_path).unwrap(); |
||||
|
||||
assert_eq!(*cp.get(b"k1").unwrap().unwrap(), *b"v1"); |
||||
assert_eq!(*cp.get(b"k2").unwrap().unwrap(), *b"v2"); |
||||
assert_eq!(*cp.get(b"k3").unwrap().unwrap(), *b"v3"); |
||||
assert_eq!(*cp.get(b"k4").unwrap().unwrap(), *b"v4"); |
||||
|
||||
let _ = remove_dir_all(&cp1_path); |
||||
|
||||
// Change some existing keys
|
||||
db.put(b"k1", b"modified").unwrap(); |
||||
db.put(b"k2", b"changed").unwrap(); |
||||
|
||||
// Add some new keys
|
||||
db.put(b"k5", b"v5").unwrap(); |
||||
db.put(b"k6", b"v6").unwrap(); |
||||
|
||||
// Create another checkpoint
|
||||
let cp2 = Checkpoint::new(&db).unwrap(); |
||||
let cp2_path = format!("{}cp2", PATH_PREFIX); |
||||
let _ = remove_dir_all(&cp2_path); |
||||
cp2.create_checkpoint(&cp2_path).unwrap(); |
||||
|
||||
// Verify second checkpoint
|
||||
let cp = DB::open_default(&cp2_path).unwrap(); |
||||
|
||||
assert_eq!(*cp.get(b"k1").unwrap().unwrap(), *b"modified"); |
||||
assert_eq!(*cp.get(b"k2").unwrap().unwrap(), *b"changed"); |
||||
assert_eq!(*cp.get(b"k5").unwrap().unwrap(), *b"v5"); |
||||
assert_eq!(*cp.get(b"k6").unwrap().unwrap(), *b"v6"); |
||||
|
||||
let _ = remove_dir_all(&db_path); |
||||
let _ = remove_dir_all(&cp2_path); |
||||
} |
||||
Loading…
Reference in new issue