ElementW
/
Diggler
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Replace lzfx with lzo 

lzfx is unmaintained and did not run properly on macOS due to its
excessive usage of the stack as storage
master
Dorian Wouters 2018-08-18 22:14:41 +02:00
parent ecec8f7fba
commit f8035472a7
No known key found for this signature in database
GPG Key ID: 6E9DA8063322434B
15 changed files with 10706 additions and 593 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
CMakeLists.txt
View File

@ -45,6 +45,10 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall") # -Wextra")
if(NOT CMAKE_BUILD_TYPE) # Defaults to release
set(CMAKE_BUILD_TYPE Release CACHE STRING "Build type: Debug or Release" FORCE)
endif()
if("${CMAKE_SYSTEM_NAME}" MATCHES "Linux")
set(LINUX TRUE)
endif()
if(CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_CXX_COMPILER_ID MATCHES "GNU")
set(USE_GCC_LTO FALSE CACHE BOOL "Use GCC LTOs")
@ -52,8 +56,8 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_CXX_COMPILER_ID MATCHES "GNU")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
if(NOT (MINGW OR WIN32))
# On non-Windows platforms, make the whole executable position-independent
if(LINUX)
# On Linux, make the whole executable position-independent
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pie")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pie")
endif()
@ -77,7 +81,7 @@ list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
add_subdirectory("${CMAKE_CURRENT_SOURCE_DIR}/ext/enet")
set(ENET_INCLUDE_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/ext/enet/include")
set(ENET_LIBRARIES enet)
add_subdirectory("${CMAKE_CURRENT_SOURCE_DIR}/ext/lzfx")
add_subdirectory("${CMAKE_CURRENT_SOURCE_DIR}/ext/lzo")
add_subdirectory("${CMAKE_CURRENT_SOURCE_DIR}/ext/etc")
find_package(glm QUIET)
find_package(OpenAL REQUIRED)
@ -100,7 +104,7 @@ include_directories(BEFORE
${ETC_INCLUDE_DIRS}
${MEIOSE_INCLUDE_DIR}
${LUA_INCLUDE_DIR}
${LZFX_INCLUDE_DIRS}
${LZO_INCLUDE_DIRS}
${ENET_INCLUDE_DIRS}
${GLFW_INCLUDE_DIRS}
${LIBSODIUM_INCLUDE_DIRS}
@ -166,7 +170,7 @@ target_link_libraries(diggler
${ETC_LIBRARIES}
${MEIOSE_LIBRARY}
${LUA_LIBRARY}
${LZFX_LIBRARIES}
${LZO_LIBRARIES}
${ENET_LIBRARIES}
${GLFW_LIBRARIES}
${LIBSODIUM_LIBRARIES}

14
ext/lzfx/CMakeLists.txt
View File

@ -1,14 +0,0 @@
cmake_minimum_required(VERSION 2.6)
project(LZFX C)
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -g")
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O3")
set(LZFX_INCLUDE_DIRS "${CMAKE_CURRENT_SOURCE_DIR}")
set(LZFX_INCLUDE_DIRS ${LZFX_INCLUDE_DIRS} PARENT_SCOPE)
include_directories(${LZFX_INCLUDE_DIRS})
add_library(lzfx STATIC lzfx.c)
set(LZFX_LIBRARIES lzfx PARENT_SCOPE)

26
ext/lzfx/LICENSE
View File

@ -1,26 +0,0 @@
LZFX is copyright (c) 2009 Andrew Collette and subject to the BSD license
(below). Original LZF copyright statement follows.
Copyright (c) 2000-2007 Marc Alexander Lehmann <schmorp@schmorp.de>
Redistribution and use in source and binary forms, with or without modifica-
tion, 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. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
CIAL, 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 OTH-
ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
OF THE POSSIBILITY OF SUCH DAMAGE.

66
ext/lzfx/README
View File

@ -1,66 +0,0 @@
README for the LZFX compression library 0.1
===========================================
Downloads, bug tracker, documentation are at Google Code:
http://lzfx.googlecode.com
Contact email: andrew dot collette at gmail dot com
What is LZFX?
=============
LZFX is a tiny, extremely fast compression library compatible with liblzf.
It was originally developed in support of the HDF5 for Python project
(h5py.googlecode.com).
The goal of LZFX is to provide high-speed compression of redundant data.
Compression ratios are therefore not as good as other compression utilities
like gzip or bzip. Until fast RLE encoders, LZFX uses dictionary-style
compression allowing it to deal with arbitrary repeated substrings, not just
runs of identical characters.
How do I use it?
================
The library consists of two files, lzfx.c and lzfx.h. Please read lzfx.h for
API information. Like LZF, you simply supply an input and output buffer.
There are no compression settings to adjust. You can link against liblzfx.a
or simply copy the two source files into your project. Since LZFX is BSD
licensed, these approaches are legal for both open-source and proprietary
applications.
Is there a compression utility?
===============================
Yes, an early version of a compression program (named "lzfx") is automatically
built along with the library. Simply run
$ lzfx <infile> <outfile> <c|d>
to compress or decompress data. The file format is not expected to change, but
until LZFX reaches 1.0 status you are STRONGLY ADVISED not to use this utility
on critical data.
Acknowledgements
================
LZFX is based on the LZF code base by Marc Lehmann. Changes include a new
API to make it easier to use with HDF5/h5py, code refactoring, and changes
to the decompressor to make it easier to determine the required size of a
decompression buffer. The LZFX compressor and decompressor are 100% compatible
with existing LZF streams, although the file format used by the "lzfx" demo
utility is different than that used by the "lzf" utility.
Known limitations
=================
* The lzfx utility is not full-featured yet
* You will need LZF installed to run "make check" as part of the test suite
checks for cross-compatibility
* A benchmark program is not yet available

368
ext/lzfx/lzfx.c
View File

@ -1,368 +0,0 @@
/*
* Copyright (c) 2009 Andrew Collette <andrew.collette at gmail.com>
* http://lzfx.googlecode.com
*
* Implements an LZF-compatible compressor/decompressor based on the liblzf
* codebase written by Marc Lehmann. This code is released under the BSD
* license. License and original copyright statement follow.
*
*
* Copyright (c) 2000-2008 Marc Alexander Lehmann <schmorp@schmorp.de>
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, 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. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
* CIAL, 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 OTH-
* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "lzfx.h"
#define LZFX_HSIZE (1 << (LZFX_HLOG))
#include <stdint.h>
/* We need this for memset */
#ifdef __cplusplus
# include <cstring>
#else
# include <string.h>
#endif
#if __GNUC__ >= 3 && !DISABLE_EXPECT
# define fx_expect_false(expr) __builtin_expect((expr) != 0, 0)
# define fx_expect_true(expr) __builtin_expect((expr) != 0, 1)
#else
# define fx_expect_false(expr) (expr)
# define fx_expect_true(expr) (expr)
#endif
typedef unsigned char u8;
typedef const u8 *LZSTATE[LZFX_HSIZE];
/* Define the hash function */
#define LZFX_FRST(p) (((p[0]) << 8) | p[1])
#define LZFX_NEXT(v,p) (((v) << 8) | p[2])
#define LZFX_IDX(h) ((( h >> (3*8 - LZFX_HLOG)) - h ) & (LZFX_HSIZE - 1))
/* These cannot be changed, as they are related to the compressed format. */
#define LZFX_MAX_LIT (1 << 5)
#define LZFX_MAX_OFF (1 << 13)
#define LZFX_MAX_REF ((1 << 8) + (1 << 3))
static
int lzfx_getsize(const void* ibuf, unsigned int ilen, unsigned int *olen);
/* Compressed format
There are two kinds of structures in LZF/LZFX: literal runs and back
references. The length of a literal run is encoded as L - 1, as it must
contain at least one byte. Literals are encoded as follows:
000LLLLL <L+1 bytes>
Back references are encoded as follows. The smallest possible encoded
length value is 1, as otherwise the control byte would be recognized as
a literal run. Since at least three bytes must match for a back reference
to be inserted, the length is encoded as L - 2 instead of L - 1. The
offset (distance to the desired data in the output buffer) is encoded as
o - 1, as all offsets are at least 1. The binary format is:
LLLooooo oooooooo for backrefs of real length < 9 (1 <= L < 7)
111ooooo LLLLLLLL oooooooo for backrefs of real length >= 9 (L > 7)
*/
#include <stdio.h>
int lzfx_compress(const void *const ibuf, const unsigned int ilen,
void *obuf, unsigned int *const olen){
/* Hash table; an array of u8*'s which point
to various locations in the input buffer */
const u8 *htab[LZFX_HSIZE];
const u8 **hslot; /* Pointer to entry in hash table */
unsigned int hval; /* Hash value generated by macros above */
const u8 *ref; /* Pointer to candidate match location in input */
const u8 *ip = (const u8 *)ibuf;
const u8 *const in_end = ip + ilen;
u8 *op = (u8 *)obuf;
const u8 *const out_end = (olen == NULL ? NULL : op + *olen);
int lit; /* # of bytes in current literal run */
#if defined (WIN32) && defined (_M_X64)
uint64_t off; /* workaround for missing POSIX compliance */
#else
unsigned long off;
#endif
if(olen == NULL) return LZFX_EARGS;
if(ibuf == NULL){
if(ilen != 0) return LZFX_EARGS;
*olen = 0;
return 0;
}
if(obuf == NULL){
if(olen != 0) return LZFX_EARGS;
return lzfx_getsize(ibuf, ilen, olen);
}
memset(htab, 0, sizeof(htab));
/* Start a literal run. Whenever we do this the output pointer is
advanced because the current byte will hold the encoded length. */
lit = 0; op++;
hval = LZFX_FRST(ip);
while(ip + 2 < in_end){ /* The NEXT macro reads 2 bytes ahead */
hval = LZFX_NEXT(hval, ip);
hslot = htab + LZFX_IDX(hval);
ref = *hslot; *hslot = ip;
if( ref < ip
&& (off = ip - ref - 1) < LZFX_MAX_OFF
&& ip + 4 < in_end /* Backref takes up to 3 bytes, so don't bother */
&& ref > (u8 *)ibuf
&& ref[0] == ip[0]
&& ref[1] == ip[1]
&& ref[2] == ip[2] ) {
unsigned int len = 3; /* We already know 3 bytes match */
const unsigned int maxlen = in_end - ip - 2 > LZFX_MAX_REF ?
LZFX_MAX_REF : in_end - ip - 2;
/* lit == 0: op + 3 must be < out_end (because we undo the run)
lit != 0: op + 3 + 1 must be < out_end */
if(fx_expect_false(op - !lit + 3 + 1 >= out_end))
return LZFX_ESIZE;
op [- lit - 1] = lit - 1; /* Terminate literal run */
op -= !lit; /* Undo run if length is zero */
/* Start checking at the fourth byte */
while (len < maxlen && ref[len] == ip[len])
len++;
len -= 2; /* We encode the length as #octets - 2 */
/* Format 1: [LLLooooo oooooooo] */
if (len < 7) {
*op++ = (off >> 8) + (len << 5);
*op++ = off;
/* Format 2: [111ooooo LLLLLLLL oooooooo] */
} else {
*op++ = (off >> 8) + (7 << 5);
*op++ = len - 7;
*op++ = off;
}
lit = 0; op++;
ip += len + 1; /* ip = initial ip + #octets -1 */
if (fx_expect_false (ip + 3 >= in_end)){
ip++; /* Code following expects exit at bottom of loop */
break;
}
hval = LZFX_FRST (ip);
hval = LZFX_NEXT (hval, ip);
htab[LZFX_IDX (hval)] = ip;
ip++; /* ip = initial ip + #octets */
} else {
/* Keep copying literal bytes */
if (fx_expect_false (op >= out_end)) return LZFX_ESIZE;
lit++; *op++ = *ip++;
if (fx_expect_false (lit == LZFX_MAX_LIT)) {
op [- lit - 1] = lit - 1; /* stop run */
lit = 0; op++; /* start run */
}
} /* if() found match in htab */
} /* while(ip < ilen -2) */
/* At most 3 bytes remain in input. We therefore need 4 bytes available
in the output buffer to store them (3 data + ctrl byte).*/
if (op + 3 > out_end) return LZFX_ESIZE;
while (ip < in_end) {
lit++; *op++ = *ip++;
if (fx_expect_false (lit == LZFX_MAX_LIT)){
op [- lit - 1] = lit - 1;
lit = 0; op++;
}
}
op [- lit - 1] = lit - 1;
op -= !lit;
*olen = op - (u8 *)obuf;
return 0;
}
/* Decompressor */
int lzfx_decompress(const void* ibuf, unsigned int ilen,
void* obuf, unsigned int *olen){
u8 const *ip = (const u8 *)ibuf;
u8 const *const in_end = ip + ilen;
u8 *op = (u8 *)obuf;
u8 const *const out_end = (olen == NULL ? NULL : op + *olen);
unsigned int remain_len = 0;
int rc;
if(olen == NULL) return LZFX_EARGS;
if(ibuf == NULL){
if(ilen != 0) return LZFX_EARGS;
*olen = 0;
return 0;
}
if(obuf == NULL){
if(olen != 0) return LZFX_EARGS;
return lzfx_getsize(ibuf, ilen, olen);
}
do {
unsigned int ctrl = *ip++;
/* Format 000LLLLL: a literal byte string follows, of length L+1 */
if(ctrl < (1 << 5)) {
ctrl++;
if(fx_expect_false(op + ctrl > out_end)){
--ip; /* Rewind to control byte */
goto guess;
}
if(fx_expect_false(ip + ctrl > in_end)) return LZFX_ECORRUPT;
do
*op++ = *ip++;
while(--ctrl);
/* Format #1 [LLLooooo oooooooo]: backref of length L+1+2
^^^^^ ^^^^^^^^
A B
#2 [111ooooo LLLLLLLL oooooooo] backref of length L+7+2
^^^^^ ^^^^^^^^
A B
In both cases the location of the backref is computed from the
remaining part of the data as follows:
location = op - A*256 - B - 1
*/
} else {
unsigned int len = (ctrl >> 5);
u8 *ref = op - ((ctrl & 0x1f) << 8) -1;
if(len==7) len += *ip++; /* i.e. format #2 */
len += 2; /* len is now #octets */
if(fx_expect_false(op + len > out_end)){
ip -= (len >= 9) ? 2 : 1; /* Rewind to control byte */
goto guess;
}
if(fx_expect_false(ip >= in_end)) return LZFX_ECORRUPT;
ref -= *ip++;
if(fx_expect_false(ref < (u8*)obuf)) return LZFX_ECORRUPT;
do
*op++ = *ref++;
while (--len);
}
} while (ip < in_end);
*olen = op - (u8 *)obuf;
return 0;
guess:
rc = lzfx_getsize(ip, ilen - (ip-(u8*)ibuf), &remain_len);
if(rc>=0) *olen = remain_len + (op - (u8*)obuf);
return rc;
}
/* Guess len. No parameters may be NULL; this is not checked. */
static
int lzfx_getsize(const void* ibuf, unsigned int ilen, unsigned int *olen){
u8 const *ip = (const u8 *)ibuf;
u8 const *const in_end = ip + ilen;
int tot_len = 0;
while (ip < in_end) {
unsigned int ctrl = *ip++;
if(ctrl < (1 << 5)) {
ctrl++;
if(ip + ctrl > in_end)
return LZFX_ECORRUPT;
tot_len += ctrl;
ip += ctrl;
} else {
unsigned int len = (ctrl >> 5);
if(len==7){ /* i.e. format #2 */
len += *ip++;
}
len += 2; /* len is now #octets */
if(ip >= in_end) return LZFX_ECORRUPT;
ip++; /* skip the ref byte */
tot_len += len;
}
}
*olen = tot_len;
return 0;
}

98
ext/lzfx/lzfx.h
View File

@ -1,98 +0,0 @@
/*
* Copyright (c) 2009 Andrew Collette <andrew.collette at gmail.com>
* http://lzfx.googlecode.com
*
* Implements an LZF-compatible compressor/decompressor based on the liblzf
* codebase written by Marc Lehmann. This code is released under the BSD
* license. License and original copyright statement follow.
*
*
* Copyright (c) 2000-2008 Marc Alexander Lehmann <schmorp@schmorp.de>
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, 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. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
* CIAL, 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 OTH-
* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef LZFX_H
#define LZFX_H
#ifdef __cplusplus
extern "C" {
#endif
/* Documented behavior, including function signatures and error codes,
is guaranteed to remain unchanged for releases with the same major
version number. Releases of the same major version are also able
to read each other's output, although the output itself is not
guaranteed to be byte-for-byte identical.
*/
#define LZFX_VERSION_MAJOR 0
#define LZFX_VERSION_MINOR 1
#define LZFX_VERSION_STRING "0.1"
/* Hashtable size (2**LZFX_HLOG entries) */
#ifndef LZFX_HLOG
# define LZFX_HLOG 16
#endif
/* Predefined errors. */
#define LZFX_ESIZE -1 /* Output buffer too small */
#define LZFX_ECORRUPT -2 /* Invalid data for decompression */
#define LZFX_EARGS -3 /* Arguments invalid (NULL) */
/* Buffer-to buffer compression.
Supply pre-allocated input and output buffers via ibuf and obuf, and
their size in bytes via ilen and olen. Buffers may not overlap.
On success, the function returns a non-negative value and the argument
olen contains the compressed size in bytes. On failure, a negative
value is returned and olen is not modified.
*/
int lzfx_compress(const void* ibuf, unsigned int ilen,
void* obuf, unsigned int *olen);
/* Buffer-to-buffer decompression.
Supply pre-allocated input and output buffers via ibuf and obuf, and
their size in bytes via ilen and olen. Buffers may not overlap.
On success, the function returns a non-negative value and the argument
olen contains the uncompressed size in bytes. On failure, a negative
value is returned.
If the failure code is LZFX_ESIZE, olen contains the minimum buffer size
required to hold the decompressed data. Otherwise, olen is not modified.
Supplying a zero *olen is a valid and supported strategy to determine the
required buffer size. This does not require decompression of the entire
stream and is consequently very fast. Argument obuf may be NULL in
this case only.
*/
int lzfx_decompress(const void* ibuf, unsigned int ilen,
void* obuf, unsigned int *olen);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif

14
ext/lzo/CMakeLists.txt Normal file
View File

@ -0,0 +1,14 @@
cmake_minimum_required(VERSION 2.6)
project(lzo C)
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -g")
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O3")
set(LZO_INCLUDE_DIRS "${CMAKE_CURRENT_SOURCE_DIR}")
set(LZO_INCLUDE_DIRS ${LZO_INCLUDE_DIRS} PARENT_SCOPE)
include_directories(${LZO_INCLUDE_DIRS})
add_library(lzo STATIC minilzo.c)
set(LZO_LIBRARIES lzo PARENT_SCOPE)

339
ext/lzo/COPYING Normal file
View File

@ -0,0 +1,339 @@
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.
Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.
Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope. The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.
You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:
a) You must cause the modified files to carry prominent notices
stating that you changed the files and the date of any change.
b) You must cause any work that you distribute or publish, that in
whole or in part contains or is derived from the Program or any
part thereof, to be licensed as a whole at no charge to all third
parties under the terms of this License.
c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
interactive use in the most ordinary way, to print or display an
announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
a warranty) and that users may redistribute the program under
these conditions, and telling the user how to view a copy of this
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works. But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.
Thus, it is not the intent of this section to claim rights or contest
your rights to work written entirely by you; rather, the intent is to
exercise the right to control the distribution of derivative or
collective works based on the Program.
In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.
3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:
a) Accompany it with the complete corresponding machine-readable
source code, which must be distributed under the terms of Sections
1 and 2 above on a medium customarily used for software interchange; or,
b) Accompany it with a written offer, valid for at least three
years, to give any third party, for a charge no more than your
cost of physically performing source distribution, a complete
machine-readable copy of the corresponding source code, to be
distributed under the terms of Sections 1 and 2 above on a medium
customarily used for software interchange; or,
c) Accompany it with the information you received as to the offer
to distribute corresponding source code. (This alternative is
allowed only for noncommercial distribution and only if you
received the program in object code or executable form with such
an offer, in accord with Subsection b above.)
The source code for a work means the preferred form of the work for
making modifications to it. For an executable work, complete source
code means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
control compilation and installation of the executable. However, as a
special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.
If distribution of executable or object code is made by offering
access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.
4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License. Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.
5. You are not required to accept this License, since you have not
signed it. However, nothing else grants you permission to modify or
distribute the Program or its derivative works. These actions are
prohibited by law if you do not accept this License. Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.
6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the
original licensor to copy, distribute or modify the Program subject to
these terms and conditions. You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to
this License.
7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot
distribute so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you
may not distribute the Program at all. For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.
If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
apply and the section as a whole is intended to apply in other
circumstances.
It is not the purpose of this section to induce you to infringe any
patents or other property right claims or to contest validity of any
such claims; this section has the sole purpose of protecting the
integrity of the free software distribution system, which is
implemented by public license practices. Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
impose that choice.
This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License incorporates
the limitation as if written in the body of this License.
9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the Program
specifies a version number of this License which applies to it and "any
later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation. If the Program does not specify a version number of
this License, you may choose any version ever published by the Free Software
Foundation.
10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
to ask for permission. For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we sometimes
make exceptions for this. Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.
NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

123
ext/lzo/README.LZO Normal file
View File

@ -0,0 +1,123 @@
============================================================================
miniLZO -- mini subset of the LZO real-time data compression library
============================================================================
Author : Markus Franz Xaver Johannes Oberhumer
<markus@oberhumer.com>
http://www.oberhumer.com/opensource/lzo/
Version : 2.10
Date : 01 Mar 2017
I've created miniLZO for projects where it is inconvenient to
include (or require) the full LZO source code just because you
want to add a little bit of data compression to your application.
miniLZO implements the LZO1X-1 compressor and both the standard and
safe LZO1X decompressor. Apart from fast compression it also useful
for situations where you want to use pre-compressed data files (which
must have been compressed with LZO1X-999).
miniLZO consists of one C source file and three header files:
minilzo.c
minilzo.h, lzoconf.h, lzodefs.h
To use miniLZO just copy these files into your source directory, add
minilzo.c to your Makefile and #include minilzo.h from your program.
Note: you also must distribute this file ('README.LZO') with your project.
minilzo.o compiles to about 6 KiB (using gcc or Visual C on an i386), and
the sources are about 30 KiB when packed with zip - so there's no more
excuse that your application doesn't support data compression :-)
For more information, documentation, example programs and other support
files (like Makefiles and build scripts) please download the full LZO
package from
http://www.oberhumer.com/opensource/lzo/
Have fun,
Markus
P.S. minilzo.c is generated automatically from the LZO sources and
therefore functionality is completely identical
Appendix A: building miniLZO
----------------------------
miniLZO is written such a way that it should compile and run
out-of-the-box on most machines.
If you are running on a very unusual architecture and lzo_init() fails then
you should first recompile with '-DLZO_DEBUG' to see what causes the failure.
The most probable case is something like 'sizeof(void *) != sizeof(size_t)'.
After identifying the problem you can compile by adding some defines
like '-DSIZEOF_VOID_P=8' to your Makefile.
The best solution is (of course) using Autoconf - if your project uses
Autoconf anyway just add '-DMINILZO_HAVE_CONFIG_H' to your compiler
flags when compiling minilzo.c. See the LZO distribution for an example
how to set up configure.ac.
Appendix B: list of public functions available in miniLZO
---------------------------------------------------------
Library initialization
lzo_init()
Compression
lzo1x_1_compress()
Decompression
lzo1x_decompress()
lzo1x_decompress_safe()
Checksum functions
lzo_adler32()
Version functions
lzo_version()
lzo_version_string()
lzo_version_date()
Portable (but slow) string functions
lzo_memcmp()
lzo_memcpy()
lzo_memmove()
lzo_memset()
Appendix C: suggested macros for 'configure.ac' when using Autoconf
-------------------------------------------------------------------
Checks for typedefs and structures
AC_CHECK_TYPE(ptrdiff_t,long)
AC_TYPE_SIZE_T
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(long long)
AC_CHECK_SIZEOF(__int64)
AC_CHECK_SIZEOF(void *)
AC_CHECK_SIZEOF(size_t)
AC_CHECK_SIZEOF(ptrdiff_t)
Checks for compiler characteristics
AC_C_CONST
Checks for library functions
AC_CHECK_FUNCS(memcmp memcpy memmove memset)
Appendix D: Copyright
---------------------
LZO and miniLZO are Copyright (C) 1996-2017 Markus Franz Xaver Oberhumer
All Rights Reserved.
LZO and miniLZO are distributed under the terms of the GNU General
Public License (GPL). See the file COPYING.
Special licenses for commercial and other applications which
are not willing to accept the GNU General Public License
are available by contacting the author.

453
ext/lzo/lzoconf.h Normal file
View File

@ -0,0 +1,453 @@
/* lzoconf.h -- configuration of the LZO data compression library
This file is part of the LZO real-time data compression library.
Copyright (C) 1996-2017 Markus Franz Xaver Johannes Oberhumer
All Rights Reserved.
The LZO library is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
The LZO library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with the LZO library; see the file COPYING.
If not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Markus F.X.J. Oberhumer
<markus@oberhumer.com>
http://www.oberhumer.com/opensource/lzo/
*/
#ifndef __LZOCONF_H_INCLUDED
#define __LZOCONF_H_INCLUDED 1
#define LZO_VERSION 0x20a0 /* 2.10 */
#define LZO_VERSION_STRING "2.10"
#define LZO_VERSION_DATE "Mar 01 2017"
/* internal Autoconf configuration file - only used when building LZO */
#if defined(LZO_HAVE_CONFIG_H)
# include <config.h>
#endif
#include <limits.h>
#include <stddef.h>
/***********************************************************************
// LZO requires a conforming <limits.h>
************************************************************************/
#if !defined(CHAR_BIT) || (CHAR_BIT != 8)
# error "invalid CHAR_BIT"
#endif
#if !defined(UCHAR_MAX) || !defined(USHRT_MAX) || !defined(UINT_MAX) || !defined(ULONG_MAX)
# error "check your compiler installation"
#endif
#if (USHRT_MAX < 1) || (UINT_MAX < 1) || (ULONG_MAX < 1)
# error "your limits.h macros are broken"
#endif
/* get OS and architecture defines */
#ifndef __LZODEFS_H_INCLUDED
#include <lzo/lzodefs.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/***********************************************************************
// some core defines
************************************************************************/
/* memory checkers */
#if !defined(__LZO_CHECKER)
# if defined(__BOUNDS_CHECKING_ON)
# define __LZO_CHECKER 1
# elif defined(__CHECKER__)
# define __LZO_CHECKER 1
# elif defined(__INSURE__)
# define __LZO_CHECKER 1
# elif defined(__PURIFY__)
# define __LZO_CHECKER 1
# endif
#endif
/***********************************************************************
// integral and pointer types
************************************************************************/
/* lzo_uint must match size_t */
#if !defined(LZO_UINT_MAX)
# if (LZO_ABI_LLP64)
# if (LZO_OS_WIN64)
typedef unsigned __int64 lzo_uint;
typedef __int64 lzo_int;
# define LZO_TYPEOF_LZO_INT LZO_TYPEOF___INT64
# else
typedef lzo_ullong_t lzo_uint;
typedef lzo_llong_t lzo_int;
# define LZO_TYPEOF_LZO_INT LZO_TYPEOF_LONG_LONG
# endif
# define LZO_SIZEOF_LZO_INT 8
# define LZO_UINT_MAX 0xffffffffffffffffull
# define LZO_INT_MAX 9223372036854775807LL
# define LZO_INT_MIN (-1LL - LZO_INT_MAX)
# elif (LZO_ABI_IP32L64) /* MIPS R5900 */
typedef unsigned int lzo_uint;
typedef int lzo_int;
# define LZO_SIZEOF_LZO_INT LZO_SIZEOF_INT
# define LZO_TYPEOF_LZO_INT LZO_TYPEOF_INT
# define LZO_UINT_MAX UINT_MAX
# define LZO_INT_MAX INT_MAX
# define LZO_INT_MIN INT_MIN
# elif (ULONG_MAX >= LZO_0xffffffffL)
typedef unsigned long lzo_uint;
typedef long lzo_int;
# define LZO_SIZEOF_LZO_INT LZO_SIZEOF_LONG
# define LZO_TYPEOF_LZO_INT LZO_TYPEOF_LONG
# define LZO_UINT_MAX ULONG_MAX
# define LZO_INT_MAX LONG_MAX
# define LZO_INT_MIN LONG_MIN
# else
# error "lzo_uint"
# endif
#endif
/* The larger type of lzo_uint and lzo_uint32_t. */
#if (LZO_SIZEOF_LZO_INT >= 4)
# define lzo_xint lzo_uint
#else
# define lzo_xint lzo_uint32_t
#endif
typedef int lzo_bool;
/* sanity checks */
LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(lzo_int) == LZO_SIZEOF_LZO_INT)
LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(lzo_uint) == LZO_SIZEOF_LZO_INT)
LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(lzo_xint) >= sizeof(lzo_uint))
LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(lzo_xint) >= sizeof(lzo_uint32_t))
#ifndef __LZO_MMODEL
#define __LZO_MMODEL /*empty*/
#endif
/* no typedef here because of const-pointer issues */
#define lzo_bytep unsigned char __LZO_MMODEL *
#define lzo_charp char __LZO_MMODEL *
#define lzo_voidp void __LZO_MMODEL *
#define lzo_shortp short __LZO_MMODEL *
#define lzo_ushortp unsigned short __LZO_MMODEL *
#define lzo_intp lzo_int __LZO_MMODEL *
#define lzo_uintp lzo_uint __LZO_MMODEL *
#define lzo_xintp lzo_xint __LZO_MMODEL *
#define lzo_voidpp lzo_voidp __LZO_MMODEL *
#define lzo_bytepp lzo_bytep __LZO_MMODEL *
#define lzo_int8_tp lzo_int8_t __LZO_MMODEL *
#define lzo_uint8_tp lzo_uint8_t __LZO_MMODEL *
#define lzo_int16_tp lzo_int16_t __LZO_MMODEL *
#define lzo_uint16_tp lzo_uint16_t __LZO_MMODEL *
#define lzo_int32_tp lzo_int32_t __LZO_MMODEL *
#define lzo_uint32_tp lzo_uint32_t __LZO_MMODEL *
#if defined(lzo_int64_t)
#define lzo_int64_tp lzo_int64_t __LZO_MMODEL *
#define lzo_uint64_tp lzo_uint64_t __LZO_MMODEL *
#endif
/* Older LZO versions used to support ancient systems and memory models
* such as 16-bit MSDOS with __huge pointers or Cray PVP, but these
* obsolete configurations are not supported any longer.
*/
#if defined(__LZO_MMODEL_HUGE)
#error "__LZO_MMODEL_HUGE memory model is unsupported"
#endif
#if (LZO_MM_PVP)
#error "LZO_MM_PVP memory model is unsupported"
#endif
#if (LZO_SIZEOF_INT < 4)
#error "LZO_SIZEOF_INT < 4 is unsupported"
#endif
#if (__LZO_UINTPTR_T_IS_POINTER)
#error "__LZO_UINTPTR_T_IS_POINTER is unsupported"
#endif
LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(int) >= 4)
LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(lzo_uint) >= 4)
/* Strange configurations where sizeof(lzo_uint) != sizeof(size_t) should
* work but have not received much testing lately, so be strict here.
*/
LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(lzo_uint) == sizeof(size_t))
LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(lzo_uint) == sizeof(ptrdiff_t))
LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(lzo_uint) == sizeof(lzo_uintptr_t))
LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(void *) == sizeof(lzo_uintptr_t))
LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(char *) == sizeof(lzo_uintptr_t))
LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(long *) == sizeof(lzo_uintptr_t))
LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(void *) == sizeof(lzo_voidp))
LZO_COMPILE_TIME_ASSERT_HEADER(sizeof(char *) == sizeof(lzo_bytep))
/***********************************************************************
// function types
************************************************************************/
/* name mangling */
#if !defined(__LZO_EXTERN_C)
# ifdef __cplusplus
# define __LZO_EXTERN_C extern "C"
# else
# define __LZO_EXTERN_C extern
# endif
#endif
/* calling convention */
#if !defined(__LZO_CDECL)
# define __LZO_CDECL __lzo_cdecl
#endif
/* DLL export information */
#if !defined(__LZO_EXPORT1)
# define __LZO_EXPORT1 /*empty*/
#endif
#if !defined(__LZO_EXPORT2)
# define __LZO_EXPORT2 /*empty*/
#endif
/* __cdecl calling convention for public C and assembly functions */
#if !defined(LZO_PUBLIC)
# define LZO_PUBLIC(r) __LZO_EXPORT1 r __LZO_EXPORT2 __LZO_CDECL
#endif
#if !defined(LZO_EXTERN)
# define LZO_EXTERN(r) __LZO_EXTERN_C LZO_PUBLIC(r)
#endif
#if !defined(LZO_PRIVATE)
# define LZO_PRIVATE(r) static r __LZO_CDECL
#endif
/* function types */
typedef int
(__LZO_CDECL *lzo_compress_t) ( const lzo_bytep src, lzo_uint src_len,
lzo_bytep dst, lzo_uintp dst_len,
lzo_voidp wrkmem );
typedef int
(__LZO_CDECL *lzo_decompress_t) ( const lzo_bytep src, lzo_uint src_len,
lzo_bytep dst, lzo_uintp dst_len,
lzo_voidp wrkmem );
typedef int
(__LZO_CDECL *lzo_optimize_t) ( lzo_bytep src, lzo_uint src_len,
lzo_bytep dst, lzo_uintp dst_len,
lzo_voidp wrkmem );
typedef int
(__LZO_CDECL *lzo_compress_dict_t)(const lzo_bytep src, lzo_uint src_len,
lzo_bytep dst, lzo_uintp dst_len,
lzo_voidp wrkmem,
const lzo_bytep dict, lzo_uint dict_len );
typedef int
(__LZO_CDECL *lzo_decompress_dict_t)(const lzo_bytep src, lzo_uint src_len,
lzo_bytep dst, lzo_uintp dst_len,
lzo_voidp wrkmem,
const lzo_bytep dict, lzo_uint dict_len );
/* Callback interface. Currently only the progress indicator ("nprogress")
* is used, but this may change in a future release. */
struct lzo_callback_t;
typedef struct lzo_callback_t lzo_callback_t;
#define lzo_callback_p lzo_callback_t __LZO_MMODEL *
/* malloc & free function types */
typedef lzo_voidp (__LZO_CDECL *lzo_alloc_func_t)
(lzo_callback_p self, lzo_uint items, lzo_uint size);
typedef void (__LZO_CDECL *lzo_free_func_t)
(lzo_callback_p self, lzo_voidp ptr);
/* a progress indicator callback function */
typedef void (__LZO_CDECL *lzo_progress_func_t)
(lzo_callback_p, lzo_uint, lzo_uint, int);
struct lzo_callback_t
{
/* custom allocators (set to 0 to disable) */
lzo_alloc_func_t nalloc; /* [not used right now] */
lzo_free_func_t nfree; /* [not used right now] */
/* a progress indicator callback function (set to 0 to disable) */
lzo_progress_func_t nprogress;
/* INFO: the first parameter "self" of the nalloc/nfree/nprogress
* callbacks points back to this struct, so you are free to store
* some extra info in the following variables. */
lzo_voidp user1;
lzo_xint user2;
lzo_xint user3;
};
/***********************************************************************
// error codes and prototypes
************************************************************************/
/* Error codes for the compression/decompression functions. Negative
* values are errors, positive values will be used for special but
* normal events.
*/
#define LZO_E_OK 0
#define LZO_E_ERROR (-1)
#define LZO_E_OUT_OF_MEMORY (-2) /* [lzo_alloc_func_t failure] */
#define LZO_E_NOT_COMPRESSIBLE (-3) /* [not used right now] */
#define LZO_E_INPUT_OVERRUN (-4)
#define LZO_E_OUTPUT_OVERRUN (-5)
#define LZO_E_LOOKBEHIND_OVERRUN (-6)
#define LZO_E_EOF_NOT_FOUND (-7)
#define LZO_E_INPUT_NOT_CONSUMED (-8)
#define LZO_E_NOT_YET_IMPLEMENTED (-9) /* [not used right now] */
#define LZO_E_INVALID_ARGUMENT (-10)
#define LZO_E_INVALID_ALIGNMENT (-11) /* pointer argument is not properly aligned */
#define LZO_E_OUTPUT_NOT_CONSUMED (-12)
#define LZO_E_INTERNAL_ERROR (-99)
#ifndef lzo_sizeof_dict_t
# define lzo_sizeof_dict_t ((unsigned)sizeof(lzo_bytep))
#endif
/* lzo_init() should be the first function you call.
* Check the return code !
*
* lzo_init() is a macro to allow checking that the library and the
* compiler's view of various types are consistent.
*/
#define lzo_init() __lzo_init_v2(LZO_VERSION,(int)sizeof(short),(int)sizeof(int),\
(int)sizeof(long),(int)sizeof(lzo_uint32_t),(int)sizeof(lzo_uint),\
(int)lzo_sizeof_dict_t,(int)sizeof(char *),(int)sizeof(lzo_voidp),\
(int)sizeof(lzo_callback_t))
LZO_EXTERN(int) __lzo_init_v2(unsigned,int,int,int,int,int,int,int,int,int);
/* version functions (useful for shared libraries) */
LZO_EXTERN(unsigned) lzo_version(void);
LZO_EXTERN(const char *) lzo_version_string(void);
LZO_EXTERN(const char *) lzo_version_date(void);
LZO_EXTERN(const lzo_charp) _lzo_version_string(void);
LZO_EXTERN(const lzo_charp) _lzo_version_date(void);
/* string functions */
LZO_EXTERN(int)
lzo_memcmp(const lzo_voidp a, const lzo_voidp b, lzo_uint len);
LZO_EXTERN(lzo_voidp)
lzo_memcpy(lzo_voidp dst, const lzo_voidp src, lzo_uint len);
LZO_EXTERN(lzo_voidp)
lzo_memmove(lzo_voidp dst, const lzo_voidp src, lzo_uint len);
LZO_EXTERN(lzo_voidp)
lzo_memset(lzo_voidp buf, int c, lzo_uint len);
/* checksum functions */
LZO_EXTERN(lzo_uint32_t)
lzo_adler32(lzo_uint32_t c, const lzo_bytep buf, lzo_uint len);
LZO_EXTERN(lzo_uint32_t)
lzo_crc32(lzo_uint32_t c, const lzo_bytep buf, lzo_uint len);
LZO_EXTERN(const lzo_uint32_tp)
lzo_get_crc32_table(void);
/* misc. */
LZO_EXTERN(int) _lzo_config_check(void);
typedef union {
lzo_voidp a00; lzo_bytep a01; lzo_uint a02; lzo_xint a03; lzo_uintptr_t a04;
void *a05; unsigned char *a06; unsigned long a07; size_t a08; ptrdiff_t a09;
#if defined(lzo_int64_t)
lzo_uint64_t a10;
#endif
} lzo_align_t;
/* align a char pointer on a boundary that is a multiple of 'size' */
LZO_EXTERN(unsigned) __lzo_align_gap(const lzo_voidp p, lzo_uint size);
#define LZO_PTR_ALIGN_UP(p,size) \
((p) + (lzo_uint) __lzo_align_gap((const lzo_voidp)(p),(lzo_uint)(size)))
/***********************************************************************
// deprecated macros - only for backward compatibility
************************************************************************/
/* deprecated - use 'lzo_bytep' instead of 'lzo_byte *' */
#define lzo_byte unsigned char
/* deprecated type names */
#define lzo_int32 lzo_int32_t
#define lzo_uint32 lzo_uint32_t
#define lzo_int32p lzo_int32_t __LZO_MMODEL *
#define lzo_uint32p lzo_uint32_t __LZO_MMODEL *
#define LZO_INT32_MAX LZO_INT32_C(2147483647)
#define LZO_UINT32_MAX LZO_UINT32_C(4294967295)
#if defined(lzo_int64_t)
#define lzo_int64 lzo_int64_t
#define lzo_uint64 lzo_uint64_t
#define lzo_int64p lzo_int64_t __LZO_MMODEL *
#define lzo_uint64p lzo_uint64_t __LZO_MMODEL *
#define LZO_INT64_MAX LZO_INT64_C(9223372036854775807)
#define LZO_UINT64_MAX LZO_UINT64_C(18446744073709551615)
#endif
/* deprecated types */
typedef union { lzo_bytep a; lzo_uint b; } __lzo_pu_u;
typedef union { lzo_bytep a; lzo_uint32_t b; } __lzo_pu32_u;
/* deprecated defines */
#if !defined(LZO_SIZEOF_LZO_UINT)
# define LZO_SIZEOF_LZO_UINT LZO_SIZEOF_LZO_INT
#endif
#if defined(LZO_CFG_COMPAT)
#define __LZOCONF_H 1
#if defined(LZO_ARCH_I086)
# define __LZO_i386 1
#elif defined(LZO_ARCH_I386)
# define __LZO_i386 1
#endif
#if defined(LZO_OS_DOS16)
# define __LZO_DOS 1
# define __LZO_DOS16 1
#elif defined(LZO_OS_DOS32)
# define __LZO_DOS 1
#elif defined(LZO_OS_WIN16)
# define __LZO_WIN 1
# define __LZO_WIN16 1
#elif defined(LZO_OS_WIN32)
# define __LZO_WIN 1
#endif
#define __LZO_CMODEL /*empty*/
#define __LZO_DMODEL /*empty*/
#define __LZO_ENTRY __LZO_CDECL
#define LZO_EXTERN_CDECL LZO_EXTERN
#define LZO_ALIGN LZO_PTR_ALIGN_UP
#define lzo_compress_asm_t lzo_compress_t
#define lzo_decompress_asm_t lzo_decompress_t
#endif /* LZO_CFG_COMPAT */
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* already included */
/* vim:set ts=4 sw=4 et: */

3268
ext/lzo/lzodefs.h Normal file
View File

File diff suppressed because it is too large Load Diff

6365
ext/lzo/minilzo.c Normal file
View File

File diff suppressed because it is too large Load Diff

106
ext/lzo/minilzo.h Normal file
View File

@ -0,0 +1,106 @@
/* minilzo.h -- mini subset of the LZO real-time data compression library
This file is part of the LZO real-time data compression library.
Copyright (C) 1996-2017 Markus Franz Xaver Johannes Oberhumer
All Rights Reserved.
The LZO library is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
The LZO library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with the LZO library; see the file COPYING.
If not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Markus F.X.J. Oberhumer
<markus@oberhumer.com>
http://www.oberhumer.com/opensource/lzo/
*/
/*
* NOTE:
* the full LZO package can be found at
* http://www.oberhumer.com/opensource/lzo/
*/
#ifndef __MINILZO_H_INCLUDED
#define __MINILZO_H_INCLUDED 1
#define MINILZO_VERSION 0x20a0 /* 2.10 */
#if defined(__LZOCONF_H_INCLUDED)
# error "you cannot use both LZO and miniLZO"
#endif
/* internal Autoconf configuration file - only used when building miniLZO */
#ifdef MINILZO_HAVE_CONFIG_H
# include <config.h>
#endif
#include <limits.h>
#include <stddef.h>
#ifndef __LZODEFS_H_INCLUDED
#include "lzodefs.h"
#endif
#undef LZO_HAVE_CONFIG_H
#include "lzoconf.h"
#if !defined(LZO_VERSION) || (LZO_VERSION != MINILZO_VERSION)
# error "version mismatch in header files"
#endif
#ifdef __cplusplus
extern "C" {
#endif
/***********************************************************************
//
************************************************************************/
/* Memory required for the wrkmem parameter.
* When the required size is 0, you can also pass a NULL pointer.
*/
#define LZO1X_MEM_COMPRESS LZO1X_1_MEM_COMPRESS
#define LZO1X_1_MEM_COMPRESS ((lzo_uint32_t) (16384L * lzo_sizeof_dict_t))
#define LZO1X_MEM_DECOMPRESS (0)
/* compression */
LZO_EXTERN(int)
lzo1x_1_compress ( const lzo_bytep src, lzo_uint src_len,
lzo_bytep dst, lzo_uintp dst_len,
lzo_voidp wrkmem );
/* decompression */
LZO_EXTERN(int)
lzo1x_decompress ( const lzo_bytep src, lzo_uint src_len,
lzo_bytep dst, lzo_uintp dst_len,
lzo_voidp wrkmem /* NOT USED */ );
/* safe decompression with overrun testing */
LZO_EXTERN(int)
lzo1x_decompress_safe ( const lzo_bytep src, lzo_uint src_len,
lzo_bytep dst, lzo_uintp dst_len,
lzo_voidp wrkmem /* NOT USED */ );
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* already included */
/* vim:set ts=4 sw=4 et: */

37
src/Chunk.cpp
View File

@ -1,6 +1,6 @@
#include "Chunk.hpp"
#include <lzfx.h>
#include <minilzo.h>
#include <MurmurHash2.h>
#include "content/Registry.hpp"
@ -22,7 +22,8 @@ namespace diggler {
using Util::Log;
using namespace Util::Logging::LogLevels;
static const char *TAG = "Chunk";
static constexpr char *TAG = "Chunk";
static constexpr uint32 HashSeed = 0xFA0C778C;
static constexpr int CXY = Chunk::CX*Chunk::CY;
static constexpr int I(int x, int y, int z) {
@ -112,9 +113,11 @@ void Chunk::calcMemUsage() {
#if CHUNK_INMEM_COMPRESS
void Chunk::imcCompress() {
if (mut.try_lock()) {
uint isize = AllocaSize, osize = isize;
std::unique_ptr<byte[]> workmem(new byte[LZO1X_MEM_COMPRESS]);
lzo_uint isize = AllocaSize, osize = isize;
imcData = std::malloc(osize);
lzfx_compress(data, isize, imcData, &osize);
lzo1x_1_compress(reinterpret_cast<unsigned char*>(data), isize,
reinterpret_cast<unsigned char*>(imcData), &osize, workmem.get());
imcData = std::realloc(imcData, osize);
imcSize = osize;
delete data;
@ -130,10 +133,11 @@ void Chunk::imcUncompress() {
return;
}
mut.lock();
uint isize = imcSize, osize = AllocaSize;
lzo_uint isize = imcSize, osize = AllocaSize;
imcUnusedSince = G->TimeMs;
data = new Data;
lzfx_decompress(imcData, isize, data, &osize);
lzo1x_decompress(reinterpret_cast<unsigned char*>(imcData), isize,
reinterpret_cast<unsigned char*>(data), &osize, nullptr);
std::free(imcData);
imcData = nullptr;
calcMemUsage();
@ -423,20 +427,22 @@ void Chunk::updateClient() {
}
void Chunk::write(io::OutStream &os) const {
const uint dataSize = Chunk::AllocaSize;
uint compressedSize;
const lzo_uint dataSize = Chunk::AllocaSize;
std::unique_ptr<byte[]> workmem(new byte[LZO1X_MEM_COMPRESS]);
byte *compressed = new byte[dataSize];
lzo_uint compressedSize = dataSize;
const void *chunkData = data;
compressedSize = dataSize;
int rz = lzfx_compress(chunkData, dataSize, compressed, &compressedSize);
int rz = lzo1x_1_compress(reinterpret_cast<const unsigned char*>(data), dataSize,
reinterpret_cast<unsigned char*>(compressed), &compressedSize, workmem.get());
Log(Verbose, TAG) << "Compressed " << dataSize << " to " << compressedSize << ", " <<
(compressedSize/double(dataSize)*100) << "%";
if (rz < 0) {
Log(Error, TAG) << "Failed compressing Chunk[" << wcx << ',' << wcy << ' ' << wcz << ']';
} else {
os.writeU16(compressedSize);
os.writeData(compressed, compressedSize);
}
os.writeU32(MurmurHash2(chunkData, dataSize, 0xFA0C778C));
os.writeU32(MurmurHash2(data, dataSize, HashSeed));
delete[] compressed;
}
@ -447,8 +453,9 @@ void Chunk::read(io::InStream &is) {
byte *compressedData = new byte[compressedSize];
is.readData(compressedData, compressedSize);
uint outLen = targetDataSize;
int rz = lzfx_decompress(compressedData, compressedSize, data, &outLen);
lzo_uint outLen = targetDataSize;
int rz = lzo1x_decompress(compressedData, compressedSize,
reinterpret_cast<unsigned char*>(data), &outLen, nullptr);
if (rz < 0 || outLen != targetDataSize) {
if (rz < 0) {
Log(Error, TAG) << "Chunk[" << wcx << ',' << wcy << ' ' << wcz <<
@ -458,7 +465,7 @@ void Chunk::read(io::InStream &is) {
"] has bad size " << outLen << '/' << targetDataSize;
}
}
if (is.readU32() != MurmurHash2(data, outLen, 0xFA0C778C)) {
if (is.readU32() != MurmurHash2(data, outLen, HashSeed)) {
Log(Error, TAG) << "Chunk[" << wcx << ',' << wcy << ' ' << wcz <<
"] decompression gave bad chunk content";
}

8
src/World.cpp
View File

@ -4,7 +4,7 @@
#include <glm/gtc/matrix_transform.hpp>
#include <lzfx.h>
#include <minilzo.h>
#include "CaveGenerator.hpp"
#include "Game.hpp"
@ -309,6 +309,8 @@ void World::refresh() {
}
void World::write(io::OutStream &msg) const {
// TODO
/*
const void *chunkData = nullptr;
const uint dataSize = Chunk::AllocaSize;
uint compressedSize;
@ -334,9 +336,12 @@ void World::write(io::OutStream &msg) const {
}
}
delete[] compressed;
*/
}
void World::read(io::InStream &M) {
// TODO
/*
int bytesRead = 0;
uint size = M.readU16();
for (uint n=0; n < size; ++n) {
@ -362,6 +367,7 @@ void World::read(io::InStream &M) {
delete[] compressedData;
}
Log(Debug, TAG) << "MapRead: read " << bytesRead;
*/
}
}