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This commit is contained in:
LeRatierBretonnien
2025-02-13 23:19:32 +01:00
parent 47dd1adb30
commit fa21d30994
4543 changed files with 680810 additions and 0 deletions
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135
node_modules/classic-level/deps/snappy/freebsd/config.h generated vendored Normal file
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/* config.h. Generated from config.h.in by configure. */
/* config.h.in. Generated from configure.ac by autoheader. */
/* Define if building universal (internal helper macro) */
/* #undef AC_APPLE_UNIVERSAL_BUILD */
/* Define to 1 if the compiler supports __builtin_ctz and friends. */
#define HAVE_BUILTIN_CTZ 1
/* Define to 1 if the compiler supports __builtin_expect. */
#define HAVE_BUILTIN_EXPECT 1
/* Define to 1 if you have the <byteswap.h> header file. */
/* #undef HAVE_BYTESWAP_H */
/* Define to 1 if you have the <dlfcn.h> header file. */
#define HAVE_DLFCN_H 1
/* Use the gflags package for command-line parsing. */
/* #undef HAVE_GFLAGS */
/* Defined when Google Test is available. */
/* #undef HAVE_GTEST */
/* Define to 1 if you have the <inttypes.h> header file. */
#define HAVE_INTTYPES_H 1
/* Define to 1 if you have the `fastlz' library (-lfastlz). */
/* #undef HAVE_LIBFASTLZ */
/* Define to 1 if you have the `lzf' library (-llzf). */
/* #undef HAVE_LIBLZF */
/* Define to 1 if you have the `lzo2' library (-llzo2). */
/* #undef HAVE_LIBLZO2 */
/* Define to 1 if you have the `quicklz' library (-lquicklz). */
/* #undef HAVE_LIBQUICKLZ */
/* Define to 1 if you have the `z' library (-lz). */
#define HAVE_LIBZ 1
/* Define to 1 if you have the <memory.h> header file. */
#define HAVE_MEMORY_H 1
/* Define to 1 if you have the <stddef.h> header file. */
#define HAVE_STDDEF_H 1
/* Define to 1 if you have the <stdint.h> header file. */
#define HAVE_STDINT_H 1
/* Define to 1 if you have the <stdlib.h> header file. */
#define HAVE_STDLIB_H 1
/* Define to 1 if you have the <strings.h> header file. */
#define HAVE_STRINGS_H 1
/* Define to 1 if you have the <string.h> header file. */
#define HAVE_STRING_H 1
/* Define to 1 if you have the <sys/byteswap.h> header file. */
/* #undef HAVE_SYS_BYTESWAP_H */
/* Define to 1 if you have the <sys/endian.h> header file. */
#define HAVE_SYS_ENDIAN_H 1
/* Define to 1 if you have the <sys/mman.h> header file. */
#define HAVE_SYS_MMAN_H 1
/* Define to 1 if you have the <sys/resource.h> header file. */
#define HAVE_SYS_RESOURCE_H 1
/* Define to 1 if you have the <sys/stat.h> header file. */
#define HAVE_SYS_STAT_H 1
/* Define to 1 if you have the <sys/time.h> header file. */
#define HAVE_SYS_TIME_H 1
/* Define to 1 if you have the <sys/types.h> header file. */
#define HAVE_SYS_TYPES_H 1
/* Define to 1 if you have the <sys/uio.h> header file. */
#define HAVE_SYS_UIO_H 1
/* Define to 1 if you have the <unistd.h> header file. */
#define HAVE_UNISTD_H 1
/* Define to 1 if you have the <windows.h> header file. */
/* #undef HAVE_WINDOWS_H */
/* Define to the sub-directory in which libtool stores uninstalled libraries.
*/
#define LT_OBJDIR ".libs/"
/* Name of package */
#define PACKAGE "snappy"
/* Define to the address where bug reports for this package should be sent. */
#define PACKAGE_BUGREPORT ""
/* Define to the full name of this package. */
#define PACKAGE_NAME "snappy"
/* Define to the full name and version of this package. */
#define PACKAGE_STRING "snappy 1.1.4"
/* Define to the one symbol short name of this package. */
#define PACKAGE_TARNAME "snappy"
/* Define to the version of this package. */
#define PACKAGE_VERSION "1.1.4"
/* Define to 1 if you have the ANSI C header files. */
#define STDC_HEADERS 1
/* Version number of package */
#define VERSION "1.1.4"
/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
significant byte first (like Motorola and SPARC, unlike Intel). */
#if defined AC_APPLE_UNIVERSAL_BUILD
# if defined __BIG_ENDIAN__
# define WORDS_BIGENDIAN 1
# endif
#else
# ifndef WORDS_BIGENDIAN
/* # undef WORDS_BIGENDIAN */
# endif
#endif
/* Define to `unsigned int' if <sys/types.h> does not define. */
/* #undef size_t */
/* Define to `int' if <sys/types.h> does not define. */
/* #undef ssize_t */

100
node_modules/classic-level/deps/snappy/freebsd/snappy-stubs-public.h generated vendored Normal file
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// Copyright 2011 Google Inc. All Rights Reserved.
// Author: sesse@google.com (Steinar H. Gunderson)
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
//
// Various type stubs for the open-source version of Snappy.
//
// This file cannot include config.h, as it is included from snappy.h,
// which is a public header. Instead, snappy-stubs-public.h is generated by
// from snappy-stubs-public.h.in at configure time.
#ifndef THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
#define THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
#if 1
#include <stdint.h>
#endif
#if 1
#include <stddef.h>
#endif
#if 1
#include <sys/uio.h>
#endif
#define SNAPPY_MAJOR 1
#define SNAPPY_MINOR 1
#define SNAPPY_PATCHLEVEL 4
#define SNAPPY_VERSION \
((SNAPPY_MAJOR << 16) | (SNAPPY_MINOR << 8) | SNAPPY_PATCHLEVEL)
#include <string>
namespace snappy {
#if 1
typedef int8_t int8;
typedef uint8_t uint8;
typedef int16_t int16;
typedef uint16_t uint16;
typedef int32_t int32;
typedef uint32_t uint32;
typedef int64_t int64;
typedef uint64_t uint64;
#else
typedef signed char int8;
typedef unsigned char uint8;
typedef short int16;
typedef unsigned short uint16;
typedef int int32;
typedef unsigned int uint32;
typedef long long int64;
typedef unsigned long long uint64;
#endif
typedef std::string string;
#ifndef DISALLOW_COPY_AND_ASSIGN
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
TypeName(const TypeName&); \
void operator=(const TypeName&)
#endif
#if !1
// Windows does not have an iovec type, yet the concept is universally useful.
// It is simple to define it ourselves, so we put it inside our own namespace.
struct iovec {
void* iov_base;
size_t iov_len;
};
#endif
} // namespace snappy
#endif // THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_

135
node_modules/classic-level/deps/snappy/linux/config.h generated vendored Normal file
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@@ -0,0 +1,135 @@
/* config.h. Generated from config.h.in by configure. */
/* config.h.in. Generated from configure.ac by autoheader. */
/* Define if building universal (internal helper macro) */
/* #undef AC_APPLE_UNIVERSAL_BUILD */
/* Define to 1 if the compiler supports __builtin_ctz and friends. */
#define HAVE_BUILTIN_CTZ 1
/* Define to 1 if the compiler supports __builtin_expect. */
#define HAVE_BUILTIN_EXPECT 1
/* Define to 1 if you have the <byteswap.h> header file. */
#define HAVE_BYTESWAP_H 1
/* Define to 1 if you have the <dlfcn.h> header file. */
#define HAVE_DLFCN_H 1
/* Use the gflags package for command-line parsing. */
/* #undef HAVE_GFLAGS */
/* Defined when Google Test is available. */
/* #undef HAVE_GTEST */
/* Define to 1 if you have the <inttypes.h> header file. */
#define HAVE_INTTYPES_H 1
/* Define to 1 if you have the `fastlz' library (-lfastlz). */
/* #undef HAVE_LIBFASTLZ */
/* Define to 1 if you have the `lzf' library (-llzf). */
/* #undef HAVE_LIBLZF */
/* Define to 1 if you have the `lzo2' library (-llzo2). */
/* #undef HAVE_LIBLZO2 */
/* Define to 1 if you have the `quicklz' library (-lquicklz). */
/* #undef HAVE_LIBQUICKLZ */
/* Define to 1 if you have the `z' library (-lz). */
#define HAVE_LIBZ 1
/* Define to 1 if you have the <memory.h> header file. */
#define HAVE_MEMORY_H 1
/* Define to 1 if you have the <stddef.h> header file. */
#define HAVE_STDDEF_H 1
/* Define to 1 if you have the <stdint.h> header file. */
#define HAVE_STDINT_H 1
/* Define to 1 if you have the <stdlib.h> header file. */
#define HAVE_STDLIB_H 1
/* Define to 1 if you have the <strings.h> header file. */
#define HAVE_STRINGS_H 1
/* Define to 1 if you have the <string.h> header file. */
#define HAVE_STRING_H 1
/* Define to 1 if you have the <sys/byteswap.h> header file. */
/* #undef HAVE_SYS_BYTESWAP_H */
/* Define to 1 if you have the <sys/endian.h> header file. */
/* #undef HAVE_SYS_ENDIAN_H */
/* Define to 1 if you have the <sys/mman.h> header file. */
#define HAVE_SYS_MMAN_H 1
/* Define to 1 if you have the <sys/resource.h> header file. */
#define HAVE_SYS_RESOURCE_H 1
/* Define to 1 if you have the <sys/stat.h> header file. */
#define HAVE_SYS_STAT_H 1
/* Define to 1 if you have the <sys/time.h> header file. */
#define HAVE_SYS_TIME_H 1
/* Define to 1 if you have the <sys/types.h> header file. */
#define HAVE_SYS_TYPES_H 1
/* Define to 1 if you have the <sys/uio.h> header file. */
#define HAVE_SYS_UIO_H 1
/* Define to 1 if you have the <unistd.h> header file. */
#define HAVE_UNISTD_H 1
/* Define to 1 if you have the <windows.h> header file. */
/* #undef HAVE_WINDOWS_H */
/* Define to the sub-directory in which libtool stores uninstalled libraries.
*/
#define LT_OBJDIR ".libs/"
/* Name of package */
#define PACKAGE "snappy"
/* Define to the address where bug reports for this package should be sent. */
#define PACKAGE_BUGREPORT ""
/* Define to the full name of this package. */
#define PACKAGE_NAME "snappy"
/* Define to the full name and version of this package. */
#define PACKAGE_STRING "snappy 1.1.4"
/* Define to the one symbol short name of this package. */
#define PACKAGE_TARNAME "snappy"
/* Define to the version of this package. */
#define PACKAGE_VERSION "1.1.4"
/* Define to 1 if you have the ANSI C header files. */
#define STDC_HEADERS 1
/* Version number of package */
#define VERSION "1.1.4"
/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
significant byte first (like Motorola and SPARC, unlike Intel). */
#if defined AC_APPLE_UNIVERSAL_BUILD
# if defined __BIG_ENDIAN__
# define WORDS_BIGENDIAN 1
# endif
#else
# ifndef WORDS_BIGENDIAN
/* # undef WORDS_BIGENDIAN */
# endif
#endif
/* Define to `unsigned int' if <sys/types.h> does not define. */
/* #undef size_t */
/* Define to `int' if <sys/types.h> does not define. */
/* #undef ssize_t */

100
node_modules/classic-level/deps/snappy/linux/snappy-stubs-public.h generated vendored Normal file
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@@ -0,0 +1,100 @@
// Copyright 2011 Google Inc. All Rights Reserved.
// Author: sesse@google.com (Steinar H. Gunderson)
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
//
// Various type stubs for the open-source version of Snappy.
//
// This file cannot include config.h, as it is included from snappy.h,
// which is a public header. Instead, snappy-stubs-public.h is generated by
// from snappy-stubs-public.h.in at configure time.
#ifndef THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
#define THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
#if 1
#include <stdint.h>
#endif
#if 1
#include <stddef.h>
#endif
#if 1
#include <sys/uio.h>
#endif
#define SNAPPY_MAJOR 1
#define SNAPPY_MINOR 1
#define SNAPPY_PATCHLEVEL 4
#define SNAPPY_VERSION \
((SNAPPY_MAJOR << 16) | (SNAPPY_MINOR << 8) | SNAPPY_PATCHLEVEL)
#include <string>
namespace snappy {
#if 1
typedef int8_t int8;
typedef uint8_t uint8;
typedef int16_t int16;
typedef uint16_t uint16;
typedef int32_t int32;
typedef uint32_t uint32;
typedef int64_t int64;
typedef uint64_t uint64;
#else
typedef signed char int8;
typedef unsigned char uint8;
typedef short int16;
typedef unsigned short uint16;
typedef int int32;
typedef unsigned int uint32;
typedef long long int64;
typedef unsigned long long uint64;
#endif
typedef std::string string;
#ifndef DISALLOW_COPY_AND_ASSIGN
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
TypeName(const TypeName&); \
void operator=(const TypeName&)
#endif
#if !1
// Windows does not have an iovec type, yet the concept is universally useful.
// It is simple to define it ourselves, so we put it inside our own namespace.
struct iovec {
void* iov_base;
size_t iov_len;
};
#endif
} // namespace snappy
#endif // THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_

137
node_modules/classic-level/deps/snappy/mac/config.h generated vendored Normal file
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@@ -0,0 +1,137 @@
/* config.h. Generated from config.h.in by configure. */
/* config.h.in. Generated from configure.ac by autoheader. */
/* Define if building universal (internal helper macro) */
/* #undef AC_APPLE_UNIVERSAL_BUILD */
/* Define to 1 if the compiler supports __builtin_ctz and friends. */
#define HAVE_BUILTIN_CTZ 1
/* Define to 1 if the compiler supports __builtin_expect. */
#define HAVE_BUILTIN_EXPECT 1
/* Define to 1 if you have the <byteswap.h> header file. */
/* #undef HAVE_BYTESWAP_H */
/* Define to 1 if you have the <dlfcn.h> header file. */
#define HAVE_DLFCN_H 1
/* Use the gflags package for command-line parsing. */
/* #undef HAVE_GFLAGS */
/* Defined when Google Test is available. */
/* #undef HAVE_GTEST */
/* Define to 1 if you have the <inttypes.h> header file. */
#define HAVE_INTTYPES_H 1
/* Define to 1 if you have the `fastlz' library (-lfastlz). */
/* #undef HAVE_LIBFASTLZ */
/* Define to 1 if you have the `lzf' library (-llzf). */
/* #undef HAVE_LIBLZF */
/* Define to 1 if you have the `lzo2' library (-llzo2). */
/* #undef HAVE_LIBLZO2 */
/* Define to 1 if you have the `quicklz' library (-lquicklz). */
/* #undef HAVE_LIBQUICKLZ */
/* Define to 1 if you have the `z' library (-lz). */
#define HAVE_LIBZ 1
/* Define to 1 if you have the <memory.h> header file. */
#define HAVE_MEMORY_H 1
/* Define to 1 if you have the <stddef.h> header file. */
#define HAVE_STDDEF_H 1
/* Define to 1 if you have the <stdint.h> header file. */
#define HAVE_STDINT_H 1
/* Define to 1 if you have the <stdlib.h> header file. */
#define HAVE_STDLIB_H 1
/* Define to 1 if you have the <strings.h> header file. */
#define HAVE_STRINGS_H 1
/* Define to 1 if you have the <string.h> header file. */
#define HAVE_STRING_H 1
/* Define to 1 if you have the <sys/byteswap.h> header file. */
/* #undef HAVE_SYS_BYTESWAP_H */
/* Define to 1 if you have the <sys/endian.h> header file. */
/* #undef HAVE_SYS_ENDIAN_H */
/* Define to 1 if you have the <sys/mman.h> header file. */
#define HAVE_SYS_MMAN_H 1
/* Define to 1 if you have the <sys/resource.h> header file. */
#define HAVE_SYS_RESOURCE_H 1
/* Define to 1 if you have the <sys/stat.h> header file. */
#define HAVE_SYS_STAT_H 1
/* Define to 1 if you have the <sys/time.h> header file. */
#define HAVE_SYS_TIME_H 1
/* Define to 1 if you have the <sys/types.h> header file. */
#define HAVE_SYS_TYPES_H 1
/* Define to 1 if you have the <sys/uio.h> header file. */
#define HAVE_SYS_UIO_H 1
/* Define to 1 if you have the <unistd.h> header file. */
#define HAVE_UNISTD_H 1
/* Define to 1 if you have the <windows.h> header file. */
/* #undef HAVE_WINDOWS_H */
/* Define to the sub-directory where libtool stores uninstalled libraries. */
#define LT_OBJDIR ".libs/"
/* Name of package */
#define PACKAGE "snappy"
/* Define to the address where bug reports for this package should be sent. */
#define PACKAGE_BUGREPORT ""
/* Define to the full name of this package. */
#define PACKAGE_NAME "snappy"
/* Define to the full name and version of this package. */
#define PACKAGE_STRING "snappy 1.1.4"
/* Define to the one symbol short name of this package. */
#define PACKAGE_TARNAME "snappy"
/* Define to the home page for this package. */
#define PACKAGE_URL ""
/* Define to the version of this package. */
#define PACKAGE_VERSION "1.1.4"
/* Define to 1 if you have the ANSI C header files. */
#define STDC_HEADERS 1
/* Version number of package */
#define VERSION "1.1.4"
/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
significant byte first (like Motorola and SPARC, unlike Intel). */
#if defined AC_APPLE_UNIVERSAL_BUILD
# if defined __BIG_ENDIAN__
# define WORDS_BIGENDIAN 1
# endif
#else
# ifndef WORDS_BIGENDIAN
/* # undef WORDS_BIGENDIAN */
# endif
#endif
/* Define to `unsigned int' if <sys/types.h> does not define. */
/* #undef size_t */
/* Define to `int' if <sys/types.h> does not define. */
/* #undef ssize_t */

100
node_modules/classic-level/deps/snappy/mac/snappy-stubs-public.h generated vendored Normal file
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@@ -0,0 +1,100 @@
// Copyright 2011 Google Inc. All Rights Reserved.
// Author: sesse@google.com (Steinar H. Gunderson)
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
//
// Various type stubs for the open-source version of Snappy.
//
// This file cannot include config.h, as it is included from snappy.h,
// which is a public header. Instead, snappy-stubs-public.h is generated by
// from snappy-stubs-public.h.in at configure time.
#ifndef THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
#define THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
#if 1
#include <stdint.h>
#endif
#if 1
#include <stddef.h>
#endif
#if 1
#include <sys/uio.h>
#endif
#define SNAPPY_MAJOR 1
#define SNAPPY_MINOR 1
#define SNAPPY_PATCHLEVEL 4
#define SNAPPY_VERSION \
((SNAPPY_MAJOR << 16) | (SNAPPY_MINOR << 8) | SNAPPY_PATCHLEVEL)
#include <string>
namespace snappy {
#if 1
typedef int8_t int8;
typedef uint8_t uint8;
typedef int16_t int16;
typedef uint16_t uint16;
typedef int32_t int32;
typedef uint32_t uint32;
typedef int64_t int64;
typedef uint64_t uint64;
#else
typedef signed char int8;
typedef unsigned char uint8;
typedef short int16;
typedef unsigned short uint16;
typedef int int32;
typedef unsigned int uint32;
typedef long long int64;
typedef unsigned long long uint64;
#endif
typedef std::string string;
#ifndef DISALLOW_COPY_AND_ASSIGN
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
TypeName(const TypeName&); \
void operator=(const TypeName&)
#endif
#if !1
// Windows does not have an iovec type, yet the concept is universally useful.
// It is simple to define it ourselves, so we put it inside our own namespace.
struct iovec {
void* iov_base;
size_t iov_len;
};
#endif
} // namespace snappy
#endif // THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_

135
node_modules/classic-level/deps/snappy/openbsd/config.h generated vendored Normal file
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@@ -0,0 +1,135 @@
/* config.h. Generated from config.h.in by configure. */
/* config.h.in. Generated from configure.ac by autoheader. */
/* Define if building universal (internal helper macro) */
/* #undef AC_APPLE_UNIVERSAL_BUILD */
/* Define to 1 if the compiler supports __builtin_ctz and friends. */
#define HAVE_BUILTIN_CTZ 1
/* Define to 1 if the compiler supports __builtin_expect. */
#define HAVE_BUILTIN_EXPECT 1
/* Define to 1 if you have the <byteswap.h> header file. */
/* #undef HAVE_BYTESWAP_H */
/* Define to 1 if you have the <dlfcn.h> header file. */
#define HAVE_DLFCN_H 1
/* Use the gflags package for command-line parsing. */
/* #undef HAVE_GFLAGS */
/* Defined when Google Test is available. */
/* #undef HAVE_GTEST */
/* Define to 1 if you have the <inttypes.h> header file. */
#define HAVE_INTTYPES_H 1
/* Define to 1 if you have the `fastlz' library (-lfastlz). */
/* #undef HAVE_LIBFASTLZ */
/* Define to 1 if you have the `lzf' library (-llzf). */
/* #undef HAVE_LIBLZF */
/* Define to 1 if you have the `lzo2' library (-llzo2). */
/* #undef HAVE_LIBLZO2 */
/* Define to 1 if you have the `quicklz' library (-lquicklz). */
/* #undef HAVE_LIBQUICKLZ */
/* Define to 1 if you have the `z' library (-lz). */
#define HAVE_LIBZ 1
/* Define to 1 if you have the <memory.h> header file. */
#define HAVE_MEMORY_H 1
/* Define to 1 if you have the <stddef.h> header file. */
#define HAVE_STDDEF_H 1
/* Define to 1 if you have the <stdint.h> header file. */
#define HAVE_STDINT_H 1
/* Define to 1 if you have the <stdlib.h> header file. */
#define HAVE_STDLIB_H 1
/* Define to 1 if you have the <strings.h> header file. */
#define HAVE_STRINGS_H 1
/* Define to 1 if you have the <string.h> header file. */
#define HAVE_STRING_H 1
/* Define to 1 if you have the <sys/byteswap.h> header file. */
/* #undef HAVE_SYS_BYTESWAP_H */
/* Define to 1 if you have the <sys/endian.h> header file. */
#define HAVE_SYS_ENDIAN_H 1
/* Define to 1 if you have the <sys/mman.h> header file. */
#define HAVE_SYS_MMAN_H 1
/* Define to 1 if you have the <sys/resource.h> header file. */
#define HAVE_SYS_RESOURCE_H 1
/* Define to 1 if you have the <sys/stat.h> header file. */
#define HAVE_SYS_STAT_H 1
/* Define to 1 if you have the <sys/time.h> header file. */
#define HAVE_SYS_TIME_H 1
/* Define to 1 if you have the <sys/types.h> header file. */
#define HAVE_SYS_TYPES_H 1
/* Define to 1 if you have the <sys/uio.h> header file. */
#define HAVE_SYS_UIO_H 1
/* Define to 1 if you have the <unistd.h> header file. */
#define HAVE_UNISTD_H 1
/* Define to 1 if you have the <windows.h> header file. */
/* #undef HAVE_WINDOWS_H */
/* Define to the sub-directory in which libtool stores uninstalled libraries.
*/
#define LT_OBJDIR ".libs/"
/* Name of package */
#define PACKAGE "snappy"
/* Define to the address where bug reports for this package should be sent. */
#define PACKAGE_BUGREPORT ""
/* Define to the full name of this package. */
#define PACKAGE_NAME "snappy"
/* Define to the full name and version of this package. */
#define PACKAGE_STRING "snappy 1.1.4"
/* Define to the one symbol short name of this package. */
#define PACKAGE_TARNAME "snappy"
/* Define to the version of this package. */
#define PACKAGE_VERSION "1.1.4"
/* Define to 1 if you have the ANSI C header files. */
#define STDC_HEADERS 1
/* Version number of package */
#define VERSION "1.1.4"
/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
significant byte first (like Motorola and SPARC, unlike Intel). */
#if defined AC_APPLE_UNIVERSAL_BUILD
# if defined __BIG_ENDIAN__
# define WORDS_BIGENDIAN 1
# endif
#else
# ifndef WORDS_BIGENDIAN
/* # undef WORDS_BIGENDIAN */
# endif
#endif
/* Define to `unsigned int' if <sys/types.h> does not define. */
/* #undef size_t */
/* Define to `int' if <sys/types.h> does not define. */
/* #undef ssize_t */

100
node_modules/classic-level/deps/snappy/openbsd/snappy-stubs-public.h generated vendored Normal file
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// Copyright 2011 Google Inc. All Rights Reserved.
// Author: sesse@google.com (Steinar H. Gunderson)
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
//
// Various type stubs for the open-source version of Snappy.
//
// This file cannot include config.h, as it is included from snappy.h,
// which is a public header. Instead, snappy-stubs-public.h is generated by
// from snappy-stubs-public.h.in at configure time.
#ifndef THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
#define THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
#if 1
#include <stdint.h>
#endif
#if 1
#include <stddef.h>
#endif
#if 1
#include <sys/uio.h>
#endif
#define SNAPPY_MAJOR 1
#define SNAPPY_MINOR 1
#define SNAPPY_PATCHLEVEL 4
#define SNAPPY_VERSION \
((SNAPPY_MAJOR << 16) | (SNAPPY_MINOR << 8) | SNAPPY_PATCHLEVEL)
#include <string>
namespace snappy {
#if 1
typedef int8_t int8;
typedef uint8_t uint8;
typedef int16_t int16;
typedef uint16_t uint16;
typedef int32_t int32;
typedef uint32_t uint32;
typedef int64_t int64;
typedef uint64_t uint64;
#else
typedef signed char int8;
typedef unsigned char uint8;
typedef short int16;
typedef unsigned short uint16;
typedef int int32;
typedef unsigned int uint32;
typedef long long int64;
typedef unsigned long long uint64;
#endif
typedef std::string string;
#ifndef DISALLOW_COPY_AND_ASSIGN
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
TypeName(const TypeName&); \
void operator=(const TypeName&)
#endif
#if !1
// Windows does not have an iovec type, yet the concept is universally useful.
// It is simple to define it ourselves, so we put it inside our own namespace.
struct iovec {
void* iov_base;
size_t iov_len;
};
#endif
} // namespace snappy
#endif // THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_

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{
"variables": {
'openssl_fips': ''
},
"targets": [{
"variables": {
"conditions": [
["OS=='linux'", {"os_include": "linux"}],
["OS=='android'", {"os_include": "linux"}],
["OS=='ios'", {"os_include": "mac"}],
["OS=='mac'", {"os_include": "mac"}],
["OS=='solaris'", {"os_include": "solaris"}],
["OS=='win'", {"os_include": "win32"}],
["OS=='freebsd'", {"os_include": "freebsd"}],
["OS=='openbsd'", {"os_include": "openbsd"}]
]
},
"target_name": "snappy",
"type": "static_library",
"standalone_static_library": 1,
"include_dirs": [
"<(os_include)",
"snappy"
],
"direct_dependent_settings": {
"include_dirs": [
"<(os_include)",
"snappy"
]
},
"defines": [
"HAVE_CONFIG_H=1"
],
"conditions": [
["OS == 'win'", {
"defines": [
"_HAS_EXCEPTIONS=0"
],
"msvs_settings": {
"VCCLCompilerTool": {
"RuntimeTypeInfo": "false",
"EnableFunctionLevelLinking": "true",
"ExceptionHandling": "2",
"DisableSpecificWarnings": [ "4355", "4530" ,"4267", "4244", "4506", "4018" ]
}
}
}],
["OS == 'linux'", {
"cflags": [
"-Wno-sign-compare",
"-Wno-unused-function"
],
"cflags!": [ "-fno-tree-vrp" ]
}],
["OS == 'freebsd'", {
"cflags": [
"-Wno-sign-compare",
"-Wno-unused-function"
]
}],
["OS == 'openbsd'", {
"cflags": [
"-Wno-sign-compare",
"-Wno-unused-function"
]
}],
["OS == 'solaris'", {
"cflags": [
"-Wno-sign-compare",
"-Wno-unused-function"
]
}],
["OS == 'mac'", {
"xcode_settings": {
"WARNING_CFLAGS": [
"-Wno-sign-compare",
"-Wno-unused-function"
],
# Set minimum target version because we're building on newer
"MACOSX_DEPLOYMENT_TARGET": "10.7",
# Build universal binary to support M1 (Apple silicon)
"OTHER_CFLAGS": [
"-arch x86_64",
"-arch arm64"
]
}
}],
["OS == 'android'", {
"cflags": [
"-Wno-sign-compare",
"-fPIC",
"-Wno-unused-function"
],
"cflags!": [
"-fno-tree-vrp",
"-mfloat-abi=hard",
"-fPIE"
]
}],
["target_arch == 'arm'", {
"cflags": [
"-mfloat-abi=hard"
]
}]
],
"sources": [
"snappy/snappy-internal.h",
"snappy/snappy-sinksource.cc",
"snappy/snappy-sinksource.h",
"snappy/snappy-stubs-internal.cc",
"snappy/snappy-stubs-internal.h",
"snappy/snappy.cc",
"snappy/snappy.h"
]
}]
}

54
node_modules/classic-level/deps/snappy/snappy/COPYING generated vendored Normal file
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Copyright 2011, Google Inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* 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.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"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 COPYRIGHT
OWNER OR CONTRIBUTORS 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.
===
Some of the benchmark data in testdata/ is licensed differently:
- fireworks.jpeg is Copyright 2013 Steinar H. Gunderson, and
is licensed under the Creative Commons Attribution 3.0 license
(CC-BY-3.0). See https://creativecommons.org/licenses/by/3.0/
for more information.
- kppkn.gtb is taken from the Gaviota chess tablebase set, and
is licensed under the MIT License. See
https://sites.google.com/site/gaviotachessengine/Home/endgame-tablebases-1
for more information.
- paper-100k.pdf is an excerpt (bytes 92160 to 194560) from the paper
“Combinatorial Modeling of Chromatin Features Quantitatively Predicts DNA
Replication Timing in _Drosophila_” by Federico Comoglio and Renato Paro,
which is licensed under the CC-BY license. See
http://www.ploscompbiol.org/static/license for more ifnormation.
- alice29.txt, asyoulik.txt, plrabn12.txt and lcet10.txt are from Project
Gutenberg. The first three have expired copyrights and are in the public
domain; the latter does not have expired copyright, but is still in the
public domain according to the license information
(http://www.gutenberg.org/ebooks/53).

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Snappy, a fast compressor/decompressor.
Introduction
============
Snappy is a compression/decompression library. It does not aim for maximum
compression, or compatibility with any other compression library; instead,
it aims for very high speeds and reasonable compression. For instance,
compared to the fastest mode of zlib, Snappy is an order of magnitude faster
for most inputs, but the resulting compressed files are anywhere from 20% to
100% bigger. (For more information, see "Performance", below.)
Snappy has the following properties:
* Fast: Compression speeds at 250 MB/sec and beyond, with no assembler code.
See "Performance" below.
* Stable: Over the last few years, Snappy has compressed and decompressed
petabytes of data in Google's production environment. The Snappy bitstream
format is stable and will not change between versions.
* Robust: The Snappy decompressor is designed not to crash in the face of
corrupted or malicious input.
* Free and open source software: Snappy is licensed under a BSD-type license.
For more information, see the included COPYING file.
Snappy has previously been called "Zippy" in some Google presentations
and the like.
Performance
===========
Snappy is intended to be fast. On a single core of a Core i7 processor
in 64-bit mode, it compresses at about 250 MB/sec or more and decompresses at
about 500 MB/sec or more. (These numbers are for the slowest inputs in our
benchmark suite; others are much faster.) In our tests, Snappy usually
is faster than algorithms in the same class (e.g. LZO, LZF, QuickLZ,
etc.) while achieving comparable compression ratios.
Typical compression ratios (based on the benchmark suite) are about 1.5-1.7x
for plain text, about 2-4x for HTML, and of course 1.0x for JPEGs, PNGs and
other already-compressed data. Similar numbers for zlib in its fastest mode
are 2.6-2.8x, 3-7x and 1.0x, respectively. More sophisticated algorithms are
capable of achieving yet higher compression rates, although usually at the
expense of speed. Of course, compression ratio will vary significantly with
the input.
Although Snappy should be fairly portable, it is primarily optimized
for 64-bit x86-compatible processors, and may run slower in other environments.
In particular:
- Snappy uses 64-bit operations in several places to process more data at
once than would otherwise be possible.
- Snappy assumes unaligned 32- and 64-bit loads and stores are cheap.
On some platforms, these must be emulated with single-byte loads
and stores, which is much slower.
- Snappy assumes little-endian throughout, and needs to byte-swap data in
several places if running on a big-endian platform.
Experience has shown that even heavily tuned code can be improved.
Performance optimizations, whether for 64-bit x86 or other platforms,
are of course most welcome; see "Contact", below.
Building
========
CMake is supported and autotools will soon be deprecated.
You need CMake 3.4 or above to build:
mkdir build
cd build && cmake ../ && make
Usage
=====
Note that Snappy, both the implementation and the main interface,
is written in C++. However, several third-party bindings to other languages
are available; see the home page at http://google.github.io/snappy/
for more information. Also, if you want to use Snappy from C code, you can
use the included C bindings in snappy-c.h.
To use Snappy from your own C++ program, include the file "snappy.h" from
your calling file, and link against the compiled library.
There are many ways to call Snappy, but the simplest possible is
snappy::Compress(input.data(), input.size(), &output);
and similarly
snappy::Uncompress(input.data(), input.size(), &output);
where "input" and "output" are both instances of std::string.
There are other interfaces that are more flexible in various ways, including
support for custom (non-array) input sources. See the header file for more
information.
Tests and benchmarks
====================
When you compile Snappy, snappy_unittest is compiled in addition to the
library itself. You do not need it to use the compressor from your own library,
but it contains several useful components for Snappy development.
First of all, it contains unit tests, verifying correctness on your machine in
various scenarios. If you want to change or optimize Snappy, please run the
tests to verify you have not broken anything. Note that if you have the
Google Test library installed, unit test behavior (especially failures) will be
significantly more user-friendly. You can find Google Test at
http://github.com/google/googletest
You probably also want the gflags library for handling of command-line flags;
you can find it at
http://gflags.github.io/gflags/
In addition to the unit tests, snappy contains microbenchmarks used to
tune compression and decompression performance. These are automatically run
before the unit tests, but you can disable them using the flag
--run_microbenchmarks=false if you have gflags installed (otherwise you will
need to edit the source).
Finally, snappy can benchmark Snappy against a few other compression libraries
(zlib, LZO, LZF, and QuickLZ), if they were detected at configure time.
To benchmark using a given file, give the compression algorithm you want to test
Snappy against (e.g. --zlib) and then a list of one or more file names on the
command line. The testdata/ directory contains the files used by the
microbenchmark, which should provide a reasonably balanced starting point for
benchmarking. (Note that baddata[1-3].snappy are not intended as benchmarks; they
are used to verify correctness in the presence of corrupted data in the unit
test.)
Contact
=======
Snappy is distributed through GitHub. For the latest version, a bug tracker,
and other information, see
http://google.github.io/snappy/
or the repository at
https://github.com/google/snappy

1
node_modules/classic-level/deps/snappy/snappy/cmake/SnappyConfig.cmake generated vendored Normal file
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include("${CMAKE_CURRENT_LIST_DIR}/SnappyTargets.cmake")

62
node_modules/classic-level/deps/snappy/snappy/cmake/config.h.in generated vendored Normal file
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#ifndef THIRD_PARTY_SNAPPY_OPENSOURCE_CMAKE_CONFIG_H_
#define THIRD_PARTY_SNAPPY_OPENSOURCE_CMAKE_CONFIG_H_
/* Define to 1 if the compiler supports __builtin_ctz and friends. */
#cmakedefine HAVE_BUILTIN_CTZ 1
/* Define to 1 if the compiler supports __builtin_expect. */
#cmakedefine HAVE_BUILTIN_EXPECT 1
/* Define to 1 if you have the <byteswap.h> header file. */
#cmakedefine HAVE_BYTESWAP_H 1
/* Define to 1 if you have a definition for mmap() in <sys/mman.h>. */
#cmakedefine HAVE_FUNC_MMAP 1
/* Define to 1 if you have a definition for sysconf() in <unistd.h>. */
#cmakedefine HAVE_FUNC_SYSCONF 1
/* Define to 1 to use the gflags package for command-line parsing. */
#cmakedefine HAVE_GFLAGS 1
/* Define to 1 if you have Google Test. */
#cmakedefine HAVE_GTEST 1
/* Define to 1 if you have the `lzo2' library (-llzo2). */
#cmakedefine HAVE_LIBLZO2 1
/* Define to 1 if you have the `z' library (-lz). */
#cmakedefine HAVE_LIBZ 1
/* Define to 1 if you have the <stddef.h> header file. */
#cmakedefine HAVE_STDDEF_H 1
/* Define to 1 if you have the <stdint.h> header file. */
#cmakedefine HAVE_STDINT_H 1
/* Define to 1 if you have the <sys/endian.h> header file. */
#cmakedefine HAVE_SYS_ENDIAN_H 1
/* Define to 1 if you have the <sys/mman.h> header file. */
#cmakedefine HAVE_SYS_MMAN_H 1
/* Define to 1 if you have the <sys/resource.h> header file. */
#cmakedefine HAVE_SYS_RESOURCE_H 1
/* Define to 1 if you have the <sys/time.h> header file. */
#cmakedefine HAVE_SYS_TIME_H 1
/* Define to 1 if you have the <sys/uio.h> header file. */
#cmakedefine HAVE_SYS_UIO_H 1
/* Define to 1 if you have the <unistd.h> header file. */
#cmakedefine HAVE_UNISTD_H 1
/* Define to 1 if you have the <windows.h> header file. */
#cmakedefine HAVE_WINDOWS_H 1
/* Define to 1 if your processor stores words with the most significant byte
first (like Motorola and SPARC, unlike Intel and VAX). */
#cmakedefine SNAPPY_IS_BIG_ENDIAN 1
#endif // THIRD_PARTY_SNAPPY_OPENSOURCE_CMAKE_CONFIG_H_

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node_modules/classic-level/deps/snappy/snappy/snappy-c.cc generated vendored Normal file
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// Copyright 2011 Martin Gieseking <martin.gieseking@uos.de>.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
#include "snappy.h"
#include "snappy-c.h"
extern "C" {
snappy_status snappy_compress(const char* input,
size_t input_length,
char* compressed,
size_t *compressed_length) {
if (*compressed_length < snappy_max_compressed_length(input_length)) {
return SNAPPY_BUFFER_TOO_SMALL;
}
snappy::RawCompress(input, input_length, compressed, compressed_length);
return SNAPPY_OK;
}
snappy_status snappy_uncompress(const char* compressed,
size_t compressed_length,
char* uncompressed,
size_t* uncompressed_length) {
size_t real_uncompressed_length;
if (!snappy::GetUncompressedLength(compressed,
compressed_length,
&real_uncompressed_length)) {
return SNAPPY_INVALID_INPUT;
}
if (*uncompressed_length < real_uncompressed_length) {
return SNAPPY_BUFFER_TOO_SMALL;
}
if (!snappy::RawUncompress(compressed, compressed_length, uncompressed)) {
return SNAPPY_INVALID_INPUT;
}
*uncompressed_length = real_uncompressed_length;
return SNAPPY_OK;
}
size_t snappy_max_compressed_length(size_t source_length) {
return snappy::MaxCompressedLength(source_length);
}
snappy_status snappy_uncompressed_length(const char *compressed,
size_t compressed_length,
size_t *result) {
if (snappy::GetUncompressedLength(compressed,
compressed_length,
result)) {
return SNAPPY_OK;
} else {
return SNAPPY_INVALID_INPUT;
}
}
snappy_status snappy_validate_compressed_buffer(const char *compressed,
size_t compressed_length) {
if (snappy::IsValidCompressedBuffer(compressed, compressed_length)) {
return SNAPPY_OK;
} else {
return SNAPPY_INVALID_INPUT;
}
}
} // extern "C"

138
node_modules/classic-level/deps/snappy/snappy/snappy-c.h generated vendored Normal file
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/*
* Copyright 2011 Martin Gieseking <martin.gieseking@uos.de>.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT
* OWNER OR CONTRIBUTORS 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.
*
* Plain C interface (a wrapper around the C++ implementation).
*/
#ifndef THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_C_H_
#define THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_C_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <stddef.h>
/*
* Return values; see the documentation for each function to know
* what each can return.
*/
typedef enum {
SNAPPY_OK = 0,
SNAPPY_INVALID_INPUT = 1,
SNAPPY_BUFFER_TOO_SMALL = 2
} snappy_status;
/*
* Takes the data stored in "input[0..input_length-1]" and stores
* it in the array pointed to by "compressed".
*
* <compressed_length> signals the space available in "compressed".
* If it is not at least equal to "snappy_max_compressed_length(input_length)",
* SNAPPY_BUFFER_TOO_SMALL is returned. After successful compression,
* <compressed_length> contains the true length of the compressed output,
* and SNAPPY_OK is returned.
*
* Example:
* size_t output_length = snappy_max_compressed_length(input_length);
* char* output = (char*)malloc(output_length);
* if (snappy_compress(input, input_length, output, &output_length)
* == SNAPPY_OK) {
* ... Process(output, output_length) ...
* }
* free(output);
*/
snappy_status snappy_compress(const char* input,
size_t input_length,
char* compressed,
size_t* compressed_length);
/*
* Given data in "compressed[0..compressed_length-1]" generated by
* calling the snappy_compress routine, this routine stores
* the uncompressed data to
* uncompressed[0..uncompressed_length-1].
* Returns failure (a value not equal to SNAPPY_OK) if the message
* is corrupted and could not be decrypted.
*
* <uncompressed_length> signals the space available in "uncompressed".
* If it is not at least equal to the value returned by
* snappy_uncompressed_length for this stream, SNAPPY_BUFFER_TOO_SMALL
* is returned. After successful decompression, <uncompressed_length>
* contains the true length of the decompressed output.
*
* Example:
* size_t output_length;
* if (snappy_uncompressed_length(input, input_length, &output_length)
* != SNAPPY_OK) {
* ... fail ...
* }
* char* output = (char*)malloc(output_length);
* if (snappy_uncompress(input, input_length, output, &output_length)
* == SNAPPY_OK) {
* ... Process(output, output_length) ...
* }
* free(output);
*/
snappy_status snappy_uncompress(const char* compressed,
size_t compressed_length,
char* uncompressed,
size_t* uncompressed_length);
/*
* Returns the maximal size of the compressed representation of
* input data that is "source_length" bytes in length.
*/
size_t snappy_max_compressed_length(size_t source_length);
/*
* REQUIRES: "compressed[]" was produced by snappy_compress()
* Returns SNAPPY_OK and stores the length of the uncompressed data in
* *result normally. Returns SNAPPY_INVALID_INPUT on parsing error.
* This operation takes O(1) time.
*/
snappy_status snappy_uncompressed_length(const char* compressed,
size_t compressed_length,
size_t* result);
/*
* Check if the contents of "compressed[]" can be uncompressed successfully.
* Does not return the uncompressed data; if so, returns SNAPPY_OK,
* or if not, returns SNAPPY_INVALID_INPUT.
* Takes time proportional to compressed_length, but is usually at least a
* factor of four faster than actual decompression.
*/
snappy_status snappy_validate_compressed_buffer(const char* compressed,
size_t compressed_length);
#ifdef __cplusplus
} // extern "C"
#endif
#endif /* THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_C_H_ */

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// Copyright 2008 Google Inc. All Rights Reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
//
// Internals shared between the Snappy implementation and its unittest.
#ifndef THIRD_PARTY_SNAPPY_SNAPPY_INTERNAL_H_
#define THIRD_PARTY_SNAPPY_SNAPPY_INTERNAL_H_
#include "snappy-stubs-internal.h"
namespace snappy {
namespace internal {
class WorkingMemory {
public:
WorkingMemory() : large_table_(NULL) { }
~WorkingMemory() { delete[] large_table_; }
// Allocates and clears a hash table using memory in "*this",
// stores the number of buckets in "*table_size" and returns a pointer to
// the base of the hash table.
uint16* GetHashTable(size_t input_size, int* table_size);
private:
uint16 small_table_[1<<10]; // 2KB
uint16* large_table_; // Allocated only when needed
// No copying
WorkingMemory(const WorkingMemory&);
void operator=(const WorkingMemory&);
};
// Flat array compression that does not emit the "uncompressed length"
// prefix. Compresses "input" string to the "*op" buffer.
//
// REQUIRES: "input_length <= kBlockSize"
// REQUIRES: "op" points to an array of memory that is at least
// "MaxCompressedLength(input_length)" in size.
// REQUIRES: All elements in "table[0..table_size-1]" are initialized to zero.
// REQUIRES: "table_size" is a power of two
//
// Returns an "end" pointer into "op" buffer.
// "end - op" is the compressed size of "input".
char* CompressFragment(const char* input,
size_t input_length,
char* op,
uint16* table,
const int table_size);
// Find the largest n such that
//
// s1[0,n-1] == s2[0,n-1]
// and n <= (s2_limit - s2).
//
// Return make_pair(n, n < 8).
// Does not read *s2_limit or beyond.
// Does not read *(s1 + (s2_limit - s2)) or beyond.
// Requires that s2_limit >= s2.
//
// Separate implementation for 64-bit, little-endian cpus.
#if !defined(SNAPPY_IS_BIG_ENDIAN) && \
(defined(ARCH_K8) || defined(ARCH_PPC) || defined(ARCH_ARM))
static inline std::pair<size_t, bool> FindMatchLength(const char* s1,
const char* s2,
const char* s2_limit) {
assert(s2_limit >= s2);
size_t matched = 0;
// This block isn't necessary for correctness; we could just start looping
// immediately. As an optimization though, it is useful. It creates some not
// uncommon code paths that determine, without extra effort, whether the match
// length is less than 8. In short, we are hoping to avoid a conditional
// branch, and perhaps get better code layout from the C++ compiler.
if (SNAPPY_PREDICT_TRUE(s2 <= s2_limit - 8)) {
uint64 a1 = UNALIGNED_LOAD64(s1);
uint64 a2 = UNALIGNED_LOAD64(s2);
if (a1 != a2) {
return std::pair<size_t, bool>(Bits::FindLSBSetNonZero64(a1 ^ a2) >> 3,
true);
} else {
matched = 8;
s2 += 8;
}
}
// Find out how long the match is. We loop over the data 64 bits at a
// time until we find a 64-bit block that doesn't match; then we find
// the first non-matching bit and use that to calculate the total
// length of the match.
while (SNAPPY_PREDICT_TRUE(s2 <= s2_limit - 8)) {
if (UNALIGNED_LOAD64(s2) == UNALIGNED_LOAD64(s1 + matched)) {
s2 += 8;
matched += 8;
} else {
uint64 x = UNALIGNED_LOAD64(s2) ^ UNALIGNED_LOAD64(s1 + matched);
int matching_bits = Bits::FindLSBSetNonZero64(x);
matched += matching_bits >> 3;
assert(matched >= 8);
return std::pair<size_t, bool>(matched, false);
}
}
while (SNAPPY_PREDICT_TRUE(s2 < s2_limit)) {
if (s1[matched] == *s2) {
++s2;
++matched;
} else {
return std::pair<size_t, bool>(matched, matched < 8);
}
}
return std::pair<size_t, bool>(matched, matched < 8);
}
#else
static inline std::pair<size_t, bool> FindMatchLength(const char* s1,
const char* s2,
const char* s2_limit) {
// Implementation based on the x86-64 version, above.
assert(s2_limit >= s2);
int matched = 0;
while (s2 <= s2_limit - 4 &&
UNALIGNED_LOAD32(s2) == UNALIGNED_LOAD32(s1 + matched)) {
s2 += 4;
matched += 4;
}
if (LittleEndian::IsLittleEndian() && s2 <= s2_limit - 4) {
uint32 x = UNALIGNED_LOAD32(s2) ^ UNALIGNED_LOAD32(s1 + matched);
int matching_bits = Bits::FindLSBSetNonZero(x);
matched += matching_bits >> 3;
} else {
while ((s2 < s2_limit) && (s1[matched] == *s2)) {
++s2;
++matched;
}
}
return std::pair<size_t, bool>(matched, matched < 8);
}
#endif
// Lookup tables for decompression code. Give --snappy_dump_decompression_table
// to the unit test to recompute char_table.
enum {
LITERAL = 0,
COPY_1_BYTE_OFFSET = 1, // 3 bit length + 3 bits of offset in opcode
COPY_2_BYTE_OFFSET = 2,
COPY_4_BYTE_OFFSET = 3
};
static const int kMaximumTagLength = 5; // COPY_4_BYTE_OFFSET plus the actual offset.
// Data stored per entry in lookup table:
// Range Bits-used Description
// ------------------------------------
// 1..64 0..7 Literal/copy length encoded in opcode byte
// 0..7 8..10 Copy offset encoded in opcode byte / 256
// 0..4 11..13 Extra bytes after opcode
//
// We use eight bits for the length even though 7 would have sufficed
// because of efficiency reasons:
// (1) Extracting a byte is faster than a bit-field
// (2) It properly aligns copy offset so we do not need a <<8
static const uint16 char_table[256] = {
0x0001, 0x0804, 0x1001, 0x2001, 0x0002, 0x0805, 0x1002, 0x2002,
0x0003, 0x0806, 0x1003, 0x2003, 0x0004, 0x0807, 0x1004, 0x2004,
0x0005, 0x0808, 0x1005, 0x2005, 0x0006, 0x0809, 0x1006, 0x2006,
0x0007, 0x080a, 0x1007, 0x2007, 0x0008, 0x080b, 0x1008, 0x2008,
0x0009, 0x0904, 0x1009, 0x2009, 0x000a, 0x0905, 0x100a, 0x200a,
0x000b, 0x0906, 0x100b, 0x200b, 0x000c, 0x0907, 0x100c, 0x200c,
0x000d, 0x0908, 0x100d, 0x200d, 0x000e, 0x0909, 0x100e, 0x200e,
0x000f, 0x090a, 0x100f, 0x200f, 0x0010, 0x090b, 0x1010, 0x2010,
0x0011, 0x0a04, 0x1011, 0x2011, 0x0012, 0x0a05, 0x1012, 0x2012,
0x0013, 0x0a06, 0x1013, 0x2013, 0x0014, 0x0a07, 0x1014, 0x2014,
0x0015, 0x0a08, 0x1015, 0x2015, 0x0016, 0x0a09, 0x1016, 0x2016,
0x0017, 0x0a0a, 0x1017, 0x2017, 0x0018, 0x0a0b, 0x1018, 0x2018,
0x0019, 0x0b04, 0x1019, 0x2019, 0x001a, 0x0b05, 0x101a, 0x201a,
0x001b, 0x0b06, 0x101b, 0x201b, 0x001c, 0x0b07, 0x101c, 0x201c,
0x001d, 0x0b08, 0x101d, 0x201d, 0x001e, 0x0b09, 0x101e, 0x201e,
0x001f, 0x0b0a, 0x101f, 0x201f, 0x0020, 0x0b0b, 0x1020, 0x2020,
0x0021, 0x0c04, 0x1021, 0x2021, 0x0022, 0x0c05, 0x1022, 0x2022,
0x0023, 0x0c06, 0x1023, 0x2023, 0x0024, 0x0c07, 0x1024, 0x2024,
0x0025, 0x0c08, 0x1025, 0x2025, 0x0026, 0x0c09, 0x1026, 0x2026,
0x0027, 0x0c0a, 0x1027, 0x2027, 0x0028, 0x0c0b, 0x1028, 0x2028,
0x0029, 0x0d04, 0x1029, 0x2029, 0x002a, 0x0d05, 0x102a, 0x202a,
0x002b, 0x0d06, 0x102b, 0x202b, 0x002c, 0x0d07, 0x102c, 0x202c,
0x002d, 0x0d08, 0x102d, 0x202d, 0x002e, 0x0d09, 0x102e, 0x202e,
0x002f, 0x0d0a, 0x102f, 0x202f, 0x0030, 0x0d0b, 0x1030, 0x2030,
0x0031, 0x0e04, 0x1031, 0x2031, 0x0032, 0x0e05, 0x1032, 0x2032,
0x0033, 0x0e06, 0x1033, 0x2033, 0x0034, 0x0e07, 0x1034, 0x2034,
0x0035, 0x0e08, 0x1035, 0x2035, 0x0036, 0x0e09, 0x1036, 0x2036,
0x0037, 0x0e0a, 0x1037, 0x2037, 0x0038, 0x0e0b, 0x1038, 0x2038,
0x0039, 0x0f04, 0x1039, 0x2039, 0x003a, 0x0f05, 0x103a, 0x203a,
0x003b, 0x0f06, 0x103b, 0x203b, 0x003c, 0x0f07, 0x103c, 0x203c,
0x0801, 0x0f08, 0x103d, 0x203d, 0x1001, 0x0f09, 0x103e, 0x203e,
0x1801, 0x0f0a, 0x103f, 0x203f, 0x2001, 0x0f0b, 0x1040, 0x2040
};
} // end namespace internal
} // end namespace snappy
#endif // THIRD_PARTY_SNAPPY_SNAPPY_INTERNAL_H_

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// Copyright 2011 Google Inc. All Rights Reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
#include <string.h>
#include "snappy-sinksource.h"
namespace snappy {
Source::~Source() { }
Sink::~Sink() { }
char* Sink::GetAppendBuffer(size_t length, char* scratch) {
return scratch;
}
char* Sink::GetAppendBufferVariable(
size_t min_size, size_t desired_size_hint, char* scratch,
size_t scratch_size, size_t* allocated_size) {
*allocated_size = scratch_size;
return scratch;
}
void Sink::AppendAndTakeOwnership(
char* bytes, size_t n,
void (*deleter)(void*, const char*, size_t),
void *deleter_arg) {
Append(bytes, n);
(*deleter)(deleter_arg, bytes, n);
}
ByteArraySource::~ByteArraySource() { }
size_t ByteArraySource::Available() const { return left_; }
const char* ByteArraySource::Peek(size_t* len) {
*len = left_;
return ptr_;
}
void ByteArraySource::Skip(size_t n) {
left_ -= n;
ptr_ += n;
}
UncheckedByteArraySink::~UncheckedByteArraySink() { }
void UncheckedByteArraySink::Append(const char* data, size_t n) {
// Do no copying if the caller filled in the result of GetAppendBuffer()
if (data != dest_) {
memcpy(dest_, data, n);
}
dest_ += n;
}
char* UncheckedByteArraySink::GetAppendBuffer(size_t len, char* scratch) {
return dest_;
}
void UncheckedByteArraySink::AppendAndTakeOwnership(
char* data, size_t n,
void (*deleter)(void*, const char*, size_t),
void *deleter_arg) {
if (data != dest_) {
memcpy(dest_, data, n);
(*deleter)(deleter_arg, data, n);
}
dest_ += n;
}
char* UncheckedByteArraySink::GetAppendBufferVariable(
size_t min_size, size_t desired_size_hint, char* scratch,
size_t scratch_size, size_t* allocated_size) {
*allocated_size = desired_size_hint;
return dest_;
}
} // namespace snappy

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// Copyright 2011 Google Inc. All Rights Reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
#ifndef THIRD_PARTY_SNAPPY_SNAPPY_SINKSOURCE_H_
#define THIRD_PARTY_SNAPPY_SNAPPY_SINKSOURCE_H_
#include <stddef.h>
namespace snappy {
// A Sink is an interface that consumes a sequence of bytes.
class Sink {
public:
Sink() { }
virtual ~Sink();
// Append "bytes[0,n-1]" to this.
virtual void Append(const char* bytes, size_t n) = 0;
// Returns a writable buffer of the specified length for appending.
// May return a pointer to the caller-owned scratch buffer which
// must have at least the indicated length. The returned buffer is
// only valid until the next operation on this Sink.
//
// After writing at most "length" bytes, call Append() with the
// pointer returned from this function and the number of bytes
// written. Many Append() implementations will avoid copying
// bytes if this function returned an internal buffer.
//
// If a non-scratch buffer is returned, the caller may only pass a
// prefix of it to Append(). That is, it is not correct to pass an
// interior pointer of the returned array to Append().
//
// The default implementation always returns the scratch buffer.
virtual char* GetAppendBuffer(size_t length, char* scratch);
// For higher performance, Sink implementations can provide custom
// AppendAndTakeOwnership() and GetAppendBufferVariable() methods.
// These methods can reduce the number of copies done during
// compression/decompression.
// Append "bytes[0,n-1] to the sink. Takes ownership of "bytes"
// and calls the deleter function as (*deleter)(deleter_arg, bytes, n)
// to free the buffer. deleter function must be non NULL.
//
// The default implementation just calls Append and frees "bytes".
// Other implementations may avoid a copy while appending the buffer.
virtual void AppendAndTakeOwnership(
char* bytes, size_t n, void (*deleter)(void*, const char*, size_t),
void *deleter_arg);
// Returns a writable buffer for appending and writes the buffer's capacity to
// *allocated_size. Guarantees *allocated_size >= min_size.
// May return a pointer to the caller-owned scratch buffer which must have
// scratch_size >= min_size.
//
// The returned buffer is only valid until the next operation
// on this ByteSink.
//
// After writing at most *allocated_size bytes, call Append() with the
// pointer returned from this function and the number of bytes written.
// Many Append() implementations will avoid copying bytes if this function
// returned an internal buffer.
//
// If the sink implementation allocates or reallocates an internal buffer,
// it should use the desired_size_hint if appropriate. If a caller cannot
// provide a reasonable guess at the desired capacity, it should set
// desired_size_hint = 0.
//
// If a non-scratch buffer is returned, the caller may only pass
// a prefix to it to Append(). That is, it is not correct to pass an
// interior pointer to Append().
//
// The default implementation always returns the scratch buffer.
virtual char* GetAppendBufferVariable(
size_t min_size, size_t desired_size_hint, char* scratch,
size_t scratch_size, size_t* allocated_size);
private:
// No copying
Sink(const Sink&);
void operator=(const Sink&);
};
// A Source is an interface that yields a sequence of bytes
class Source {
public:
Source() { }
virtual ~Source();
// Return the number of bytes left to read from the source
virtual size_t Available() const = 0;
// Peek at the next flat region of the source. Does not reposition
// the source. The returned region is empty iff Available()==0.
//
// Returns a pointer to the beginning of the region and store its
// length in *len.
//
// The returned region is valid until the next call to Skip() or
// until this object is destroyed, whichever occurs first.
//
// The returned region may be larger than Available() (for example
// if this ByteSource is a view on a substring of a larger source).
// The caller is responsible for ensuring that it only reads the
// Available() bytes.
virtual const char* Peek(size_t* len) = 0;
// Skip the next n bytes. Invalidates any buffer returned by
// a previous call to Peek().
// REQUIRES: Available() >= n
virtual void Skip(size_t n) = 0;
private:
// No copying
Source(const Source&);
void operator=(const Source&);
};
// A Source implementation that yields the contents of a flat array
class ByteArraySource : public Source {
public:
ByteArraySource(const char* p, size_t n) : ptr_(p), left_(n) { }
virtual ~ByteArraySource();
virtual size_t Available() const;
virtual const char* Peek(size_t* len);
virtual void Skip(size_t n);
private:
const char* ptr_;
size_t left_;
};
// A Sink implementation that writes to a flat array without any bound checks.
class UncheckedByteArraySink : public Sink {
public:
explicit UncheckedByteArraySink(char* dest) : dest_(dest) { }
virtual ~UncheckedByteArraySink();
virtual void Append(const char* data, size_t n);
virtual char* GetAppendBuffer(size_t len, char* scratch);
virtual char* GetAppendBufferVariable(
size_t min_size, size_t desired_size_hint, char* scratch,
size_t scratch_size, size_t* allocated_size);
virtual void AppendAndTakeOwnership(
char* bytes, size_t n, void (*deleter)(void*, const char*, size_t),
void *deleter_arg);
// Return the current output pointer so that a caller can see how
// many bytes were produced.
// Note: this is not a Sink method.
char* CurrentDestination() const { return dest_; }
private:
char* dest_;
};
} // namespace snappy
#endif // THIRD_PARTY_SNAPPY_SNAPPY_SINKSOURCE_H_

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// Copyright 2011 Google Inc. All Rights Reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
#include <algorithm>
#include <string>
#include "snappy-stubs-internal.h"
namespace snappy {
void Varint::Append32(string* s, uint32 value) {
char buf[Varint::kMax32];
const char* p = Varint::Encode32(buf, value);
s->append(buf, p - buf);
}
} // namespace snappy

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// Copyright 2011 Google Inc. All Rights Reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
//
// Various stubs for the open-source version of Snappy.
#ifndef THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_INTERNAL_H_
#define THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_INTERNAL_H_
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#if defined(_MSC_VER)
#include <intrin.h>
#endif // defined(_MSC_VER)
#include "snappy-stubs-public.h"
#if defined(__x86_64__)
// Enable 64-bit optimized versions of some routines.
#define ARCH_K8 1
#elif defined(__ppc64__)
#define ARCH_PPC 1
#elif defined(__aarch64__)
#define ARCH_ARM 1
#endif
// Needed by OS X, among others.
#ifndef MAP_ANONYMOUS
#define MAP_ANONYMOUS MAP_ANON
#endif
// The size of an array, if known at compile-time.
// Will give unexpected results if used on a pointer.
// We undefine it first, since some compilers already have a definition.
#ifdef ARRAYSIZE
#undef ARRAYSIZE
#endif
#define ARRAYSIZE(a) (sizeof(a) / sizeof(*(a)))
// Static prediction hints.
#ifdef HAVE_BUILTIN_EXPECT
#define SNAPPY_PREDICT_FALSE(x) (__builtin_expect(x, 0))
#define SNAPPY_PREDICT_TRUE(x) (__builtin_expect(!!(x), 1))
#else
#define SNAPPY_PREDICT_FALSE(x) x
#define SNAPPY_PREDICT_TRUE(x) x
#endif
// This is only used for recomputing the tag byte table used during
// decompression; for simplicity we just remove it from the open-source
// version (anyone who wants to regenerate it can just do the call
// themselves within main()).
#define DEFINE_bool(flag_name, default_value, description) \
bool FLAGS_ ## flag_name = default_value
#define DECLARE_bool(flag_name) \
extern bool FLAGS_ ## flag_name
namespace snappy {
static const uint32 kuint32max = static_cast<uint32>(0xFFFFFFFF);
static const int64 kint64max = static_cast<int64>(0x7FFFFFFFFFFFFFFFLL);
// Potentially unaligned loads and stores.
// x86, PowerPC, and ARM64 can simply do these loads and stores native.
#if defined(__i386__) || defined(__x86_64__) || defined(__powerpc__) || \
defined(__aarch64__)
#define UNALIGNED_LOAD16(_p) (*reinterpret_cast<const uint16 *>(_p))
#define UNALIGNED_LOAD32(_p) (*reinterpret_cast<const uint32 *>(_p))
#define UNALIGNED_LOAD64(_p) (*reinterpret_cast<const uint64 *>(_p))
#define UNALIGNED_STORE16(_p, _val) (*reinterpret_cast<uint16 *>(_p) = (_val))
#define UNALIGNED_STORE32(_p, _val) (*reinterpret_cast<uint32 *>(_p) = (_val))
#define UNALIGNED_STORE64(_p, _val) (*reinterpret_cast<uint64 *>(_p) = (_val))
// ARMv7 and newer support native unaligned accesses, but only of 16-bit
// and 32-bit values (not 64-bit); older versions either raise a fatal signal,
// do an unaligned read and rotate the words around a bit, or do the reads very
// slowly (trip through kernel mode). There's no simple #define that says just
// “ARMv7 or higher”, so we have to filter away all ARMv5 and ARMv6
// sub-architectures.
//
// This is a mess, but there's not much we can do about it.
//
// To further complicate matters, only LDR instructions (single reads) are
// allowed to be unaligned, not LDRD (two reads) or LDM (many reads). Unless we
// explicitly tell the compiler that these accesses can be unaligned, it can and
// will combine accesses. On armcc, the way to signal this is done by accessing
// through the type (uint32 __packed *), but GCC has no such attribute
// (it ignores __attribute__((packed)) on individual variables). However,
// we can tell it that a _struct_ is unaligned, which has the same effect,
// so we do that.
#elif defined(__arm__) && \
!defined(__ARM_ARCH_4__) && \
!defined(__ARM_ARCH_4T__) && \
!defined(__ARM_ARCH_5__) && \
!defined(__ARM_ARCH_5T__) && \
!defined(__ARM_ARCH_5TE__) && \
!defined(__ARM_ARCH_5TEJ__) && \
!defined(__ARM_ARCH_6__) && \
!defined(__ARM_ARCH_6J__) && \
!defined(__ARM_ARCH_6K__) && \
!defined(__ARM_ARCH_6Z__) && \
!defined(__ARM_ARCH_6ZK__) && \
!defined(__ARM_ARCH_6T2__)
#if __GNUC__
#define ATTRIBUTE_PACKED __attribute__((__packed__))
#else
#define ATTRIBUTE_PACKED
#endif
namespace base {
namespace internal {
struct Unaligned16Struct {
uint16 value;
uint8 dummy; // To make the size non-power-of-two.
} ATTRIBUTE_PACKED;
struct Unaligned32Struct {
uint32 value;
uint8 dummy; // To make the size non-power-of-two.
} ATTRIBUTE_PACKED;
} // namespace internal
} // namespace base
#define UNALIGNED_LOAD16(_p) \
((reinterpret_cast<const ::snappy::base::internal::Unaligned16Struct *>(_p))->value)
#define UNALIGNED_LOAD32(_p) \
((reinterpret_cast<const ::snappy::base::internal::Unaligned32Struct *>(_p))->value)
#define UNALIGNED_STORE16(_p, _val) \
((reinterpret_cast< ::snappy::base::internal::Unaligned16Struct *>(_p))->value = \
(_val))
#define UNALIGNED_STORE32(_p, _val) \
((reinterpret_cast< ::snappy::base::internal::Unaligned32Struct *>(_p))->value = \
(_val))
// TODO(user): NEON supports unaligned 64-bit loads and stores.
// See if that would be more efficient on platforms supporting it,
// at least for copies.
inline uint64 UNALIGNED_LOAD64(const void *p) {
uint64 t;
memcpy(&t, p, sizeof t);
return t;
}
inline void UNALIGNED_STORE64(void *p, uint64 v) {
memcpy(p, &v, sizeof v);
}
#else
// These functions are provided for architectures that don't support
// unaligned loads and stores.
inline uint16 UNALIGNED_LOAD16(const void *p) {
uint16 t;
memcpy(&t, p, sizeof t);
return t;
}
inline uint32 UNALIGNED_LOAD32(const void *p) {
uint32 t;
memcpy(&t, p, sizeof t);
return t;
}
inline uint64 UNALIGNED_LOAD64(const void *p) {
uint64 t;
memcpy(&t, p, sizeof t);
return t;
}
inline void UNALIGNED_STORE16(void *p, uint16 v) {
memcpy(p, &v, sizeof v);
}
inline void UNALIGNED_STORE32(void *p, uint32 v) {
memcpy(p, &v, sizeof v);
}
inline void UNALIGNED_STORE64(void *p, uint64 v) {
memcpy(p, &v, sizeof v);
}
#endif
// The following guarantees declaration of the byte swap functions.
#if defined(SNAPPY_IS_BIG_ENDIAN)
#ifdef HAVE_SYS_BYTEORDER_H
#include <sys/byteorder.h>
#endif
#ifdef HAVE_SYS_ENDIAN_H
#include <sys/endian.h>
#endif
#ifdef _MSC_VER
#include <stdlib.h>
#define bswap_16(x) _byteswap_ushort(x)
#define bswap_32(x) _byteswap_ulong(x)
#define bswap_64(x) _byteswap_uint64(x)
#elif defined(__APPLE__)
// Mac OS X / Darwin features
#include <libkern/OSByteOrder.h>
#define bswap_16(x) OSSwapInt16(x)
#define bswap_32(x) OSSwapInt32(x)
#define bswap_64(x) OSSwapInt64(x)
#elif defined(HAVE_BYTESWAP_H)
#include <byteswap.h>
#elif defined(bswap32)
// FreeBSD defines bswap{16,32,64} in <sys/endian.h> (already #included).
#define bswap_16(x) bswap16(x)
#define bswap_32(x) bswap32(x)
#define bswap_64(x) bswap64(x)
#elif defined(BSWAP_64)
// Solaris 10 defines BSWAP_{16,32,64} in <sys/byteorder.h> (already #included).
#define bswap_16(x) BSWAP_16(x)
#define bswap_32(x) BSWAP_32(x)
#define bswap_64(x) BSWAP_64(x)
#else
inline uint16 bswap_16(uint16 x) {
return (x << 8) | (x >> 8);
}
inline uint32 bswap_32(uint32 x) {
x = ((x & 0xff00ff00UL) >> 8) | ((x & 0x00ff00ffUL) << 8);
return (x >> 16) | (x << 16);
}
inline uint64 bswap_64(uint64 x) {
x = ((x & 0xff00ff00ff00ff00ULL) >> 8) | ((x & 0x00ff00ff00ff00ffULL) << 8);
x = ((x & 0xffff0000ffff0000ULL) >> 16) | ((x & 0x0000ffff0000ffffULL) << 16);
return (x >> 32) | (x << 32);
}
#endif
#endif // defined(SNAPPY_IS_BIG_ENDIAN)
// Convert to little-endian storage, opposite of network format.
// Convert x from host to little endian: x = LittleEndian.FromHost(x);
// convert x from little endian to host: x = LittleEndian.ToHost(x);
//
// Store values into unaligned memory converting to little endian order:
// LittleEndian.Store16(p, x);
//
// Load unaligned values stored in little endian converting to host order:
// x = LittleEndian.Load16(p);
class LittleEndian {
public:
// Conversion functions.
#if defined(SNAPPY_IS_BIG_ENDIAN)
static uint16 FromHost16(uint16 x) { return bswap_16(x); }
static uint16 ToHost16(uint16 x) { return bswap_16(x); }
static uint32 FromHost32(uint32 x) { return bswap_32(x); }
static uint32 ToHost32(uint32 x) { return bswap_32(x); }
static bool IsLittleEndian() { return false; }
#else // !defined(SNAPPY_IS_BIG_ENDIAN)
static uint16 FromHost16(uint16 x) { return x; }
static uint16 ToHost16(uint16 x) { return x; }
static uint32 FromHost32(uint32 x) { return x; }
static uint32 ToHost32(uint32 x) { return x; }
static bool IsLittleEndian() { return true; }
#endif // !defined(SNAPPY_IS_BIG_ENDIAN)
// Functions to do unaligned loads and stores in little-endian order.
static uint16 Load16(const void *p) {
return ToHost16(UNALIGNED_LOAD16(p));
}
static void Store16(void *p, uint16 v) {
UNALIGNED_STORE16(p, FromHost16(v));
}
static uint32 Load32(const void *p) {
return ToHost32(UNALIGNED_LOAD32(p));
}
static void Store32(void *p, uint32 v) {
UNALIGNED_STORE32(p, FromHost32(v));
}
};
// Some bit-manipulation functions.
class Bits {
public:
// Return floor(log2(n)) for positive integer n. Returns -1 iff n == 0.
static int Log2Floor(uint32 n);
// Return the first set least / most significant bit, 0-indexed. Returns an
// undefined value if n == 0. FindLSBSetNonZero() is similar to ffs() except
// that it's 0-indexed.
static int FindLSBSetNonZero(uint32 n);
#if defined(ARCH_K8) || defined(ARCH_PPC) || defined(ARCH_ARM)
static int FindLSBSetNonZero64(uint64 n);
#endif // defined(ARCH_K8) || defined(ARCH_PPC) || defined(ARCH_ARM)
private:
// No copying
Bits(const Bits&);
void operator=(const Bits&);
};
#ifdef HAVE_BUILTIN_CTZ
inline int Bits::Log2Floor(uint32 n) {
return n == 0 ? -1 : 31 ^ __builtin_clz(n);
}
inline int Bits::FindLSBSetNonZero(uint32 n) {
return __builtin_ctz(n);
}
#if defined(ARCH_K8) || defined(ARCH_PPC) || defined(ARCH_ARM)
inline int Bits::FindLSBSetNonZero64(uint64 n) {
return __builtin_ctzll(n);
}
#endif // defined(ARCH_K8) || defined(ARCH_PPC) || defined(ARCH_ARM)
#elif defined(_MSC_VER)
inline int Bits::Log2Floor(uint32 n) {
unsigned long where;
if (_BitScanReverse(&where, n)) {
return where;
} else {
return -1;
}
}
inline int Bits::FindLSBSetNonZero(uint32 n) {
unsigned long where;
if (_BitScanForward(&where, n)) return static_cast<int>(where);
return 32;
}
#if defined(ARCH_K8) || defined(ARCH_PPC) || defined(ARCH_ARM)
inline int Bits::FindLSBSetNonZero64(uint64 n) {
unsigned long where;
if (_BitScanForward64(&where, n)) return static_cast<int>(where);
return 64;
}
#endif // defined(ARCH_K8) || defined(ARCH_PPC) || defined(ARCH_ARM)
#else // Portable versions.
inline int Bits::Log2Floor(uint32 n) {
if (n == 0)
return -1;
int log = 0;
uint32 value = n;
for (int i = 4; i >= 0; --i) {
int shift = (1 << i);
uint32 x = value >> shift;
if (x != 0) {
value = x;
log += shift;
}
}
assert(value == 1);
return log;
}
inline int Bits::FindLSBSetNonZero(uint32 n) {
int rc = 31;
for (int i = 4, shift = 1 << 4; i >= 0; --i) {
const uint32 x = n << shift;
if (x != 0) {
n = x;
rc -= shift;
}
shift >>= 1;
}
return rc;
}
#if defined(ARCH_K8) || defined(ARCH_PPC) || defined(ARCH_ARM)
// FindLSBSetNonZero64() is defined in terms of FindLSBSetNonZero().
inline int Bits::FindLSBSetNonZero64(uint64 n) {
const uint32 bottombits = static_cast<uint32>(n);
if (bottombits == 0) {
// Bottom bits are zero, so scan in top bits
return 32 + FindLSBSetNonZero(static_cast<uint32>(n >> 32));
} else {
return FindLSBSetNonZero(bottombits);
}
}
#endif // defined(ARCH_K8) || defined(ARCH_PPC) || defined(ARCH_ARM)
#endif // End portable versions.
// Variable-length integer encoding.
class Varint {
public:
// Maximum lengths of varint encoding of uint32.
static const int kMax32 = 5;
// Attempts to parse a varint32 from a prefix of the bytes in [ptr,limit-1].
// Never reads a character at or beyond limit. If a valid/terminated varint32
// was found in the range, stores it in *OUTPUT and returns a pointer just
// past the last byte of the varint32. Else returns NULL. On success,
// "result <= limit".
static const char* Parse32WithLimit(const char* ptr, const char* limit,
uint32* OUTPUT);
// REQUIRES "ptr" points to a buffer of length sufficient to hold "v".
// EFFECTS Encodes "v" into "ptr" and returns a pointer to the
// byte just past the last encoded byte.
static char* Encode32(char* ptr, uint32 v);
// EFFECTS Appends the varint representation of "value" to "*s".
static void Append32(string* s, uint32 value);
};
inline const char* Varint::Parse32WithLimit(const char* p,
const char* l,
uint32* OUTPUT) {
const unsigned char* ptr = reinterpret_cast<const unsigned char*>(p);
const unsigned char* limit = reinterpret_cast<const unsigned char*>(l);
uint32 b, result;
if (ptr >= limit) return NULL;
b = *(ptr++); result = b & 127; if (b < 128) goto done;
if (ptr >= limit) return NULL;
b = *(ptr++); result |= (b & 127) << 7; if (b < 128) goto done;
if (ptr >= limit) return NULL;
b = *(ptr++); result |= (b & 127) << 14; if (b < 128) goto done;
if (ptr >= limit) return NULL;
b = *(ptr++); result |= (b & 127) << 21; if (b < 128) goto done;
if (ptr >= limit) return NULL;
b = *(ptr++); result |= (b & 127) << 28; if (b < 16) goto done;
return NULL; // Value is too long to be a varint32
done:
*OUTPUT = result;
return reinterpret_cast<const char*>(ptr);
}
inline char* Varint::Encode32(char* sptr, uint32 v) {
// Operate on characters as unsigneds
unsigned char* ptr = reinterpret_cast<unsigned char*>(sptr);
static const int B = 128;
if (v < (1<<7)) {
*(ptr++) = v;
} else if (v < (1<<14)) {
*(ptr++) = v | B;
*(ptr++) = v>>7;
} else if (v < (1<<21)) {
*(ptr++) = v | B;
*(ptr++) = (v>>7) | B;
*(ptr++) = v>>14;
} else if (v < (1<<28)) {
*(ptr++) = v | B;
*(ptr++) = (v>>7) | B;
*(ptr++) = (v>>14) | B;
*(ptr++) = v>>21;
} else {
*(ptr++) = v | B;
*(ptr++) = (v>>7) | B;
*(ptr++) = (v>>14) | B;
*(ptr++) = (v>>21) | B;
*(ptr++) = v>>28;
}
return reinterpret_cast<char*>(ptr);
}
// If you know the internal layout of the std::string in use, you can
// replace this function with one that resizes the string without
// filling the new space with zeros (if applicable) --
// it will be non-portable but faster.
inline void STLStringResizeUninitialized(string* s, size_t new_size) {
s->resize(new_size);
}
// Return a mutable char* pointing to a string's internal buffer,
// which may not be null-terminated. Writing through this pointer will
// modify the string.
//
// string_as_array(&str)[i] is valid for 0 <= i < str.size() until the
// next call to a string method that invalidates iterators.
//
// As of 2006-04, there is no standard-blessed way of getting a
// mutable reference to a string's internal buffer. However, issue 530
// (http://www.open-std.org/JTC1/SC22/WG21/docs/lwg-defects.html#530)
// proposes this as the method. It will officially be part of the standard
// for C++0x. This should already work on all current implementations.
inline char* string_as_array(string* str) {
return str->empty() ? NULL : &*str->begin();
}
} // namespace snappy
#endif // THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_INTERNAL_H_

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// Copyright 2011 Google Inc. All Rights Reserved.
// Author: sesse@google.com (Steinar H. Gunderson)
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
//
// Various type stubs for the open-source version of Snappy.
//
// This file cannot include config.h, as it is included from snappy.h,
// which is a public header. Instead, snappy-stubs-public.h is generated by
// from snappy-stubs-public.h.in at configure time.
#ifndef THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
#define THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
#if ${HAVE_STDINT_H_01} // HAVE_STDINT_H
#include <stdint.h>
#endif // HAVE_STDDEF_H
#if ${HAVE_STDDEF_H_01} // HAVE_STDDEF_H
#include <stddef.h>
#endif // HAVE_STDDEF_H
#if ${HAVE_SYS_UIO_H_01} // HAVE_SYS_UIO_H
#include <sys/uio.h>
#endif // HAVE_SYS_UIO_H
#define SNAPPY_MAJOR ${SNAPPY_MAJOR}
#define SNAPPY_MINOR ${SNAPPY_MINOR}
#define SNAPPY_PATCHLEVEL ${SNAPPY_PATCHLEVEL}
#define SNAPPY_VERSION \
((SNAPPY_MAJOR << 16) | (SNAPPY_MINOR << 8) | SNAPPY_PATCHLEVEL)
#include <string>
namespace snappy {
#if ${HAVE_STDINT_H_01} // HAVE_STDINT_H
typedef int8_t int8;
typedef uint8_t uint8;
typedef int16_t int16;
typedef uint16_t uint16;
typedef int32_t int32;
typedef uint32_t uint32;
typedef int64_t int64;
typedef uint64_t uint64;
#else
typedef signed char int8;
typedef unsigned char uint8;
typedef short int16;
typedef unsigned short uint16;
typedef int int32;
typedef unsigned int uint32;
typedef long long int64;
typedef unsigned long long uint64;
#endif // HAVE_STDINT_H
typedef std::string string;
#if !${HAVE_SYS_UIO_H_01} // !HAVE_SYS_UIO_H
// Windows does not have an iovec type, yet the concept is universally useful.
// It is simple to define it ourselves, so we put it inside our own namespace.
struct iovec {
void* iov_base;
size_t iov_len;
};
#endif // !HAVE_SYS_UIO_H
} // namespace snappy
#endif // THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_

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// Copyright 2011 Google Inc. All Rights Reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
//
// Various stubs for the unit tests for the open-source version of Snappy.
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_WINDOWS_H
// Needed to be able to use std::max without workarounds in the source code.
// https://support.microsoft.com/en-us/help/143208/prb-using-stl-in-windows-program-can-cause-min-max-conflicts
#define NOMINMAX
#include <windows.h>
#endif
#include "snappy-test.h"
#include <algorithm>
DEFINE_bool(run_microbenchmarks, true,
"Run microbenchmarks before doing anything else.");
namespace snappy {
string ReadTestDataFile(const string& base, size_t size_limit) {
string contents;
const char* srcdir = getenv("srcdir"); // This is set by Automake.
string prefix;
if (srcdir) {
prefix = string(srcdir) + "/";
}
file::GetContents(prefix + "testdata/" + base, &contents, file::Defaults()
).CheckSuccess();
if (size_limit > 0) {
contents = contents.substr(0, size_limit);
}
return contents;
}
string ReadTestDataFile(const string& base) {
return ReadTestDataFile(base, 0);
}
string StringPrintf(const char* format, ...) {
char buf[4096];
va_list ap;
va_start(ap, format);
vsnprintf(buf, sizeof(buf), format, ap);
va_end(ap);
return buf;
}
bool benchmark_running = false;
int64 benchmark_real_time_us = 0;
int64 benchmark_cpu_time_us = 0;
string *benchmark_label = NULL;
int64 benchmark_bytes_processed = 0;
void ResetBenchmarkTiming() {
benchmark_real_time_us = 0;
benchmark_cpu_time_us = 0;
}
#ifdef WIN32
LARGE_INTEGER benchmark_start_real;
FILETIME benchmark_start_cpu;
#else // WIN32
struct timeval benchmark_start_real;
struct rusage benchmark_start_cpu;
#endif // WIN32
void StartBenchmarkTiming() {
#ifdef WIN32
QueryPerformanceCounter(&benchmark_start_real);
FILETIME dummy;
CHECK(GetProcessTimes(
GetCurrentProcess(), &dummy, &dummy, &dummy, &benchmark_start_cpu));
#else
gettimeofday(&benchmark_start_real, NULL);
if (getrusage(RUSAGE_SELF, &benchmark_start_cpu) == -1) {
perror("getrusage(RUSAGE_SELF)");
exit(1);
}
#endif
benchmark_running = true;
}
void StopBenchmarkTiming() {
if (!benchmark_running) {
return;
}
#ifdef WIN32
LARGE_INTEGER benchmark_stop_real;
LARGE_INTEGER benchmark_frequency;
QueryPerformanceCounter(&benchmark_stop_real);
QueryPerformanceFrequency(&benchmark_frequency);
double elapsed_real = static_cast<double>(
benchmark_stop_real.QuadPart - benchmark_start_real.QuadPart) /
benchmark_frequency.QuadPart;
benchmark_real_time_us += elapsed_real * 1e6 + 0.5;
FILETIME benchmark_stop_cpu, dummy;
CHECK(GetProcessTimes(
GetCurrentProcess(), &dummy, &dummy, &dummy, &benchmark_stop_cpu));
ULARGE_INTEGER start_ulargeint;
start_ulargeint.LowPart = benchmark_start_cpu.dwLowDateTime;
start_ulargeint.HighPart = benchmark_start_cpu.dwHighDateTime;
ULARGE_INTEGER stop_ulargeint;
stop_ulargeint.LowPart = benchmark_stop_cpu.dwLowDateTime;
stop_ulargeint.HighPart = benchmark_stop_cpu.dwHighDateTime;
benchmark_cpu_time_us +=
(stop_ulargeint.QuadPart - start_ulargeint.QuadPart + 5) / 10;
#else // WIN32
struct timeval benchmark_stop_real;
gettimeofday(&benchmark_stop_real, NULL);
benchmark_real_time_us +=
1000000 * (benchmark_stop_real.tv_sec - benchmark_start_real.tv_sec);
benchmark_real_time_us +=
(benchmark_stop_real.tv_usec - benchmark_start_real.tv_usec);
struct rusage benchmark_stop_cpu;
if (getrusage(RUSAGE_SELF, &benchmark_stop_cpu) == -1) {
perror("getrusage(RUSAGE_SELF)");
exit(1);
}
benchmark_cpu_time_us += 1000000 * (benchmark_stop_cpu.ru_utime.tv_sec -
benchmark_start_cpu.ru_utime.tv_sec);
benchmark_cpu_time_us += (benchmark_stop_cpu.ru_utime.tv_usec -
benchmark_start_cpu.ru_utime.tv_usec);
#endif // WIN32
benchmark_running = false;
}
void SetBenchmarkLabel(const string& str) {
if (benchmark_label) {
delete benchmark_label;
}
benchmark_label = new string(str);
}
void SetBenchmarkBytesProcessed(int64 bytes) {
benchmark_bytes_processed = bytes;
}
struct BenchmarkRun {
int64 real_time_us;
int64 cpu_time_us;
};
struct BenchmarkCompareCPUTime {
bool operator() (const BenchmarkRun& a, const BenchmarkRun& b) const {
return a.cpu_time_us < b.cpu_time_us;
}
};
void Benchmark::Run() {
for (int test_case_num = start_; test_case_num <= stop_; ++test_case_num) {
// Run a few iterations first to find out approximately how fast
// the benchmark is.
const int kCalibrateIterations = 100;
ResetBenchmarkTiming();
StartBenchmarkTiming();
(*function_)(kCalibrateIterations, test_case_num);
StopBenchmarkTiming();
// Let each test case run for about 200ms, but at least as many
// as we used to calibrate.
// Run five times and pick the median.
const int kNumRuns = 5;
const int kMedianPos = kNumRuns / 2;
int num_iterations = 0;
if (benchmark_real_time_us > 0) {
num_iterations = 200000 * kCalibrateIterations / benchmark_real_time_us;
}
num_iterations = std::max(num_iterations, kCalibrateIterations);
BenchmarkRun benchmark_runs[kNumRuns];
for (int run = 0; run < kNumRuns; ++run) {
ResetBenchmarkTiming();
StartBenchmarkTiming();
(*function_)(num_iterations, test_case_num);
StopBenchmarkTiming();
benchmark_runs[run].real_time_us = benchmark_real_time_us;
benchmark_runs[run].cpu_time_us = benchmark_cpu_time_us;
}
string heading = StringPrintf("%s/%d", name_.c_str(), test_case_num);
string human_readable_speed;
std::nth_element(benchmark_runs,
benchmark_runs + kMedianPos,
benchmark_runs + kNumRuns,
BenchmarkCompareCPUTime());
int64 real_time_us = benchmark_runs[kMedianPos].real_time_us;
int64 cpu_time_us = benchmark_runs[kMedianPos].cpu_time_us;
if (cpu_time_us <= 0) {
human_readable_speed = "?";
} else {
int64 bytes_per_second =
benchmark_bytes_processed * 1000000 / cpu_time_us;
if (bytes_per_second < 1024) {
human_readable_speed = StringPrintf("%dB/s", bytes_per_second);
} else if (bytes_per_second < 1024 * 1024) {
human_readable_speed = StringPrintf(
"%.1fkB/s", bytes_per_second / 1024.0f);
} else if (bytes_per_second < 1024 * 1024 * 1024) {
human_readable_speed = StringPrintf(
"%.1fMB/s", bytes_per_second / (1024.0f * 1024.0f));
} else {
human_readable_speed = StringPrintf(
"%.1fGB/s", bytes_per_second / (1024.0f * 1024.0f * 1024.0f));
}
}
fprintf(stderr,
#ifdef WIN32
"%-18s %10I64d %10I64d %10d %s %s\n",
#else
"%-18s %10lld %10lld %10d %s %s\n",
#endif
heading.c_str(),
static_cast<long long>(real_time_us * 1000 / num_iterations),
static_cast<long long>(cpu_time_us * 1000 / num_iterations),
num_iterations,
human_readable_speed.c_str(),
benchmark_label->c_str());
}
}
#ifdef HAVE_LIBZ
ZLib::ZLib()
: comp_init_(false),
uncomp_init_(false) {
Reinit();
}
ZLib::~ZLib() {
if (comp_init_) { deflateEnd(&comp_stream_); }
if (uncomp_init_) { inflateEnd(&uncomp_stream_); }
}
void ZLib::Reinit() {
compression_level_ = Z_DEFAULT_COMPRESSION;
window_bits_ = MAX_WBITS;
mem_level_ = 8; // DEF_MEM_LEVEL
if (comp_init_) {
deflateEnd(&comp_stream_);
comp_init_ = false;
}
if (uncomp_init_) {
inflateEnd(&uncomp_stream_);
uncomp_init_ = false;
}
first_chunk_ = true;
}
void ZLib::Reset() {
first_chunk_ = true;
}
// --------- COMPRESS MODE
// Initialization method to be called if we hit an error while
// compressing. On hitting an error, call this method before returning
// the error.
void ZLib::CompressErrorInit() {
deflateEnd(&comp_stream_);
comp_init_ = false;
Reset();
}
int ZLib::DeflateInit() {
return deflateInit2(&comp_stream_,
compression_level_,
Z_DEFLATED,
window_bits_,
mem_level_,
Z_DEFAULT_STRATEGY);
}
int ZLib::CompressInit(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong *sourceLen) {
int err;
comp_stream_.next_in = (Bytef*)source;
comp_stream_.avail_in = (uInt)*sourceLen;
if ((uLong)comp_stream_.avail_in != *sourceLen) return Z_BUF_ERROR;
comp_stream_.next_out = dest;
comp_stream_.avail_out = (uInt)*destLen;
if ((uLong)comp_stream_.avail_out != *destLen) return Z_BUF_ERROR;
if ( !first_chunk_ ) // only need to set up stream the first time through
return Z_OK;
if (comp_init_) { // we've already initted it
err = deflateReset(&comp_stream_);
if (err != Z_OK) {
LOG(WARNING) << "ERROR: Can't reset compress object; creating a new one";
deflateEnd(&comp_stream_);
comp_init_ = false;
}
}
if (!comp_init_) { // first use
comp_stream_.zalloc = (alloc_func)0;
comp_stream_.zfree = (free_func)0;
comp_stream_.opaque = (voidpf)0;
err = DeflateInit();
if (err != Z_OK) return err;
comp_init_ = true;
}
return Z_OK;
}
// In a perfect world we'd always have the full buffer to compress
// when the time came, and we could just call Compress(). Alas, we
// want to do chunked compression on our webserver. In this
// application, we compress the header, send it off, then compress the
// results, send them off, then compress the footer. Thus we need to
// use the chunked compression features of zlib.
int ZLib::CompressAtMostOrAll(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong *sourceLen,
int flush_mode) { // Z_FULL_FLUSH or Z_FINISH
int err;
if ( (err=CompressInit(dest, destLen, source, sourceLen)) != Z_OK )
return err;
// This is used to figure out how many bytes we wrote *this chunk*
int compressed_size = comp_stream_.total_out;
// Some setup happens only for the first chunk we compress in a run
if ( first_chunk_ ) {
first_chunk_ = false;
}
// flush_mode is Z_FINISH for all mode, Z_SYNC_FLUSH for incremental
// compression.
err = deflate(&comp_stream_, flush_mode);
*sourceLen = comp_stream_.avail_in;
if ((err == Z_STREAM_END || err == Z_OK)
&& comp_stream_.avail_in == 0
&& comp_stream_.avail_out != 0 ) {
// we processed everything ok and the output buffer was large enough.
;
} else if (err == Z_STREAM_END && comp_stream_.avail_in > 0) {
return Z_BUF_ERROR; // should never happen
} else if (err != Z_OK && err != Z_STREAM_END && err != Z_BUF_ERROR) {
// an error happened
CompressErrorInit();
return err;
} else if (comp_stream_.avail_out == 0) { // not enough space
err = Z_BUF_ERROR;
}
assert(err == Z_OK || err == Z_STREAM_END || err == Z_BUF_ERROR);
if (err == Z_STREAM_END)
err = Z_OK;
// update the crc and other metadata
compressed_size = comp_stream_.total_out - compressed_size; // delta
*destLen = compressed_size;
return err;
}
int ZLib::CompressChunkOrAll(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen,
int flush_mode) { // Z_FULL_FLUSH or Z_FINISH
const int ret =
CompressAtMostOrAll(dest, destLen, source, &sourceLen, flush_mode);
if (ret == Z_BUF_ERROR)
CompressErrorInit();
return ret;
}
// This routine only initializes the compression stream once. Thereafter, it
// just does a deflateReset on the stream, which should be faster.
int ZLib::Compress(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen) {
int err;
if ( (err=CompressChunkOrAll(dest, destLen, source, sourceLen,
Z_FINISH)) != Z_OK )
return err;
Reset(); // reset for next call to Compress
return Z_OK;
}
// --------- UNCOMPRESS MODE
int ZLib::InflateInit() {
return inflateInit2(&uncomp_stream_, MAX_WBITS);
}
// Initialization method to be called if we hit an error while
// uncompressing. On hitting an error, call this method before
// returning the error.
void ZLib::UncompressErrorInit() {
inflateEnd(&uncomp_stream_);
uncomp_init_ = false;
Reset();
}
int ZLib::UncompressInit(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong *sourceLen) {
int err;
uncomp_stream_.next_in = (Bytef*)source;
uncomp_stream_.avail_in = (uInt)*sourceLen;
// Check for source > 64K on 16-bit machine:
if ((uLong)uncomp_stream_.avail_in != *sourceLen) return Z_BUF_ERROR;
uncomp_stream_.next_out = dest;
uncomp_stream_.avail_out = (uInt)*destLen;
if ((uLong)uncomp_stream_.avail_out != *destLen) return Z_BUF_ERROR;
if ( !first_chunk_ ) // only need to set up stream the first time through
return Z_OK;
if (uncomp_init_) { // we've already initted it
err = inflateReset(&uncomp_stream_);
if (err != Z_OK) {
LOG(WARNING)
<< "ERROR: Can't reset uncompress object; creating a new one";
UncompressErrorInit();
}
}
if (!uncomp_init_) {
uncomp_stream_.zalloc = (alloc_func)0;
uncomp_stream_.zfree = (free_func)0;
uncomp_stream_.opaque = (voidpf)0;
err = InflateInit();
if (err != Z_OK) return err;
uncomp_init_ = true;
}
return Z_OK;
}
// If you compressed your data a chunk at a time, with CompressChunk,
// you can uncompress it a chunk at a time with UncompressChunk.
// Only difference bewteen chunked and unchunked uncompression
// is the flush mode we use: Z_SYNC_FLUSH (chunked) or Z_FINISH (unchunked).
int ZLib::UncompressAtMostOrAll(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong *sourceLen,
int flush_mode) { // Z_SYNC_FLUSH or Z_FINISH
int err = Z_OK;
if ( (err=UncompressInit(dest, destLen, source, sourceLen)) != Z_OK ) {
LOG(WARNING) << "UncompressInit: Error: " << err << " SourceLen: "
<< *sourceLen;
return err;
}
// This is used to figure out how many output bytes we wrote *this chunk*:
const uLong old_total_out = uncomp_stream_.total_out;
// This is used to figure out how many input bytes we read *this chunk*:
const uLong old_total_in = uncomp_stream_.total_in;
// Some setup happens only for the first chunk we compress in a run
if ( first_chunk_ ) {
first_chunk_ = false; // so we don't do this again
// For the first chunk *only* (to avoid infinite troubles), we let
// there be no actual data to uncompress. This sometimes triggers
// when the input is only the gzip header, say.
if ( *sourceLen == 0 ) {
*destLen = 0;
return Z_OK;
}
}
// We'll uncompress as much as we can. If we end OK great, otherwise
// if we get an error that seems to be the gzip footer, we store the
// gzip footer and return OK, otherwise we return the error.
// flush_mode is Z_SYNC_FLUSH for chunked mode, Z_FINISH for all mode.
err = inflate(&uncomp_stream_, flush_mode);
// Figure out how many bytes of the input zlib slurped up:
const uLong bytes_read = uncomp_stream_.total_in - old_total_in;
CHECK_LE(source + bytes_read, source + *sourceLen);
*sourceLen = uncomp_stream_.avail_in;
if ((err == Z_STREAM_END || err == Z_OK) // everything went ok
&& uncomp_stream_.avail_in == 0) { // and we read it all
;
} else if (err == Z_STREAM_END && uncomp_stream_.avail_in > 0) {
LOG(WARNING)
<< "UncompressChunkOrAll: Received some extra data, bytes total: "
<< uncomp_stream_.avail_in << " bytes: "
<< std::string(reinterpret_cast<const char *>(uncomp_stream_.next_in),
std::min(int(uncomp_stream_.avail_in), 20));
UncompressErrorInit();
return Z_DATA_ERROR; // what's the extra data for?
} else if (err != Z_OK && err != Z_STREAM_END && err != Z_BUF_ERROR) {
// an error happened
LOG(WARNING) << "UncompressChunkOrAll: Error: " << err
<< " avail_out: " << uncomp_stream_.avail_out;
UncompressErrorInit();
return err;
} else if (uncomp_stream_.avail_out == 0) {
err = Z_BUF_ERROR;
}
assert(err == Z_OK || err == Z_BUF_ERROR || err == Z_STREAM_END);
if (err == Z_STREAM_END)
err = Z_OK;
*destLen = uncomp_stream_.total_out - old_total_out; // size for this call
return err;
}
int ZLib::UncompressChunkOrAll(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen,
int flush_mode) { // Z_SYNC_FLUSH or Z_FINISH
const int ret =
UncompressAtMostOrAll(dest, destLen, source, &sourceLen, flush_mode);
if (ret == Z_BUF_ERROR)
UncompressErrorInit();
return ret;
}
int ZLib::UncompressAtMost(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong *sourceLen) {
return UncompressAtMostOrAll(dest, destLen, source, sourceLen, Z_SYNC_FLUSH);
}
// We make sure we've uncompressed everything, that is, the current
// uncompress stream is at a compressed-buffer-EOF boundary. In gzip
// mode, we also check the gzip footer to make sure we pass the gzip
// consistency checks. We RETURN true iff both types of checks pass.
bool ZLib::UncompressChunkDone() {
assert(!first_chunk_ && uncomp_init_);
// Make sure we're at the end-of-compressed-data point. This means
// if we call inflate with Z_FINISH we won't consume any input or
// write any output
Bytef dummyin, dummyout;
uLongf dummylen = 0;
if ( UncompressChunkOrAll(&dummyout, &dummylen, &dummyin, 0, Z_FINISH)
!= Z_OK ) {
return false;
}
// Make sure that when we exit, we can start a new round of chunks later
Reset();
return true;
}
// Uncompresses the source buffer into the destination buffer.
// The destination buffer must be long enough to hold the entire
// decompressed contents.
//
// We only initialize the uncomp_stream once. Thereafter, we use
// inflateReset, which should be faster.
//
// Returns Z_OK on success, otherwise, it returns a zlib error code.
int ZLib::Uncompress(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen) {
int err;
if ( (err=UncompressChunkOrAll(dest, destLen, source, sourceLen,
Z_FINISH)) != Z_OK ) {
Reset(); // let us try to compress again
return err;
}
if ( !UncompressChunkDone() ) // calls Reset()
return Z_DATA_ERROR;
return Z_OK; // stream_end is ok
}
#endif // HAVE_LIBZ
} // namespace snappy

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node_modules/classic-level/deps/snappy/snappy/snappy-test.h generated vendored Normal file
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@@ -0,0 +1,573 @@
// Copyright 2011 Google Inc. All Rights Reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
//
// Various stubs for the unit tests for the open-source version of Snappy.
#ifndef THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_TEST_H_
#define THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_TEST_H_
#include <iostream>
#include <string>
#include "snappy-stubs-internal.h"
#include <stdio.h>
#include <stdarg.h>
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif
#include <string>
#ifdef HAVE_GTEST
#include <gtest/gtest.h>
#undef TYPED_TEST
#define TYPED_TEST TEST
#define INIT_GTEST(argc, argv) ::testing::InitGoogleTest(argc, *argv)
#else
// Stubs for if the user doesn't have Google Test installed.
#define TEST(test_case, test_subcase) \
void Test_ ## test_case ## _ ## test_subcase()
#define INIT_GTEST(argc, argv)
#define TYPED_TEST TEST
#define EXPECT_EQ CHECK_EQ
#define EXPECT_NE CHECK_NE
#define EXPECT_FALSE(cond) CHECK(!(cond))
#endif
#ifdef HAVE_GFLAGS
#include <gflags/gflags.h>
// This is tricky; both gflags and Google Test want to look at the command line
// arguments. Google Test seems to be the most happy with unknown arguments,
// though, so we call it first and hope for the best.
#define InitGoogle(argv0, argc, argv, remove_flags) \
INIT_GTEST(argc, argv); \
google::ParseCommandLineFlags(argc, argv, remove_flags);
#else
// If we don't have the gflags package installed, these can only be
// changed at compile time.
#define DEFINE_int32(flag_name, default_value, description) \
static int FLAGS_ ## flag_name = default_value;
#define InitGoogle(argv0, argc, argv, remove_flags) \
INIT_GTEST(argc, argv)
#endif
#ifdef HAVE_LIBZ
#include "zlib.h"
#endif
#ifdef HAVE_LIBLZO2
#include "lzo/lzo1x.h"
#endif
namespace {
namespace file {
int Defaults() { return 0; }
class DummyStatus {
public:
void CheckSuccess() { }
};
DummyStatus GetContents(
const std::string& filename, std::string* data, int unused) {
FILE* fp = fopen(filename.c_str(), "rb");
if (fp == NULL) {
perror(filename.c_str());
exit(1);
}
data->clear();
while (!feof(fp)) {
char buf[4096];
size_t ret = fread(buf, 1, 4096, fp);
if (ret == 0 && ferror(fp)) {
perror("fread");
exit(1);
}
data->append(std::string(buf, ret));
}
fclose(fp);
return DummyStatus();
}
inline DummyStatus SetContents(
const std::string& filename, const std::string& str, int unused) {
FILE* fp = fopen(filename.c_str(), "wb");
if (fp == NULL) {
perror(filename.c_str());
exit(1);
}
int ret = fwrite(str.data(), str.size(), 1, fp);
if (ret != 1) {
perror("fwrite");
exit(1);
}
fclose(fp);
return DummyStatus();
}
} // namespace file
} // namespace
namespace snappy {
#define FLAGS_test_random_seed 301
typedef string TypeParam;
void Test_CorruptedTest_VerifyCorrupted();
void Test_Snappy_SimpleTests();
void Test_Snappy_MaxBlowup();
void Test_Snappy_RandomData();
void Test_Snappy_FourByteOffset();
void Test_SnappyCorruption_TruncatedVarint();
void Test_SnappyCorruption_UnterminatedVarint();
void Test_SnappyCorruption_OverflowingVarint();
void Test_Snappy_ReadPastEndOfBuffer();
void Test_Snappy_FindMatchLength();
void Test_Snappy_FindMatchLengthRandom();
string ReadTestDataFile(const string& base, size_t size_limit);
string ReadTestDataFile(const string& base);
// A sprintf() variant that returns a std::string.
// Not safe for general use due to truncation issues.
string StringPrintf(const char* format, ...);
// A simple, non-cryptographically-secure random generator.
class ACMRandom {
public:
explicit ACMRandom(uint32 seed) : seed_(seed) {}
int32 Next();
int32 Uniform(int32 n) {
return Next() % n;
}
uint8 Rand8() {
return static_cast<uint8>((Next() >> 1) & 0x000000ff);
}
bool OneIn(int X) { return Uniform(X) == 0; }
// Skewed: pick "base" uniformly from range [0,max_log] and then
// return "base" random bits. The effect is to pick a number in the
// range [0,2^max_log-1] with bias towards smaller numbers.
int32 Skewed(int max_log);
private:
static const uint32 M = 2147483647L; // 2^31-1
uint32 seed_;
};
inline int32 ACMRandom::Next() {
static const uint64 A = 16807; // bits 14, 8, 7, 5, 2, 1, 0
// We are computing
// seed_ = (seed_ * A) % M, where M = 2^31-1
//
// seed_ must not be zero or M, or else all subsequent computed values
// will be zero or M respectively. For all other values, seed_ will end
// up cycling through every number in [1,M-1]
uint64 product = seed_ * A;
// Compute (product % M) using the fact that ((x << 31) % M) == x.
seed_ = (product >> 31) + (product & M);
// The first reduction may overflow by 1 bit, so we may need to repeat.
// mod == M is not possible; using > allows the faster sign-bit-based test.
if (seed_ > M) {
seed_ -= M;
}
return seed_;
}
inline int32 ACMRandom::Skewed(int max_log) {
const int32 base = (Next() - 1) % (max_log+1);
return (Next() - 1) & ((1u << base)-1);
}
// A wall-time clock. This stub is not super-accurate, nor resistant to the
// system time changing.
class CycleTimer {
public:
CycleTimer() : real_time_us_(0) {}
void Start() {
#ifdef WIN32
QueryPerformanceCounter(&start_);
#else
gettimeofday(&start_, NULL);
#endif
}
void Stop() {
#ifdef WIN32
LARGE_INTEGER stop;
LARGE_INTEGER frequency;
QueryPerformanceCounter(&stop);
QueryPerformanceFrequency(&frequency);
double elapsed = static_cast<double>(stop.QuadPart - start_.QuadPart) /
frequency.QuadPart;
real_time_us_ += elapsed * 1e6 + 0.5;
#else
struct timeval stop;
gettimeofday(&stop, NULL);
real_time_us_ += 1000000 * (stop.tv_sec - start_.tv_sec);
real_time_us_ += (stop.tv_usec - start_.tv_usec);
#endif
}
double Get() {
return real_time_us_ * 1e-6;
}
private:
int64 real_time_us_;
#ifdef WIN32
LARGE_INTEGER start_;
#else
struct timeval start_;
#endif
};
// Minimalistic microbenchmark framework.
typedef void (*BenchmarkFunction)(int, int);
class Benchmark {
public:
Benchmark(const string& name, BenchmarkFunction function) :
name_(name), function_(function) {}
Benchmark* DenseRange(int start, int stop) {
start_ = start;
stop_ = stop;
return this;
}
void Run();
private:
const string name_;
const BenchmarkFunction function_;
int start_, stop_;
};
#define BENCHMARK(benchmark_name) \
Benchmark* Benchmark_ ## benchmark_name = \
(new Benchmark(#benchmark_name, benchmark_name))
extern Benchmark* Benchmark_BM_UFlat;
extern Benchmark* Benchmark_BM_UIOVec;
extern Benchmark* Benchmark_BM_UValidate;
extern Benchmark* Benchmark_BM_ZFlat;
void ResetBenchmarkTiming();
void StartBenchmarkTiming();
void StopBenchmarkTiming();
void SetBenchmarkLabel(const string& str);
void SetBenchmarkBytesProcessed(int64 bytes);
#ifdef HAVE_LIBZ
// Object-oriented wrapper around zlib.
class ZLib {
public:
ZLib();
~ZLib();
// Wipe a ZLib object to a virgin state. This differs from Reset()
// in that it also breaks any state.
void Reinit();
// Call this to make a zlib buffer as good as new. Here's the only
// case where they differ:
// CompressChunk(a); CompressChunk(b); CompressChunkDone(); vs
// CompressChunk(a); Reset(); CompressChunk(b); CompressChunkDone();
// You'll want to use Reset(), then, when you interrupt a compress
// (or uncompress) in the middle of a chunk and want to start over.
void Reset();
// According to the zlib manual, when you Compress, the destination
// buffer must have size at least src + .1%*src + 12. This function
// helps you calculate that. Augment this to account for a potential
// gzip header and footer, plus a few bytes of slack.
static int MinCompressbufSize(int uncompress_size) {
return uncompress_size + uncompress_size/1000 + 40;
}
// Compresses the source buffer into the destination buffer.
// sourceLen is the byte length of the source buffer.
// Upon entry, destLen is the total size of the destination buffer,
// which must be of size at least MinCompressbufSize(sourceLen).
// Upon exit, destLen is the actual size of the compressed buffer.
//
// This function can be used to compress a whole file at once if the
// input file is mmap'ed.
//
// Returns Z_OK if success, Z_MEM_ERROR if there was not
// enough memory, Z_BUF_ERROR if there was not enough room in the
// output buffer. Note that if the output buffer is exactly the same
// size as the compressed result, we still return Z_BUF_ERROR.
// (check CL#1936076)
int Compress(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen);
// Uncompresses the source buffer into the destination buffer.
// The destination buffer must be long enough to hold the entire
// decompressed contents.
//
// Returns Z_OK on success, otherwise, it returns a zlib error code.
int Uncompress(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen);
// Uncompress data one chunk at a time -- ie you can call this
// more than once. To get this to work you need to call per-chunk
// and "done" routines.
//
// Returns Z_OK if success, Z_MEM_ERROR if there was not
// enough memory, Z_BUF_ERROR if there was not enough room in the
// output buffer.
int UncompressAtMost(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong *sourceLen);
// Checks gzip footer information, as needed. Mostly this just
// makes sure the checksums match. Whenever you call this, it
// will assume the last 8 bytes from the previous UncompressChunk
// call are the footer. Returns true iff everything looks ok.
bool UncompressChunkDone();
private:
int InflateInit(); // sets up the zlib inflate structure
int DeflateInit(); // sets up the zlib deflate structure
// These init the zlib data structures for compressing/uncompressing
int CompressInit(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong *sourceLen);
int UncompressInit(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong *sourceLen);
// Initialization method to be called if we hit an error while
// uncompressing. On hitting an error, call this method before
// returning the error.
void UncompressErrorInit();
// Helper function for Compress
int CompressChunkOrAll(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen,
int flush_mode);
int CompressAtMostOrAll(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong *sourceLen,
int flush_mode);
// Likewise for UncompressAndUncompressChunk
int UncompressChunkOrAll(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen,
int flush_mode);
int UncompressAtMostOrAll(Bytef *dest, uLongf *destLen,
const Bytef *source, uLong *sourceLen,
int flush_mode);
// Initialization method to be called if we hit an error while
// compressing. On hitting an error, call this method before
// returning the error.
void CompressErrorInit();
int compression_level_; // compression level
int window_bits_; // log base 2 of the window size used in compression
int mem_level_; // specifies the amount of memory to be used by
// compressor (1-9)
z_stream comp_stream_; // Zlib stream data structure
bool comp_init_; // True if we have initialized comp_stream_
z_stream uncomp_stream_; // Zlib stream data structure
bool uncomp_init_; // True if we have initialized uncomp_stream_
// These are used only with chunked compression.
bool first_chunk_; // true if we need to emit headers with this chunk
};
#endif // HAVE_LIBZ
} // namespace snappy
DECLARE_bool(run_microbenchmarks);
static inline void RunSpecifiedBenchmarks() {
if (!FLAGS_run_microbenchmarks) {
return;
}
fprintf(stderr, "Running microbenchmarks.\n");
#ifndef NDEBUG
fprintf(stderr, "WARNING: Compiled with assertions enabled, will be slow.\n");
#endif
#ifndef __OPTIMIZE__
fprintf(stderr, "WARNING: Compiled without optimization, will be slow.\n");
#endif
fprintf(stderr, "Benchmark Time(ns) CPU(ns) Iterations\n");
fprintf(stderr, "---------------------------------------------------\n");
snappy::Benchmark_BM_UFlat->Run();
snappy::Benchmark_BM_UIOVec->Run();
snappy::Benchmark_BM_UValidate->Run();
snappy::Benchmark_BM_ZFlat->Run();
fprintf(stderr, "\n");
}
#ifndef HAVE_GTEST
static inline int RUN_ALL_TESTS() {
fprintf(stderr, "Running correctness tests.\n");
snappy::Test_CorruptedTest_VerifyCorrupted();
snappy::Test_Snappy_SimpleTests();
snappy::Test_Snappy_MaxBlowup();
snappy::Test_Snappy_RandomData();
snappy::Test_Snappy_FourByteOffset();
snappy::Test_SnappyCorruption_TruncatedVarint();
snappy::Test_SnappyCorruption_UnterminatedVarint();
snappy::Test_SnappyCorruption_OverflowingVarint();
snappy::Test_Snappy_ReadPastEndOfBuffer();
snappy::Test_Snappy_FindMatchLength();
snappy::Test_Snappy_FindMatchLengthRandom();
fprintf(stderr, "All tests passed.\n");
return 0;
}
#endif // HAVE_GTEST
// For main().
namespace snappy {
// Logging.
#define LOG(level) LogMessage()
#define VLOG(level) true ? (void)0 : \
snappy::LogMessageVoidify() & snappy::LogMessage()
class LogMessage {
public:
LogMessage() { }
~LogMessage() {
std::cerr << std::endl;
}
LogMessage& operator<<(const std::string& msg) {
std::cerr << msg;
return *this;
}
LogMessage& operator<<(int x) {
std::cerr << x;
return *this;
}
};
// Asserts, both versions activated in debug mode only,
// and ones that are always active.
#define CRASH_UNLESS(condition) \
SNAPPY_PREDICT_TRUE(condition) ? (void)0 : \
snappy::LogMessageVoidify() & snappy::LogMessageCrash()
#ifdef _MSC_VER
// ~LogMessageCrash calls abort() and therefore never exits. This is by design
// so temporarily disable warning C4722.
#pragma warning(push)
#pragma warning(disable:4722)
#endif
class LogMessageCrash : public LogMessage {
public:
LogMessageCrash() { }
~LogMessageCrash() {
std::cerr << std::endl;
abort();
}
};
#ifdef _MSC_VER
#pragma warning(pop)
#endif
// This class is used to explicitly ignore values in the conditional
// logging macros. This avoids compiler warnings like "value computed
// is not used" and "statement has no effect".
class LogMessageVoidify {
public:
LogMessageVoidify() { }
// This has to be an operator with a precedence lower than << but
// higher than ?:
void operator&(const LogMessage&) { }
};
#define CHECK(cond) CRASH_UNLESS(cond)
#define CHECK_LE(a, b) CRASH_UNLESS((a) <= (b))
#define CHECK_GE(a, b) CRASH_UNLESS((a) >= (b))
#define CHECK_EQ(a, b) CRASH_UNLESS((a) == (b))
#define CHECK_NE(a, b) CRASH_UNLESS((a) != (b))
#define CHECK_LT(a, b) CRASH_UNLESS((a) < (b))
#define CHECK_GT(a, b) CRASH_UNLESS((a) > (b))
#define CHECK_OK(cond) (cond).CheckSuccess()
} // namespace snappy
#endif // THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_TEST_H_

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// Copyright 2005 and onwards Google Inc.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
//
// A light-weight compression algorithm. It is designed for speed of
// compression and decompression, rather than for the utmost in space
// savings.
//
// For getting better compression ratios when you are compressing data
// with long repeated sequences or compressing data that is similar to
// other data, while still compressing fast, you might look at first
// using BMDiff and then compressing the output of BMDiff with
// Snappy.
#ifndef THIRD_PARTY_SNAPPY_SNAPPY_H__
#define THIRD_PARTY_SNAPPY_SNAPPY_H__
#include <stddef.h>
#include <string>
#include "snappy-stubs-public.h"
namespace snappy {
class Source;
class Sink;
// ------------------------------------------------------------------------
// Generic compression/decompression routines.
// ------------------------------------------------------------------------
// Compress the bytes read from "*source" and append to "*sink". Return the
// number of bytes written.
size_t Compress(Source* source, Sink* sink);
// Find the uncompressed length of the given stream, as given by the header.
// Note that the true length could deviate from this; the stream could e.g.
// be truncated.
//
// Also note that this leaves "*source" in a state that is unsuitable for
// further operations, such as RawUncompress(). You will need to rewind
// or recreate the source yourself before attempting any further calls.
bool GetUncompressedLength(Source* source, uint32* result);
// ------------------------------------------------------------------------
// Higher-level string based routines (should be sufficient for most users)
// ------------------------------------------------------------------------
// Sets "*output" to the compressed version of "input[0,input_length-1]".
// Original contents of *output are lost.
//
// REQUIRES: "input[]" is not an alias of "*output".
size_t Compress(const char* input, size_t input_length, string* output);
// Decompresses "compressed[0,compressed_length-1]" to "*uncompressed".
// Original contents of "*uncompressed" are lost.
//
// REQUIRES: "compressed[]" is not an alias of "*uncompressed".
//
// returns false if the message is corrupted and could not be decompressed
bool Uncompress(const char* compressed, size_t compressed_length,
string* uncompressed);
// Decompresses "compressed" to "*uncompressed".
//
// returns false if the message is corrupted and could not be decompressed
bool Uncompress(Source* compressed, Sink* uncompressed);
// This routine uncompresses as much of the "compressed" as possible
// into sink. It returns the number of valid bytes added to sink
// (extra invalid bytes may have been added due to errors; the caller
// should ignore those). The emitted data typically has length
// GetUncompressedLength(), but may be shorter if an error is
// encountered.
size_t UncompressAsMuchAsPossible(Source* compressed, Sink* uncompressed);
// ------------------------------------------------------------------------
// Lower-level character array based routines. May be useful for
// efficiency reasons in certain circumstances.
// ------------------------------------------------------------------------
// REQUIRES: "compressed" must point to an area of memory that is at
// least "MaxCompressedLength(input_length)" bytes in length.
//
// Takes the data stored in "input[0..input_length]" and stores
// it in the array pointed to by "compressed".
//
// "*compressed_length" is set to the length of the compressed output.
//
// Example:
// char* output = new char[snappy::MaxCompressedLength(input_length)];
// size_t output_length;
// RawCompress(input, input_length, output, &output_length);
// ... Process(output, output_length) ...
// delete [] output;
void RawCompress(const char* input,
size_t input_length,
char* compressed,
size_t* compressed_length);
// Given data in "compressed[0..compressed_length-1]" generated by
// calling the Snappy::Compress routine, this routine
// stores the uncompressed data to
// uncompressed[0..GetUncompressedLength(compressed)-1]
// returns false if the message is corrupted and could not be decrypted
bool RawUncompress(const char* compressed, size_t compressed_length,
char* uncompressed);
// Given data from the byte source 'compressed' generated by calling
// the Snappy::Compress routine, this routine stores the uncompressed
// data to
// uncompressed[0..GetUncompressedLength(compressed,compressed_length)-1]
// returns false if the message is corrupted and could not be decrypted
bool RawUncompress(Source* compressed, char* uncompressed);
// Given data in "compressed[0..compressed_length-1]" generated by
// calling the Snappy::Compress routine, this routine
// stores the uncompressed data to the iovec "iov". The number of physical
// buffers in "iov" is given by iov_cnt and their cumulative size
// must be at least GetUncompressedLength(compressed). The individual buffers
// in "iov" must not overlap with each other.
//
// returns false if the message is corrupted and could not be decrypted
bool RawUncompressToIOVec(const char* compressed, size_t compressed_length,
const struct iovec* iov, size_t iov_cnt);
// Given data from the byte source 'compressed' generated by calling
// the Snappy::Compress routine, this routine stores the uncompressed
// data to the iovec "iov". The number of physical
// buffers in "iov" is given by iov_cnt and their cumulative size
// must be at least GetUncompressedLength(compressed). The individual buffers
// in "iov" must not overlap with each other.
//
// returns false if the message is corrupted and could not be decrypted
bool RawUncompressToIOVec(Source* compressed, const struct iovec* iov,
size_t iov_cnt);
// Returns the maximal size of the compressed representation of
// input data that is "source_bytes" bytes in length;
size_t MaxCompressedLength(size_t source_bytes);
// REQUIRES: "compressed[]" was produced by RawCompress() or Compress()
// Returns true and stores the length of the uncompressed data in
// *result normally. Returns false on parsing error.
// This operation takes O(1) time.
bool GetUncompressedLength(const char* compressed, size_t compressed_length,
size_t* result);
// Returns true iff the contents of "compressed[]" can be uncompressed
// successfully. Does not return the uncompressed data. Takes
// time proportional to compressed_length, but is usually at least
// a factor of four faster than actual decompression.
bool IsValidCompressedBuffer(const char* compressed,
size_t compressed_length);
// Returns true iff the contents of "compressed" can be uncompressed
// successfully. Does not return the uncompressed data. Takes
// time proportional to *compressed length, but is usually at least
// a factor of four faster than actual decompression.
// On success, consumes all of *compressed. On failure, consumes an
// unspecified prefix of *compressed.
bool IsValidCompressed(Source* compressed);
// The size of a compression block. Note that many parts of the compression
// code assumes that kBlockSize <= 65536; in particular, the hash table
// can only store 16-bit offsets, and EmitCopy() also assumes the offset
// is 65535 bytes or less. Note also that if you change this, it will
// affect the framing format (see framing_format.txt).
//
// Note that there might be older data around that is compressed with larger
// block sizes, so the decompression code should not rely on the
// non-existence of long backreferences.
static const int kBlockLog = 16;
static const size_t kBlockSize = 1 << kBlockLog;
static const int kMaxHashTableBits = 14;
static const size_t kMaxHashTableSize = 1 << kMaxHashTableBits;
} // end namespace snappy
#endif // THIRD_PARTY_SNAPPY_SNAPPY_H__

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/* config.h. Generated from config.h.in by configure. */
/* config.h.in. Generated from configure.ac by autoheader. */
/* Define if building universal (internal helper macro) */
/* #undef AC_APPLE_UNIVERSAL_BUILD */
/* Define to 1 if the compiler supports __builtin_ctz and friends. */
#define HAVE_BUILTIN_CTZ 1
/* Define to 1 if the compiler supports __builtin_expect. */
#define HAVE_BUILTIN_EXPECT 1
/* Define to 1 if you have the <byteswap.h> header file. */
/* #undef HAVE_BYTESWAP_H */
/* Define to 1 if you have the <dlfcn.h> header file. */
#define HAVE_DLFCN_H 1
/* Use the gflags package for command-line parsing. */
/* #undef HAVE_GFLAGS */
/* Defined when Google Test is available. */
/* #undef HAVE_GTEST */
/* Define to 1 if you have the <inttypes.h> header file. */
#define HAVE_INTTYPES_H 1
/* Define to 1 if you have the `fastlz' library (-lfastlz). */
/* #undef HAVE_LIBFASTLZ */
/* Define to 1 if you have the `lzf' library (-llzf). */
/* #undef HAVE_LIBLZF */
/* Define to 1 if you have the `lzo2' library (-llzo2). */
#define HAVE_LIBLZO2 1
/* Define to 1 if you have the `quicklz' library (-lquicklz). */
/* #undef HAVE_LIBQUICKLZ */
/* Define to 1 if you have the `z' library (-lz). */
#define HAVE_LIBZ 1
/* Define to 1 if you have the <memory.h> header file. */
#define HAVE_MEMORY_H 1
/* Define to 1 if you have the <stddef.h> header file. */
#define HAVE_STDDEF_H 1
/* Define to 1 if you have the <stdint.h> header file. */
#define HAVE_STDINT_H 1
/* Define to 1 if you have the <stdlib.h> header file. */
#define HAVE_STDLIB_H 1
/* Define to 1 if you have the <strings.h> header file. */
#define HAVE_STRINGS_H 1
/* Define to 1 if you have the <string.h> header file. */
#define HAVE_STRING_H 1
/* Define to 1 if you have the <sys/byteswap.h> header file. */
/* #undef HAVE_SYS_BYTESWAP_H */
/* Define to 1 if you have the <sys/endian.h> header file. */
/* #undef HAVE_SYS_ENDIAN_H */
/* Define to 1 if you have the <sys/mman.h> header file. */
#define HAVE_SYS_MMAN_H 1
/* Define to 1 if you have the <sys/resource.h> header file. */
#define HAVE_SYS_RESOURCE_H 1
/* Define to 1 if you have the <sys/stat.h> header file. */
#define HAVE_SYS_STAT_H 1
/* Define to 1 if you have the <sys/time.h> header file. */
#define HAVE_SYS_TIME_H 1
/* Define to 1 if you have the <sys/types.h> header file. */
#define HAVE_SYS_TYPES_H 1
/* Define to 1 if you have the <sys/uio.h> header file. */
#define HAVE_SYS_UIO_H 1
/* Define to 1 if you have the <unistd.h> header file. */
#define HAVE_UNISTD_H 1
/* Define to 1 if you have the <windows.h> header file. */
/* #undef HAVE_WINDOWS_H */
/* Define to the sub-directory in which libtool stores uninstalled libraries.
*/
#define LT_OBJDIR ".libs/"
/* Name of package */
#define PACKAGE "snappy"
/* Define to the address where bug reports for this package should be sent. */
#define PACKAGE_BUGREPORT ""
/* Define to the full name of this package. */
#define PACKAGE_NAME "snappy"
/* Define to the full name and version of this package. */
#define PACKAGE_STRING "snappy 1.1.4"
/* Define to the one symbol short name of this package. */
#define PACKAGE_TARNAME "snappy"
/* Define to the version of this package. */
#define PACKAGE_VERSION "1.1.4"
/* Define to 1 if you have the ANSI C header files. */
#define STDC_HEADERS 1
/* Version number of package */
#define VERSION "1.1.4"
/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
significant byte first (like Motorola and SPARC, unlike Intel). */
#if defined AC_APPLE_UNIVERSAL_BUILD
# if defined __BIG_ENDIAN__
# define WORDS_BIGENDIAN 1
# endif
#else
# ifndef WORDS_BIGENDIAN
/* # undef WORDS_BIGENDIAN */
# endif
#endif
/* Define to `unsigned int' if <sys/types.h> does not define. */
/* #undef size_t */
/* Define to `int' if <sys/types.h> does not define. */
/* #undef ssize_t */

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// Copyright 2011 Google Inc. All Rights Reserved.
// Author: sesse@google.com (Steinar H. Gunderson)
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
//
// Various type stubs for the open-source version of Snappy.
//
// This file cannot include config.h, as it is included from snappy.h,
// which is a public header. Instead, snappy-stubs-public.h is generated by
// from snappy-stubs-public.h.in at configure time.
#ifndef THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
#define THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
#if 1
#include <stdint.h>
#endif
#if 1
#include <stddef.h>
#endif
#if 1
#include <sys/uio.h>
#endif
#define SNAPPY_MAJOR 1
#define SNAPPY_MINOR 1
#define SNAPPY_PATCHLEVEL 4
#define SNAPPY_VERSION \
((SNAPPY_MAJOR << 16) | (SNAPPY_MINOR << 8) | SNAPPY_PATCHLEVEL)
#include <string>
namespace snappy {
#if 1
typedef int8_t int8;
typedef uint8_t uint8;
typedef int16_t int16;
typedef uint16_t uint16;
typedef int32_t int32;
typedef uint32_t uint32;
typedef int64_t int64;
typedef uint64_t uint64;
#else
typedef signed char int8;
typedef unsigned char uint8;
typedef short int16;
typedef unsigned short uint16;
typedef int int32;
typedef unsigned int uint32;
typedef long long int64;
typedef unsigned long long uint64;
#endif
typedef std::string string;
#ifndef DISALLOW_COPY_AND_ASSIGN
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
TypeName(const TypeName&); \
void operator=(const TypeName&)
#endif
#if !1
// Windows does not have an iovec type, yet the concept is universally useful.
// It is simple to define it ourselves, so we put it inside our own namespace.
struct iovec {
void* iov_base;
size_t iov_len;
};
#endif
} // namespace snappy
#endif // THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_

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#include <BaseTsd.h>
typedef SSIZE_T ssize_t;
/* Define to 1 if you have the <windows.h> header file. */
#define HAVE_WINDOWS_H 1
/* Name of package */
#define PACKAGE "snappy"
/* Define to the address where bug reports for this package should be sent. */
#define PACKAGE_BUGREPORT ""
/* Define to the full name of this package. */
#define PACKAGE_NAME "snappy"
/* Define to the full name and version of this package. */
#define PACKAGE_STRING "snappy 1.1.4"
/* Define to the one symbol short name of this package. */
#define PACKAGE_TARNAME "snappy"
/* Define to the version of this package. */
#define PACKAGE_VERSION "1.1.4"
/* Define to 1 if you have the ANSI C header files. */
#define STDC_HEADERS 1
/* Version number of package */
#define VERSION "1.1.4"

100
node_modules/classic-level/deps/snappy/win32/snappy-stubs-public.h generated vendored Normal file
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// Copyright 2011 Google Inc. All Rights Reserved.
// Author: sesse@google.com (Steinar H. Gunderson)
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
//
// Various type stubs for the open-source version of Snappy.
//
// This file cannot include config.h, as it is included from snappy.h,
// which is a public header. Instead, snappy-stubs-public.h is generated by
// from snappy-stubs-public.h.in at configure time.
#ifndef THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
#define THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_
#if 0
#include <stdint.h>
#endif
#if 1
#include <stddef.h>
#endif
#if 0
#include <sys/uio.h>
#endif
#define SNAPPY_MAJOR 1
#define SNAPPY_MINOR 1
#define SNAPPY_PATCHLEVEL 4
#define SNAPPY_VERSION \
((SNAPPY_MAJOR << 16) | (SNAPPY_MINOR << 8) | SNAPPY_PATCHLEVEL)
#include <string>
namespace snappy {
#if 0
typedef int8_t int8;
typedef uint8_t uint8;
typedef int16_t int16;
typedef uint16_t uint16;
typedef int32_t int32;
typedef uint32_t uint32;
typedef int64_t int64;
typedef uint64_t uint64;
#else
typedef signed char int8;
typedef unsigned char uint8;
typedef short int16;
typedef unsigned short uint16;
typedef int int32;
typedef unsigned int uint32;
typedef long long int64;
typedef unsigned long long uint64;
#endif
typedef std::string string;
#ifndef DISALLOW_COPY_AND_ASSIGN
#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
TypeName(const TypeName&); \
void operator=(const TypeName&)
#endif
#if !0
// Windows does not have an iovec type, yet the concept is universally useful.
// It is simple to define it ourselves, so we put it inside our own namespace.
struct iovec {
void* iov_base;
size_t iov_len;
};
#endif
} // namespace snappy
#endif // THIRD_PARTY_SNAPPY_OPENSOURCE_SNAPPY_STUBS_PUBLIC_H_