Add an unpatched version of xz, XZ Utils, to /trunk/deps/third_party

xz/src/liblzma/api/lzma.h

+/**
+ * \file        api/lzma.h
+ * \brief       The public API of liblzma data compression library
+ *
+ * liblzma is a public domain general-purpose data compression library with
+ * a zlib-like API. The native file format is .xz, but also the old .lzma
+ * format and raw (no headers) streams are supported. Multiple compression
+ * algorithms (filters) are supported. Currently LZMA2 is the primary filter.
+ *
+ * liblzma is part of XZ Utils <http://tukaani.org/xz/>. XZ Utils includes
+ * a gzip-like command line tool named xz and some other tools. XZ Utils
+ * is developed and maintained by Lasse Collin.
+ *
+ * Major parts of liblzma are based on Igor Pavlov's public domain LZMA SDK
+ * <http://7-zip.org/sdk.html>.
+ *
+ * The SHA-256 implementation is based on the public domain code found from
+ * 7-Zip <http://7-zip.org/>, which has a modified version of the public
+ * domain SHA-256 code found from Crypto++ <http://www.cryptopp.com/>.
+ * The SHA-256 code in Crypto++ was written by Kevin Springle and Wei Dai.
+ */
+
+/*
+ * Author: Lasse Collin
+ *
+ * This file has been put into the public domain.
+ * You can do whatever you want with this file.
+ */
+
+#ifndef LZMA_H
+#define LZMA_H
+
+/*****************************
+ * Required standard headers *
+ *****************************/
+
+/*
+ * liblzma API headers need some standard types and macros. To allow
+ * including lzma.h without requiring the application to include other
+ * headers first, lzma.h includes the required standard headers unless
+ * they already seem to be included already or if LZMA_MANUAL_HEADERS
+ * has been defined.
+ *
+ * Here's what types and macros are needed and from which headers:
+ *  - stddef.h: size_t, NULL
+ *  - stdint.h: uint8_t, uint32_t, uint64_t, UINT32_C(n), uint64_C(n),
+ *    UINT32_MAX, UINT64_MAX
+ *
+ * However, inttypes.h is a little more portable than stdint.h, although
+ * inttypes.h declares some unneeded things compared to plain stdint.h.
+ *
+ * The hacks below aren't perfect, specifically they assume that inttypes.h
+ * exists and that it typedefs at least uint8_t, uint32_t, and uint64_t,
+ * and that, in case of incomplete inttypes.h, unsigned int is 32-bit.
+ * If the application already takes care of setting up all the types and
+ * macros properly (for example by using gnulib's stdint.h or inttypes.h),
+ * we try to detect that the macros are already defined and don't include
+ * inttypes.h here again. However, you may define LZMA_MANUAL_HEADERS to
+ * force this file to never include any system headers.
+ *
+ * Some could argue that liblzma API should provide all the required types,
+ * for example lzma_uint64, LZMA_UINT64_C(n), and LZMA_UINT64_MAX. This was
+ * seen unnecessary mess, since most systems already provide all the necessary
+ * types and macros in the standard headers.
+ *
+ * Note that liblzma API still has lzma_bool, because using stdbool.h would
+ * break C89 and C++ programs on many systems. sizeof(bool) in C99 isn't
+ * necessarily the same as sizeof(bool) in C++.
+ */
+
+#ifndef LZMA_MANUAL_HEADERS
+        /*
+         * I suppose this works portably also in C++. Note that in C++,
+         * we need to get size_t into the global namespace.
+         */
+#       include <stddef.h>
+
+        /*
+         * Skip inttypes.h if we already have all the required macros. If we
+         * have the macros, we assume that we have the matching typedefs too.
+         */
+#       if !defined(UINT32_C) || !defined(UINT64_C) \
+                        || !defined(UINT32_MAX) || !defined(UINT64_MAX)
+                /*
+                 * MSVC has no C99 support, and thus it cannot be used to
+                 * compile liblzma. The liblzma API has to still be usable
+                 * from MSVC, so we need to define the required standard
+                 * integer types here.
+                 */
+#               if defined(_WIN32) && defined(_MSC_VER)
+                        typedef unsigned __int8 uint8_t;
+                        typedef unsigned __int32 uint32_t;
+                        typedef unsigned __int64 uint64_t;
+#               else
+                        /* Use the standard inttypes.h. */
+#                       ifdef __cplusplus
+                                /*
+                                 * C99 sections 7.18.2 and 7.18.4 specify
+                                 * that C++ implementations define the limit
+                                 * and constant macros only if specifically
+                                 * requested. Note that if you want the
+                                 * format macros (PRIu64 etc.) too, you need
+                                 * to define __STDC_FORMAT_MACROS before
+                                 * including lzma.h, since re-including
+                                 * inttypes.h with __STDC_FORMAT_MACROS
+                                 * defined doesn't necessarily work.
+                                 */
+#                               ifndef __STDC_LIMIT_MACROS
+#                                       define __STDC_LIMIT_MACROS 1
+#                               endif
+#                               ifndef __STDC_CONSTANT_MACROS
+#                                       define __STDC_CONSTANT_MACROS 1
+#                               endif
+#                       endif
+
+#                       include <inttypes.h>
+#               endif
+
+                /*
+                 * Some old systems have only the typedefs in inttypes.h, and
+                 * lack all the macros. For those systems, we need a few more
+                 * hacks. We assume that unsigned int is 32-bit and unsigned
+                 * long is either 32-bit or 64-bit. If these hacks aren't
+                 * enough, the application has to setup the types manually
+                 * before including lzma.h.
+                 */
+#               ifndef UINT32_C
+#                       if defined(_WIN32) && defined(_MSC_VER)
+#                               define UINT32_C(n) n ## UI32
+#                       else
+#                               define UINT32_C(n) n ## U
+#                       endif
+#               endif
+
+#               ifndef UINT64_C
+#                       if defined(_WIN32) && defined(_MSC_VER)
+#                               define UINT64_C(n) n ## UI64
+#                       else
+                                /* Get ULONG_MAX. */
+#                               include <limits.h>
+#                               if ULONG_MAX == 4294967295UL
+#                                       define UINT64_C(n) n ## ULL
+#                               else
+#                                       define UINT64_C(n) n ## UL
+#                               endif
+#                       endif
+#               endif
+
+#               ifndef UINT32_MAX
+#                       define UINT32_MAX (UINT32_C(4294967295))
+#               endif
+
+#               ifndef UINT64_MAX
+#                       define UINT64_MAX (UINT64_C(18446744073709551615))
+#               endif
+#       endif
+#endif /* ifdef LZMA_MANUAL_HEADERS */
+
+
+/******************
+ * LZMA_API macro *
+ ******************/
+
+/*
+ * Some systems require that the functions and function pointers are
+ * declared specially in the headers. LZMA_API_IMPORT is for importing
+ * symbols and LZMA_API_CALL is to specify the calling convention.
+ *
+ * By default it is assumed that the application will link dynamically
+ * against liblzma. #define LZMA_API_STATIC in your application if you
+ * want to link against static liblzma. If you don't care about portability
+ * to operating systems like Windows, or at least don't care about linking
+ * against static liblzma on them, don't worry about LZMA_API_STATIC. That
+ * is, most developers will never need to use LZMA_API_STATIC.
+ *
+ * The GCC variants are a special case on Windows (Cygwin and MinGW).
+ * We rely on GCC doing the right thing with its auto-import feature,
+ * and thus don't use __declspec(dllimport). This way developers don't
+ * need to worry about LZMA_API_STATIC. Also the calling convention is
+ * omitted on Cygwin but not on MinGW.
+ */
+#ifndef LZMA_API_IMPORT
+#       if !defined(LZMA_API_STATIC) && defined(_WIN32) && !defined(__GNUC__)
+#               define LZMA_API_IMPORT __declspec(dllimport)
+#       else
+#               define LZMA_API_IMPORT
+#       endif
+#endif
+
+#ifndef LZMA_API_CALL
+#       if defined(_WIN32) && !defined(__CYGWIN__)
+#               define LZMA_API_CALL __cdecl
+#       else
+#               define LZMA_API_CALL
+#       endif
+#endif
+
+#ifndef LZMA_API
+#       define LZMA_API(type) LZMA_API_IMPORT type LZMA_API_CALL
+#endif
+
+
+/***********
+ * nothrow *
+ ***********/
+
+/*
+ * None of the functions in liblzma may throw an exception. Even
+ * the functions that use callback functions won't throw exceptions,
+ * because liblzma would break if a callback function threw an exception.
+ */
+#ifndef lzma_nothrow
+#       if defined(__cplusplus)
+#               define lzma_nothrow throw()
+#       elif __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)
+#               define lzma_nothrow __attribute__((__nothrow__))
+#       else
+#               define lzma_nothrow
+#       endif
+#endif
+
+
+/********************
+ * GNU C extensions *
+ ********************/
+
+/*
+ * GNU C extensions are used conditionally in the public API. It doesn't
+ * break anything if these are sometimes enabled and sometimes not, only
+ * affects warnings and optimizations.
+ */
+#if __GNUC__ >= 3
+#       ifndef lzma_attribute
+#               define lzma_attribute(attr) __attribute__(attr)
+#       endif
+
+        /* warn_unused_result was added in GCC 3.4. */
+#       ifndef lzma_attr_warn_unused_result
+#               if __GNUC__ == 3 && __GNUC_MINOR__ < 4
+#                       define lzma_attr_warn_unused_result
+#               endif
+#       endif
+
+#else
+#       ifndef lzma_attribute
+#               define lzma_attribute(attr)
+#       endif
+#endif
+
+
+#ifndef lzma_attr_pure
+#       define lzma_attr_pure lzma_attribute((__pure__))
+#endif
+
+#ifndef lzma_attr_const
+#       define lzma_attr_const lzma_attribute((__const__))
+#endif
+
+#ifndef lzma_attr_warn_unused_result
+#       define lzma_attr_warn_unused_result \
+                lzma_attribute((__warn_unused_result__))
+#endif
+
+
+/**************
+ * Subheaders *
+ **************/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Subheaders check that this is defined. It is to prevent including
+ * them directly from applications.
+ */
+#define LZMA_H_INTERNAL 1
+
+/* Basic features */
+#include "lzma/version.h"
+#include "lzma/base.h"
+#include "lzma/vli.h"
+#include "lzma/check.h"
+
+/* Filters */
+#include "lzma/filter.h"
+#include "lzma/bcj.h"
+#include "lzma/delta.h"
+#include "lzma/lzma.h"
+
+/* Container formats */
+#include "lzma/container.h"
+
+/* Advanced features */
+#include "lzma/stream_flags.h"
+#include "lzma/block.h"
+#include "lzma/index.h"
+#include "lzma/index_hash.h"
+
+/* Hardware information */
+#include "lzma/hardware.h"
+
+/*
+ * All subheaders included. Undefine LZMA_H_INTERNAL to prevent applications
+ * re-including the subheaders.
+ */
+#undef LZMA_H_INTERNAL
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ifndef LZMA_H */