--- /dev/null
+ C/7zip/Compress/LZMA/LZMADecoder.cpp | 11
+ C/7zip/Compress/LZMA/LZMADecoder.h | 1
+ C/7zip/Compress/LZMA/LZMAEncoder.cpp | 10
+ C/Common/CommandLineParser.h | 2
+ C/Common/String.cpp | 2
+ C/Common/StringConvert.h | 2
+ ZLib.cpp | 4
+ lzmalib.h | 1362 +++++++++++++++++++++++++++++++++++
+ 8 files changed, 1386 insertions(+), 8 deletions(-)
+
+Index: lzma/C/7zip/Compress/LZMA/LZMADecoder.cpp
+===================================================================
+--- lzma.orig/C/7zip/Compress/LZMA/LZMADecoder.cpp 2006-10-31 10:49:28.000000000 +1100
++++ lzma/C/7zip/Compress/LZMA/LZMADecoder.cpp 2006-10-31 10:49:28.000000000 +1100
+@@ -274,12 +274,17 @@ STDMETHODIMP CDecoder::SetDecoderPropert
+ Byte remainder = (Byte)(properties[0] / 9);\r
+ int lp = remainder % 5;\r
+ int pb = remainder / 5;\r
+- if (pb > NLength::kNumPosStatesBitsMax)\r
+- return E_INVALIDARG;\r
+- _posStateMask = (1 << pb) - 1;\r
+ UInt32 dictionarySize = 0;\r
+ for (int i = 0; i < 4; i++)\r
+ dictionarySize += ((UInt32)(properties[1 + i])) << (i * 8);\r
++ return SetDecoderPropertiesRaw(lc, lp, pb, dictionarySize);\r
++}\r
++\r
++STDMETHODIMP CDecoder::SetDecoderPropertiesRaw(int lc, int lp, int pb, UInt32 dictionarySize)\r
++{\r
++ if (pb > NLength::kNumPosStatesBitsMax)\r
++ return E_INVALIDARG;\r
++ _posStateMask = (1 << pb) - 1;\r
+ if (!_outWindowStream.Create(dictionarySize))\r
+ return E_OUTOFMEMORY;\r
+ if (!_literalDecoder.Create(lp, lc))\r
+Index: lzma/C/7zip/Compress/LZMA/LZMADecoder.h
+===================================================================
+--- lzma.orig/C/7zip/Compress/LZMA/LZMADecoder.h 2006-10-31 10:49:28.000000000 +1100
++++ lzma/C/7zip/Compress/LZMA/LZMADecoder.h 2006-10-31 21:05:37.000000000 +1100
+@@ -242,6 +242,7 @@ public:\r
+ STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);\r
+ #endif\r
+ \r
++ STDMETHOD(SetDecoderPropertiesRaw)(int lc, int lp, int pb, UInt32 dictionarySize);\r
+ CDecoder(): _outSizeDefined(false) {}\r
+ virtual ~CDecoder() {}\r
+ };\r
+Index: lzma/C/7zip/Compress/LZMA/LZMAEncoder.cpp
+===================================================================
+--- lzma.orig/C/7zip/Compress/LZMA/LZMAEncoder.cpp 2006-10-31 10:49:28.000000000 +1100
++++ lzma/C/7zip/Compress/LZMA/LZMAEncoder.cpp 2006-10-31 21:21:22.000000000 +1100
+@@ -484,12 +484,22 @@ STDMETHODIMP CEncoder::SetCoderPropertie
+ \r
+ STDMETHODIMP CEncoder::WriteCoderProperties(ISequentialOutStream *outStream)\r
+ { \r
++ Byte firstByte = (_posStateBits * 5 + _numLiteralPosStateBits) * 9 + _numLiteralContextBits;\r
++ RINOK(outStream->Write(&firstByte, sizeof(firstByte), NULL));\r
++ for (int i = 0; i < 4; i++)\r
++ {\r
++ Byte b = Byte(_dictionarySize >> (8 * i));\r
++ RINOK(outStream->Write(&b, sizeof(b), NULL));\r
++ }\r
++ return S_OK;\r
++#if 0\r
+ const UInt32 kPropSize = 5;\r
+ Byte properties[kPropSize];\r
+ properties[0] = (_posStateBits * 5 + _numLiteralPosStateBits) * 9 + _numLiteralContextBits;\r
+ for (int i = 0; i < 4; i++)\r
+ properties[1 + i] = Byte(_dictionarySize >> (8 * i));\r
+ return WriteStream(outStream, properties, kPropSize, NULL);\r
++#endif\r
+ }\r
+ \r
+ STDMETHODIMP CEncoder::SetOutStream(ISequentialOutStream *outStream)\r
+Index: lzma/lzmalib.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ lzma/lzmalib.h 2006-10-31 13:56:37.000000000 +1100
+@@ -0,0 +1,1362 @@
++/* lzmalib.h - altered version of zlib.h
++ zlib.h -- interface of the 'zlib' general purpose compression library
++ version 1.2.3, July 18th, 2005
++
++ Copyright (C) 1995-2005 Jean-loup Gailly and Mark Adler
++
++ This software is provided 'as-is', without any express or implied
++ warranty. In no event will the authors be held liable for any damages
++ arising from the use of this software.
++
++ Permission is granted to anyone to use this software for any purpose,
++ including commercial applications, and to alter it and redistribute it
++ freely, subject to the following restrictions:
++
++ 1. The origin of this software must not be misrepresented; you must not
++ claim that you wrote the original software. If you use this software
++ in a product, an acknowledgment in the product documentation would be
++ appreciated but is not required.
++ 2. Altered source versions must be plainly marked as such, and must not be
++ misrepresented as being the original software.
++ 3. This notice may not be removed or altered from any source distribution.
++
++ Jean-loup Gailly Mark Adler
++ jloup@gzip.org madler@alumni.caltech.edu
++
++
++ The data format used by the zlib library is described by RFCs (Request for
++ Comments) 1950 to 1952 in the files http://www.ietf.org/rfc/rfc1950.txt
++ (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).
++*/
++
++#ifndef ZLIB_H
++#define ZLIB_H
++
++#include "zconf.h"
++
++#ifdef __cplusplus
++extern "C" {
++#endif
++
++#define ZLIB_VERSION "1.2.3"
++#define ZLIB_VERNUM 0x1230
++
++/*
++ The 'zlib' compression library provides in-memory compression and
++ decompression functions, including integrity checks of the uncompressed
++ data. This version of the library supports only one compression method
++ (deflation) but other algorithms will be added later and will have the same
++ stream interface.
++
++ Compression can be done in a single step if the buffers are large
++ enough (for example if an input file is mmap'ed), or can be done by
++ repeated calls of the compression function. In the latter case, the
++ application must provide more input and/or consume the output
++ (providing more output space) before each call.
++
++ The compressed data format used by default by the in-memory functions is
++ the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped
++ around a deflate stream, which is itself documented in RFC 1951.
++
++ The library also supports reading and writing files in gzip (.gz) format
++ with an interface similar to that of stdio using the functions that start
++ with "gz". The gzip format is different from the zlib format. gzip is a
++ gzip wrapper, documented in RFC 1952, wrapped around a deflate stream.
++
++ This library can optionally read and write gzip streams in memory as well.
++
++ The zlib format was designed to be compact and fast for use in memory
++ and on communications channels. The gzip format was designed for single-
++ file compression on file systems, has a larger header than zlib to maintain
++ directory information, and uses a different, slower check method than zlib.
++
++ The library does not install any signal handler. The decoder checks
++ the consistency of the compressed data, so the library should never
++ crash even in case of corrupted input.
++*/
++
++typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));
++typedef void (*free_func) OF((voidpf opaque, voidpf address));
++
++struct internal_state;
++
++typedef struct z_stream_s {
++ Bytef *next_in; /* next input byte */
++ uInt avail_in; /* number of bytes available at next_in */
++ uLong total_in; /* total nb of input bytes read so far */
++
++ Bytef *next_out; /* next output byte should be put there */
++ uInt avail_out; /* remaining free space at next_out */
++ uLong total_out; /* total nb of bytes output so far */
++
++ char *msg; /* last error message, NULL if no error */
++ struct internal_state FAR *state; /* not visible by applications */
++
++ alloc_func zalloc; /* used to allocate the internal state */
++ free_func zfree; /* used to free the internal state */
++ voidpf opaque; /* private data object passed to zalloc and zfree */
++
++ int data_type; /* best guess about the data type: binary or text */
++ uLong adler; /* adler32 value of the uncompressed data */
++ uLong reserved; /* reserved for future use */
++} z_stream;
++
++typedef z_stream FAR *z_streamp;
++
++/*
++ gzip header information passed to and from zlib routines. See RFC 1952
++ for more details on the meanings of these fields.
++*/
++typedef struct gz_header_s {
++ int text; /* true if compressed data believed to be text */
++ uLong time; /* modification time */
++ int xflags; /* extra flags (not used when writing a gzip file) */
++ int os; /* operating system */
++ Bytef *extra; /* pointer to extra field or Z_NULL if none */
++ uInt extra_len; /* extra field length (valid if extra != Z_NULL) */
++ uInt extra_max; /* space at extra (only when reading header) */
++ Bytef *name; /* pointer to zero-terminated file name or Z_NULL */
++ uInt name_max; /* space at name (only when reading header) */
++ Bytef *comment; /* pointer to zero-terminated comment or Z_NULL */
++ uInt comm_max; /* space at comment (only when reading header) */
++ int hcrc; /* true if there was or will be a header crc */
++ int done; /* true when done reading gzip header (not used
++ when writing a gzip file) */
++} gz_header;
++
++typedef gz_header FAR *gz_headerp;
++
++/*
++ The application must update next_in and avail_in when avail_in has
++ dropped to zero. It must update next_out and avail_out when avail_out
++ has dropped to zero. The application must initialize zalloc, zfree and
++ opaque before calling the init function. All other fields are set by the
++ compression library and must not be updated by the application.
++
++ The opaque value provided by the application will be passed as the first
++ parameter for calls of zalloc and zfree. This can be useful for custom
++ memory management. The compression library attaches no meaning to the
++ opaque value.
++
++ zalloc must return Z_NULL if there is not enough memory for the object.
++ If zlib is used in a multi-threaded application, zalloc and zfree must be
++ thread safe.
++
++ On 16-bit systems, the functions zalloc and zfree must be able to allocate
++ exactly 65536 bytes, but will not be required to allocate more than this
++ if the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS,
++ pointers returned by zalloc for objects of exactly 65536 bytes *must*
++ have their offset normalized to zero. The default allocation function
++ provided by this library ensures this (see zutil.c). To reduce memory
++ requirements and avoid any allocation of 64K objects, at the expense of
++ compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h).
++
++ The fields total_in and total_out can be used for statistics or
++ progress reports. After compression, total_in holds the total size of
++ the uncompressed data and may be saved for use in the decompressor
++ (particularly if the decompressor wants to decompress everything in
++ a single step).
++*/
++
++ /* constants */
++
++#define Z_NO_FLUSH 0
++#define Z_PARTIAL_FLUSH 1 /* will be removed, use Z_SYNC_FLUSH instead */
++#define Z_SYNC_FLUSH 2
++#define Z_FULL_FLUSH 3
++#define Z_FINISH 4
++#define Z_BLOCK 5
++/* Allowed flush values; see deflate() and inflate() below for details */
++
++#define Z_OK 0
++#define Z_STREAM_END 1
++#define Z_NEED_DICT 2
++#define Z_ERRNO (-1)
++#define Z_STREAM_ERROR (-2)
++#define Z_DATA_ERROR (-3)
++#define Z_MEM_ERROR (-4)
++#define Z_BUF_ERROR (-5)
++#define Z_VERSION_ERROR (-6)
++/* Return codes for the compression/decompression functions. Negative
++ * values are errors, positive values are used for special but normal events.
++ */
++
++#define Z_NO_COMPRESSION 0
++#define Z_BEST_SPEED 1
++#define Z_BEST_COMPRESSION 9
++#define Z_DEFAULT_COMPRESSION (-1)
++/* compression levels */
++
++#define Z_FILTERED 1
++#define Z_HUFFMAN_ONLY 2
++#define Z_RLE 3
++#define Z_FIXED 4
++#define Z_DEFAULT_STRATEGY 0
++/* compression strategy; see deflateInit2() below for details */
++
++#define Z_BINARY 0
++#define Z_TEXT 1
++#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */
++#define Z_UNKNOWN 2
++/* Possible values of the data_type field (though see inflate()) */
++
++#define Z_DEFLATED 8
++/* The deflate compression method (the only one supported in this version) */
++
++#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */
++
++#define zlib_version zlibVersion()
++/* for compatibility with versions < 1.0.2 */
++
++ /* basic functions */
++
++ZEXTERN const char * ZEXPORT zlibVersion OF((void));
++/* The application can compare zlibVersion and ZLIB_VERSION for consistency.
++ If the first character differs, the library code actually used is
++ not compatible with the zlib.h header file used by the application.
++ This check is automatically made by deflateInit and inflateInit.
++ */
++
++/*
++ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));
++
++ Initializes the internal stream state for compression. The fields
++ zalloc, zfree and opaque must be initialized before by the caller.
++ If zalloc and zfree are set to Z_NULL, deflateInit updates them to
++ use default allocation functions.
++
++ The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:
++ 1 gives best speed, 9 gives best compression, 0 gives no compression at
++ all (the input data is simply copied a block at a time).
++ Z_DEFAULT_COMPRESSION requests a default compromise between speed and
++ compression (currently equivalent to level 6).
++
++ deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not
++ enough memory, Z_STREAM_ERROR if level is not a valid compression level,
++ Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible
++ with the version assumed by the caller (ZLIB_VERSION).
++ msg is set to null if there is no error message. deflateInit does not
++ perform any compression: this will be done by deflate().
++*/
++
++
++ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
++/*
++ deflate compresses as much data as possible, and stops when the input
++ buffer becomes empty or the output buffer becomes full. It may introduce some
++ output latency (reading input without producing any output) except when
++ forced to flush.
++
++ The detailed semantics are as follows. deflate performs one or both of the
++ following actions:
++
++ - Compress more input starting at next_in and update next_in and avail_in
++ accordingly. If not all input can be processed (because there is not
++ enough room in the output buffer), next_in and avail_in are updated and
++ processing will resume at this point for the next call of deflate().
++
++ - Provide more output starting at next_out and update next_out and avail_out
++ accordingly. This action is forced if the parameter flush is non zero.
++ Forcing flush frequently degrades the compression ratio, so this parameter
++ should be set only when necessary (in interactive applications).
++ Some output may be provided even if flush is not set.
++
++ Before the call of deflate(), the application should ensure that at least
++ one of the actions is possible, by providing more input and/or consuming
++ more output, and updating avail_in or avail_out accordingly; avail_out
++ should never be zero before the call. The application can consume the
++ compressed output when it wants, for example when the output buffer is full
++ (avail_out == 0), or after each call of deflate(). If deflate returns Z_OK
++ and with zero avail_out, it must be called again after making room in the
++ output buffer because there might be more output pending.
++
++ Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to
++ decide how much data to accumualte before producing output, in order to
++ maximize compression.
++
++ If the parameter flush is set to Z_SYNC_FLUSH, all pending output is
++ flushed to the output buffer and the output is aligned on a byte boundary, so
++ that the decompressor can get all input data available so far. (In particular
++ avail_in is zero after the call if enough output space has been provided
++ before the call.) Flushing may degrade compression for some compression
++ algorithms and so it should be used only when necessary.
++
++ If flush is set to Z_FULL_FLUSH, all output is flushed as with
++ Z_SYNC_FLUSH, and the compression state is reset so that decompression can
++ restart from this point if previous compressed data has been damaged or if
++ random access is desired. Using Z_FULL_FLUSH too often can seriously degrade
++ compression.
++
++ If deflate returns with avail_out == 0, this function must be called again
++ with the same value of the flush parameter and more output space (updated
++ avail_out), until the flush is complete (deflate returns with non-zero
++ avail_out). In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that
++ avail_out is greater than six to avoid repeated flush markers due to
++ avail_out == 0 on return.
++
++ If the parameter flush is set to Z_FINISH, pending input is processed,
++ pending output is flushed and deflate returns with Z_STREAM_END if there
++ was enough output space; if deflate returns with Z_OK, this function must be
++ called again with Z_FINISH and more output space (updated avail_out) but no
++ more input data, until it returns with Z_STREAM_END or an error. After
++ deflate has returned Z_STREAM_END, the only possible operations on the
++ stream are deflateReset or deflateEnd.
++
++ Z_FINISH can be used immediately after deflateInit if all the compression
++ is to be done in a single step. In this case, avail_out must be at least
++ the value returned by deflateBound (see below). If deflate does not return
++ Z_STREAM_END, then it must be called again as described above.
++
++ deflate() sets strm->adler to the adler32 checksum of all input read
++ so far (that is, total_in bytes).
++
++ deflate() may update strm->data_type if it can make a good guess about
++ the input data type (Z_BINARY or Z_TEXT). In doubt, the data is considered
++ binary. This field is only for information purposes and does not affect
++ the compression algorithm in any manner.
++
++ deflate() returns Z_OK if some progress has been made (more input
++ processed or more output produced), Z_STREAM_END if all input has been
++ consumed and all output has been produced (only when flush is set to
++ Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example
++ if next_in or next_out was NULL), Z_BUF_ERROR if no progress is possible
++ (for example avail_in or avail_out was zero). Note that Z_BUF_ERROR is not
++ fatal, and deflate() can be called again with more input and more output
++ space to continue compressing.
++*/
++
++
++ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
++/*
++ All dynamically allocated data structures for this stream are freed.
++ This function discards any unprocessed input and does not flush any
++ pending output.
++
++ deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the
++ stream state was inconsistent, Z_DATA_ERROR if the stream was freed
++ prematurely (some input or output was discarded). In the error case,
++ msg may be set but then points to a static string (which must not be
++ deallocated).
++*/
++
++
++/*
++ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
++
++ Initializes the internal stream state for decompression. The fields
++ next_in, avail_in, zalloc, zfree and opaque must be initialized before by
++ the caller. If next_in is not Z_NULL and avail_in is large enough (the exact
++ value depends on the compression method), inflateInit determines the
++ compression method from the zlib header and allocates all data structures
++ accordingly; otherwise the allocation will be deferred to the first call of
++ inflate. If zalloc and zfree are set to Z_NULL, inflateInit updates them to
++ use default allocation functions.
++
++ inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
++ memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
++ version assumed by the caller. msg is set to null if there is no error
++ message. inflateInit does not perform any decompression apart from reading
++ the zlib header if present: this will be done by inflate(). (So next_in and
++ avail_in may be modified, but next_out and avail_out are unchanged.)
++*/
++
++
++ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
++/*
++ inflate decompresses as much data as possible, and stops when the input
++ buffer becomes empty or the output buffer becomes full. It may introduce
++ some output latency (reading input without producing any output) except when
++ forced to flush.
++
++ The detailed semantics are as follows. inflate performs one or both of the
++ following actions:
++
++ - Decompress more input starting at next_in and update next_in and avail_in
++ accordingly. If not all input can be processed (because there is not
++ enough room in the output buffer), next_in is updated and processing
++ will resume at this point for the next call of inflate().
++
++ - Provide more output starting at next_out and update next_out and avail_out
++ accordingly. inflate() provides as much output as possible, until there
++ is no more input data or no more space in the output buffer (see below
++ about the flush parameter).
++
++ Before the call of inflate(), the application should ensure that at least
++ one of the actions is possible, by providing more input and/or consuming
++ more output, and updating the next_* and avail_* values accordingly.
++ The application can consume the uncompressed output when it wants, for
++ example when the output buffer is full (avail_out == 0), or after each
++ call of inflate(). If inflate returns Z_OK and with zero avail_out, it
++ must be called again after making room in the output buffer because there
++ might be more output pending.
++
++ The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH,
++ Z_FINISH, or Z_BLOCK. Z_SYNC_FLUSH requests that inflate() flush as much
++ output as possible to the output buffer. Z_BLOCK requests that inflate() stop
++ if and when it gets to the next deflate block boundary. When decoding the
++ zlib or gzip format, this will cause inflate() to return immediately after
++ the header and before the first block. When doing a raw inflate, inflate()
++ will go ahead and process the first block, and will return when it gets to
++ the end of that block, or when it runs out of data.
++
++ The Z_BLOCK option assists in appending to or combining deflate streams.
++ Also to assist in this, on return inflate() will set strm->data_type to the
++ number of unused bits in the last byte taken from strm->next_in, plus 64
++ if inflate() is currently decoding the last block in the deflate stream,
++ plus 128 if inflate() returned immediately after decoding an end-of-block
++ code or decoding the complete header up to just before the first byte of the
++ deflate stream. The end-of-block will not be indicated until all of the
++ uncompressed data from that block has been written to strm->next_out. The
++ number of unused bits may in general be greater than seven, except when
++ bit 7 of data_type is set, in which case the number of unused bits will be
++ less than eight.
++
++ inflate() should normally be called until it returns Z_STREAM_END or an
++ error. However if all decompression is to be performed in a single step
++ (a single call of inflate), the parameter flush should be set to
++ Z_FINISH. In this case all pending input is processed and all pending
++ output is flushed; avail_out must be large enough to hold all the
++ uncompressed data. (The size of the uncompressed data may have been saved
++ by the compressor for this purpose.) The next operation on this stream must
++ be inflateEnd to deallocate the decompression state. The use of Z_FINISH
++ is never required, but can be used to inform inflate that a faster approach
++ may be used for the single inflate() call.
++
++ In this implementation, inflate() always flushes as much output as
++ possible to the output buffer, and always uses the faster approach on the
++ first call. So the only effect of the flush parameter in this implementation
++ is on the return value of inflate(), as noted below, or when it returns early
++ because Z_BLOCK is used.
++
++ If a preset dictionary is needed after this call (see inflateSetDictionary
++ below), inflate sets strm->adler to the adler32 checksum of the dictionary
++ chosen by the compressor and returns Z_NEED_DICT; otherwise it sets
++ strm->adler to the adler32 checksum of all output produced so far (that is,
++ total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described
++ below. At the end of the stream, inflate() checks that its computed adler32
++ checksum is equal to that saved by the compressor and returns Z_STREAM_END
++ only if the checksum is correct.
++
++ inflate() will decompress and check either zlib-wrapped or gzip-wrapped
++ deflate data. The header type is detected automatically. Any information
++ contained in the gzip header is not retained, so applications that need that
++ information should instead use raw inflate, see inflateInit2() below, or
++ inflateBack() and perform their own processing of the gzip header and
++ trailer.
++
++ inflate() returns Z_OK if some progress has been made (more input processed
++ or more output produced), Z_STREAM_END if the end of the compressed data has
++ been reached and all uncompressed output has been produced, Z_NEED_DICT if a
++ preset dictionary is needed at this point, Z_DATA_ERROR if the input data was
++ corrupted (input stream not conforming to the zlib format or incorrect check
++ value), Z_STREAM_ERROR if the stream structure was inconsistent (for example
++ if next_in or next_out was NULL), Z_MEM_ERROR if there was not enough memory,
++ Z_BUF_ERROR if no progress is possible or if there was not enough room in the
++ output buffer when Z_FINISH is used. Note that Z_BUF_ERROR is not fatal, and
++ inflate() can be called again with more input and more output space to
++ continue decompressing. If Z_DATA_ERROR is returned, the application may then
++ call inflateSync() to look for a good compression block if a partial recovery
++ of the data is desired.
++*/
++
++
++ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));
++/*
++ All dynamically allocated data structures for this stream are freed.
++ This function discards any unprocessed input and does not flush any
++ pending output.
++
++ inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state
++ was inconsistent. In the error case, msg may be set but then points to a
++ static string (which must not be deallocated).
++*/
++
++ /* Advanced functions */
++
++/*
++ The following functions are needed only in some special applications.
++*/
++
++/*
++ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
++ int level,
++ int method,
++ int windowBits,
++ int memLevel,
++ int strategy));
++
++ This is another version of deflateInit with more compression options. The
++ fields next_in, zalloc, zfree and opaque must be initialized before by
++ the caller.
++
++ The method parameter is the compression method. It must be Z_DEFLATED in
++ this version of the library.
++
++ The windowBits parameter is the base two logarithm of the window size
++ (the size of the history buffer). It should be in the range 8..15 for this
++ version of the library. Larger values of this parameter result in better
++ compression at the expense of memory usage. The default value is 15 if
++ deflateInit is used instead.
++
++ windowBits can also be -8..-15 for raw deflate. In this case, -windowBits
++ determines the window size. deflate() will then generate raw deflate data
++ with no zlib header or trailer, and will not compute an adler32 check value.
++
++ windowBits can also be greater than 15 for optional gzip encoding. Add
++ 16 to windowBits to write a simple gzip header and trailer around the
++ compressed data instead of a zlib wrapper. The gzip header will have no
++ file name, no extra data, no comment, no modification time (set to zero),
++ no header crc, and the operating system will be set to 255 (unknown). If a
++ gzip stream is being written, strm->adler is a crc32 instead of an adler32.
++
++ The memLevel parameter specifies how much memory should be allocated
++ for the internal compression state. memLevel=1 uses minimum memory but
++ is slow and reduces compression ratio; memLevel=9 uses maximum memory
++ for optimal speed. The default value is 8. See zconf.h for total memory
++ usage as a function of windowBits and memLevel.
++
++ The strategy parameter is used to tune the compression algorithm. Use the
++ value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a
++ filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no
++ string match), or Z_RLE to limit match distances to one (run-length
++ encoding). Filtered data consists mostly of small values with a somewhat
++ random distribution. In this case, the compression algorithm is tuned to
++ compress them better. The effect of Z_FILTERED is to force more Huffman
++ coding and less string matching; it is somewhat intermediate between
++ Z_DEFAULT and Z_HUFFMAN_ONLY. Z_RLE is designed to be almost as fast as
++ Z_HUFFMAN_ONLY, but give better compression for PNG image data. The strategy
++ parameter only affects the compression ratio but not the correctness of the
++ compressed output even if it is not set appropriately. Z_FIXED prevents the
++ use of dynamic Huffman codes, allowing for a simpler decoder for special
++ applications.
++
++ deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
++ memory, Z_STREAM_ERROR if a parameter is invalid (such as an invalid
++ method). msg is set to null if there is no error message. deflateInit2 does
++ not perform any compression: this will be done by deflate().
++*/
++
++ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,
++ const Bytef *dictionary,
++ uInt dictLength));
++/*
++ Initializes the compression dictionary from the given byte sequence
++ without producing any compressed output. This function must be called
++ immediately after deflateInit, deflateInit2 or deflateReset, before any
++ call of deflate. The compressor and decompressor must use exactly the same
++ dictionary (see inflateSetDictionary).
++
++ The dictionary should consist of strings (byte sequences) that are likely
++ to be encountered later in the data to be compressed, with the most commonly
++ used strings preferably put towards the end of the dictionary. Using a
++ dictionary is most useful when the data to be compressed is short and can be
++ predicted with good accuracy; the data can then be compressed better than
++ with the default empty dictionary.
++
++ Depending on the size of the compression data structures selected by
++ deflateInit or deflateInit2, a part of the dictionary may in effect be
++ discarded, for example if the dictionary is larger than the window size in
++ deflate or deflate2. Thus the strings most likely to be useful should be
++ put at the end of the dictionary, not at the front. In addition, the
++ current implementation of deflate will use at most the window size minus
++ 262 bytes of the provided dictionary.
++
++ Upon return of this function, strm->adler is set to the adler32 value
++ of the dictionary; the decompressor may later use this value to determine
++ which dictionary has been used by the compressor. (The adler32 value
++ applies to the whole dictionary even if only a subset of the dictionary is
++ actually used by the compressor.) If a raw deflate was requested, then the
++ adler32 value is not computed and strm->adler is not set.
++
++ deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a
++ parameter is invalid (such as NULL dictionary) or the stream state is
++ inconsistent (for example if deflate has already been called for this stream
++ or if the compression method is bsort). deflateSetDictionary does not
++ perform any compression: this will be done by deflate().
++*/
++
++ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
++ z_streamp source));
++/*
++ Sets the destination stream as a complete copy of the source stream.
++
++ This function can be useful when several compression strategies will be
++ tried, for example when there are several ways of pre-processing the input
++ data with a filter. The streams that will be discarded should then be freed
++ by calling deflateEnd. Note that deflateCopy duplicates the internal
++ compression state which can be quite large, so this strategy is slow and
++ can consume lots of memory.
++
++ deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
++ enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
++ (such as zalloc being NULL). msg is left unchanged in both source and
++ destination.
++*/
++
++ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));
++/*
++ This function is equivalent to deflateEnd followed by deflateInit,
++ but does not free and reallocate all the internal compression state.
++ The stream will keep the same compression level and any other attributes
++ that may have been set by deflateInit2.
++
++ deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
++ stream state was inconsistent (such as zalloc or state being NULL).
++*/
++
++ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
++ int level,
++ int strategy));
++/*
++ Dynamically update the compression level and compression strategy. The
++ interpretation of level and strategy is as in deflateInit2. This can be
++ used to switch between compression and straight copy of the input data, or
++ to switch to a different kind of input data requiring a different
++ strategy. If the compression level is changed, the input available so far
++ is compressed with the old level (and may be flushed); the new level will
++ take effect only at the next call of deflate().
++
++ Before the call of deflateParams, the stream state must be set as for
++ a call of deflate(), since the currently available input may have to
++ be compressed and flushed. In particular, strm->avail_out must be non-zero.
++
++ deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source
++ stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR
++ if strm->avail_out was zero.
++*/
++
++ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm,
++ int good_length,
++ int max_lazy,
++ int nice_length,
++ int max_chain));
++/*
++ Fine tune deflate's internal compression parameters. This should only be
++ used by someone who understands the algorithm used by zlib's deflate for
++ searching for the best matching string, and even then only by the most
++ fanatic optimizer trying to squeeze out the last compressed bit for their
++ specific input data. Read the deflate.c source code for the meaning of the
++ max_lazy, good_length, nice_length, and max_chain parameters.
++
++ deflateTune() can be called after deflateInit() or deflateInit2(), and
++ returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream.
++ */
++
++ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm,
++ uLong sourceLen));
++/*
++ deflateBound() returns an upper bound on the compressed size after
++ deflation of sourceLen bytes. It must be called after deflateInit()
++ or deflateInit2(). This would be used to allocate an output buffer
++ for deflation in a single pass, and so would be called before deflate().
++*/
++
++ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,
++ int bits,
++ int value));
++/*
++ deflatePrime() inserts bits in the deflate output stream. The intent
++ is that this function is used to start off the deflate output with the
++ bits leftover from a previous deflate stream when appending to it. As such,
++ this function can only be used for raw deflate, and must be used before the
++ first deflate() call after a deflateInit2() or deflateReset(). bits must be
++ less than or equal to 16, and that many of the least significant bits of
++ value will be inserted in the output.
++
++ deflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source
++ stream state was inconsistent.
++*/
++
++ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,
++ gz_headerp head));
++/*
++ deflateSetHeader() provides gzip header information for when a gzip
++ stream is requested by deflateInit2(). deflateSetHeader() may be called
++ after deflateInit2() or deflateReset() and before the first call of
++ deflate(). The text, time, os, extra field, name, and comment information
++ in the provided gz_header structure are written to the gzip header (xflag is
++ ignored -- the extra flags are set according to the compression level). The
++ caller must assure that, if not Z_NULL, name and comment are terminated with
++ a zero byte, and that if extra is not Z_NULL, that extra_len bytes are
++ available there. If hcrc is true, a gzip header crc is included. Note that
++ the current versions of the command-line version of gzip (up through version
++ 1.3.x) do not support header crc's, and will report that it is a "multi-part
++ gzip file" and give up.
++
++ If deflateSetHeader is not used, the default gzip header has text false,
++ the time set to zero, and os set to 255, with no extra, name, or comment
++ fields. The gzip header is returned to the default state by deflateReset().
++
++ deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
++ stream state was inconsistent.
++*/
++
++/*
++ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
++ int windowBits));
++
++ This is another version of inflateInit with an extra parameter. The
++ fields next_in, avail_in, zalloc, zfree and opaque must be initialized
++ before by the caller.
++
++ The windowBits parameter is the base two logarithm of the maximum window
++ size (the size of the history buffer). It should be in the range 8..15 for
++ this version of the library. The default value is 15 if inflateInit is used
++ instead. windowBits must be greater than or equal to the windowBits value
++ provided to deflateInit2() while compressing, or it must be equal to 15 if
++ deflateInit2() was not used. If a compressed stream with a larger window
++ size is given as input, inflate() will return with the error code
++ Z_DATA_ERROR instead of trying to allocate a larger window.
++
++ windowBits can also be -8..-15 for raw inflate. In this case, -windowBits
++ determines the window size. inflate() will then process raw deflate data,
++ not looking for a zlib or gzip header, not generating a check value, and not
++ looking for any check values for comparison at the end of the stream. This
++ is for use with other formats that use the deflate compressed data format
++ such as zip. Those formats provide their own check values. If a custom
++ format is developed using the raw deflate format for compressed data, it is
++ recommended that a check value such as an adler32 or a crc32 be applied to
++ the uncompressed data as is done in the zlib, gzip, and zip formats. For
++ most applications, the zlib format should be used as is. Note that comments
++ above on the use in deflateInit2() applies to the magnitude of windowBits.
++
++ windowBits can also be greater than 15 for optional gzip decoding. Add
++ 32 to windowBits to enable zlib and gzip decoding with automatic header
++ detection, or add 16 to decode only the gzip format (the zlib format will
++ return a Z_DATA_ERROR). If a gzip stream is being decoded, strm->adler is
++ a crc32 instead of an adler32.
++
++ inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
++ memory, Z_STREAM_ERROR if a parameter is invalid (such as a null strm). msg
++ is set to null if there is no error message. inflateInit2 does not perform
++ any decompression apart from reading the zlib header if present: this will
++ be done by inflate(). (So next_in and avail_in may be modified, but next_out
++ and avail_out are unchanged.)
++*/
++
++ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
++ const Bytef *dictionary,
++ uInt dictLength));
++/*
++ Initializes the decompression dictionary from the given uncompressed byte
++ sequence. This function must be called immediately after a call of inflate,
++ if that call returned Z_NEED_DICT. The dictionary chosen by the compressor
++ can be determined from the adler32 value returned by that call of inflate.
++ The compressor and decompressor must use exactly the same dictionary (see
++ deflateSetDictionary). For raw inflate, this function can be called
++ immediately after inflateInit2() or inflateReset() and before any call of
++ inflate() to set the dictionary. The application must insure that the
++ dictionary that was used for compression is provided.
++
++ inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a
++ parameter is invalid (such as NULL dictionary) or the stream state is
++ inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the
++ expected one (incorrect adler32 value). inflateSetDictionary does not
++ perform any decompression: this will be done by subsequent calls of
++ inflate().
++*/
++
++ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
++/*
++ Skips invalid compressed data until a full flush point (see above the
++ description of deflate with Z_FULL_FLUSH) can be found, or until all
++ available input is skipped. No output is provided.
++
++ inflateSync returns Z_OK if a full flush point has been found, Z_BUF_ERROR
++ if no more input was provided, Z_DATA_ERROR if no flush point has been found,
++ or Z_STREAM_ERROR if the stream structure was inconsistent. In the success
++ case, the application may save the current current value of total_in which
++ indicates where valid compressed data was found. In the error case, the
++ application may repeatedly call inflateSync, providing more input each time,
++ until success or end of the input data.
++*/
++
++ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest,
++ z_streamp source));
++/*
++ Sets the destination stream as a complete copy of the source stream.
++
++ This function can be useful when randomly accessing a large stream. The
++ first pass through the stream can periodically record the inflate state,
++ allowing restarting inflate at those points when randomly accessing the
++ stream.
++
++ inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
++ enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
++ (such as zalloc being NULL). msg is left unchanged in both source and
++ destination.
++*/
++
++ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));
++/*
++ This function is equivalent to inflateEnd followed by inflateInit,
++ but does not free and reallocate all the internal decompression state.
++ The stream will keep attributes that may have been set by inflateInit2.
++
++ inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
++ stream state was inconsistent (such as zalloc or state being NULL).
++*/
++
++ZEXTERN int ZEXPORT inflatePrime OF((z_streamp strm,
++ int bits,
++ int value));
++/*
++ This function inserts bits in the inflate input stream. The intent is
++ that this function is used to start inflating at a bit position in the
++ middle of a byte. The provided bits will be used before any bytes are used
++ from next_in. This function should only be used with raw inflate, and
++ should be used before the first inflate() call after inflateInit2() or
++ inflateReset(). bits must be less than or equal to 16, and that many of the
++ least significant bits of value will be inserted in the input.
++
++ inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source
++ stream state was inconsistent.
++*/
++
++ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm,
++ gz_headerp head));
++/*
++ inflateGetHeader() requests that gzip header information be stored in the
++ provided gz_header structure. inflateGetHeader() may be called after
++ inflateInit2() or inflateReset(), and before the first call of inflate().
++ As inflate() processes the gzip stream, head->done is zero until the header
++ is completed, at which time head->done is set to one. If a zlib stream is
++ being decoded, then head->done is set to -1 to indicate that there will be
++ no gzip header information forthcoming. Note that Z_BLOCK can be used to
++ force inflate() to return immediately after header processing is complete
++ and before any actual data is decompressed.
++
++ The text, time, xflags, and os fields are filled in with the gzip header
++ contents. hcrc is set to true if there is a header CRC. (The header CRC
++ was valid if done is set to one.) If extra is not Z_NULL, then extra_max
++ contains the maximum number of bytes to write to extra. Once done is true,
++ extra_len contains the actual extra field length, and extra contains the
++ extra field, or that field truncated if extra_max is less than extra_len.
++ If name is not Z_NULL, then up to name_max characters are written there,
++ terminated with a zero unless the length is greater than name_max. If
++ comment is not Z_NULL, then up to comm_max characters are written there,
++ terminated with a zero unless the length is greater than comm_max. When
++ any of extra, name, or comment are not Z_NULL and the respective field is
++ not present in the header, then that field is set to Z_NULL to signal its
++ absence. This allows the use of deflateSetHeader() with the returned
++ structure to duplicate the header. However if those fields are set to
++ allocated memory, then the application will need to save those pointers
++ elsewhere so that they can be eventually freed.
++
++ If inflateGetHeader is not used, then the header information is simply
++ discarded. The header is always checked for validity, including the header
++ CRC if present. inflateReset() will reset the process to discard the header
++ information. The application would need to call inflateGetHeader() again to
++ retrieve the header from the next gzip stream.
++
++ inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
++ stream state was inconsistent.
++*/
++
++/*
++ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits,
++ unsigned char FAR *window));
++
++ Initialize the internal stream state for decompression using inflateBack()
++ calls. The fields zalloc, zfree and opaque in strm must be initialized
++ before the call. If zalloc and zfree are Z_NULL, then the default library-
++ derived memory allocation routines are used. windowBits is the base two
++ logarithm of the window size, in the range 8..15. window is a caller
++ supplied buffer of that size. Except for special applications where it is
++ assured that deflate was used with small window sizes, windowBits must be 15
++ and a 32K byte window must be supplied to be able to decompress general
++ deflate streams.
++
++ See inflateBack() for the usage of these routines.
++
++ inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of
++ the paramaters are invalid, Z_MEM_ERROR if the internal state could not
++ be allocated, or Z_VERSION_ERROR if the version of the library does not
++ match the version of the header file.
++*/
++
++typedef unsigned (*in_func) OF((void FAR *, unsigned char FAR * FAR *));
++typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned));
++
++ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,
++ in_func in, void FAR *in_desc,
++ out_func out, void FAR *out_desc));
++/*
++ inflateBack() does a raw inflate with a single call using a call-back
++ interface for input and output. This is more efficient than inflate() for
++ file i/o applications in that it avoids copying between the output and the
++ sliding window by simply making the window itself the output buffer. This
++ function trusts the application to not change the output buffer passed by
++ the output function, at least until inflateBack() returns.
++
++ inflateBackInit() must be called first to allocate the internal state
++ and to initialize the state with the user-provided window buffer.
++ inflateBack() may then be used multiple times to inflate a complete, raw
++ deflate stream with each call. inflateBackEnd() is then called to free
++ the allocated state.
++
++ A raw deflate stream is one with no zlib or gzip header or trailer.
++ This routine would normally be used in a utility that reads zip or gzip
++ files and writes out uncompressed files. The utility would decode the
++ header and process the trailer on its own, hence this routine expects
++ only the raw deflate stream to decompress. This is different from the
++ normal behavior of inflate(), which expects either a zlib or gzip header and
++ trailer around the deflate stream.
++
++ inflateBack() uses two subroutines supplied by the caller that are then
++ called by inflateBack() for input and output. inflateBack() calls those
++ routines until it reads a complete deflate stream and writes out all of the
++ uncompressed data, or until it encounters an error. The function's
++ parameters and return types are defined above in the in_func and out_func
++ typedefs. inflateBack() will call in(in_desc, &buf) which should return the
++ number of bytes of provided input, and a pointer to that input in buf. If
++ there is no input available, in() must return zero--buf is ignored in that
++ case--and inflateBack() will return a buffer error. inflateBack() will call
++ out(out_desc, buf, len) to write the uncompressed data buf[0..len-1]. out()
++ should return zero on success, or non-zero on failure. If out() returns
++ non-zero, inflateBack() will return with an error. Neither in() nor out()
++ are permitted to change the contents of the window provided to
++ inflateBackInit(), which is also the buffer that out() uses to write from.
++ The length written by out() will be at most the window size. Any non-zero
++ amount of input may be provided by in().
++
++ For convenience, inflateBack() can be provided input on the first call by
++ setting strm->next_in and strm->avail_in. If that input is exhausted, then
++ in() will be called. Therefore strm->next_in must be initialized before
++ calling inflateBack(). If strm->next_in is Z_NULL, then in() will be called
++ immediately for input. If strm->next_in is not Z_NULL, then strm->avail_in
++ must also be initialized, and then if strm->avail_in is not zero, input will
++ initially be taken from strm->next_in[0 .. strm->avail_in - 1].
++
++ The in_desc and out_desc parameters of inflateBack() is passed as the
++ first parameter of in() and out() respectively when they are called. These
++ descriptors can be optionally used to pass any information that the caller-
++ supplied in() and out() functions need to do their job.
++
++ On return, inflateBack() will set strm->next_in and strm->avail_in to
++ pass back any unused input that was provided by the last in() call. The
++ return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR
++ if in() or out() returned an error, Z_DATA_ERROR if there was a format
++ error in the deflate stream (in which case strm->msg is set to indicate the
++ nature of the error), or Z_STREAM_ERROR if the stream was not properly
++ initialized. In the case of Z_BUF_ERROR, an input or output error can be
++ distinguished using strm->next_in which will be Z_NULL only if in() returned
++ an error. If strm->next is not Z_NULL, then the Z_BUF_ERROR was due to
++ out() returning non-zero. (in() will always be called before out(), so
++ strm->next_in is assured to be defined if out() returns non-zero.) Note
++ that inflateBack() cannot return Z_OK.
++*/
++
++ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm));
++/*
++ All memory allocated by inflateBackInit() is freed.
++
++ inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream
++ state was inconsistent.
++*/
++
++ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void));
++/* Return flags indicating compile-time options.
++
++ Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other:
++ 1.0: size of uInt
++ 3.2: size of uLong
++ 5.4: size of voidpf (pointer)
++ 7.6: size of z_off_t
++
++ Compiler, assembler, and debug options:
++ 8: DEBUG
++ 9: ASMV or ASMINF -- use ASM code
++ 10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention
++ 11: 0 (reserved)
++
++ One-time table building (smaller code, but not thread-safe if true):
++ 12: BUILDFIXED -- build static block decoding tables when needed
++ 13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed
++ 14,15: 0 (reserved)
++
++ Library content (indicates missing functionality):
++ 16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking
++ deflate code when not needed)
++ 17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect
++ and decode gzip streams (to avoid linking crc code)
++ 18-19: 0 (reserved)
++
++ Operation variations (changes in library functionality):
++ 20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate
++ 21: FASTEST -- deflate algorithm with only one, lowest compression level
++ 22,23: 0 (reserved)
++
++ The sprintf variant used by gzprintf (zero is best):
++ 24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format
++ 25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure!
++ 26: 0 = returns value, 1 = void -- 1 means inferred string length returned
++
++ Remainder:
++ 27-31: 0 (reserved)
++ */
++
++
++ /* utility functions */
++
++/*
++ The following utility functions are implemented on top of the
++ basic stream-oriented functions. To simplify the interface, some
++ default options are assumed (compression level and memory usage,
++ standard memory allocation functions). The source code of these
++ utility functions can easily be modified if you need special options.
++*/
++
++ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen,
++ const Bytef *source, uLong sourceLen));
++/*
++ 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 at least the value returned
++ by compressBound(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.
++ compress 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.
++*/
++
++ZEXTERN int ZEXPORT lzma_compress OF((Bytef *dest, uLongf *destLen,
++ const Bytef *source, uLong sourceLen,
++ int level));
++/*
++ Compresses the source buffer into the destination buffer. The level
++ parameter has the same meaning as in deflateInit. sourceLen is the byte
++ length of the source buffer. Upon entry, destLen is the total size of the
++ destination buffer, which must be at least the value returned by
++ compressBound(sourceLen). Upon exit, destLen is the actual size of the
++ compressed buffer.
++
++ compress2 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,
++ Z_STREAM_ERROR if the level parameter is invalid.
++*/
++
++ZEXTERN uLong ZEXPORT compressBound OF((uLong sourceLen));
++/*
++ compressBound() returns an upper bound on the compressed size after
++ compress() or compress2() on sourceLen bytes. It would be used before
++ a compress() or compress2() call to allocate the destination buffer.
++*/
++
++ZEXTERN int ZEXPORT lzma_uncompress OF((Bytef *dest, uLongf *destLen,
++ const Bytef *source, uLong sourceLen));
++/*
++ Decompresses 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 large enough to hold the
++ entire uncompressed data. (The size of the uncompressed data must have
++ been saved previously by the compressor and transmitted to the decompressor
++ by some mechanism outside the scope of this compression library.)
++ Upon exit, destLen is the actual size of the compressed buffer.
++ This function can be used to decompress a whole file at once if the
++ input file is mmap'ed.
++
++ uncompress 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, or Z_DATA_ERROR if the input data was corrupted or incomplete.
++*/
++
++
++typedef voidp gzFile;
++
++ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode));
++/*
++ Opens a gzip (.gz) file for reading or writing. The mode parameter
++ is as in fopen ("rb" or "wb") but can also include a compression level
++ ("wb9") or a strategy: 'f' for filtered data as in "wb6f", 'h' for
++ Huffman only compression as in "wb1h", or 'R' for run-length encoding
++ as in "wb1R". (See the description of deflateInit2 for more information
++ about the strategy parameter.)
++
++ gzopen can be used to read a file which is not in gzip format; in this
++ case gzread will directly read from the file without decompression.
++
++ gzopen returns NULL if the file could not be opened or if there was
++ insufficient memory to allocate the (de)compression state; errno
++ can be checked to distinguish the two cases (if errno is zero, the
++ zlib error is Z_MEM_ERROR). */
++
++ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode));
++/*
++ gzdopen() associates a gzFile with the file descriptor fd. File
++ descriptors are obtained from calls like open, dup, creat, pipe or
++ fileno (in the file has been previously opened with fopen).
++ The mode parameter is as in gzopen.
++ The next call of gzclose on the returned gzFile will also close the
++ file descriptor fd, just like fclose(fdopen(fd), mode) closes the file
++ descriptor fd. If you want to keep fd open, use gzdopen(dup(fd), mode).
++ gzdopen returns NULL if there was insufficient memory to allocate
++ the (de)compression state.
++*/
++
++ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));
++/*
++ Dynamically update the compression level or strategy. See the description
++ of deflateInit2 for the meaning of these parameters.
++ gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not
++ opened for writing.
++*/
++
++ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));
++/*
++ Reads the given number of uncompressed bytes from the compressed file.
++ If the input file was not in gzip format, gzread copies the given number
++ of bytes into the buffer.
++ gzread returns the number of uncompressed bytes actually read (0 for
++ end of file, -1 for error). */
++
++ZEXTERN int ZEXPORT gzwrite OF((gzFile file,
++ voidpc buf, unsigned len));
++/*
++ Writes the given number of uncompressed bytes into the compressed file.
++ gzwrite returns the number of uncompressed bytes actually written
++ (0 in case of error).
++*/
++
++ZEXTERN int ZEXPORTVA gzprintf OF((gzFile file, const char *format, ...));
++/*
++ Converts, formats, and writes the args to the compressed file under
++ control of the format string, as in fprintf. gzprintf returns the number of
++ uncompressed bytes actually written (0 in case of error). The number of
++ uncompressed bytes written is limited to 4095. The caller should assure that
++ this limit is not exceeded. If it is exceeded, then gzprintf() will return
++ return an error (0) with nothing written. In this case, there may also be a
++ buffer overflow with unpredictable consequences, which is possible only if
++ zlib was compiled with the insecure functions sprintf() or vsprintf()
++ because the secure snprintf() or vsnprintf() functions were not available.
++*/
++
++ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));
++/*
++ Writes the given null-terminated string to the compressed file, excluding
++ the terminating null character.
++ gzputs returns the number of characters written, or -1 in case of error.
++*/
++
++ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));
++/*
++ Reads bytes from the compressed file until len-1 characters are read, or
++ a newline character is read and transferred to buf, or an end-of-file
++ condition is encountered. The string is then terminated with a null
++ character.
++ gzgets returns buf, or Z_NULL in case of error.
++*/
++
++ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c));
++/*
++ Writes c, converted to an unsigned char, into the compressed file.
++ gzputc returns the value that was written, or -1 in case of error.
++*/
++
++ZEXTERN int ZEXPORT gzgetc OF((gzFile file));
++/*
++ Reads one byte from the compressed file. gzgetc returns this byte
++ or -1 in case of end of file or error.
++*/
++
++ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file));
++/*
++ Push one character back onto the stream to be read again later.
++ Only one character of push-back is allowed. gzungetc() returns the
++ character pushed, or -1 on failure. gzungetc() will fail if a
++ character has been pushed but not read yet, or if c is -1. The pushed
++ character will be discarded if the stream is repositioned with gzseek()
++ or gzrewind().
++*/
++
++ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush));
++/*
++ Flushes all pending output into the compressed file. The parameter
++ flush is as in the deflate() function. The return value is the zlib
++ error number (see function gzerror below). gzflush returns Z_OK if
++ the flush parameter is Z_FINISH and all output could be flushed.
++ gzflush should be called only when strictly necessary because it can
++ degrade compression.
++*/
++
++ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file,
++ z_off_t offset, int whence));
++/*
++ Sets the starting position for the next gzread or gzwrite on the
++ given compressed file. The offset represents a number of bytes in the
++ uncompressed data stream. The whence parameter is defined as in lseek(2);
++ the value SEEK_END is not supported.
++ If the file is opened for reading, this function is emulated but can be
++ extremely slow. If the file is opened for writing, only forward seeks are
++ supported; gzseek then compresses a sequence of zeroes up to the new
++ starting position.
++
++ gzseek returns the resulting offset location as measured in bytes from
++ the beginning of the uncompressed stream, or -1 in case of error, in
++ particular if the file is opened for writing and the new starting position
++ would be before the current position.
++*/
++
++ZEXTERN int ZEXPORT gzrewind OF((gzFile file));
++/*
++ Rewinds the given file. This function is supported only for reading.
++
++ gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET)
++*/
++
++ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file));
++/*
++ Returns the starting position for the next gzread or gzwrite on the
++ given compressed file. This position represents a number of bytes in the
++ uncompressed data stream.
++
++ gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)
++*/
++
++ZEXTERN int ZEXPORT gzeof OF((gzFile file));
++/*
++ Returns 1 when EOF has previously been detected reading the given
++ input stream, otherwise zero.
++*/
++
++ZEXTERN int ZEXPORT gzdirect OF((gzFile file));
++/*
++ Returns 1 if file is being read directly without decompression, otherwise
++ zero.
++*/
++
++ZEXTERN int ZEXPORT gzclose OF((gzFile file));
++/*
++ Flushes all pending output if necessary, closes the compressed file
++ and deallocates all the (de)compression state. The return value is the zlib
++ error number (see function gzerror below). Note that even when an error
++ is returned the file will be closed so gzerror cannot be called.
++*/
++
++ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));
++/*
++ Returns the error message for the last error which occurred on the
++ given compressed file. errnum is set to zlib error number. If an
++ error occurred in the file system and not in the compression library,
++ errnum is set to Z_ERRNO and the application may consult errno
++ to get the exact error code.
++
++ The application must not modify the returned string and future calls to
++ this function may invalidate the returned string.
++*/
++
++ZEXTERN void ZEXPORT gzclearerr OF((gzFile file));
++/*
++ Clears the error and end-of-file flags for file. This is analogous to the
++ clearerr() function in stdio. This is useful for continuing to read a gzip
++ file that is being written concurrently.
++*/
++
++ /* checksum functions */
++
++/*
++ These functions are not related to compression but are exported
++ anyway because they might be useful in applications using the
++ compression library.
++*/
++
++ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
++/*
++ Update a running Adler-32 checksum with the bytes buf[0..len-1] and
++ return the updated checksum. If buf is NULL, this function returns
++ the required initial value for the checksum.
++ An Adler-32 checksum is almost as reliable as a CRC32 but can be computed
++ much faster. Usage example:
++
++ uLong adler = adler32(0L, Z_NULL, 0);
++
++ while (read_buffer(buffer, length) != EOF) {
++ adler = adler32(adler, buffer, length);
++ }
++ if (adler != original_adler) error();
++*/
++
++ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2,
++ z_off_t len2));
++/*
++ Combine two Adler-32 checksums into one. For two sequences of bytes, seq1
++ and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for
++ each, adler1 and adler2. adler32_combine() returns the Adler-32 checksum of
++ seq1 and seq2 concatenated, requiring only adler1, adler2, and len2.
++*/
++
++ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));
++/*
++ Update a running CRC-32 with the bytes buf[0..len-1] and return the
++ updated CRC-32. If buf is NULL, this function returns the required initial
++ value for the for the crc. Pre- and post-conditioning (one's complement) is
++ performed within this function so it shouldn't be done by the application.
++ Usage example:
++
++ uLong crc = crc32(0L, Z_NULL, 0);
++
++ while (read_buffer(buffer, length) != EOF) {
++ crc = crc32(crc, buffer, length);
++ }
++ if (crc != original_crc) error();
++*/
++
++ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, z_off_t len2));
++
++/*
++ Combine two CRC-32 check values into one. For two sequences of bytes,
++ seq1 and seq2 with lengths len1 and len2, CRC-32 check values were
++ calculated for each, crc1 and crc2. crc32_combine() returns the CRC-32
++ check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and
++ len2.
++*/
++
++
++ /* various hacks, don't look :) */
++
++/* deflateInit and inflateInit are macros to allow checking the zlib version
++ * and the compiler's view of z_stream:
++ */
++ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,
++ const char *version, int stream_size));
++ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,
++ const char *version, int stream_size));
++ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method,
++ int windowBits, int memLevel,
++ int strategy, const char *version,
++ int stream_size));
++ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits,
++ const char *version, int stream_size));
++ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits,
++ unsigned char FAR *window,
++ const char *version,
++ int stream_size));
++#define deflateInit(strm, level) \
++ deflateInit_((strm), (level), ZLIB_VERSION, sizeof(z_stream))
++#define inflateInit(strm) \
++ inflateInit_((strm), ZLIB_VERSION, sizeof(z_stream))
++#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
++ deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
++ (strategy), ZLIB_VERSION, sizeof(z_stream))
++#define inflateInit2(strm, windowBits) \
++ inflateInit2_((strm), (windowBits), ZLIB_VERSION, sizeof(z_stream))
++#define inflateBackInit(strm, windowBits, window) \
++ inflateBackInit_((strm), (windowBits), (window), \
++ ZLIB_VERSION, sizeof(z_stream))
++
++
++#if !defined(ZUTIL_H) && !defined(NO_DUMMY_DECL)
++ struct internal_state {int dummy;}; /* hack for buggy compilers */
++#endif
++
++ZEXTERN const char * ZEXPORT zError OF((int));
++ZEXTERN int ZEXPORT inflateSyncPoint OF((z_streamp z));
++ZEXTERN const uLongf * ZEXPORT get_crc_table OF((void));
++
++#ifdef __cplusplus
++}
++#endif
++
++#endif /* ZLIB_H */
projects / packages / xz.git / commitdiff