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by brian
clean slate |
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/*
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This libary has been modified for use by the MySQL Archive Engine.
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-Brian Aker
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*/
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/* zlib.h -- interface of the 'zlib' general purpose compression library
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version 1.2.3, July 18th, 2005
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Copyright (C) 1995-2005 Jean-loup Gailly and Mark Adler
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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Jean-loup Gailly Mark Adler
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jloup@gzip.org madler@alumni.caltech.edu
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The data format used by the zlib library is described by RFCs (Request for
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Comments) 1950 to 1952 in the files http://www.ietf.org/rfc/rfc1950.txt
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(zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).
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*/
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1122.2.10
by Monty Taylor
Fixed all of the include guards. |
36 |
#ifndef PLUGIN_ARCHIVE_AZIO_H
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#define PLUGIN_ARCHIVE_AZIO_H
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1
by brian
clean slate |
38 |
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/* We currently allow this on all platforms */
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#define AZIO_AIO
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543
by Monty Taylor
Renamed drizzle_common again. Removed sql_common. (empty) |
42 |
#include <drizzled/common.h> |
1241.9.64
by Monty Taylor
Moved remaining non-public portions of mysys and mystrings to drizzled/internal. |
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#include "drizzled/internal/my_sys.h" |
1843.5.1
by tdavies
Changed all structs in file: plugin/archive/azio.h to classes, added constructors and removed '_st' from class names |
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#include <string.h> |
77.1.81
by Monty Taylor
Moved zlib include to not bork pread/pwrite defines on ubuntu. |
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#include <zlib.h> |
1
by brian
clean slate |
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#ifdef __cplusplus
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extern "C" { |
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#endif
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53.2.33
by Monty Taylor
More warnings fixes. |
50 |
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1
by brian
clean slate |
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/* Start of MySQL Specific Information */
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/* Some personal debugging functions */
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#define WATCHPOINT fprintf(stderr, "\nWATCHPOINT %s:%d (%s)\n", __FILE__, __LINE__,__func__);fflush(stderr);
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#define WATCHPOINT_STRING(A) fprintf(stderr, "\nWATCHPOINT %s:%d (%s) %s\n", __FILE__, __LINE__,__func__,A);fflush(stderr);
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#define WATCHPOINT_NUMBER(A) fprintf(stderr, "\nWATCHPOINT %s:%d (%s) %d\n", __FILE__, __LINE__,__func__,(int)(A));fflush(stderr);
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#define WATCHPOINT_ERRNO(A) fprintf(stderr, "\nWATCHPOINT %s:%d (%s) %s\n", __FILE__, __LINE__,__func__, strerror(A));A= 0;fflush(stderr);
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/*
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481
by Brian Aker
Remove all of uchar. |
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uint64_t + uint64_t + uint64_t + uint64_t + unsigned char
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1
by brian
clean slate |
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*/
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53.2.2
by Monty Taylor
Updated everything that needs updating to compile with -std=gnu99 -pedantic |
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#define AZMETA_BUFFER_SIZE sizeof(uint64_t) \
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+ sizeof(uint64_t) + sizeof(uint64_t) + sizeof(uint64_t) \
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1
by brian
clean slate |
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+ sizeof(unsigned int) + sizeof(unsigned int) \
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+ sizeof(unsigned int) + sizeof(unsigned int) \
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+ sizeof(unsigned char)
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#define AZHEADER_SIZE 29
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#define AZ_MAGIC_POS 0
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#define AZ_VERSION_POS 1
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#define AZ_MINOR_VERSION_POS 2
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#define AZ_BLOCK_POS 3
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#define AZ_STRATEGY_POS 4
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#define AZ_FRM_POS 5
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#define AZ_FRM_LENGTH_POS 9
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#define AZ_META_POS 13
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#define AZ_META_LENGTH_POS 17
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#define AZ_START_POS 21
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#define AZ_ROW_POS 29
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#define AZ_FLUSH_POS 37
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#define AZ_CHECK_POS 45
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#define AZ_AUTOINCREMENT_POS 53
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#define AZ_LONGEST_POS 61
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#define AZ_SHORTEST_POS 65
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#define AZ_COMMENT_POS 69
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#define AZ_COMMENT_LENGTH_POS 73
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#define AZ_DIRTY_POS 77
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/*
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Flags for state
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*/
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#define AZ_STATE_CLEAN 0
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#define AZ_STATE_DIRTY 1
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#define AZ_STATE_SAVED 2
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#define AZ_STATE_CRASHED 3
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/*
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The 'zlib' compression library provides in-memory compression and
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decompression functions, including integrity checks of the uncompressed
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data. This version of the library supports only one compression method
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(deflation) but other algorithms will be added later and will have the same
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stream interface.
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Compression can be done in a single step if the buffers are large
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enough (for example if an input file is mmap'ed), or can be done by
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repeated calls of the compression function. In the latter case, the
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application must provide more input and/or consume the output
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(providing more output space) before each call.
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The compressed data format used by default by the in-memory functions is
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the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped
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around a deflate stream, which is itself documented in RFC 1951.
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The library also supports reading and writing files in gzip (.gz) format
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with an interface similar to that of stdio using the functions that start
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with "gz". The gzip format is different from the zlib format. gzip is a
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gzip wrapper, documented in RFC 1952, wrapped around a deflate stream.
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This library can optionally read and write gzip streams in memory as well.
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The zlib format was designed to be compact and fast for use in memory
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and on communications channels. The gzip format was designed for single-
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file compression on file systems, has a larger header than zlib to maintain
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directory information, and uses a different, slower check method than zlib.
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The library does not install any signal handler. The decoder checks
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the consistency of the compressed data, so the library should never
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crash even in case of corrupted input.
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*/
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/*
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The application must update next_in and avail_in when avail_in has
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dropped to zero. It must update next_out and avail_out when avail_out
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has dropped to zero. The application must initialize zalloc, zfree and
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opaque before calling the init function. All other fields are set by the
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compression library and must not be updated by the application.
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The opaque value provided by the application will be passed as the first
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parameter for calls of zalloc and zfree. This can be useful for custom
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memory management. The compression library attaches no meaning to the
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opaque value.
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zalloc must return Z_NULL if there is not enough memory for the object.
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If zlib is used in a multi-threaded application, zalloc and zfree must be
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thread safe.
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On 16-bit systems, the functions zalloc and zfree must be able to allocate
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exactly 65536 bytes, but will not be required to allocate more than this
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if the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS,
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pointers returned by zalloc for objects of exactly 65536 bytes *must*
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have their offset normalized to zero. The default allocation function
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provided by this library ensures this (see zutil.c). To reduce memory
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requirements and avoid any allocation of 64K objects, at the expense of
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compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h).
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The fields total_in and total_out can be used for statistics or
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progress reports. After compression, total_in holds the total size of
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the uncompressed data and may be saved for use in the decompressor
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(particularly if the decompressor wants to decompress everything in
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a single step).
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*/
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/* constants */
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#define Z_NO_FLUSH 0
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#define Z_PARTIAL_FLUSH 1 /* will be removed, use Z_SYNC_FLUSH instead */ |
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#define Z_SYNC_FLUSH 2
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#define Z_FULL_FLUSH 3
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#define Z_FINISH 4
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#define Z_BLOCK 5
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/* Allowed flush values; see deflate() and inflate() below for details */
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#define Z_OK 0
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#define Z_STREAM_END 1
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#define Z_NEED_DICT 2
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#define Z_ERRNO (-1)
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#define Z_STREAM_ERROR (-2)
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#define Z_DATA_ERROR (-3)
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#define Z_MEM_ERROR (-4)
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#define Z_BUF_ERROR (-5)
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#define Z_VERSION_ERROR (-6)
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/* Return codes for the compression/decompression functions. Negative
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* values are errors, positive values are used for special but normal events.
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*/
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#define Z_NO_COMPRESSION 0
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#define Z_BEST_SPEED 1
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#define Z_BEST_COMPRESSION 9
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#define Z_DEFAULT_COMPRESSION (-1)
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/* compression levels */
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#define Z_FILTERED 1
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#define Z_HUFFMAN_ONLY 2
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#define Z_RLE 3
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#define Z_FIXED 4
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#define Z_DEFAULT_STRATEGY 0
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/* compression strategy; see deflateInit2() below for details */
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#define Z_BINARY 0
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#define Z_TEXT 1
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#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */ |
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#define Z_UNKNOWN 2
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/* Possible values of the data_type field (though see inflate()) */
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#define Z_DEFLATED 8
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/* The deflate compression method (the only one supported in this version) */
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#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */ |
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#define AZ_BUFSIZE_READ 32768
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#define AZ_BUFSIZE_WRITE 16384
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typedef enum { |
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AZ_THREAD_FINISHED, |
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AZ_THREAD_ACTIVE, |
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AZ_THREAD_DEAD
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} az_thread_type; |
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typedef enum { |
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AZ_METHOD_BLOCK, |
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AZ_METHOD_AIO, |
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53.2.2
by Monty Taylor
Updated everything that needs updating to compile with -std=gnu99 -pedantic |
224 |
AZ_METHOD_MAX
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1
by brian
clean slate |
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} az_method; |
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1843.5.1
by tdavies
Changed all structs in file: plugin/archive/azio.h to classes, added constructors and removed '_st' from class names |
227 |
typedef class azio_container azio_container; |
1
by brian
clean slate |
228 |
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1843.5.1
by tdavies
Changed all structs in file: plugin/archive/azio.h to classes, added constructors and removed '_st' from class names |
229 |
class azio_container { |
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public: |
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1
by brian
clean slate |
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int fd; |
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az_thread_type ready; |
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size_t offset; |
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size_t read_size; |
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void *buffer; |
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pthread_mutex_t thresh_mutex; |
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pthread_cond_t threshhold; |
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pthread_t mainthread; /* Thread descriptor */ |
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1843.5.1
by tdavies
Changed all structs in file: plugin/archive/azio.h to classes, added constructors and removed '_st' from class names |
239 |
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azio_container(): |
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1843.5.2
by tdavies
File: /plugin/archive/azio.h; Converted struct 'azio_container_st' to c++ class, changed name to 'azio_container' and added constructor. Converted struct 'azio_stream' to c++ class and added constructor. |
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fd(0), |
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offset(0), |
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read_size(0), |
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buffer(NULL), |
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mainthread(0) |
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1843.5.1
by tdavies
Changed all structs in file: plugin/archive/azio.h to classes, added constructors and removed '_st' from class names |
246 |
{}
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1
by brian
clean slate |
248 |
};
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250 |
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1843.5.1
by tdavies
Changed all structs in file: plugin/archive/azio.h to classes, added constructors and removed '_st' from class names |
251 |
typedef class azio_stream { |
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public: |
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1
by brian
clean slate |
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z_stream stream; |
1843.5.2
by tdavies
File: /plugin/archive/azio.h; Converted struct 'azio_container_st' to c++ class, changed name to 'azio_container' and added constructor. Converted struct 'azio_stream' to c++ class and added constructor. |
254 |
int z_err; /* error code for last stream operation */ |
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int z_eof; /* set if end of input file */ |
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int file; /* .gz file */ |
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Byte *inbuf; /* input buffer */ |
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Byte buffer1[AZ_BUFSIZE_READ]; /* input buffer */ |
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Byte buffer2[AZ_BUFSIZE_READ]; /* input buffer */ |
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Byte outbuf[AZ_BUFSIZE_WRITE]; /* output buffer */ |
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int aio_inited; /* Are we good to go */ |
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uLong crc; /* crc32 of uncompressed data */ |
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char *msg; /* error message */ |
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char mode; /* 'w' or 'r' */ |
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size_t start; /* start of compressed data in file (header skipped) */ |
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size_t in; /* bytes into deflate or inflate */ |
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size_t out; /* bytes out of deflate or inflate */ |
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size_t pos; /* bytes out of deflate or inflate */ |
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int back; /* one character push-back */ |
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int last; /* true if push-back is last character */ |
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1
by brian
clean slate |
271 |
unsigned char version; /* Version */ |
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unsigned char minor_version; /* Version */ |
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unsigned int block_size; /* Block Size */ |
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53.2.2
by Monty Taylor
Updated everything that needs updating to compile with -std=gnu99 -pedantic |
274 |
uint64_t check_point; /* Last position we checked */ |
275 |
uint64_t forced_flushes; /* Forced Flushes */ |
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uint64_t rows; /* rows */ |
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uint64_t auto_increment; /* auto increment field */ |
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1
by brian
clean slate |
278 |
unsigned int longest_row; /* Longest row */ |
279 |
unsigned int shortest_row; /* Shortest row */ |
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unsigned char dirty; /* State of file */ |
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281 |
unsigned int frm_start_pos; /* Position for start of FRM */ |
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unsigned int frm_length; /* Position for start of FRM */ |
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283 |
unsigned int comment_start_pos; /* Position for start of comment */ |
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unsigned int comment_length; /* Position for start of comment */ |
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1843.5.1
by tdavies
Changed all structs in file: plugin/archive/azio.h to classes, added constructors and removed '_st' from class names |
285 |
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1
by brian
clean slate |
286 |
#ifdef AZIO_AIO
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1843.5.1
by tdavies
Changed all structs in file: plugin/archive/azio.h to classes, added constructors and removed '_st' from class names |
287 |
azio_container container; |
1
by brian
clean slate |
288 |
#endif
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289 |
az_method method; |
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char *row_ptr; |
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1843.5.1
by tdavies
Changed all structs in file: plugin/archive/azio.h to classes, added constructors and removed '_st' from class names |
291 |
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292 |
azio_stream(): |
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293 |
z_err(0), |
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294 |
z_eof(0), |
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file(0), |
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inbuf(NULL), |
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aio_inited(0), |
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crc(0), |
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msg(NULL), |
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mode(0), |
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start(0), |
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in(0), |
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out(0), |
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pos(0), |
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back(0), |
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last(0), |
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version(0), |
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308 |
minor_version(0), |
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309 |
block_size(0), |
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310 |
check_point(0), |
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311 |
forced_flushes(0), |
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312 |
rows(0), |
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313 |
auto_increment(0), |
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314 |
longest_row(0), |
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315 |
shortest_row(0), |
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316 |
dirty(0), |
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317 |
frm_start_pos(0), |
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318 |
frm_length(0), |
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319 |
comment_start_pos(0), |
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320 |
comment_length(0), |
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321 |
row_ptr(NULL) |
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322 |
{
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323 |
memset(buffer1, 0, AZ_BUFSIZE_READ); |
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324 |
memset(buffer2, 0, AZ_BUFSIZE_READ); |
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325 |
memset(outbuf, 0, AZ_BUFSIZE_WRITE); |
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326 |
}
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327 |
||
1
by brian
clean slate |
328 |
} azio_stream; |
329 |
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330 |
/* basic functions */
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331 |
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332 |
int azopen(azio_stream *s, const char *path, int Flags, az_method method); |
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333 |
/*
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334 |
Opens a gzip (.gz) file for reading or writing. The mode parameter
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335 |
is as in fopen ("rb" or "wb") but can also include a compression level
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336 |
("wb9") or a strategy: 'f' for filtered data as in "wb6f", 'h' for
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337 |
Huffman only compression as in "wb1h", or 'R' for run-length encoding
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338 |
as in "wb1R". (See the description of deflateInit2 for more information
|
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339 |
about the strategy parameter.)
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340 |
||
341 |
azopen can be used to read a file which is not in gzip format; in this
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342 |
case gzread will directly read from the file without decompression.
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343 |
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344 |
azopen returns NULL if the file could not be opened or if there was
|
|
345 |
insufficient memory to allocate the (de)compression state; errno
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|
346 |
can be checked to distinguish the two cases (if errno is zero, the
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347 |
zlib error is Z_MEM_ERROR). */
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348 |
||
1241.9.1
by Monty Taylor
Removed global.h. Fixed all the headers. |
349 |
int azdopen(azio_stream *s,int fd, int Flags); |
1
by brian
clean slate |
350 |
/*
|
351 |
azdopen() associates a azio_stream with the file descriptor fd. File
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352 |
descriptors are obtained from calls like open, dup, creat, pipe or
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353 |
fileno (in the file has been previously opened with fopen).
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354 |
The mode parameter is as in azopen.
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355 |
The next call of gzclose on the returned azio_stream will also close the
|
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356 |
file descriptor fd, just like fclose(fdopen(fd), mode) closes the file
|
|
357 |
descriptor fd. If you want to keep fd open, use azdopen(dup(fd), mode).
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358 |
azdopen returns NULL if there was insufficient memory to allocate
|
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359 |
the (de)compression state.
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360 |
*/
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361 |
||
362 |
extern int azflush(azio_stream *file, int flush); |
|
363 |
/*
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|
364 |
Flushes all pending output into the compressed file. The parameter
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|
365 |
flush is as in the deflate() function. The return value is the zlib
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|
366 |
error number (see function gzerror below). gzflush returns Z_OK if
|
|
367 |
the flush parameter is Z_FINISH and all output could be flushed.
|
|
368 |
gzflush should be called only when strictly necessary because it can
|
|
369 |
degrade compression.
|
|
370 |
*/
|
|
371 |
||
372 |
extern size_t azseek (azio_stream *file, |
|
373 |
size_t offset, int whence); |
|
374 |
/*
|
|
375 |
Sets the starting position for the next gzread or gzwrite on the
|
|
376 |
given compressed file. The offset represents a number of bytes in the
|
|
377 |
uncompressed data stream. The whence parameter is defined as in lseek(2);
|
|
378 |
the value SEEK_END is not supported.
|
|
379 |
If the file is opened for reading, this function is emulated but can be
|
|
380 |
extremely slow. If the file is opened for writing, only forward seeks are
|
|
381 |
supported; gzseek then compresses a sequence of zeroes up to the new
|
|
382 |
starting position.
|
|
383 |
||
384 |
gzseek returns the resulting offset location as measured in bytes from
|
|
385 |
the beginning of the uncompressed stream, or -1 in case of error, in
|
|
386 |
particular if the file is opened for writing and the new starting position
|
|
387 |
would be before the current position.
|
|
388 |
*/
|
|
389 |
||
390 |
extern size_t aztell(azio_stream *file); |
|
391 |
/*
|
|
392 |
Returns the starting position for the next gzread or gzwrite on the
|
|
393 |
given compressed file. This position represents a number of bytes in the
|
|
394 |
uncompressed data stream.
|
|
395 |
||
396 |
gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)
|
|
397 |
*/
|
|
398 |
||
399 |
extern int azclose(azio_stream *file); |
|
400 |
/*
|
|
401 |
Flushes all pending output if necessary, closes the compressed file
|
|
402 |
and deallocates all the (de)compression state. The return value is the zlib
|
|
403 |
error number (see function gzerror below).
|
|
404 |
*/
|
|
405 |
||
406 |
int azread_init(azio_stream *s); |
|
407 |
size_t azwrite_row(azio_stream *s, void *buf, unsigned int len); |
|
408 |
size_t azread_row(azio_stream *s, int *error); |
|
409 |
||
1067.1.9
by Stewart Smith
make ARCHIVE engine write table proto into 'frm' part of ARZ header. i.e. table proto now in .ARZ like the FRM was in MySQL (except cleaner, as we're not reading it off disk, we just deal with the data structure directly). |
410 |
extern int azwrite_frm (azio_stream *s, const char *blob, unsigned int length); |
1
by brian
clean slate |
411 |
extern int azread_frm (azio_stream *s, char *blob); |
1116.1.1
by Brian Aker
Fix for Stewart's patch (includes hack to solve MAX rows problem). |
412 |
extern int azwrite_comment (azio_stream *s, const char *blob, unsigned int length); |
1
by brian
clean slate |
413 |
extern int azread_comment (azio_stream *s, char *blob); |
414 |
||
415 |
#ifdef __cplusplus
|
|
416 |
}
|
|
417 |
#endif
|
|
418 |
||
1122.2.10
by Monty Taylor
Fixed all of the include guards. |
419 |
#endif /* PLUGIN_ARCHIVE_AZIO_H */ |