--- /dev/null
+----------------------------------------------------------------
+-- ZLib for Ada thick binding. --
+-- --
+-- Copyright (C) 2002-2003 Dmitriy Anisimkov --
+-- --
+-- Open source license information is in the zlib.ads file. --
+----------------------------------------------------------------
+
+-- $Id: zlib-thin.ads,v 1.11 2004/07/23 06:33:11 vagul Exp $
+
+with Interfaces.C.Strings;
+
+with System;
+
+private package ZLib.Thin is
+
+ -- From zconf.h
+
+ MAX_MEM_LEVEL : constant := 9; -- zconf.h:105
+ -- zconf.h:105
+ MAX_WBITS : constant := 15; -- zconf.h:115
+ -- 32K LZ77 window
+ -- zconf.h:115
+ SEEK_SET : constant := 8#0000#; -- zconf.h:244
+ -- Seek from beginning of file.
+ -- zconf.h:244
+ SEEK_CUR : constant := 1; -- zconf.h:245
+ -- Seek from current position.
+ -- zconf.h:245
+ SEEK_END : constant := 2; -- zconf.h:246
+ -- Set file pointer to EOF plus "offset"
+ -- zconf.h:246
+
+ type Byte is new Interfaces.C.unsigned_char; -- 8 bits
+ -- zconf.h:214
+ type UInt is new Interfaces.C.unsigned; -- 16 bits or more
+ -- zconf.h:216
+ type Int is new Interfaces.C.int;
+
+ type ULong is new Interfaces.C.unsigned_long; -- 32 bits or more
+ -- zconf.h:217
+ subtype Chars_Ptr is Interfaces.C.Strings.chars_ptr;
+
+ type ULong_Access is access ULong;
+ type Int_Access is access Int;
+
+ subtype Voidp is System.Address; -- zconf.h:232
+
+ subtype Byte_Access is Voidp;
+
+ Nul : constant Voidp := System.Null_Address;
+ -- end from zconf
+
+ Z_NO_FLUSH : constant := 8#0000#; -- zlib.h:125
+ -- zlib.h:125
+ Z_PARTIAL_FLUSH : constant := 1; -- zlib.h:126
+ -- will be removed, use
+ -- Z_SYNC_FLUSH instead
+ -- zlib.h:126
+ Z_SYNC_FLUSH : constant := 2; -- zlib.h:127
+ -- zlib.h:127
+ Z_FULL_FLUSH : constant := 3; -- zlib.h:128
+ -- zlib.h:128
+ Z_FINISH : constant := 4; -- zlib.h:129
+ -- zlib.h:129
+ Z_OK : constant := 8#0000#; -- zlib.h:132
+ -- zlib.h:132
+ Z_STREAM_END : constant := 1; -- zlib.h:133
+ -- zlib.h:133
+ Z_NEED_DICT : constant := 2; -- zlib.h:134
+ -- zlib.h:134
+ Z_ERRNO : constant := -1; -- zlib.h:135
+ -- zlib.h:135
+ Z_STREAM_ERROR : constant := -2; -- zlib.h:136
+ -- zlib.h:136
+ Z_DATA_ERROR : constant := -3; -- zlib.h:137
+ -- zlib.h:137
+ Z_MEM_ERROR : constant := -4; -- zlib.h:138
+ -- zlib.h:138
+ Z_BUF_ERROR : constant := -5; -- zlib.h:139
+ -- zlib.h:139
+ Z_VERSION_ERROR : constant := -6; -- zlib.h:140
+ -- zlib.h:140
+ Z_NO_COMPRESSION : constant := 8#0000#; -- zlib.h:145
+ -- zlib.h:145
+ Z_BEST_SPEED : constant := 1; -- zlib.h:146
+ -- zlib.h:146
+ Z_BEST_COMPRESSION : constant := 9; -- zlib.h:147
+ -- zlib.h:147
+ Z_DEFAULT_COMPRESSION : constant := -1; -- zlib.h:148
+ -- zlib.h:148
+ Z_FILTERED : constant := 1; -- zlib.h:151
+ -- zlib.h:151
+ Z_HUFFMAN_ONLY : constant := 2; -- zlib.h:152
+ -- zlib.h:152
+ Z_DEFAULT_STRATEGY : constant := 8#0000#; -- zlib.h:153
+ -- zlib.h:153
+ Z_BINARY : constant := 8#0000#; -- zlib.h:156
+ -- zlib.h:156
+ Z_ASCII : constant := 1; -- zlib.h:157
+ -- zlib.h:157
+ Z_UNKNOWN : constant := 2; -- zlib.h:158
+ -- zlib.h:158
+ Z_DEFLATED : constant := 8; -- zlib.h:161
+ -- zlib.h:161
+ Z_NULL : constant := 8#0000#; -- zlib.h:164
+ -- for initializing zalloc, zfree, opaque
+ -- zlib.h:164
+ type gzFile is new Voidp; -- zlib.h:646
+
+ type Z_Stream is private;
+
+ type Z_Streamp is access all Z_Stream; -- zlib.h:89
+
+ type alloc_func is access function
+ (Opaque : Voidp;
+ Items : UInt;
+ Size : UInt)
+ return Voidp; -- zlib.h:63
+
+ type free_func is access procedure (opaque : Voidp; address : Voidp);
+
+ function zlibVersion return Chars_Ptr;
+
+ function Deflate (strm : Z_Streamp; flush : Int) return Int;
+
+ function DeflateEnd (strm : Z_Streamp) return Int;
+
+ function Inflate (strm : Z_Streamp; flush : Int) return Int;
+
+ function InflateEnd (strm : Z_Streamp) return Int;
+
+ function deflateSetDictionary
+ (strm : Z_Streamp;
+ dictionary : Byte_Access;
+ dictLength : UInt)
+ return Int;
+
+ function deflateCopy (dest : Z_Streamp; source : Z_Streamp) return Int;
+ -- zlib.h:478
+
+ function deflateReset (strm : Z_Streamp) return Int; -- zlib.h:495
+
+ function deflateParams
+ (strm : Z_Streamp;
+ level : Int;
+ strategy : Int)
+ return Int; -- zlib.h:506
+
+ function inflateSetDictionary
+ (strm : Z_Streamp;
+ dictionary : Byte_Access;
+ dictLength : UInt)
+ return Int; -- zlib.h:548
+
+ function inflateSync (strm : Z_Streamp) return Int; -- zlib.h:565
+
+ function inflateReset (strm : Z_Streamp) return Int; -- zlib.h:580
+
+ function compress
+ (dest : Byte_Access;
+ destLen : ULong_Access;
+ source : Byte_Access;
+ sourceLen : ULong)
+ return Int; -- zlib.h:601
+
+ function compress2
+ (dest : Byte_Access;
+ destLen : ULong_Access;
+ source : Byte_Access;
+ sourceLen : ULong;
+ level : Int)
+ return Int; -- zlib.h:615
+
+ function uncompress
+ (dest : Byte_Access;
+ destLen : ULong_Access;
+ source : Byte_Access;
+ sourceLen : ULong)
+ return Int;
+
+ function gzopen (path : Chars_Ptr; mode : Chars_Ptr) return gzFile;
+
+ function gzdopen (fd : Int; mode : Chars_Ptr) return gzFile;
+
+ function gzsetparams
+ (file : gzFile;
+ level : Int;
+ strategy : Int)
+ return Int;
+
+ function gzread
+ (file : gzFile;
+ buf : Voidp;
+ len : UInt)
+ return Int;
+
+ function gzwrite
+ (file : in gzFile;
+ buf : in Voidp;
+ len : in UInt)
+ return Int;
+
+ function gzprintf (file : in gzFile; format : in Chars_Ptr) return Int;
+
+ function gzputs (file : in gzFile; s : in Chars_Ptr) return Int;
+
+ function gzgets
+ (file : gzFile;
+ buf : Chars_Ptr;
+ len : Int)
+ return Chars_Ptr;
+
+ function gzputc (file : gzFile; char : Int) return Int;
+
+ function gzgetc (file : gzFile) return Int;
+
+ function gzflush (file : gzFile; flush : Int) return Int;
+
+ function gzseek
+ (file : gzFile;
+ offset : Int;
+ whence : Int)
+ return Int;
+
+ function gzrewind (file : gzFile) return Int;
+
+ function gztell (file : gzFile) return Int;
+
+ function gzeof (file : gzFile) return Int;
+
+ function gzclose (file : gzFile) return Int;
+
+ function gzerror (file : gzFile; errnum : Int_Access) return Chars_Ptr;
+
+ function adler32
+ (adler : ULong;
+ buf : Byte_Access;
+ len : UInt)
+ return ULong;
+
+ function crc32
+ (crc : ULong;
+ buf : Byte_Access;
+ len : UInt)
+ return ULong;
+
+ function deflateInit
+ (strm : Z_Streamp;
+ level : Int;
+ version : Chars_Ptr;
+ stream_size : Int)
+ return Int;
+
+ function deflateInit2
+ (strm : Z_Streamp;
+ level : Int;
+ method : Int;
+ windowBits : Int;
+ memLevel : Int;
+ strategy : Int;
+ version : Chars_Ptr;
+ stream_size : Int)
+ return Int;
+
+ function Deflate_Init
+ (strm : Z_Streamp;
+ level : Int;
+ method : Int;
+ windowBits : Int;
+ memLevel : Int;
+ strategy : Int)
+ return Int;
+ pragma Inline (Deflate_Init);
+
+ function inflateInit
+ (strm : Z_Streamp;
+ version : Chars_Ptr;
+ stream_size : Int)
+ return Int;
+
+ function inflateInit2
+ (strm : in Z_Streamp;
+ windowBits : in Int;
+ version : in Chars_Ptr;
+ stream_size : in Int)
+ return Int;
+
+ function inflateBackInit
+ (strm : in Z_Streamp;
+ windowBits : in Int;
+ window : in Byte_Access;
+ version : in Chars_Ptr;
+ stream_size : in Int)
+ return Int;
+ -- Size of window have to be 2**windowBits.
+
+ function Inflate_Init (strm : Z_Streamp; windowBits : Int) return Int;
+ pragma Inline (Inflate_Init);
+
+ function zError (err : Int) return Chars_Ptr;
+
+ function inflateSyncPoint (z : Z_Streamp) return Int;
+
+ function get_crc_table return ULong_Access;
+
+ -- Interface to the available fields of the z_stream structure.
+ -- 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.
+
+ procedure Set_In
+ (Strm : in out Z_Stream;
+ Buffer : in Voidp;
+ Size : in UInt);
+ pragma Inline (Set_In);
+
+ procedure Set_Out
+ (Strm : in out Z_Stream;
+ Buffer : in Voidp;
+ Size : in UInt);
+ pragma Inline (Set_Out);
+
+ procedure Set_Mem_Func
+ (Strm : in out Z_Stream;
+ Opaque : in Voidp;
+ Alloc : in alloc_func;
+ Free : in free_func);
+ pragma Inline (Set_Mem_Func);
+
+ function Last_Error_Message (Strm : in Z_Stream) return String;
+ pragma Inline (Last_Error_Message);
+
+ function Avail_Out (Strm : in Z_Stream) return UInt;
+ pragma Inline (Avail_Out);
+
+ function Avail_In (Strm : in Z_Stream) return UInt;
+ pragma Inline (Avail_In);
+
+ function Total_In (Strm : in Z_Stream) return ULong;
+ pragma Inline (Total_In);
+
+ function Total_Out (Strm : in Z_Stream) return ULong;
+ pragma Inline (Total_Out);
+
+ function inflateCopy
+ (dest : in Z_Streamp;
+ Source : in Z_Streamp)
+ return Int;
+
+ function compressBound (Source_Len : in ULong) return ULong;
+
+ function deflateBound
+ (Strm : in Z_Streamp;
+ Source_Len : in ULong)
+ return ULong;
+
+ function gzungetc (C : in Int; File : in gzFile) return Int;
+
+ function zlibCompileFlags return ULong;
+
+private
+
+ type Z_Stream is record -- zlib.h:68
+ Next_In : Voidp := Nul; -- next input byte
+ Avail_In : UInt := 0; -- number of bytes available at next_in
+ Total_In : ULong := 0; -- total nb of input bytes read so far
+ Next_Out : Voidp := Nul; -- next output byte should be put there
+ Avail_Out : UInt := 0; -- remaining free space at next_out
+ Total_Out : ULong := 0; -- total nb of bytes output so far
+ msg : Chars_Ptr; -- last error message, NULL if no error
+ state : Voidp; -- not visible by applications
+ zalloc : alloc_func := null; -- used to allocate the internal state
+ zfree : free_func := null; -- used to free the internal state
+ opaque : Voidp; -- private data object passed to
+ -- zalloc and zfree
+ data_type : Int; -- best guess about the data type:
+ -- ascii or binary
+ adler : ULong; -- adler32 value of the uncompressed
+ -- data
+ reserved : ULong; -- reserved for future use
+ end record;
+
+ pragma Convention (C, Z_Stream);
+
+ pragma Import (C, zlibVersion, "zlibVersion");
+ pragma Import (C, Deflate, "deflate");
+ pragma Import (C, DeflateEnd, "deflateEnd");
+ pragma Import (C, Inflate, "inflate");
+ pragma Import (C, InflateEnd, "inflateEnd");
+ pragma Import (C, deflateSetDictionary, "deflateSetDictionary");
+ pragma Import (C, deflateCopy, "deflateCopy");
+ pragma Import (C, deflateReset, "deflateReset");
+ pragma Import (C, deflateParams, "deflateParams");
+ pragma Import (C, inflateSetDictionary, "inflateSetDictionary");
+ pragma Import (C, inflateSync, "inflateSync");
+ pragma Import (C, inflateReset, "inflateReset");
+ pragma Import (C, compress, "compress");
+ pragma Import (C, compress2, "compress2");
+ pragma Import (C, uncompress, "uncompress");
+ pragma Import (C, gzopen, "gzopen");
+ pragma Import (C, gzdopen, "gzdopen");
+ pragma Import (C, gzsetparams, "gzsetparams");
+ pragma Import (C, gzread, "gzread");
+ pragma Import (C, gzwrite, "gzwrite");
+ pragma Import (C, gzprintf, "gzprintf");
+ pragma Import (C, gzputs, "gzputs");
+ pragma Import (C, gzgets, "gzgets");
+ pragma Import (C, gzputc, "gzputc");
+ pragma Import (C, gzgetc, "gzgetc");
+ pragma Import (C, gzflush, "gzflush");
+ pragma Import (C, gzseek, "gzseek");
+ pragma Import (C, gzrewind, "gzrewind");
+ pragma Import (C, gztell, "gztell");
+ pragma Import (C, gzeof, "gzeof");
+ pragma Import (C, gzclose, "gzclose");
+ pragma Import (C, gzerror, "gzerror");
+ pragma Import (C, adler32, "adler32");
+ pragma Import (C, crc32, "crc32");
+ pragma Import (C, deflateInit, "deflateInit_");
+ pragma Import (C, inflateInit, "inflateInit_");
+ pragma Import (C, deflateInit2, "deflateInit2_");
+ pragma Import (C, inflateInit2, "inflateInit2_");
+ pragma Import (C, zError, "zError");
+ pragma Import (C, inflateSyncPoint, "inflateSyncPoint");
+ pragma Import (C, get_crc_table, "get_crc_table");
+
+ -- since zlib 1.2.0:
+
+ pragma Import (C, inflateCopy, "inflateCopy");
+ pragma Import (C, compressBound, "compressBound");
+ pragma Import (C, deflateBound, "deflateBound");
+ pragma Import (C, gzungetc, "gzungetc");
+ pragma Import (C, zlibCompileFlags, "zlibCompileFlags");
+
+ pragma Import (C, inflateBackInit, "inflateBackInit_");
+
+ -- I stopped binding the inflateBack routines, becouse realize that
+ -- it does not support zlib and gzip headers for now, and have no
+ -- symmetric deflateBack routines.
+ -- ZLib-Ada is symmetric regarding deflate/inflate data transformation
+ -- and has a similar generic callback interface for the
+ -- deflate/inflate transformation based on the regular Deflate/Inflate
+ -- routines.
+
+ -- pragma Import (C, inflateBack, "inflateBack");
+ -- pragma Import (C, inflateBackEnd, "inflateBackEnd");
+
+end ZLib.Thin;
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