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Floris Bos 2020-03-04 16:55:40 +01:00
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----------------------------------------------------------------
-- 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, because 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;