| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | ---------------------------------------------------------------- |
| 2 | -- ZLib for Ada thick binding. -- |
| 3 | -- -- |
| 4 | -- Copyright (C) 2002-2003 Dmitriy Anisimkov -- |
| 5 | -- -- |
| 6 | -- Open source license information is in the zlib.ads file. -- |
| 7 | ---------------------------------------------------------------- |
| 8 | |
| 9 | -- $Id: zlib-thin.adb,v 1.8 2003/12/14 18:27:31 vagul Exp $ |
| 10 | |
| 11 | package body ZLib.Thin is |
| 12 | |
| 13 | ZLIB_VERSION : constant Chars_Ptr := zlibVersion; |
| 14 | |
| 15 | Z_Stream_Size : constant Int := Z_Stream'Size / System.Storage_Unit; |
| 16 | |
| 17 | -------------- |
| 18 | -- Avail_In -- |
| 19 | -------------- |
| 20 | |
| 21 | function Avail_In (Strm : in Z_Stream) return UInt is |
| 22 | begin |
| 23 | return Strm.Avail_In; |
| 24 | end Avail_In; |
| 25 | |
| 26 | --------------- |
| 27 | -- Avail_Out -- |
| 28 | --------------- |
| 29 | |
| 30 | function Avail_Out (Strm : in Z_Stream) return UInt is |
| 31 | begin |
| 32 | return Strm.Avail_Out; |
| 33 | end Avail_Out; |
| 34 | |
| 35 | ------------------ |
| 36 | -- Deflate_Init -- |
| 37 | ------------------ |
| 38 | |
| 39 | function Deflate_Init |
| 40 | (strm : Z_Streamp; |
| 41 | level : Int; |
| 42 | method : Int; |
| 43 | windowBits : Int; |
| 44 | memLevel : Int; |
| 45 | strategy : Int) |
| 46 | return Int is |
| 47 | begin |
| 48 | return deflateInit2 |
| 49 | (strm, |
| 50 | level, |
| 51 | method, |
| 52 | windowBits, |
| 53 | memLevel, |
| 54 | strategy, |
| 55 | ZLIB_VERSION, |
| 56 | Z_Stream_Size); |
| 57 | end Deflate_Init; |
| 58 | |
| 59 | ------------------ |
| 60 | -- Inflate_Init -- |
| 61 | ------------------ |
| 62 | |
| 63 | function Inflate_Init (strm : Z_Streamp; windowBits : Int) return Int is |
| 64 | begin |
| 65 | return inflateInit2 (strm, windowBits, ZLIB_VERSION, Z_Stream_Size); |
| 66 | end Inflate_Init; |
| 67 | |
| 68 | ------------------------ |
| 69 | -- Last_Error_Message -- |
| 70 | ------------------------ |
| 71 | |
| 72 | function Last_Error_Message (Strm : in Z_Stream) return String is |
| 73 | use Interfaces.C.Strings; |
| 74 | begin |
| 75 | if Strm.msg = Null_Ptr then |
| 76 | return ""; |
| 77 | else |
| 78 | return Value (Strm.msg); |
| 79 | end if; |
| 80 | end Last_Error_Message; |
| 81 | |
| 82 | ------------ |
| 83 | -- Set_In -- |
| 84 | ------------ |
| 85 | |
| 86 | procedure Set_In |
| 87 | (Strm : in out Z_Stream; |
| 88 | Buffer : in Voidp; |
| 89 | Size : in UInt) is |
| 90 | begin |
| 91 | Strm.Next_In := Buffer; |
| 92 | Strm.Avail_In := Size; |
| 93 | end Set_In; |
| 94 | |
| 95 | ------------------ |
| 96 | -- Set_Mem_Func -- |
| 97 | ------------------ |
| 98 | |
| 99 | procedure Set_Mem_Func |
| 100 | (Strm : in out Z_Stream; |
| 101 | Opaque : in Voidp; |
| 102 | Alloc : in alloc_func; |
| 103 | Free : in free_func) is |
| 104 | begin |
| 105 | Strm.opaque := Opaque; |
| 106 | Strm.zalloc := Alloc; |
| 107 | Strm.zfree := Free; |
| 108 | end Set_Mem_Func; |
| 109 | |
| 110 | ------------- |
| 111 | -- Set_Out -- |
| 112 | ------------- |
| 113 | |
| 114 | procedure Set_Out |
| 115 | (Strm : in out Z_Stream; |
| 116 | Buffer : in Voidp; |
| 117 | Size : in UInt) is |
| 118 | begin |
| 119 | Strm.Next_Out := Buffer; |
| 120 | Strm.Avail_Out := Size; |
| 121 | end Set_Out; |
| 122 | |
| 123 | -------------- |
| 124 | -- Total_In -- |
| 125 | -------------- |
| 126 | |
| 127 | function Total_In (Strm : in Z_Stream) return ULong is |
| 128 | begin |
| 129 | return Strm.Total_In; |
| 130 | end Total_In; |
| 131 | |
| 132 | --------------- |
| 133 | -- Total_Out -- |
| 134 | --------------- |
| 135 | |
| 136 | function Total_Out (Strm : in Z_Stream) return ULong is |
| 137 | begin |
| 138 | return Strm.Total_Out; |
| 139 | end Total_Out; |
| 140 | |
| 141 | end ZLib.Thin; |