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author | Mark Adler <madler@alumni.caltech.edu> | 2011-09-09 23:22:37 -0700 |
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committer | Mark Adler <madler@alumni.caltech.edu> | 2011-09-09 23:22:37 -0700 |
commit | 4b5a43a219d51066c01ff2ab86af18b967f2d0dd (patch) | |
tree | 4dcaf0cd18751d04cf638a9a6ec521990d4f2e90 /contrib/pascal/readme.txt | |
parent | 086e982175da84b3db958191031380794315f95f (diff) | |
download | zlib-1.2.0.5.tar.gz zlib-1.2.0.5.tar.bz2 zlib-1.2.0.5.zip |
zlib 1.2.0.5v1.2.0.5
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1 | |||
2 | This directory contains a Pascal (Delphi, Kylix) interface to the | ||
3 | zlib data compression library. | ||
4 | |||
5 | |||
6 | Directory listing | ||
7 | ================= | ||
8 | |||
9 | zlibd32.mak makefile for Borland C++ | ||
10 | example.pas usage example of zlib | ||
11 | zlibpas.pas the Pascal interface to zlib | ||
12 | readme.txt this file | ||
13 | |||
14 | |||
15 | Compatibility notes | ||
16 | =================== | ||
17 | |||
18 | - Although the name "zlib" would have been more normal for the | ||
19 | zlibpas unit, this name is already taken by Borland's ZLib unit. | ||
20 | This is somehow unfortunate, because that unit is not a genuine | ||
21 | interface to the full-fledged zlib functionality, but a suite of | ||
22 | class wrappers around zlib streams. Other essential features, | ||
23 | such as checksums, are missing. | ||
24 | It would have been more appropriate for that unit to have a name | ||
25 | like "ZStreams", or something similar. | ||
26 | |||
27 | - The C and zlib-supplied types int, uInt, long, uLong, etc. are | ||
28 | translated directly into Pascal types of similar sizes (Integer, | ||
29 | LongInt, etc.), to avoid namespace pollution. In particular, | ||
30 | there is no conversion of unsigned int into a Pascal unsigned | ||
31 | integer. The Word type is non-portable and has the same size | ||
32 | (16 bits) both in a 16-bit and in a 32-bit environment, unlike | ||
33 | Integer. Even if there is a 32-bit Cardinal type, there is no | ||
34 | real need for unsigned int in zlib under a 32-bit environment. | ||
35 | |||
36 | - Except for the callbacks, the zlib function interfaces are | ||
37 | assuming the calling convention normally used in Pascal | ||
38 | (__pascal for DOS and Windows16, __fastcall for Windows32). | ||
39 | Since the cdecl keyword is used, the old Turbo Pascal does | ||
40 | not work with this interface. | ||
41 | |||
42 | - The gz* function interfaces are not translated, to avoid | ||
43 | interfacing problems with the C runtime library. Besides, | ||
44 | gzprintf(gzFile file, const char *format, ...) | ||
45 | cannot be translated into Pascal. | ||
46 | |||
47 | |||
48 | Legal issues | ||
49 | ============ | ||
50 | |||
51 | The zlibpas interface is: | ||
52 | Copyright (C) 1995-2003 Jean-loup Gailly and Mark Adler. | ||
53 | Copyright (C) 1998 by Bob Dellaca. | ||
54 | Copyright (C) 2003 by Cosmin Truta. | ||
55 | |||
56 | The example program is: | ||
57 | Copyright (C) 1995-2003 by Jean-loup Gailly. | ||
58 | Copyright (C) 1998,1999,2000 by Jacques Nomssi Nzali. | ||
59 | Copyright (C) 2003 by Cosmin Truta. | ||
60 | |||
61 | This software is provided 'as-is', without any express or implied | ||
62 | warranty. In no event will the author be held liable for any damages | ||
63 | arising from the use of this software. | ||
64 | |||
65 | Permission is granted to anyone to use this software for any purpose, | ||
66 | including commercial applications, and to alter it and redistribute it | ||
67 | freely, subject to the following restrictions: | ||
68 | |||
69 | 1. The origin of this software must not be misrepresented; you must not | ||
70 | claim that you wrote the original software. If you use this software | ||
71 | in a product, an acknowledgment in the product documentation would be | ||
72 | appreciated but is not required. | ||
73 | 2. Altered source versions must be plainly marked as such, and must not be | ||
74 | misrepresented as being the original software. | ||
75 | 3. This notice may not be removed or altered from any source distribution. | ||
76 | |||