Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/zlib/zlib.3 @ 38:8934ac156ef5

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Allow to build with the PyPI package "clang" instead of "libclang". 1. It seems to be maintained. 2. In the FreeBSD base system there is no pre-built libclang.so. If you need this library you have to install llvm from ports additionally. 2. On FreeBSD there is no pre-built wheel "libclang" with a packaged libclang.so.
author Franz Glasner <fzglas.hg@dom66.de>
date Tue, 23 Sep 2025 10:27:15 +0200
parents b50eed0cc0ef
children
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1 .TH ZLIB 3 "22 Jan 2024"
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2 .SH NAME
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3 zlib \- compression/decompression library
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4 .SH SYNOPSIS
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5 [see
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6 .I zlib.h
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7 for full description]
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8 .SH DESCRIPTION
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9 The
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10 .I zlib
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11 library is a general purpose data compression library.
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12 The code is thread safe, assuming that the standard library functions
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13 used are thread safe, such as memory allocation routines.
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14 It provides in-memory compression and decompression functions,
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15 including integrity checks of the uncompressed data.
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16 This version of the library supports only one compression method (deflation)
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17 but other algorithms may be added later
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18 with the same stream interface.
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19 .LP
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20 Compression can be done in a single step if the buffers are large enough
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21 or can be done by repeated calls of the compression function.
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22 In the latter case,
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23 the application must provide more input and/or consume the output
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24 (providing more output space) before each call.
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25 .LP
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26 The library also supports reading and writing files in
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27 .IR gzip (1)
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28 (.gz) format
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29 with an interface similar to that of stdio.
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30 .LP
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31 The library does not install any signal handler.
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32 The decoder checks the consistency of the compressed data,
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33 so the library should never crash even in the case of corrupted input.
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34 .LP
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35 All functions of the compression library are documented in the file
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36 .IR zlib.h .
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37 The distribution source includes examples of use of the library
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38 in the files
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39 .I test/example.c
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40 and
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41 .IR test/minigzip.c,
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42 as well as other examples in the
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43 .IR examples/
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44 directory.
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45 .LP
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46 Changes to this version are documented in the file
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47 .I ChangeLog
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48 that accompanies the source.
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49 .LP
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50 .I zlib
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51 is built in to many languages and operating systems, including but not limited to
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52 Java, Python, .NET, PHP, Perl, Ruby, Swift, and Go.
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53 .LP
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54 An experimental package to read and write files in the .zip format,
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55 written on top of
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56 .I zlib
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57 by Gilles Vollant (info@winimage.com),
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58 is available at:
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59 .IP
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60 http://www.winimage.com/zLibDll/minizip.html
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61 and also in the
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62 .I contrib/minizip
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63 directory of the main
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64 .I zlib
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65 source distribution.
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66 .SH "SEE ALSO"
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67 The
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68 .I zlib
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69 web site can be found at:
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70 .IP
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71 http://zlib.net/
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72 .LP
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73 The data format used by the
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74 .I zlib
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75 library is described by RFC
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76 (Request for Comments) 1950 to 1952 in the files:
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77 .IP
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78 http://tools.ietf.org/html/rfc1950 (for the zlib header and trailer format)
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79 .br
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80 http://tools.ietf.org/html/rfc1951 (for the deflate compressed data format)
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81 .br
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82 http://tools.ietf.org/html/rfc1952 (for the gzip header and trailer format)
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83 .LP
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84 Mark Nelson wrote an article about
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85 .I zlib
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86 for the Jan. 1997 issue of Dr. Dobb's Journal;
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87 a copy of the article is available at:
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88 .IP
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89 http://marknelson.us/1997/01/01/zlib-engine/
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90 .SH "REPORTING PROBLEMS"
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91 Before reporting a problem,
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92 please check the
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93 .I zlib
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94 web site to verify that you have the latest version of
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95 .IR zlib ;
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96 otherwise,
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97 obtain the latest version and see if the problem still exists.
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98 Please read the
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99 .I zlib
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100 FAQ at:
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101 .IP
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102 http://zlib.net/zlib_faq.html
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103 .LP
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104 before asking for help.
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105 Send questions and/or comments to zlib@gzip.org,
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106 or (for the Windows DLL version) to Gilles Vollant (info@winimage.com).
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107 .SH AUTHORS AND LICENSE
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108 Version 1.3.1
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109 .LP
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110 Copyright (C) 1995-2024 Jean-loup Gailly and Mark Adler
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111 .LP
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112 This software is provided 'as-is', without any express or implied
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113 warranty. In no event will the authors be held liable for any damages
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114 arising from the use of this software.
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115 .LP
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116 Permission is granted to anyone to use this software for any purpose,
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117 including commercial applications, and to alter it and redistribute it
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118 freely, subject to the following restrictions:
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119 .LP
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120 .nr step 1 1
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121 .IP \n[step]. 3
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122 The origin of this software must not be misrepresented; you must not
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123 claim that you wrote the original software. If you use this software
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124 in a product, an acknowledgment in the product documentation would be
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125 appreciated but is not required.
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126 .IP \n+[step].
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127 Altered source versions must be plainly marked as such, and must not be
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128 misrepresented as being the original software.
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129 .IP \n+[step].
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130 This notice may not be removed or altered from any source distribution.
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131 .LP
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132 Jean-loup Gailly Mark Adler
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133 .br
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134 jloup@gzip.org madler@alumni.caltech.edu
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135 .LP
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136 The deflate format used by
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137 .I zlib
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138 was defined by Phil Katz.
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139 The deflate and
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140 .I zlib
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141 specifications were written by L. Peter Deutsch.
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142 Thanks to all the people who reported problems and suggested various
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143 improvements in
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144 .IR zlib ;
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145 who are too numerous to cite here.
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146 .LP
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147 UNIX manual page by R. P. C. Rodgers,
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148 U.S. National Library of Medicine (rodgers@nlm.nih.gov).
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149 .\" end of man page