1zipfile::encode(n)           Zip archive handling           zipfile::encode(n)
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NAME

8       zipfile::encode - Generation of zip archives
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SYNOPSIS

11       package require Tcl  8.4
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13       package require logger
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15       package require Trf
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17       package require crc32
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19       package require snit
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21       package require zlibtcl
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23       package require fileutil
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25       package require zipfile::encode  ?0.4?
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27       ::zipfile::encode ?objectName?
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29       <encoder> comment: text
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31       <encoder> file: dst owned src ?noCompress?
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33       <encoder> write archive
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DESCRIPTION

38       This package provides a class for the generation of zip archives.
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CLASS API

41       ::zipfile::encode ?objectName?
42              The  class  command  constructs encoder instances, i.e. objects.
43              The result of the command is the fully-qualified name of the in‐
44              stance command.
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46              If no objectName is specified the class will generate and use an
47              automatic name. If the objectName  was  specified,  but  is  not
48              fully qualified the command will be created in the current name‐
49              space.
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INSTANCE API

52       <encoder> comment: text
53              This method specifies the text of the global comment for the ar‐
54              chive.   The  result of the method is the empty string.  In case
55              of multiple calls to this method for the same encoder  the  data
56              from the last call prevails over all previous texts.
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58       <encoder> file: dst owned src ?noCompress?
59              This method adds a new file to the archive.  The contents of the
60              file are found in the filesystem at src, and will be  stored  in
61              the archive under path dst.  If the file is declared as owned by
62              the archive the original file will be deleted when  the  archive
63              is  constructed  and  written.  If noCompress is set to true the
64              file will not be compressed on writing. Otherwise (the  default)
65              the file is compressed if it is advantageous.  The result of the
66              method is an empty string.
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68       <encoder> write archive
69              This method takes the global comment and all  added  files,  en‐
70              codes  them  as  a zip archive and stores the result at path ar‐
71              chive in the filesystem.  All added files which  were  owned  by
72              the  archive  are deleted at this point.  On the issue of order‐
73              ing, the files are added to the archive in  the  same  order  as
74              they  were  specified via file:. Note that this behaviour is new
75              for version 0.4 and higher. Before 0.4  no  specific  order  was
76              documented. It was lexicographically sorted. The change was made
77              to support zip-based file formats which require a specific order
78              of files in the archive, for example ".epub".
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BUGS, IDEAS, FEEDBACK

81       This  document,  and the package it describes, will undoubtedly contain
82       bugs and other problems.  Please report such in the category zipfile of
83       the  Tcllib  Trackers  [http://core.tcl.tk/tcllib/reportlist].   Please
84       also report any ideas for enhancements you may have for either  package
85       and/or documentation.
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87       When proposing code changes, please provide unified diffs, i.e the out‐
88       put of diff -u.
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90       Note further that  attachments  are  strongly  preferred  over  inlined
91       patches.  Attachments  can  be  made  by  going to the Edit form of the
92       ticket immediately after its creation, and  then  using  the  left-most
93       button in the secondary navigation bar.
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KEYWORDS

96       compression, zip
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CATEGORY

99       File
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102       Copyright (c) 2008-2009 Andreas Kupries
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107tcllib                                0.4                   zipfile::encode(n)
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