1Tree::Simple::Visitor::UCsreeratCeoDnitrreicbTturotereeyd:T:rPSeeierm(lp3l)Deo:c:uVmiesnittaotri:o:nCreateDirectoryTree(3)
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NAME

6       Tree::Simple::Visitor::CreateDirectoryTree - A Visitor for create a set
7       of directories and files from a Tree::Simple object
8

SYNOPSIS

10         use Tree::Simple::Visitor::CreateDirectoryTree;
11
12         # create a Tree::Simple object which
13         # represents a directory heirarchy
14         my $tree = Tree::Simple->new("www/")
15                           ->addChildren(
16                               Tree::Simple->new("conf/")
17                                   ->addChildren(
18                                       Tree::Simple->new("startup.pl"),
19                                       Tree::Simple->new("httpd.conf")
20                                   ),
21                               Tree::Simple->new("cgi-bin/"),
22                               Tree::Simple->new("ht_docs/"),
23                               Tree::Simple->new("logs/")
24                                   ->addChildren(
25                                       Tree::Simple->new("error.log"),
26                                       Tree::Simple->new("access.log")
27                                   ),
28                           );
29
30         # create an instance of our visitor
31         my $visitor = Tree::Simple::Visitor::CreateDirectoryTree->new();
32
33         # pass the visitor to a Tree::Simple object
34         $tree->accept($visitor);
35
36         # the www/ directory now mirrors the structure of the tree
37

DESCRIPTION

39       This visitor can be used to create a set of directories and files from
40       a Tree::Simple object hierarchy.
41

METHODS

43       new There are no arguments to the constructor the object will be in its
44           default state. You can use the "setNodeFilter", "setFileHandler"
45           and "setDirectoryHandler" methods to customize its behavior.
46
47       setNodeFilter ($filter_function)
48           This method accepts a CODE reference as its $filter_function
49           argument and throws an exception if it is not a code reference.
50           This code reference is used to filter the tree nodes as they are
51           used to create the directory tree, it can be basically used as a
52           node pre-processor. An example usage of this might be to enforce
53           the 8.3 naming rules of DOS, or the 32 character limit of older
54           macintoshes.
55
56       setFileHandler ($file_handler)
57           This method accepts a CODE reference as its $file_handler argument
58           and throws an exception if it is not a CODE reference. This method
59           can be used to create custom file creation behavior. The default
60           behavior is to just create the file and nothing else, but by using
61           this method it is possible to implement some other custom behavior,
62           such as creating a file based on a template. The function is passed
63           the full path of the file to be created (as built by File::Spec).
64
65       setDirectoryHandler ($dir_handler)
66           This method accepts a CODE reference as its $dir_handler argument
67           and throws an exception if it is not a CODE reference. This method
68           can be used to create custom directory creation behavior. The
69           default behavior is to just create the directory and nothing else,
70           but by using this method it is possible to implement some other
71           custom behavior, such as creating a directory on a remote server.
72           The function is passed the full path of the directory to be created
73           (as built by File::Spec).
74
75       visit ($tree)
76           This is the method that is used by Tree::Simple's "accept" method.
77           It can also be used on its own, it requires the $tree argument to
78           be a Tree::Simple object (or derived from a Tree::Simple object),
79           and will throw and exception otherwise.
80
81           The tree is processed as follows:
82
83           Any node which is not a leaf is considered a directory.
84               Obviously since files themselves are leaf nodes, this makes
85               sense that non-leaves will be directories.
86
87           Any node (including leaf nodes) which ends in either the character
88           "/" or "\" is considered a directory.
89               I think it is a pretty standard convention to have directory
90               names ending in a separator. The separator itself is stripped
91               off before the directory name is passed to File::Spec where the
92               platform specific directory path is created. This means that it
93               does not matter which one you use, it will be completely cross
94               platform (at least as cross-platform as File::Spec is).
95
96           All other nodes are considered to be files.
97

BUGS

99       None that I am aware of. Of course, if you find a bug, let me know, and
100       I will be sure to fix it.
101

CODE COVERAGE

103       See the CODE COVERAGE section in Tree::Simple::VisitorFactory for more
104       information.
105

SEE ALSO

107       These Visitor classes are all subclasses of Tree::Simple::Visitor,
108       which can be found in the Tree::Simple module, you should refer to that
109       module for more information.
110

AUTHOR

112       stevan little, <stevan@iinteractive.com>
113

115       Copyright 2004, 2005 by Infinity Interactive, Inc.
116
117       <http://www.iinteractive.com>
118
119       This library is free software; you can redistribute it and/or modify it
120       under the same terms as Perl itself.
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124perl v5.28.0                     T2r0e1e6:-:0S5i-m0p3le::Visitor::CreateDirectoryTree(3)
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