1Config::MVP::Reader(3)User Contributed Perl DocumentationConfig::MVP::Reader(3)
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NAME

6       Config::MVP::Reader - object to read config from storage into an
7       assembler
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VERSION

10       version 2.200012
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SYNOPSIS

13         use Config::MVP::Reader::YAML; # this doesn't really exist
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15         my $reader   = Config::MVP::Reader::YAML->new;
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17         my $sequence = $reader->read_config('/etc/foobar.yml');
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DESCRIPTION

20       A Config::MVP::Reader exists to read configuration data from storage
21       (like a file) and convert that data into instructions to a
22       Config::MVP::Assembler, which will in turn convert them into a
23       Config::MVP::Sequence, the final product.
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ATTRIBUTES

26   add_cwd_to_lib
27       If true (which it is by default) then the current working directly will
28       be locally added to @INC during config loading.  This helps deal with
29       changes made in Perl v5.26.1.
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METHODS

32   read_config
33         my $sequence = $reader->read_config($location, \%arg);
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35       This method is passed a location, which has no set meaning, but should
36       be the mechanism by which the Reader is told how to locate
37       configuration.  It might be a file name, a hashref of parameters, a
38       DBH, or anything else, depending on the needs of the specific Reader
39       subclass.
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41       It is also passed a hashref of arguments, of which there is only one
42       valid argument:
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44        assembler - the Assembler object into which to read the config
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46       If no assembler argument is passed, one will be constructed by calling
47       the Reader's "build_assembler" method.
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49       Subclasses should generally not override "read_config", but should
50       instead implement a "read_into_assembler" method, described below.  If
51       a subclass does override "read_config" it should take care to respect
52       the "add_cwd_to_lib" attribute, above.
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54   read_into_assembler
55       This method should not be called directly.  It is called by
56       "read_config" with the following parameters:
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58         my $sequence = $reader->read_into_assembler( $location, $assembler );
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60       The method should read the configuration found at $location and use it
61       to instruct the $assembler (a Config::MVP::Assembler) what
62       configuration to perform.
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64       The default implementation of this method will throw an exception
65       complaining that it should have been implemented by a subclass.
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67   build_assembler
68       If no Assembler is provided to "read_config"'s "assembler" parameter,
69       this method will be called on the Reader to construct one.
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71       It must return a Config::MVP::Assembler object, and by default will
72       return an entirely generic one.
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AUTHOR

75       Ricardo Signes <rjbs@cpan.org>
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78       This software is copyright (c) 2021 by Ricardo Signes.
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80       This is free software; you can redistribute it and/or modify it under
81       the same terms as the Perl 5 programming language system itself.
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85perl v5.34.0                      2022-01-21            Config::MVP::Reader(3)
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