1Parse::MIME(3)        User Contributed Perl Documentation       Parse::MIME(3)
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NAME

6       Parse::MIME - Parse mime-types, match against media ranges
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SYNOPSIS

9        use Parse::MIME qw( best_match );
10        print best_match( [ qw( application/xbel+xml text/xml ) ], 'text/*;q=0.5,*/*; q=0.1' );
11        # text/xml
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DESCRIPTION

14       This module provides basic functions for handling mime-types. It can
15       handle matching mime-types against a list of media-ranges. See section
16       14.1 of the HTTP specification [RFC 2616] for a complete explanation:
17       <http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1>
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INTERFACE

20       None of the following functions are exported by default. You can use
21       the ":all" tag to import all of them into your package:
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23        use Parse::MIME ':all';
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25   parse_mime_type
26       Parses a mime-type into its component parts and returns type, subtype
27       and params, where params is a reference to a hash of all the parameters
28       for the media range:
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30        parse_mime_type 'application/xhtml;q=0.5'
31        # ( 'application', 'xhtml', { q => 0.5 } )
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33   parse_media_range
34       Media-ranges are mime-types with wild-cards and a "q" quality
35       parameter. This function works just like "parse_mime_type", but also
36       guarantees that there is a value for "q" in the params hash, supplying
37       the default value if necessary.
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39        parse_media_range 'application/xhtml'
40        # ( 'application', 'xhtml', { q => 1 } )
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42   parse_media_range_list
43       Media-range lists are comma-separated lists of media ranges. This
44       function works just like "parse_media_range", but accepts a list of
45       media ranges and returns for all of media-ranges.
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47        my @l = parse_media_range_list 'application/xhtml, text/html;q=0.7'
48        # ( 'application', 'xhtml', { q => 1 }, 'text', 'html', { q => 0.7 } )
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50   fitness_and_quality_parsed
51       Find the best match for a given mime-type (passed as the first
52       parameter) against a list of media ranges that have already been parsed
53       by "parse_media_range" (passed as a flat list). Returns the fitness
54       value and the value of the "q" quality parameter of the best match, or
55       "( -1, 0 )" if no match was found.
56
57        # for @l see above
58        fitness_and_quality_parsed( 'text/html', @l )
59        # ( 110, 0.7 )
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61   quality
62       Determines the quality ("q") of a mime-type (passed as the first
63       parameter) when compared against a media-range list string. F.ex.:
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65        quality( 'text/html', 'text/*;q=0.3, text/html;q=0.7, text/html;level=1, text/html;level=2;q=0.4, */*;q=0.5' )
66        # 0.7
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68   quality_parsed
69       Just like "quality", except the second parameter must be pre-parsed by
70       "parse_media_range_list".
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72   best_match
73       Choose the mime-type with the highest quality ("q") from a list of
74       candidates.  Takes an array of supported mime-types as the first
75       parameter and finds the best match for all the media-ranges listed in
76       header, which is passed as the second parameter. The value of header
77       must be a string that conforms to the format of the HTTP "Accept"
78       header. F.ex.:
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80        best_match( [ qw( application/xbel+xml text/xml ) ], 'text/*;q=0.5,*/*; q=0.1' )
81        # 'text/xml'
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AUTHOR

84       Aristotle Pagaltzis <pagaltzis@gmx.de>
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87       This software is copyright (c) 2018 by Aristotle Pagaltzis.
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89       This is free software; you can redistribute it and/or modify it under
90       the same terms as the Perl 5 programming language system itself.
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94perl v5.34.0                      2022-01-21                    Parse::MIME(3)
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