1Data::Hexify(3)       User Contributed Perl Documentation      Data::Hexify(3)
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NAME

6       Data::Hexify - Perl extension for hexdumping arbitrary data
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SYNOPSIS

9         use Data::Hexify;
10         print STDERR Hexify(\$blob);
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DESCRIPTION

13       This module exports one subroutine: "Hexify".
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15       "Hexify" formats arbitrary (possible binary) data into a format
16       suitable for hex dumps in the style of "xd" or "hexl".
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18       The first, or only, argument to "Hexify" contains the data, or a
19       reference to the data, to be hexified. Hexify will return a string that
20       prints as follows:
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22         0000: 70 61 63 6b 61 67 65 20 44 61 74 61 3a 3a 48 65  package Data::He
23         0010: 78 69 66 79 3b 0a 0a 75 73 65 20 35 2e 30 30 36  xify;..use 5.006
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25       and so on. At the left is the (hexadecimal) index of the data, then a
26       number of hex bytes, followed by the chunk of data with unprintables
27       replaced by periods.
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29       The optional second argument to "Hexify" must be a hash or a hash
30       reference, containing values for any of the following parameters:
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32       first
33           The first byte of the data to be processed. Default is to start
34           from the beginning of the data.
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36       length
37           The number of bytes to be processed. Default is to proceed all
38           data.
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40       chunk
41           The number of bytes to be processed per line of output. Default is
42           16.
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44       group
45           The number of bytes to be grouped together. Default is 1 (no
46           grouping). If used, it must be a divisor of the chunk size.
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48       duplicates
49           When set, duplicate lines of output are suppressed and replaced by
50           a single line reading "**SAME**".
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52           Duplicate suppression is enabled by default.
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54       showdata
55           A reference to a subroutine that is used to produce a printable
56           string from a chunk of data. By default, a subroutine is used that
57           replaces unwanted bytes by periods.
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59           The subroutine gets the chunk of data passed as argument, and
60           should return a printable string of at most "chunksize" characters.
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62       align
63           Align the result to "chunksize" bytes. This is relevant only when
64           processing data not from the beginning. For example, when "first"
65           is 10, the result would become:
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67             0000:                ...    74 61 3a 3a 48 65            ta::He
68             0010: 78 69 66 79 3b ... 65 20 35 2e 30 30 36  xify;..use 5.006
69             ... and so on ...
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71           Alignment is on by default. Without alignment, the result would be:
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73             000a: 74 61 3a 3a 48 ... 79 3b 0a 0a 75 73 65  ta::Hexify;..use
74             001a: 20 35 2e 30 30 ... 73 65 20 73 74 72 69   5.006;.use stri
75             ... and so on ...
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77       start
78           Pretend that the data started at this byte (while in reality it
79           starts at byte "first"). The above example, with "start => 0",
80           becomes:
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82             0000: 74 61 3a 3a 48 ... 79 3b 0a 0a 75 73 65  ta::Hexify;..use
83             0010: 20 35 2e 30 30 ... 73 65 20 73 74 72 69   5.006;.use stri
84             ... and so on ...
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SEE ALSO

87       Data::Dumper, YAML.
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AUTHOR

90       Johan Vromans, <jvromans@squirrel.nl>
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93       Copyright (C) 2004 Squirrel Consultancy
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95       This library is free software; you can redistribute it and/or modify it
96       under the same terms as Perl itself, either Perl version 5.6.0 or, at
97       your option, any other version of Perl 5 you may have available.
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101perl v5.36.0                      2022-07-22                   Data::Hexify(3)
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