Data::Unixish::trunc - Truncate string to a certain column width


This document describes version 1.49 of Data::Unixish::trunc (from Perl distribution Data-Unixish), released on 2015-01-03.


In Perl:

 use Data::Unixish qw(lduxl);
 my @res = lduxl([trunc => {width=>4}], "123", "1234", "12345"); # => ("123", "1234", "1234")

In command line:

 % echo -e "123\n1234\n12345" | dux trunc -w 4 --format=text-simple


trunc(%args) -> [status, msg, result, meta]

Truncate string to a certain column width.

This function can handle text containing wide characters and ANSI escape codes.

Note: to truncate by character instead of column width (note that wide characters like Chinese can have width of more than 1 column in terminal), you can turn of mb option even when your text contains wide characters.

Arguments ('*' denotes required arguments):

  • ansi => bool (default: 0)

    Whether to handle ANSI escape codes.

  • in => array

    Input stream (e.g. array or filehandle).

  • mb => bool (default: 0)

    Whether to handle wide characters.

  • out => any

    Output stream (e.g. array or filehandle).

  • width* => int

Returns an enveloped result (an array).

First element (status) is an integer containing HTTP status code (200 means OK, 4xx caller error, 5xx function error). Second element (msg) is a string containing error message, or 'OK' if status is 200. Third element (result) is optional, the actual result. Fourth element (meta) is called result metadata and is optional, a hash that contains extra information.

Return value: (any) =head1 HOMEPAGE

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