NAME

App::CSVUtils::csv_sorted_rows - Check that CSV rows are sorted

VERSION

This document describes version 1.023 of App::CSVUtils::csv_sorted_rows (from Perl distribution App-CSVUtils), released on 2023-03-31.

FUNCTIONS

csv_sorted_rows

Usage:

csv_sorted_rows(%args) -> [$status_code, $reason, $payload, \%result_meta]

Check that CSV rows are sorted.

This utility checks that rows in the CSV are sorted according to specified sorting rule(s). Example input.csv:

name,age
Andy,20
Dennis,15
Ben,30
Jerry,30

Example check command:

% csv-sorted-rows input.csv --by-field name; # check if name is ascibetically sorted
ERROR 400: Rows are NOT sorted

Example input2.csv:

name,age
Andy,20
Ben,30
Dennis,15
Jerry,30

% csv-sorted-rows input2.csv --by-field name; # check if name is ascibetically sorted
Rows are sorted

% csv-sorted-rows input2.csv --by-field ~name; # check if name is ascibetically sorted in descending order
ERROR 400: Rows are NOT sorted

See csv-sort-rows for details on sorting options.

This function is not exported.

Arguments ('*' denotes required arguments):

• by_code => str|code

  Sort by using Perl code.

  $a and $b (or the first and second argument) will contain the two rows to be compared. Which are arrayrefs; or if --hash (-H) is specified, hashrefs; or if --key is specified, whatever the code in --key returns.

• by_fields => array[str]

  Sort by a list of field specifications.

  Each field specification is a field name with an optional prefix. FIELD (without prefix) means sort asciibetically ascending (smallest to largest), ~FIELD means sort asciibetically descending (largest to smallest), +FIELD means sort numerically ascending, -FIELD means sort numerically descending.

• by_sortsub => str

  Sort using a Sort::Sub routine.

  When sorting rows, usually combined with --key because most Sort::Sub routine expects a string to be compared against.

  When sorting fields, the Sort::Sub routine will get the field name as argument.

• ci => bool

  (No description)

• hash => bool

  Provide row in $_ as hashref instead of arrayref.

• input_escape_char => str

  Specify character to escape value in field in input CSV, will be passed to Text::CSV_XS.

  Defaults to \\ (backslash). Overrides --input-tsv option.

• input_filename => filename (default: "-")

  Input CSV file.

  Use - to read from stdin.

  Encoding of input file is assumed to be UTF-8.

• input_header => bool (default: 1)

  Specify whether input CSV has a header row.

  By default, the first row of the input CSV will be assumed to contain field names (and the second row contains the first data row). When you declare that input CSV does not have header row (--no-input-header), the first row of the CSV is assumed to contain the first data row. Fields will be named field1, field2, and so on.

• input_quote_char => str

  Specify field quote character in input CSV, will be passed to Text::CSV_XS.

  Defaults to " (double quote). Overrides --input-tsv option.

• input_sep_char => str

  Specify field separator character in input CSV, will be passed to Text::CSV_XS.

  Defaults to , (comma). Overrides --input-tsv option.

• input_tsv => true

  Inform that input file is in TSV (tab-separated) format instead of CSV.

  Overriden by --input-sep-char, --input-quote-char, --input-escape-char options. If one of those options is specified, then --input-tsv will be ignored.

• key => str|code

  Generate sort keys with this Perl code.

  If specified, then will compute sort keys using Perl code and sort using the keys. Relevant when sorting using --by-code or --by-sortsub. If specified, then instead of row when sorting rows, the code (or Sort::Sub routine) will receive these sort keys to sort against.

  The code will receive the row (arrayref, or if -H is specified, hashref) as the argument.

• quiet => bool

  If set to true, do not show messages.

• reverse => bool

  (No description)

• sortsub_args => hash

  Arguments to pass to Sort::Sub routine.

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/App-CSVUtils.

SOURCE

Source repository is at https://github.com/perlancar/perl-App-CSVUtils.

AUTHOR

perlancar <perlancar@cpan.org>

CONTRIBUTING

To contribute, you can send patches by email/via RT, or send pull requests on GitHub.

Most of the time, you don't need to build the distribution yourself. You can simply modify the code, then test via:

% prove -l

If you want to build the distribution (e.g. to try to install it locally on your system), you can install Dist::Zilla, Dist::Zilla::PluginBundle::Author::PERLANCAR, Pod::Weaver::PluginBundle::Author::PERLANCAR, and sometimes one or two other Dist::Zilla- and/or Pod::Weaver plugins. Any additional steps required beyond that are considered a bug and can be reported to me.

COPYRIGHT AND LICENSE

This software is copyright (c) 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016 by perlancar <perlancar@cpan.org>.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=App-CSVUtils

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.

cpanm App::CSVUtils

perl -MCPAN -e shell
install App::CSVUtils