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perlcritic

perlcritic documentation

Perl-Critic - GitHub

Configuration in Mega-Linter

Variable Description Default value
PERL_PERLCRITIC_ARGUMENTS User custom arguments to add in linter CLI call
Ex: -s --foo "bar"
PERL_PERLCRITIC_FILTER_REGEX_INCLUDE Custom regex including filter
Ex: (src\|lib)		 Include every file
PERL_PERLCRITIC_FILTER_REGEX_EXCLUDE Custom regex excluding filter
Ex: (test\|examples)		 Exclude no file
PERL_PERLCRITIC_CLI_LINT_MODE Override default CLI lint mode
- file: Calls the linter for each file
- list_of_files: Call the linter with the list of files as argument
- project: Call the linter from the root of the project		 {linter.cli_lint_mode}
PERL_PERLCRITIC_FILE_EXTENSIONS Allowed file extensions. "*" matches any extension, "" matches empty extension. Empty list excludes all files
Ex: [".py", ""]		 [".pl", ".pm", ".t", ""]
PERL_PERLCRITIC_FILE_NAMES_REGEX File name regex filters. Regular expression list for filtering files by their base names using regex full match. Empty list includes all files
Ex: ["Dockerfile(-.+)?", "Jenkinsfile"]		 Include every file
PERL_PERLCRITIC_PRE_COMMANDS List of bash commands to run before the linter None
PERL_PERLCRITIC_POST_COMMANDS List of bash commands to run after the linter None
PERL_PERLCRITIC_DISABLE_ERRORS Run linter but consider errors as warnings false
PERL_PERLCRITIC_DISABLE_ERRORS_IF_LESS_THAN Maximum number of errors allowed 0

Mega-Linter Flavours

This linter is available in the following flavours

Flavor Description Embedded linters Info
all Default Mega-Linter Flavor 94 Docker Image Size (tag) Docker Pulls

Behind the scenes

How are identified applicable files

  • File extensions: .pl, .pm, .t, ``
  • Detected file content (regex): #!/usr/bin/env perl, #!/usr/bin/perl

How the linting is performed

  • perlcritic is called one time by identified file

Example calls

perlcritic myfile.pl

Help content

Usage:
      perlcritic [-12345 | --brutal | --cruel | --harsh | --stern | --gentle]
                 [--severity number | name] [{-p | --profile} file | --noprofile]
                 [--top [ number ]] [--theme expression] [--include pattern]
                 [--exclude pattern] [{-s | --single-policy} pattern]
                 [--only | --noonly] [--profile-strictness {warn|fatal|quiet}]
                 [--force | --noforce] [--statistics] [--statistics-only]
                 [--count | -C] [--verbose {number | format}] [--allow-unsafe]
                 [--color | --nocolor] [--pager pager] [--quiet]
                 [--color-severity-highest color_specification]
                 [--color-severity-high color_specification]
                 [--color-severity-medium color_specification]
                 [--color-severity-low color_specification]
                 [--color-severity-lowest color_specification]
                 [--files-with-violations | -l]
                 [--files-without-violations | -L]
                 [--program-extensions file_name_extension]
                 {FILE | DIRECTORY | STDIN}

      perlcritic --profile-proto

      perlcritic { --list | --list-enabled | --list-themes | --doc pattern [...] }

      perlcritic { --help | --options | --man | --version }

Installation on mega-linter Docker image

  • Dockerfile commands :
RUN curl --retry 5 --retry-delay 5 -sL https://cpanmin.us/ | perl - -nq --no-wget Perl::Critic

Example success log

Results of perlcritic linter (version 1.138)
See documentation on https://nvuillam.github.io/mega-linter/descriptors/perl_perlcritic/
-----------------------------------------------

[SUCCESS] .automation/test/perl/perl_good_1.pl
    .automation/test/perl/perl_good_1.pl source OK

[SUCCESS] .automation/test/perl/perl_good_2
    .automation/test/perl/perl_good_2 source OK

Example error log

Results of perlcritic linter (version 1.138)
See documentation on https://nvuillam.github.io/mega-linter/descriptors/perl_perlcritic/
-----------------------------------------------

[ERROR] .automation/test/perl/perl_bad_1.pl
    Code before strictures are enabled at line 14, column 1.  See page 429 of PBP.  (Severity: 5)