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README.md

Repo Linter Build Status

Lint open source repositories for common issues.

Usage

To run against a directory, add it to the command line npx repolinter /my/code/dir.

To run against a git repository, use the --git option: npx repolinter --git https://my.git.code/awesome.

Note, if you are running a version of npm < 5.2.0, run npm install npx first.

You can also run Repo Linter locally by cloning this repository and running bin/repolinter.js with either a directory of a git repository the same as above. This is useful during development.

Examples

To quickly get started, checkout this repository and run npx repolinter against itself.

git clone https://github.com/todogroup/repolinter
npx repolinter
✔ license-file-exists: found (LICENSE)
✔ readme-file-exists: found (README.md)
✔ contributing-file-exists: found (CONTRIBUTING)
✔ code-of-conduct-file-exists: found (CODE-OF-CONDUCT)
✔ changelog-file-exists: found (CHANGELOG)
✔ readme-references-license: File README.md contains license
✔ binaries-not-present: Excluded file type doesn't exist (**/*.exe,**/*.dll)
✔ license-detectable-by-licensee: Licensee identified the license for project: Apache License 2.0
✔ test-directory-exists: found (tests)
✔ integrates-with-ci: found (.travis.yml)
✔ source-license-headers-exist: The first 5 lines of 'index.js' contain all of the requested patterns.
...
✔ github-issue-template-exists: found (ISSUE_TEMPLATE)
✔ github-pull-request-template-exists: found (PULL_REQUEST_TEMPLATE)
✔ package-metadata-exists: found (Gemfile)
✔ package-metadata-exists: found (package.json)

Command line dependencies

You will need to have Node, Ruby/Ruby-Dev, and Bundle installed in order to use repolinter. If you are installing on OS X, you will also likely need to install RVM.

The npm log-symbols package must be installed to run repolinter.

npm install log-symbols

Repolinter will use https://github.com/benbalter/licensee and https://github.com/github/linguist when installed.

Licensee will lead to a test being done to see if the project's licensee is identified by Licensee. Version 9.9.0 or later is needed, older versions will probably cause errors.

Linguist allows per-language tests to be performed.

Run bundle install to get Licensee and Linguist support.

Custom Result Formatter

By default, results will be shown as in the example format above.

When using repolinter in another project, you can set resultFormatter to a custom formatter. Any custom formatter needs to have a format function that takes a single Result argument, and returns a string.

Default ruleset

The default ruleset (rulesets/default.json) defines a set of common patterns against certain rules. i.e., the license-file-exists and readme-file-exists default rules both trigger a file-exists test but against different file patterns.

All languages:

license-file-exists

Fails if there isn't a file matching LICENSE* or COPYING* in the root of the target directory.

readme-file-exists

Fails if there isn't a file matching README* in the root of the target directory.

contributing-file-exists

Fails if there isn't a file matching CONTRIB* in the root of the target directory.

code-of-conduct-file-exists

Fails if there isn't a file matching CODEOFCONDUCT*, CODE-OF-CONDUCT* or CODE_OF_CONDUCT* in the root of the target directory.

changelog-file-exists

Fails if there isn't a file matching CHANGELOG* in the root of the target directory.

security-file-exists

Fails if there isn't a file matching SECURITY.md in the root of the target directory. See https://help.github.com/en/articles/adding-a-security-policy-to-your-repository for more details.

support-file-exists

Fails if there isn't a file matching SUPPORT* in the root of the target directory. See https://blog.github.com/2017-07-20-support-file-support/ for more details.

code-of-conduct-file-contains-email

Fails of the code of conduct file does not contain an email address.

readme-references-license

Fails if the files matching README* doesn't match the regular expression license.

binaries-not-present

Fails if *.dll or *.exe files are in the target directory.

integrates-with-ci

Fails if there isn't a file supporting a Continuous Integration tool, matching .gitlab-ci.yml, .travis.yml, appveyor.yml, circle.yml, or Jenkinsfile in the root of the target directory.

source-license-headers-exist

Produces a failure for each file matching **/*.js,!node_modules/** option if the first 5 lines don't match all the patterns copyright, all rights reserved, and licensed under.

test-directory-exists

Fails if there isn't a directory matching test* or specs in the directory tree of the target directory.

github-issue-template-exists

Fails if there isn't a file matching ISSUE_TEMPLATE* in the root of the target directory or under the .github directory. See https://blog.github.com/2016-02-17-issue-and-pull-request-templates/ for more details.

github-pull-request-template-exists

Fails if there isn't a file matching PULL_REQUEST_TEMPLATE* in the root of the target directory or under the .github directory. See https://blog.github.com/2016-02-17-issue-and-pull-request-templates/ for more details.

Configuring rules

Currently you need to create a new ruleset to add, remove, or configure rules. We'll be adding the ability to inherit from an existing ruleset to simplify this in the future.

Overriding the ruleset globally or for a project

To override the default ruleset copy rulesets/default.json to repolint.json (or repolinter.json) in the target directory, any ancestor directory of the target directory, or your user directory.

Disabling rules

To disable a rule change it's value to false, for example:

{
  "rules": {
    "all": {
      "license-file-exists:file-existence": false
    }
  }
}

Changing a rule's level

To change the level when a rule returns a failure change the first argument of the rule to error, warning, or info, for example:

{
  "rules": {
    "all": {
      "license-detectable-by-licensee": ["info"]
    }
  }
}

Configuring a rule's options

To configure a rule's options change the second argument of the rule to an object specifying the rule's options, see rules for details about each rule's options. For example:

{
  "rules": {
    "all": {
      "source-license-headers-exist:file-starts-with": ["warning", {"files": ["**/*.java"], "lineCount": 2, "patterns": ["Copyright", "All rights reserved", "Licensed under"]}]
    }
  }
}

Axioms: Running rules only in certain situations

Rules can be configured to only run if the repository passes a particular test or 'axiom'.

Axioms are defined in an axiom block in the ruleset. For example:

  "axioms": {
    "linguist":"language",
    "licensee":"license"
  }

This will run both the linguist and licensee axioms and put their output into 'language' and 'license' respectively.

The axioms are then tied to rules. For example, the following rule will only run when the linguist axiom has put the value 'java' into the language value:

    "language=java": {
      "package-metadata-exists:file-existence": ["error", {"files": ["pom.xml", "build.xml", "build.gradle"]}]
    }

You can also match any response by using a '*'; however note that currently there is no wildcard matching, ie: you couldn't match 'j*' to get both java and javascript.

There are currently three axioms defined:

Linguist

Languages are detected using Linguist which must be in your path, see command line dependencies for details.

Licensee

Licenses are detected using Licensee which must be in your path, see command line dependencies for details.

Packagers

Package systems (for example Maven, NPM and PyPI) are detected by looking for certain common filenames. See the axioms/packagers.js file for the full mapping.

Rules

The rules system is made up of rule types which can be customized to fit your needs.

directory-existence

Fails if none of the directories specified in the directories option exist. Pass in a fail-message option to further explain why the directory should exist to the user. Pass in "nocase": true in the options for a case-insensitive search.

file-contents

Fails if the content of any of the files specified in the files option doesn't match the regular expression specified in the content option. If the content is a regular expression or some other non-human-readable string, include the human-readable-content option with human-readable output. By default, no output is returned if no file exists given the inputs. Use the fail-on-non-existent option to return a failure.

file-existence

Fails if none of the files specified in the files option exist. Pass in a fail-message option to further explain why the file should exist to the user. Pass in "nocase": true in the options for a case-insensitive search.

file-not-contents

The opposite of file-contents. By default, no output is returned if no file exists given the inputs. Use the succeed-on-non-existent option to return a success result.

file-starts-with

Produces a failure for each file matching the files option if the first lineCount lines don't match all of the regular expressions specified in the patterns option. Set the skip-binary-files option to skip files that aren't text. By default, no output is returned if no file exists given the inputs. In that case, use the succeed-on-non-existent option to return a success result. Certain files can be omitted from being checked by using the skip-paths-matching option as an object with extensions and patterns array members.

file-type-exclusion

Fails if any files match the type option.

git-grep-commits

Searches Git commits for configurable blacklisted words. These words can in fact be extended regular expressions. These checks can be a bit time consuming, depending on the size of the Git history.

git-grep-log

Searches Git commit messages for configurable blacklisted words. These words can in fact be extended regular expressions. These checks can be a bit time consuming, depending on the size of the Git history.

git-list-tree

Check for blacklisted paths in Git.

git-working-tree

Checks whether the directory is managed with Git.

license-detectable-by-licensee

Fails if Licensee doesn't detect the repository's license.

This rule requires licensee in the path, see command line dependencies for details.

Implementing Rules

Rules are written in JavaScript (see the rules/ directory for examples). A rule can also be written in JSON as a 'rule set' (i.e. a configuraton of rules) allowing rules to be composed from smaller items. The rules/apache-notice.json is an example of a rule implemented in JSON.

License

This project is licensed under the Apache 2.0 license using http://reuse.software best practice.

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