Support existing standards packages with subfolders

[christopher-hopper]

Proposed Changes

• Search package sub-folders to a limited depth (< 4), to find PHP CodeSniffer standards
• Only add installed paths where a ruleset.xml exists in a standards sub-folder
• Update README to reflect requirements change
• Fix some spelling mistakes in comments

Motivation

I want to use your excellent installer plugin with the Drupal PHP CodeSniffer standards. Their package uses a subfolder, one deeper than the repository root, which they're unable to change. I am sure there are other examples where Standards may be one or two folders deeper than the current installer allows.

Notify

• @frenck

[christopher-hopper]

If this change or similar is accepted, allowing a slightly deeper directory tree for standards, I'll be submitting a change to the Drupal Coder module, asking them to adjust the package type from "library" to "phpcodesniffer-standard".

See this fork

• https://github.com/christopher-hopper/coder

[Potherca]

Changes look good, motivation is solid.

[christopher-hopper]

I've been using my changes with the following composer.json and it seems to be working very well:

{
  "type": "metapackage",
  "minimum-stability": "dev",
  "prefer-stable": true,
  "config": {
    "preferred-install": "dist",
    "discard-changes": true
  },
  "repositories": [
    {
      "type": "vcs",
      "url": "https://github.com/christopher-hopper/coder"
    },
    {
      "type": "vcs",
      "url": "https://github.com/christopher-hopper/phpcodesniffer-composer-installer"
    }
  ],
  "require": {
    "php": ">=5.4",
    "mouf/nodejs-installer": "~1.0"
  },
  "require-dev": {
    "dealerdirect/phpcodesniffer-composer-installer": "dev-master",
    "frenck/php-compatibility": "*",
    "drupal/coder": "dev-8.x-2.x"
  }
}

Once merged I will be submitting a pull request to the drupal/coder project so their Composer package type is changed to "type" : "phpcodesniffer-standard"

[frenck]

Awesome job!