Class: RuboCop::TargetFinder

Inherits:
Object
  • Object
show all
Defined in:
lib/rubocop/target_finder.rb

Overview

This class finds target files to inspect by scanning the directory tree and picking ruby files.

Instance Method Summary collapse

Constructor Details

#initialize(config_store, options = {}) ⇒ TargetFinder

Returns a new instance of TargetFinder


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# File 'lib/rubocop/target_finder.rb', line 9

def initialize(config_store, options = {})
  @config_store = config_store
  @options = options
end

Instance Method Details

#all_cops_include ⇒ Object 


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# File 'lib/rubocop/target_finder.rb', line 141

def all_cops_include
  @config_store.for('.').for_all_cops['Include'].map(&:to_s)
end

#configured_include?(file) ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/rubocop/target_finder.rb', line 169

def configured_include?(file)
  @config_store.for('.').file_to_include?(file)
end

#debug? ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/rubocop/target_finder.rb', line 18

def debug?
  @options[:debug]
end

#excluded_dirs(base_dir) ⇒ Object 


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# File 'lib/rubocop/target_finder.rb', line 111

def excluded_dirs(base_dir)
  all_cops_config = @config_store.for(base_dir).for_all_cops
  dir_tree_excludes = all_cops_config['Exclude'].select do |pattern|
    pattern.is_a?(String) && pattern.end_with?('/**/*')
  end
  dir_tree_excludes.map { |pattern| pattern.sub(%r{/\*\*/\*$}, '') }
end

#fail_fast? ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/rubocop/target_finder.rb', line 22

def fail_fast?
  @options[:fail_fast]
end

#find(args) ⇒ Array

Generate a list of target files by expanding globbing patterns (if any). If args is empty, recursively find all Ruby source files under the current directory

Returns:

  • (Array) —

    array of file paths


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# File 'lib/rubocop/target_finder.rb', line 30

def find(args)
  return target_files_in_dir if args.empty?

  files = []

  args.uniq.each do |arg|
    files += if File.directory?(arg)
               target_files_in_dir(arg.chomp(File::SEPARATOR))
             else
               process_explicit_path(arg)
             end
  end

  files.map { |f| File.expand_path(f) }.uniq
end

#find_files(base_dir, flags) ⇒ Object

Search for files recursively starting at the given base directory using the given flags that determine how the match is made. Excluded files will be removed later by the caller, but as an optimization find_files removes the top level directories that are excluded in configuration in the normal way (dir/*/).


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# File 'lib/rubocop/target_finder.rb', line 88

def find_files(base_dir, flags)
  wanted_toplevel_dirs = toplevel_dirs(base_dir, flags) -
                         excluded_dirs(base_dir)
  wanted_toplevel_dirs.map! { |dir| dir << '/**/*' }

  pattern = if wanted_toplevel_dirs.empty?
              # We need this special case to avoid creating the pattern
              # /**/* which searches the entire file system.
              ["#{base_dir}/**/*"]
            else
              # Search the non-excluded top directories, but also add files
              # on the top level, which would otherwise not be found.
              wanted_toplevel_dirs.unshift("#{base_dir}/*")
            end
  Dir.glob(pattern, flags).select { |path| FileTest.file?(path) }
end

#force_exclusion? ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/rubocop/target_finder.rb', line 14

def force_exclusion?
  @options[:force_exclusion]
end

#included_file?(file) ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/rubocop/target_finder.rb', line 173

def included_file?(file)
  ruby_file?(file) || configured_include?(file)
end

#process_explicit_path(path) ⇒ Object 


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# File 'lib/rubocop/target_finder.rb', line 177

def process_explicit_path(path)
  files = path.include?('*') ? Dir[path] : [path]

  files.select! { |file| included_file?(file) }

  return files unless force_exclusion?

  files.reject do |file|
    config = @config_store.for(file)
    config.file_to_exclude?(file)
  end
end

#ruby_executable?(file) ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/rubocop/target_finder.rb', line 145

def ruby_executable?(file)
  return false unless File.extname(file).empty? && File.exist?(file)

  first_line = File.open(file, &:readline)
  !(first_line =~ /#!.*(#{ruby_interpreters(file).join('|')})/).nil?
rescue EOFError, ArgumentError => e
  warn("Unprocessable file #{file}: #{e.class}, #{e.message}") if debug?

  false
end

#ruby_extension?(file) ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/rubocop/target_finder.rb', line 119

def ruby_extension?(file)
  ruby_extensions.include?(File.extname(file))
end

#ruby_extensions ⇒ Object 


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# File 'lib/rubocop/target_finder.rb', line 123

def ruby_extensions
  ext_patterns = all_cops_include.select do |pattern|
    pattern.start_with?('**/*.')
  end
  ext_patterns.map { |pattern| pattern.sub('**/*', '') }
end

#ruby_file?(file) ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/rubocop/target_finder.rb', line 164

def ruby_file?(file)
  stdin? || ruby_extension?(file) || ruby_filename?(file) ||
    ruby_executable?(file)
end

#ruby_filename?(file) ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/rubocop/target_finder.rb', line 130

def ruby_filename?(file)
  ruby_filenames.include?(File.basename(file))
end

#ruby_filenames ⇒ Object 


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# File 'lib/rubocop/target_finder.rb', line 134

def ruby_filenames
  file_patterns = all_cops_include.reject do |pattern|
    pattern.start_with?('**/*.')
  end
  file_patterns.map { |pattern| pattern.sub('**/', '') }
end

#ruby_interpreters(file) ⇒ Object 


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# File 'lib/rubocop/target_finder.rb', line 156

def ruby_interpreters(file)
  @config_store.for(file).for_all_cops['RubyInterpreters']
end

#stdin? ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/rubocop/target_finder.rb', line 160

def stdin?
  @options.key?(:stdin)
end

#target_files_in_dir(base_dir = Dir.pwd) ⇒ Array

Finds all Ruby source files under the current or other supplied directory. A Ruby source file is defined as a file with the `.rb` extension or a file with no extension that has a ruby shebang line as its first line. It is possible to specify includes and excludes using the config file, so you can include other Ruby files like Rakefiles and gemspecs.

Parameters:

  • base_dir (defaults to: Dir.pwd) —

    Root directory under which to search for ruby source files

Returns:

  • (Array) —

    Array of filenames


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# File 'lib/rubocop/target_finder.rb', line 55

def target_files_in_dir(base_dir = Dir.pwd)
  # Support Windows: Backslashes from command-line -> forward slashes
  if File::ALT_SEPARATOR
    base_dir = base_dir.gsub(File::ALT_SEPARATOR, File::SEPARATOR)
  end
  all_files = find_files(base_dir, File::FNM_DOTMATCH)
  hidden_files = Set.new(all_files - find_files(base_dir, 0))
  base_dir_config = @config_store.for(base_dir)

  target_files = all_files.select do |file|
    to_inspect?(file, hidden_files, base_dir_config)
  end

  if fail_fast?
    # Most recently modified file first.
    target_files.sort_by! { |path| -Integer(File.mtime(path)) }
  else
    target_files.sort!
  end
end

#to_inspect?(file, hidden_files, base_dir_config) ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/rubocop/target_finder.rb', line 76

def to_inspect?(file, hidden_files, base_dir_config)
  return false if base_dir_config.file_to_exclude?(file)
  return true if !hidden_files.include?(file) && ruby_file?(file)

  base_dir_config.file_to_include?(file)
end

#toplevel_dirs(base_dir, flags) ⇒ Object 


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# File 'lib/rubocop/target_finder.rb', line 105

def toplevel_dirs(base_dir, flags)
  Dir.glob(File.join(base_dir, '*'), flags).select do |dir|
    File.directory?(dir) && !dir.end_with?('/.', '/..')
  end
end