Class: Phlexite::Cli::Glob

Inherits:
Object
  • Object
show all
Defined in:
lib/phlexite/cli/glob.rb

Constant Summary collapse

NO_LEADING_DOT =

todo

'(?=[^\.])'
START_OF_FILENAME =

beginning of string or a slash

'(\A|\/)'
END_OF_STRING = 
'\z'

Instance Method Summary collapse

Constructor Details

#initialize(glob_string) ⇒ Glob

Returns a new instance of Glob.



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# File 'lib/phlexite/cli/glob.rb', line 10

def initialize glob_string
  @glob_string = glob_string
end

Instance Method Details

#smoosh(chars) ⇒ Object 



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# File 'lib/phlexite/cli/glob.rb', line 69

def smoosh chars
  out = []
  until chars.empty?
    char = chars.shift
    if char == "*" && chars.first == "*"
      chars.shift
      chars.shift if chars.first == "/"
      out.push("**")
    else
      out.push(char)
    end
  end
  out
end

#to_regexp ⇒ Object 



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# File 'lib/phlexite/cli/glob.rb', line 65

def to_regexp
  Regexp.new(to_regexp_string)
end

#to_regexp_string ⇒ Object 



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# File 'lib/phlexite/cli/glob.rb', line 14

def to_regexp_string
  chars = @glob_string.chars

  chars = smoosh(chars)

  curlies = 0
  escaping = false
  string = chars.map do |char|
    if escaping
      escaping = false
      char
    else
      case char
      when "**"
        "([^/]+/)*"
      when "*"
        ".*"
      when "?"
        "."
      when "."
        "\\."

      when "{"
        curlies += 1
        "("
      when "}"
        if curlies > 0
          curlies -= 1
          ")"
        else
          char
        end
      when ","
        if curlies > 0
          "|"
        else
          char
        end
      when "\\"
        escaping = true
        "\\"

      else
        char

      end
    end
  end.join
  START_OF_FILENAME + string + END_OF_STRING
end