Class: Pathname

Inherits:
Object show all
Includes:
Comparable
Defined in:
opal/stdlib/pathname.rb

Overview

Portions from Author:: Tanaka Akira [email protected]

Constant Summary

SEPARATOR_PAT = 
/#{Regexp.quote File::SEPARATOR}/
SAME_PATHS = 
if File::FNM_SYSCASE.nonzero?
  # Avoid #zero? here because #casecmp can return nil.
  proc {|a, b| a.casecmp(b) == 0}
else
  proc {|a, b| a == b}
end

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ Pathname

Returns a new instance of Pathname

Raises:

  • (ArgumentError) 


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# File 'opal/stdlib/pathname.rb', line 8

def initialize(path)
  if Pathname === path
    @path = path.path.to_s
  elsif path.respond_to?(:to_path)
    @path = path.to_path
  elsif path.is_a?(String)
    @path = path
  elsif path.nil?
    raise TypeError, 'no implicit conversion of nil into String'
  else
    raise TypeError, "no implicit conversion of #{path.class} into String"
  end
  raise ArgumentError if @path == "\0"
end

Instance Attribute Details

#path ⇒ Object (readonly)

Returns the value of attribute path



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# File 'opal/stdlib/pathname.rb', line 23

def path
  @path
end

Instance Method Details

#+(other) ⇒ Object 



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# File 'opal/stdlib/pathname.rb', line 81

def +(other)
  other = Pathname.new(other) unless Pathname === other
  Pathname.new(plus(@path, other.to_s))
end

#<=>(other) ⇒ Object 



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# File 'opal/stdlib/pathname.rb', line 160

def <=>(other)
  self.path <=> other.path
end

#==(other) ⇒ Object Also known as: eql?, === 



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# File 'opal/stdlib/pathname.rb', line 25

def == other
  other.path == @path
end

#absolute? ⇒ Boolean

Returns:



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# File 'opal/stdlib/pathname.rb', line 29

def absolute?
  !relative?
end

#basename ⇒ Object 



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# File 'opal/stdlib/pathname.rb', line 148

def basename
  Pathname.new(File.basename(@path))
end

#chop_basename(path) ⇒ Object

:nodoc:



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# File 'opal/stdlib/pathname.rb', line 41

def chop_basename(path) # :nodoc:
  base = File.basename(path)
  # ruby uses /^#{SEPARATOR_PAT}?$/o but having issues with interpolation
  if Regexp.new("^#{Pathname::SEPARATOR_PAT.source}?$") =~ base
    return nil
  else
    return path[0, path.rindex(base)], base
  end
end

#cleanpath ⇒ Object 



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# File 'opal/stdlib/pathname.rb', line 65

def cleanpath
  `return Opal.normalize(#@path)`
end

#directory? ⇒ Boolean

Returns:



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# File 'opal/stdlib/pathname.rb', line 152

def directory?
  File.directory?(@path)
end

#dirname ⇒ Object 



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# File 'opal/stdlib/pathname.rb', line 144

def dirname
  Pathname.new(File.dirname(@path))
end

#entries ⇒ Object 



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# File 'opal/stdlib/pathname.rb', line 213

def entries
  Dir.entries(@path).map {|f| self.class.new(f) }
end

#expand_path ⇒ Object 



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# File 'opal/stdlib/pathname.rb', line 77

def expand_path
  File.expand_path @path
end

#extname ⇒ Object 



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# File 'opal/stdlib/pathname.rb', line 156

def extname
  File.extname(@path)
end

#hash ⇒ Object 



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# File 'opal/stdlib/pathname.rb', line 73

def hash
  @path
end

#join(*args) ⇒ Object 



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# File 'opal/stdlib/pathname.rb', line 127

def join(*args)
  return self if args.empty?
  result = args.pop
  result = Pathname.new(result) unless Pathname === result
  return result if result.absolute?
  args.reverse_each {|arg|
    arg = Pathname.new(arg) unless Pathname === arg
    result = arg + result
    return result if result.absolute?
  }
  self + result
end

#parent ⇒ Object 



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# File 'opal/stdlib/pathname.rb', line 55

def parent
  new_path = @path.sub(%r{/([^/]+/?$)}, '')
  new_path = absolute? ? '/' : '.' if new_path == ''
  Pathname.new(new_path)
end

#plus(path1, path2) ⇒ Object

-> path # :nodoc:



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# File 'opal/stdlib/pathname.rb', line 86

def plus(path1, path2) # -> path # :nodoc:
  prefix2 = path2
  index_list2 = []
  basename_list2 = []
  while r2 = chop_basename(prefix2)
    prefix2, basename2 = r2
    index_list2.unshift prefix2.length
    basename_list2.unshift basename2
  end
  return path2 if prefix2 != ''
  prefix1 = path1
  while true
    while !basename_list2.empty? && basename_list2.first == '.'
      index_list2.shift
      basename_list2.shift
    end
    break unless r1 = chop_basename(prefix1)
    prefix1, basename1 = r1
    next if basename1 == '.'
    if basename1 == '..' || basename_list2.empty? || basename_list2.first != '..'
      prefix1 = prefix1 + basename1
      break
    end
    index_list2.shift
    basename_list2.shift
  end
  r1 = chop_basename(prefix1)
  if !r1 && /#{SEPARATOR_PAT}/o =~ File.basename(prefix1)
    while !basename_list2.empty? && basename_list2.first == '..'
      index_list2.shift
      basename_list2.shift
    end
  end
  if !basename_list2.empty?
    suffix2 = path2[index_list2.first..-1]
    r1 ? File.join(prefix1, suffix2) : prefix1 + suffix2
  else
    r1 ? prefix1 : File.dirname(prefix1)
  end
end

#relative? ⇒ Boolean

Returns:



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# File 'opal/stdlib/pathname.rb', line 33

def relative?
  path = @path
  while r = chop_basename(path)
    path, = r
  end
  path == ''
end

#relative_path_from(base_directory) ⇒ Object 



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# File 'opal/stdlib/pathname.rb', line 177

def relative_path_from(base_directory)
  dest_directory = self.cleanpath.to_s
  base_directory = base_directory.cleanpath.to_s
  dest_prefix = dest_directory
  dest_names = []
  while r = chop_basename(dest_prefix)
    dest_prefix, basename = r
    dest_names.unshift basename if basename != '.'
  end
  base_prefix = base_directory
  base_names = []
  while r = chop_basename(base_prefix)
    base_prefix, basename = r
    base_names.unshift basename if basename != '.'
  end
  unless SAME_PATHS[dest_prefix, base_prefix]
    raise ArgumentError, "different prefix: #{dest_prefix.inspect} and #{base_directory.inspect}"
  end
  while !dest_names.empty? &&
        !base_names.empty? &&
        SAME_PATHS[dest_names.first, base_names.first]
    dest_names.shift
    base_names.shift
  end
  if base_names.include? '..'
    raise ArgumentError, "base_directory has ..: #{base_directory.inspect}"
  end
  base_names.fill('..')
  relpath_names = base_names + dest_names
  if relpath_names.empty?
    Pathname.new('.')
  else
    Pathname.new(File.join(*relpath_names))
  end
end

#root? ⇒ Boolean

Returns:



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# File 'opal/stdlib/pathname.rb', line 51

def root?
  @path == '/'
end

#split ⇒ Object 



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# File 'opal/stdlib/pathname.rb', line 140

def split
  [ dirname, basename ]
end

#sub(*args) ⇒ Object 



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# File 'opal/stdlib/pathname.rb', line 61

def sub(*args)
  Pathname.new(@path.sub(*args))
end

#to_path ⇒ Object Also known as: to_str, to_s 



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# File 'opal/stdlib/pathname.rb', line 69

def to_path
  @path
end