Class: Chef::ChefFS::PathUtils

Inherits:
Object
  • Object
show all
Defined in:
lib/chef/chef_fs/path_utils.rb

Class Method Summary collapse

Class Method Details

.join(*parts) ⇒ Object 



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# File 'lib/chef/chef_fs/path_utils.rb', line 42

def self.join(*parts)
  return "" if parts.length == 0
  # Determine if it started with a slash
  absolute = parts[0].length == 0 || parts[0].length > 0 && parts[0] =~ /^#{regexp_path_separator}/
  # Remove leading and trailing slashes from each part so that the join will work (and the slash at the end will go away)
  parts = parts.map { |part| part.gsub(/^\/|\/$/, "") }
  # Don't join empty bits
  result = parts.select { |part| part != "" }.join("/")
  # Put the / back on
  absolute ? "/#{result}" : result
end

.regexp_path_separator ⇒ Object 



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# File 'lib/chef/chef_fs/path_utils.rb', line 58

def self.regexp_path_separator
  Chef::ChefFS::windows? ? '[/\\]' : '/'
end

.relative_to(dest, source) ⇒ Object

If you are in ‘source’, this is what you would have to type to reach ‘dest’ relative_to(‘/a/b/c/d/e’, ‘/a/b/x/y’) == ‘../../c/d/e’ relative_to(‘/a/b’, ‘/a/b’) == ”



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# File 'lib/chef/chef_fs/path_utils.rb', line 28

def self.relative_to(dest, source)
  # Skip past the common parts
  source_parts = Chef::ChefFS::PathUtils.split(source)
  dest_parts = Chef::ChefFS::PathUtils.split(dest)
  i = 0
  until i >= source_parts.length || i >= dest_parts.length || source_parts[i] != source_parts[i]
    i+=1
  end
  # dot-dot up from 'source' to the common ancestor, then
  # descend to 'dest' from the common ancestor
  result = Chef::ChefFS::PathUtils.join(*(['..']*(source_parts.length-i) + dest_parts[i,dest.length-i]))
  result == '' ? '.' : result
end

.split(path) ⇒ Object 



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# File 'lib/chef/chef_fs/path_utils.rb', line 54

def self.split(path)
  path.split(Regexp.new(regexp_path_separator))
end