Module: Orion::Find

Defined in:
lib/orion/orion_support/find/find.rb

Class Method Summary collapse

Class Method Details

.arrange_conditions(conditions) ⇒ Object 



48
49
50
51
 
# File 'lib/orion/orion_support/find/find.rb', line 48

def self.arrange_conditions(conditions)
  @comparative_conditions = conditions.select{|k,v| v =~ /(>)|(<)/ } # size: '> 999'
  @equality_conditions = Hash.diff(conditions, @comparative_conditions) # name: '.rb'
end

.condition_statement(conditions) ⇒ Object

Creates a conditional statement string with the given conditions



54
55
56
57
58
59
60
61
62
63
64
 
# File 'lib/orion/orion_support/find/find.rb', line 54

def self.condition_statement(conditions)
  arrange_conditions(conditions)
  conditions_array = conditions.has_key?(:name) ? ["file.include?(conditions[:name])"] : []
  @equality_conditions.each do |k, v|
    conditions_array << "File.send(:#{k}, file) == conditions[:#{k}]" unless k == :name
  end
  @comparative_conditions.each do |k, v|
    conditions_array << "File.send(:#{k}, file) #{conditions[k]}"
  end
  conditions_array.join(" && ")
end

.find(*paths, conditions) ⇒ Object

:yield: path



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
 
# File 'lib/orion/orion_support/find/find.rb', line 10

def find(*paths, conditions) # :yield: path
  raise I18n.t("errors.search.not_conditions_provided") if conditions.empty?
  condition_string = condition_statement(validate(conditions))
  results = []

  paths.collect!{|d| raise Errno::ENOENT unless File.exist?(d); d.dup}
  while file = paths.shift
    catch(:prune) do
      results << file.dup.taint if eval(condition_string)
      begin
        s = File.lstat(file)
      rescue Errno::ENOENT, Errno::EACCES, Errno::ENOTDIR, Errno::ELOOP, Errno::ENAMETOOLONG
        next
      end
      if s.directory? then
        begin
          fs = Dir.entries(file)
        rescue Errno::ENOENT, Errno::EACCES, Errno::ENOTDIR, Errno::ELOOP, Errno::ENAMETOOLONG
          next
        end
        fs.sort!
        fs.reverse_each {|f|
          next if f == "." or f == ".."
          f = File.join(file, f)
          paths.unshift f.untaint
        }
      end
    end
  end
  results
end

.prune ⇒ Object 



66
67
68
 
# File 'lib/orion/orion_support/find/find.rb', line 66

def prune
  throw :prune
end

.validate(conditions) ⇒ Object 



42
43
44
45
46
 
# File 'lib/orion/orion_support/find/find.rb', line 42

def self.validate(conditions)
  valid_conditions = [:name, :atime, :ctime, :mtime, :ftype, :size, :absolute_path, :basename, :directory?, :dirname, :executable?, :exists?, :extname, :file?, :readable?, :socket?, :symlink?, :writable?, :zero?]
  invalid_cond = ((valid_conditions+conditions.keys)-(valid_conditions&conditions.keys))-(valid_conditions-(valid_conditions&conditions.keys))
  invalid_cond.empty? ? conditions : raise(NoMethodError)
end