Class: FesomOutputDir

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

Constant Summary collapse

PATTERN_ENV_KEY = 
"SEAMORE_FESOM_FILE_PATTERN"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(d, first_year = nil, last_year = nil, verbose = true) ⇒ FesomOutputDir

Returns a new instance of FesomOutputDir.



24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
 
# File 'lib/fesom_output_dir.rb', line 24

def initialize(d, first_year=nil, last_year=nil, verbose=true)
  filepattern = FesomOutputDir.pattern  
  eligible_files = Dir[File.join(d,"*")].grep(filepattern)
  puts "# #{PATTERN_ENV_KEY}='#{filepattern.source}' is matching #{eligible_files.size} files in directory #{d}" if verbose
  
  # remove any duplicate files (which are e.g. introduced via symlinks in the output directory)
  realpath_groups = eligible_files.group_by {|f| File.realpath(f)}
  eligible_files = []
  realpath_groups.each do |realpath, given_paths|
    eligible_files << realpath
  end  
  
  @variable_files = []
  eligible_files.each do |f|
    match = filepattern.match(File.basename(f))
    if(first_year && last_year) # might be nil, i.e. read every year
      if(first_year <= match[:year].to_i && match[:year].to_i <= last_year)
        @variable_files << FesomYearlyOutputFile.new(variable_id: match[:variable_id], year: match[:year], month: match[:month], day: match[:day], path: f)
      end
    else
      @variable_files << FesomYearlyOutputFile.new(variable_id: match[:variable_id], year: match[:year], month: match[:month], day: match[:day], path: f)
    end
  end    
  
  @variable_files.sort!
end

Instance Attribute Details

#variable_files ⇒ Object (readonly)

Returns the value of attribute variable_files.



22
23
24
 
# File 'lib/fesom_output_dir.rb', line 22

def variable_files
  @variable_files
end

Class Method Details

.pattern ⇒ Object 



5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
# File 'lib/fesom_output_dir.rb', line 5

def self.pattern
  pattern_txt = '(?<variable_id>\w+)_fesom_(?<year>\d{4})(?<month>\d{2})(?<day>\d{2})\.nc\Z' # default pattern to match e.g. thetao_fesom_20420101.nc, to match e.g. hist_fesom_thetao_20420101.nc set SEAMORE_FESOM_FILE_PATTERN to '_fesom_(?<variable_id>\w+)_(?<year>\d{4})(?<month>\d{2})(?<day>\d{2})\.nc\Z'
  
  if(ENV.has_key? PATTERN_ENV_KEY)
    pattern_txt = ENV[PATTERN_ENV_KEY]
  end
  
  r = Regexp.new pattern_txt
  required_regexp_names = ["variable_id", "year", "month", "day"]
  unless (required_regexp_names-r.names).empty?
    raise "#{PATTERN_ENV_KEY} requires these named groups: #{required_regexp_names.inspect} but the pattern is: #{r.inspect}"
  end
    
  r
end

Instance Method Details

#to_s ⇒ Object 



52
53
54
 
# File 'lib/fesom_output_dir.rb', line 52

def to_s
  @variable_files.inject('') {|sum,f| sum + "#{f}\n"}
end