Add option to sort transactions by description, amount and date #133

See #133

README.md

@@ -49,6 +49,8 @@ Learn more:
                                      Column number of the money columns, starts from 1 (1 or 2 columns)
         --raw-money
                                      Don't format money column (for stocks)
+        --sort DATE|DESC|AMT
+                                     Sort file by date, description, or amount
         --date-column 3
                                      Column number of the date column, starts from 1
         --contains-header [N]

lib/reckon/app.rb

@@ -14,6 +14,7 @@ def initialize(opts = {})
 
       self.regexps = {}
       self.seen = Set.new
+      options[:sort] ||= :date
       @cli = HighLine.new
       @csv_parser = CSVParser.new(options)
       @matcher = CosineSimilarity.new(options)
@@ -168,7 +169,11 @@ def each_row_backwards
                   :money => @csv_parser.money_for(index),
                   :description => @csv_parser.description_for(index) }
       end
-      rows.sort_by { |n| [n[:date], -n[:money], n[:description]] }.each { |row| yield row }
+      rows.sort_by do |n|
+        [n[options[:sort]], -n[:money], n[:description]]
+      end.each do |row|
+        yield row
+      end
     end
 
     def print_transaction(rows, fh = $stdout)

lib/reckon/options.rb

@@ -58,6 +58,19 @@ def self.parse_command_line_options(args = ARGV, stdin = $stdin)
           options[:raw] = n
         end
 
+        options[:sort] = :date
+        opts.on("", "--sort DATE|DESC|AMT", "Sort file by date, description, or amount") do |s|
+          if s == 'DESC'
+            options[:sort] = :description
+          elsif s == 'AMT'
+            options[:sort] = :money
+          elsif s == 'DATE'
+            options[:sort] = :date
+          else
+            raise "'#{s}' is not valid. valid sort options are DATE, DESC, AMT"
+          end
+        end
+
         opts.on("", "--date-column 3", Integer,
                 "Column number of the date column, starts from 1") do |col|
           options[:date_column] = col