1  # Redmine - project management software
   2  # Copyright (C) 2006-2011  Jean-Philippe Lang
   3  #
   4  # This program is free software; you can redistribute it and/or
   5  # modify it under the terms of the GNU General Public License
   6  # as published by the Free Software Foundation; either version 2
   7  # of the License, or (at your option) any later version.
   8  #
   9  # This program is distributed in the hope that it will be useful,
  10  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  # GNU General Public License for more details.
  13  #
  14  # You should have received a copy of the GNU General Public License
  15  # along with this program; if not, write to the Free Software
  16  # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17 
  18  module Redmine #:nodoc:
  19    module CoreExtensions #:nodoc:
  20      module String #:nodoc:
  21        # Custom string conversions
  22        module Conversions
  23          # Parses hours format and returns a float
  24          def to_hours
  25            s = self.dup
  26            s.strip!
  27            if s =~ %r{^(\d+([.,]\d+)?)h?$}
  28              s = $1
  29            else
  30              # 2:30 => 2.5
  31              s.gsub!(%r{^(\d+):(\d+)$}) { $1.to_i + $2.to_i / 60.0 }
  32              # 2h30, 2h, 30m => 2.5, 2, 0.5
  33              s.gsub!(%r{^((\d+)\s*(h|hours?))?\s*((\d+)\s*(m|min)?)?$}i) { |m| ($1 || $4) ? ($2.to_i + $5.to_i / 60.0) : m[0] }
  34            end
  35            # 2,5 => 2.5
  36            s.gsub!(',', '.')
  37            begin; Kernel.Float(s); rescue; nil; end
  38          end
  39 
  40          # Object#to_a removed in ruby1.9
  41          if RUBY_VERSION > '1.9'
  42            def to_a
  43              [self.dup]
  44            end
  45          end
  46        end
  47      end
  48    end
  49  end