Contents

require 'tempfile'
require 'active_support/core_ext/time/calculations'

module MPXJ
  # Used to read a project plan from a file
  class Reader
    # Reads a project plan from a file, and returns a Project instance
    # which provides access to the structure and attributes of the project data.
    # Note that an optional timezone can be supplied to ensue that all date-time
    # values returned are in the specified timezone.
    #
    # @param file_name [String] the name of the file to read
    # @param zone [ActiveSupport::TimeZone] an optional timezone
    # @return [Project] new Project instance
    def self.read(file_name, zone = nil)
      project = nil
      json_file = Tempfile.new([File.basename(file_name, ".*"), '.json'])
      tz = zone || Time.zone || ActiveSupport::TimeZone["UTC"]

      begin
        classpath = Dir["#{File.dirname(__FILE__)}/*.jar"].join(path_separator)
        java_output = `java -cp \"#{classpath}\" net.sf.mpxj.sample.MpxjConvert \"#{file_name}\" \"#{json_file.path}\"`
        if $?.exitstatus != 0
          report_error(java_output)
        end
        project = Project.new(json_file, tz)
      ensure
        json_file.close
        json_file.unlink
      end
      project
    end

    # @private
    def self.path_separator
      if windows?
        ";"
      else
        ":"
      end
    end

    # @private
    def self.windows?
      (/cygwin|mswin|mingw|bccwin|wince|emx/ =~ RUBY_PLATFORM) != nil
    end
    
     # @private
    def self.report_error(java_output)
      if java_output.include?('Conversion Error: ')
        message = java_output.split('Conversion Error: ')[1]
        if message.include?('Cannot read files of type:')
          raise MPXJ::ArgumentError, message
        else
          raise MPXJ::RuntimeError, message
        end
      else        
        raise MPXJ::UnknownError, "Failed to read file: #{java_output}"
      end
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
mpxj-5.5.0	lib/mpxj/reader.rb
mpxj-5.4.0	lib/mpxj/reader.rb
mpxj-5.3.3	lib/mpxj/reader.rb