Class: Knj::Table_writer

Inherits:
Object show all
Defined in:
lib/knj/table_writer.rb

Instance Method Summary collapse

Constructor Details

#initialize(args = {}) ⇒ Table_writer

Returns a new instance of Table_writer.



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# File 'lib/knj/table_writer.rb', line 5

def initialize(args = {})
  @args = args
  raise "No filepath was given." if @args["filepath"].to_s.empty?
  
  if @args["format"] == "csv"
    if @args["encoding"]
      encoding = @args["encoding"]
    else
      encoding = "utf-8"
    end
    
    @fp = File.open(@args["filepath"], "w", :encoding => encoding)
  elsif @args["format"] == "excel5"
    require "spreadsheet"
    
    @wb = Spreadsheet::Workbook.new
    @ws = @wb.create_worksheet
    @row = 0
  elsif @args["format"] == "excel2007"
    require "php_process" if !Kernel.const_defined?(:Php_process)
    
    @php = Php_process.new
    @php.func("require_once", "PHPExcel.php")
    
    if @args["date_format"]
      @date_format_excel = args["date_format"].gsub("d", "dd").gsub("m", "mm").gsub("y", "yy").gsub("Y", "yyyy").gsub("-", '\\-')
    end
    
    #Array used for identifiyng Excel-columns.
    @colarr = ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"]
    
    #This greatly speeds up the process, since it minimizes the call to PHP by ~25%.
    @date_cache = {}
    
    #Set cache-mode to cache-in-memory-gzip.
    cache_gzip_const = @php.constant_val("PHPExcel_CachedObjectStorageFactory::cache_to_discISAM")
    cosf = @php.static("PHPExcel_CachedObjectStorageFactory", "initialize", cache_gzip_const)
    @php.static("PHPExcel_Settings", "setCacheStorageMethod", cosf)
    
    #Create PHPExcel-objects.
    @pe = @php.new("PHPExcel")
    @pe.getProperties.setCreator(args["creator"]) if args["creator"]
    @pe.getProperties.setLastModifiedBy(args["last_modified_by"]) if args["last_modified_by"]
    @pe.getProperties.setTitle(args["title"]) if args["title"]
    @pe.getProperties.setSubject(args["subject"]) if args["subject"]
    @pe.getProperties.setDescription(args["descr"]) if args["descr"]
    @pe.setActiveSheetIndex(0)
    @sheet = @pe.getActiveSheet
    @linec = 1
  else
    raise "Unsupported format: '#{@args["format"]}'."
  end
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/knj/table_writer.rb', line 125

def close
  if @args["format"] == "csv"
    @fp.close
  elsif @args["format"] == "excel5"
    dirname = File.dirname(@args["filepath"])
    basename = File.basename(@args["filepath"], File.extname(@args["filepath"]))
    
    temp_path = "#{dirname}/#{basename}.xls"
    
    @wb.write(temp_path)
    @wb = nil
    @ws = nil
    
    FileUtils.mv(temp_path, @args["filepath"])
  elsif @args["format"] == "excel2007"
    writer = @php.new("PHPExcel_Writer_Excel2007", @pe)
    writer.save(@args["filepath"])
    self.destroy
  else
    raise "Unsupported format: '#{@args["format"]}'."
  end
  
  return nil
end

#destroy ⇒ Object 



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# File 'lib/knj/table_writer.rb', line 119

def destroy
  @sheet = nil
  @php.destroy if @php
  @php = nil
end

#ext ⇒ Object 



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# File 'lib/knj/table_writer.rb', line 150

def ext
  if @args["format"] == "csv"
    return "csv"
  elsif @args["format"] == "excel5"
    return "xls"
  elsif @args["format"] == "excel2007"
    return "xlsx"
  else
    raise "Unsupported format: '#{@args["format"]}'."
  end
end

#ftype ⇒ Object 



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# File 'lib/knj/table_writer.rb', line 162

def ftype
  if @args["format"] == "csv"
    return "text/csv"
  elsif @args["format"] == "excel5" or @args["format"] == "excel2007"
    return "application/ms-excel"
  else
    raise "Unsupported format: '#{@args["format"]}'."
  end
end

#write_row(arr) ⇒ Object 



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# File 'lib/knj/table_writer.rb', line 59

def write_row(arr)
  if @args["format"] == "csv"
    arr.each_index do |key|
      val = arr[key]
      
      if val.is_a?(Hash) and val["type"] == "decimal"
        arr[key] = Php4r.number_format(val["value"], @args["amount_decimals"], @args["amount_dsep"], @args["amount_tsep"])
      elsif val.is_a?(Hash) and val["type"] == "date"
        arr[key] = Php4r.date(@args["date_format"], val["value"])
      end
    end
    
    line_str = Knj::Csv.arr_to_csv(arr, @args["expl"], @args["surr"])
    
    @fp.write(line_str)
  elsif @args["format"] == "excel5"
    col_count = 0
    arr.each do |val|
      if val.is_a?(Hash) and val["type"] == "decimal"
        @ws[@row, col_count] = Php4r.number_format(val["value"], @args["amount_decimals"], @args["amount_dsep"], @args["amount_tsep"])
      elsif val.is_a?(Hash) and val["type"] == "date"
        @ws[@row, col_count] = Php4r.date(@args["date_format"], val["value"])
      else
        @ws[@row, col_count] = val
      end
      
      col_count += 1
    end
    
    @row += 1
  elsif @args["format"] == "excel2007"
    col_count = 0
    arr.each do |val|
      colval = "#{@colarr[col_count]}#{@linec}"
      
      if val.is_a?(Hash) and val["type"] == "decimal"
        @sheet.setCellValue(colval, val["value"])
        @sheet.getStyle(colval).getNumberFormat.setFormatCode("#,##0.00")
      elsif val.is_a?(Hash) and val["type"] == "date"
        datet = Datet.in(val["value"])
        datet.days + 1
        
        date_val = @php.static("PHPExcel_Shared_Date", "PHPToExcel", datet.to_i)
        @sheet.setCellValue(colval, date_val)
        @sheet.getStyle(colval).getNumberFormat.setFormatCode(@date_format_excel)
      else
        @sheet.setCellValue(colval, val)
      end
      
      col_count += 1
    end
    
    @linec += 1
  else
    raise "Unsupported format: '#{@args["format"]}'."
  end
  
  return nil
end