Class: GenericSpreadsheet

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

Overview

Base class for all other types of spreadsheets

Direct Known Subclasses

Excel, Excel2003XML, Excelx, GoogleDoc, Openoffice

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ GenericSpreadsheet

Returns a new instance of GenericSpreadsheet.



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# File 'lib/roo/generic_spreadsheet.rb', line 12

def initialize
end

Instance Attribute Details

#default_sheet ⇒ Object

Returns the value of attribute default_sheet.



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# File 'lib/roo/generic_spreadsheet.rb', line 7

def default_sheet
  @default_sheet
end

#header_line ⇒ Object

sets the line with attribute names (default: 1)



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# File 'lib/roo/generic_spreadsheet.rb', line 10

def header_line
  @header_line
end

Instance Method Details

#column(columnnumber, sheet = nil) ⇒ Object

returns all values in this column as an array column numbers are 1,2,3,… like in the spreadsheet



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# File 'lib/roo/generic_spreadsheet.rb', line 277

def column(columnnumber,sheet=nil)
  if columnnumber.class == String
    columnnumber = Excel.letter_to_number(columnnumber)
  end
  sheet = @default_sheet unless sheet
  read_cells(sheet) unless @cells_read[sheet]
  result = []
  first_row(sheet).upto(last_row(sheet)) do |row|
    result << cell(row,columnnumber,sheet)
  end
  result
end

#empty?(row, col, sheet = nil) ⇒ Boolean

true if cell is empty

Returns:

  • (Boolean) 


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# File 'lib/roo/generic_spreadsheet.rb', line 301

def empty?(row, col, sheet=nil)
  sheet = @default_sheet unless sheet
  read_cells(sheet) unless @cells_read[sheet] or self.class == Excel
  row,col = normalize(row,col)
  return true unless cell(row, col, sheet)
  return true if celltype(row, col, sheet) == :string && cell(row, col, sheet).empty?
  return true if row < first_row(sheet) || row > last_row(sheet) || col < first_column(sheet) || col > last_column(sheet)
  false
end

#find(*args) ⇒ Object

find a row either by row number or a condition Caution: this works only within the default sheet -> set default_sheet before you call this method (experimental. see examples in the test_roo.rb file)



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# File 'lib/roo/generic_spreadsheet.rb', line 175

def find(*args) # :nodoc
  result_array = false
  args.each {|arg,val|
    if arg.class == Hash
      arg.each { |hkey,hval|
        if hkey == :array and hval == true
          result_array = true
        end
      }
    end
  }
  column_with = {}
  1.upto(last_column) do |col|
    column_with[cell(@header_line,col)] = col
  end
  result = Array.new
  #-- id
  if args[0].class == Fixnum
    rownum = args[0]
    if @header_line
      tmp = {}
    else
      tmp = []
    end
    1.upto(self.row(rownum).size) {|j|
      x = ''
      column_with.each { |key,val|
        if val == j
          x = key
        end
      }
      if @header_line
        tmp[x] = cell(rownum,j)
      else
        tmp[j-1] = cell(rownum,j)
      end

    }
    if @header_line
      result = [ tmp ]
    else
      result = tmp
    end
    #-- :all
  elsif args[0] == :all
    if args[1].class == Hash
      args[1].each {|key,val|
        if key == :conditions
          column_with = {}
          1.upto(last_column) do |col|
            column_with[cell(@header_line,col)] = col
          end
          conditions = val
          first_row.upto(last_row) do |i|
            # are all conditions met?
            found = 1
            conditions.each { |key,val|
              if cell(i,column_with[key]) == val
                found *= 1
              else
                found *= 0
              end
            }
            if found > 0
              tmp = {}
              1.upto(self.row(i).size) {|j|
                x = ''
                column_with.each { |key,val|
                  if val == j
                    x = key
                  end
                }
                tmp[x] = cell(i,j)
              }
              if result_array
                result << self.row(i)
              else
                result << tmp
              end
            end
          end
        end # :conditions
      }
    end
  end
  result
end

#first_column(sheet = nil) ⇒ Object

returns the number of the first non-empty column



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# File 'lib/roo/generic_spreadsheet.rb', line 93

def first_column(sheet=nil)
  if sheet == nil
    sheet = @default_sheet
  end
  read_cells(sheet) unless @cells_read[sheet]
  if @first_column[sheet]
    return @first_column[sheet]
  end
  impossible_value = 999_999 # more than a spreadsheet can hold
  result = impossible_value
  @cell[sheet].each_pair {|key,value|
    y,x = key # _to_string(key).split(',')
    x = x # .to_i
    result = [result, x].min if value
  } if @cell[sheet]
  result = nil if result == impossible_value
  @first_column[sheet] = result
  result
end

#first_column_as_letter(sheet = nil) ⇒ Object

first non-empty column as a letter



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# File 'lib/roo/generic_spreadsheet.rb', line 43

def first_column_as_letter(sheet=nil)
  GenericSpreadsheet.number_to_letter(first_column(sheet))
end

#first_row(sheet = nil) ⇒ Object

returns the number of the first non-empty row



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# File 'lib/roo/generic_spreadsheet.rb', line 53

def first_row(sheet=nil)
  if sheet == nil
    sheet = @default_sheet
  end
  read_cells(sheet) unless @cells_read[sheet]
  if @first_row[sheet]
    return @first_row[sheet]
  end
  impossible_value = 999_999 # more than a spreadsheet can hold
  result = impossible_value
  @cell[sheet].each_pair {|key,value|
    y,x = key # _to_string(key).split(',')
    y = y.to_i
    result = [result, y].min if value
  } if @cell[sheet]
  result = nil if result == impossible_value
  @first_row[sheet] = result
  result
end

#info ⇒ Object

Returns information of the spreadsheet document and all sheets within this document.



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# File 'lib/roo/generic_spreadsheet.rb', line 321

def info
  result = "File: #{File.basename(@filename)}\n"+
    "Number of sheets: #{sheets.size}\n"+
    "Sheets: #{sheets.map{|sheet| sheet+", "}.to_s[0..-3]}\n"
  n = 1
  sheets.each {|sheet|
    self.default_sheet = sheet
    result << "Sheet " + n.to_s + ":\n"
    unless first_row
      result << "  - empty -"
    else
      result << "  First row: #{first_row}\n"
      result << "  Last row: #{last_row}\n"
      result << "  First column: #{GenericSpreadsheet.number_to_letter(first_column)}\n"
      result << "  Last column: #{GenericSpreadsheet.number_to_letter(last_column)}"
    end
    result << "\n" if sheet != sheets.last
    n += 1
  }
  result
end

#initialise_tmp ⇒ Object 



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# File 'lib/roo/generic_spreadsheet.rb', line 15

def initialise_tmp
  @tmpdir = "oo_"+$$.to_s
  @tmpdir = File.join(ENV['ROO_TMP'], @tmpdir) if ENV['ROO_TMP'] 
  unless File.exists?(@tmpdir)
    FileUtils::mkdir(@tmpdir)
  end
end

#last_column(sheet = nil) ⇒ Object

returns the number of the last non-empty column



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# File 'lib/roo/generic_spreadsheet.rb', line 114

def last_column(sheet=nil)
  sheet = @default_sheet unless sheet
  read_cells(sheet) unless @cells_read[sheet]
  if @last_column[sheet]
    return @last_column[sheet]
  end
  impossible_value = 0
  result = impossible_value
  @cell[sheet].each_pair {|key,value|
    y,x = key # _to_string(key).split(',')
    x = x.to_i
    result = [result, x].max if value
  } if @cell[sheet]
  result = nil if result == impossible_value
  @last_column[sheet] = result
  result
end

#last_column_as_letter(sheet = nil) ⇒ Object

last non-empty column as a letter



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# File 'lib/roo/generic_spreadsheet.rb', line 48

def last_column_as_letter(sheet=nil)
  GenericSpreadsheet.number_to_letter(last_column(sheet))
end

#last_row(sheet = nil) ⇒ Object

returns the number of the last non-empty row



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# File 'lib/roo/generic_spreadsheet.rb', line 74

def last_row(sheet=nil)
  sheet = @default_sheet unless sheet
  read_cells(sheet) unless @cells_read[sheet]
  if @last_row[sheet]
    return @last_row[sheet]
  end
  impossible_value = 0
  result = impossible_value
  @cell[sheet].each_pair {|key,value|
    y,x = key # _to_string(key).split(',')
    y = y.to_i
    result = [result, y].max if value
  } if @cell[sheet]
  result = nil if result == impossible_value
  @last_row[sheet] = result
  result
end

#reload ⇒ Object

reopens and read a spreadsheet document



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# File 'lib/roo/generic_spreadsheet.rb', line 291

def reload
  ds = @default_sheet
  initialize(@filename) if self.class == Openoffice or
    self.class == Excel
  initialize(@spreadsheetkey,@user,@password) if self.class == Google
  self.default_sheet = ds
  #@first_row = @last_row = @first_column = @last_column = nil
end

#remove_tmp ⇒ Object

recursively removes the current temporary directory this is only needed if you work with zipped files or files via the web



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# File 'lib/roo/generic_spreadsheet.rb', line 313

def remove_tmp
  if File.exists?(@tmpdir)
    FileUtils::rm_r(@tmpdir) if @tmpdir
  end
end

#row(rownumber, sheet = nil) ⇒ Object

returns all values in this row as an array row numbers are 1,2,3,… like in the spreadsheet



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# File 'lib/roo/generic_spreadsheet.rb', line 265

def row(rownumber,sheet=nil)
  sheet = @default_sheet unless sheet
  read_cells(sheet) unless @cells_read[sheet]
  result = []
  first_column(sheet).upto(last_column(sheet)) do |col|
    result << cell(rownumber,col,sheet)
  end
  result
end

#to_csv(filename = nil, sheet = nil) ⇒ Object

write the current spreadsheet to stdout or into a file



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# File 'lib/roo/generic_spreadsheet.rb', line 160

def to_csv(filename=nil,sheet=nil)
  sheet = @default_sheet unless sheet
  if filename
    file = File.open(filename,"w") # do |file|
    write_csv_content(file,sheet)
    file.close
  else
    write_csv_content(STDOUT,sheet)
  end
  true
end

#to_xml ⇒ Object 



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# File 'lib/roo/generic_spreadsheet.rb', line 343

def to_xml
  xml_document = ''
  xml = Builder::XmlMarkup.new(:target => xml_document, :indent => 2)
  xml.instruct! :xml, :version =>"1.0", :encoding => "utf-8"
  xml.spreadsheet {
    self.sheets.each do |sheet|
      self.default_sheet = sheet
      xml.sheet(:name => sheet) { |x|
        if first_row and last_row and first_column and last_column
          # sonst gibt es Fehler bei leeren Blaettern
          first_row.upto(last_row) do |row|
            first_column.upto(last_column) do |col|
              unless empty?(row,col)
                x.cell(cell(row,col),
                  :row =>row,
                  :column => col,
                  :type => celltype(row,col))
              end
            end
          end
        end
      }
    end
  }
  xml_document
end

#to_yaml(prefix = {}, from_row = nil, from_column = nil, to_row = nil, to_column = nil, sheet = nil) ⇒ Object

returns a rectangular area (default: all cells) as yaml-output you can add additional attributes with the prefix parameter like: oo.to_yaml(“sheet” => “1”)



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# File 'lib/roo/generic_spreadsheet.rb', line 135

def to_yaml(prefix={}, from_row=nil, from_column=nil, to_row=nil, to_column=nil,sheet=nil)
  sheet = @default_sheet unless sheet
  result = "--- \n"
  (from_row||first_row(sheet)).upto(to_row||last_row(sheet)) do |row|
    (from_column||first_column(sheet)).upto(to_column||last_column(sheet)) do |col|
      unless empty?(row,col,sheet)
        result << "cell_#{row}_#{col}: \n"
        prefix.each {|k,v|
          result << "  #{k}: #{v} \n"
        }
        result << "  row: #{row} \n"
        result << "  col: #{col} \n"
        result << "  celltype: #{self.celltype(row,col,sheet)} \n"
        if self.celltype(row,col,sheet) == :time
          result << "  value: #{GenericSpreadsheet.integer_to_timestring( self.cell(row,col,sheet))} \n"
        else
          result << "  value: #{self.cell(row,col,sheet)} \n"
        end
      end
    end
  end
  result
end