Class: Google

Inherits:
GenericSpreadsheet show all
Defined in:
lib/roo/google.rb

Overview

module

Instance Attribute Summary collapse

Attributes inherited from GenericSpreadsheet

#default_sheet, #header_line

Instance Method Summary collapse

Methods inherited from GenericSpreadsheet

#column, #find, #first_column_as_letter, #info, #last_column_as_letter, #reload, #remove_tmp, #row, #to_csv, #to_xml, #to_yaml

Constructor Details

#initialize(spreadsheetkey, user = nil, password = nil) ⇒ Google

Creates a new Google spreadsheet object.



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# File 'lib/roo/google.rb', line 82

def initialize(spreadsheetkey,user=nil,password=nil)
  @filename = spreadsheetkey
  @spreadsheetkey = spreadsheetkey
  @user = user
  @password = password
  unless user
    user = ENV['GOOGLE_MAIL']
  end
  unless password
    password = ENV['GOOGLE_PASSWORD']
  end
  @default_sheet = nil
  @cell = Hash.new {|h,k| h[k]=Hash.new}
  @cell_type = Hash.new {|h,k| h[k]=Hash.new}
  @formula = Hash.new
  @first_row = Hash.new
  @last_row = Hash.new
  @first_column = Hash.new
  @last_column = Hash.new
  @cells_read = Hash.new
  @header_line = 1
  @date_format = '%d/%m/%Y'
  @datetime_format = '%d/%m/%Y %H:%M:%S' 
  @time_format = '%H:%M:%S'
  @gs = GData::Spreadsheet.new(spreadsheetkey)
  @gs.authenticate(user, password)
  @sheetlist = @gs.sheetlist
  #-- ----------------------------------------------------------------------
  #-- TODO: Behandlung von Berechtigungen hier noch einbauen ???
  #-- ----------------------------------------------------------------------
  @default_sheet = self.sheets.first
end

Instance Attribute Details

#date_format ⇒ Object

Returns the value of attribute date_format.



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# File 'lib/roo/google.rb', line 79

def date_format
  @date_format
end

#datetime_format ⇒ Object

Returns the value of attribute datetime_format.



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# File 'lib/roo/google.rb', line 79

def datetime_format
  @datetime_format
end

Instance Method Details

#cell(row, col, sheet = nil) ⇒ Object

Returns the content of a spreadsheet-cell. (1,1) is the upper left corner. (1,1), (1,‘A’), (‘A’,1), (‘a’,1) all refers to the cell at the first line and first row.



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# File 'lib/roo/google.rb', line 161

def cell(row, col, sheet=nil)
  sheet = @default_sheet unless sheet
  check_default_sheet #TODO: 2007-12-16
  read_cells(sheet) unless @cells_read[sheet]
  row,col = normalize(row,col)
  value = @cell[sheet]["#{row},#{col}"]
  if celltype(row,col,sheet) == :date
    begin
      return  Date.strptime(value, @date_format)
    rescue ArgumentError
      raise "Invalid Date #{sheet}[#{row},#{col}] #{value} using format '{@date_format}'"
    end
  elsif celltype(row,col,sheet) == :datetime
    begin
      return  DateTime.strptime(value, @datetime_format)
    rescue ArgumentError
      raise "Invalid DateTime #{sheet}[#{row},#{col}] #{value} using format '{@datetime_format}'"
    end
  end 
  return value
end

#celltype(row, col, sheet = nil) ⇒ Object

returns the type of a cell:

  • :float

  • :string

  • :date

  • :percentage

  • :formula

  • :time

  • :datetime



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# File 'lib/roo/google.rb', line 191

def celltype(row, col, sheet=nil)
  sheet = @default_sheet unless sheet
  read_cells(sheet) unless @cells_read[sheet]
  row,col = normalize(row,col)
  if @formula[sheet]["#{row},#{col}"]
    return :formula
  else
    @cell_type[sheet]["#{row},#{col}"]
  end
end

#date?(string) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/roo/google.rb', line 120

def date?(string)
  begin
    Date.strptime(string, @date_format)
    true
  rescue
    false
  end
end

#datetime?(string) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/roo/google.rb', line 139

def datetime?(string)
  begin
    DateTime.strptime(string, @datetime_format)
    true
  rescue
    false
  end
end

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

true, if the cell is empty

Returns:

  • (Boolean) 


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# File 'lib/roo/google.rb', line 242

def empty?(row, col, sheet=nil)
  value = cell(row, col, sheet)
  return true unless value
  return false if value.class == Date # a date is never empty
  return false if value.class == Float
  return false if celltype(row,col,sheet) == :time
  value.empty?
end

#first_column(sheet = nil) ⇒ Object

returns the first non-empty column in a sheet



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# File 'lib/roo/google.rb', line 294

def first_column(sheet=nil)
  sheet = @default_sheet unless sheet
  unless @first_column[sheet]
    sheet_no = sheets.index(sheet) + 1
    @first_row[sheet], @last_row[sheet], @first_column[sheet], @last_column[sheet] = @gs.oben_unten_links_rechts(sheet_no)
  end
  return @first_column[sheet]
end

#first_row(sheet = nil) ⇒ Object

returns the first non-empty row in a sheet



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# File 'lib/roo/google.rb', line 274

def first_row(sheet=nil)
  sheet = @default_sheet unless sheet
  unless @first_row[sheet]
    sheet_no = sheets.index(sheet) + 1
    @first_row[sheet], @last_row[sheet], @first_column[sheet], @last_column[sheet] = @gs.oben_unten_links_rechts(sheet_no)
  end   
  return @first_row[sheet]
end

#formula(row, col, sheet = nil) ⇒ Object

Returns the formula at (row,col). Returns nil if there is no formula. The method #formula? checks if there is a formula.



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# File 'lib/roo/google.rb', line 205

def formula(row,col,sheet=nil)
  sheet = @default_sheet unless sheet
  read_cells(sheet) unless @cells_read[sheet]
  row,col = normalize(row,col)
  if @formula[sheet]["#{row},#{col}"] == nil
    return nil
  else
    return @formula[sheet]["#{row},#{col}"] 
  end
end

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

true, if there is a formula

Returns:

  • (Boolean) 


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# File 'lib/roo/google.rb', line 217

def formula?(row,col,sheet=nil)
  sheet = @default_sheet unless sheet
  read_cells(sheet) unless @cells_read[sheet]
  row,col = normalize(row,col)
  formula(row,col) != nil
end

#formulas(sheet = nil) ⇒ Object

returns each formula in the selected sheet as an array of elements

row, col, formula 


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# File 'lib/roo/google.rb', line 226

def formulas(sheet=nil)
  theformulas = Array.new
  sheet = @default_sheet unless sheet
  read_cells(sheet) unless @cells_read[sheet]
  first_row(sheet).upto(last_row(sheet)) {|row|
    first_column(sheet).upto(last_column(sheet)) {|col|
      if formula?(row,col,sheet)
        f = [row, col, formula(row,col,sheet)]
        theformulas << f
      end
    }
  }
  theformulas
end

#last_column(sheet = nil) ⇒ Object

returns the last non-empty column in a sheet



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# File 'lib/roo/google.rb', line 304

def last_column(sheet=nil)
  sheet = @default_sheet unless sheet
  unless @last_column[sheet]
    sheet_no = sheets.index(sheet) + 1
    @first_row[sheet], @last_row[sheet], @first_column[sheet], @last_column[sheet] = @gs.oben_unten_links_rechts(sheet_no)
  end
  return @last_column[sheet]
end

#last_row(sheet = nil) ⇒ Object

returns the last non-empty row in a sheet



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# File 'lib/roo/google.rb', line 284

def last_row(sheet=nil)
  sheet = @default_sheet unless sheet
  unless @last_row[sheet]
    sheet_no = sheets.index(sheet) + 1
    @first_row[sheet], @last_row[sheet], @first_column[sheet], @last_column[sheet] = @gs.oben_unten_links_rechts(sheet_no)
  end
  return @last_row[sheet]
end

#numeric?(string) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/roo/google.rb', line 148

def numeric?(string)
  string =~ /^[0-9]+[\.]*[0-9]*$/
end

#set_value(row, col, value, sheet = nil) ⇒ Object

sets the cell to the content of ‘value’ a formula can be set in the form of ‘=SUM(…)’

Raises:

  • (RangeError) 


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# File 'lib/roo/google.rb', line 253

def set_value(row,col,value,sheet=nil)
  sheet = @default_sheet unless sheet
  raise RangeError, "sheet not set" unless sheet
  #@@ Set and pass sheet_no
  begin
    sheet_no = sheets.index(sheet)+1
  rescue
    raise RangeError, "invalid sheet '"+sheet.to_s+"'"
  end
  row,col = normalize(row,col)
  @gs.add_to_cell_roo(row,col,value,sheet_no)
  # re-read the portion of the document that has changed
  if @cells_read[sheet]
    key = "#{row},#{col}"
    (value, value_type) = determine_datatype(value.to_s)
    @cell[sheet][key] = value 
    @cell_type[sheet][key] = value_type 
  end
end

#sheets ⇒ Object

returns an array of sheet names in the spreadsheet



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# File 'lib/roo/google.rb', line 116

def sheets
  @sheetlist
end

#time?(string) ⇒ Boolean

is String a time with format HH:MM:SS?

Returns:

  • (Boolean) 


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# File 'lib/roo/google.rb', line 130

def time?(string)
  begin
    DateTime.strptime(string, @time_format)
    true
  rescue
    false
  end
end

#timestring_to_seconds(value) ⇒ Object 



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# File 'lib/roo/google.rb', line 152

def timestring_to_seconds(value)
  hms = value.split(':')
  hms[0].to_i*3600 + hms[1].to_i*60 + hms[2].to_i
end