Class: Xsv::SheetRowsHandler

Inherits:
SaxParser show all
Includes:
Helpers
Defined in:
lib/xsv/sheet_rows_handler.rb

Overview

This is the core worksheet parser, implemented as an Ox::Sax handler. This is used internally to enumerate rows.

Constant Summary

Constants included from Helpers

Helpers::A_CODEPOINT, Helpers::BUILT_IN_NUMBER_FORMATS, Helpers::EPOCH, Helpers::HOUR, Helpers::MINUTE

Constants inherited from SaxParser

Xsv::SaxParser::ATTR_REGEX

Instance Method Summary collapse

Methods included from Helpers

#column_index, #parse_date, #parse_datetime, #parse_number, #parse_number_format, #parse_time

Methods inherited from SaxParser

#parse

Constructor Details

#initialize(mode, empty_row, workbook, row_skip, last_row, &block) ⇒ SheetRowsHandler

Returns a new instance of SheetRowsHandler.



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# File 'lib/xsv/sheet_rows_handler.rb', line 9

def initialize(mode, empty_row, workbook, row_skip, last_row, &block)
  @mode = mode
  @empty_row = empty_row
  @workbook = workbook
  @row_skip = row_skip
  @last_row = last_row - @row_skip
  @block = block

  @store_characters = false

  @row_index = 0
  @col_index = 0
  @current_row = {}
  @current_row_number = 0
  @current_cell = {}
  @current_value = +""

  @headers = @empty_row.keys if @mode == :hash
end

Instance Method Details

#characters(value) ⇒ Object 



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# File 'lib/xsv/sheet_rows_handler.rb', line 42

def characters(value)
  @current_value << value if @store_characters
end

#end_element(name) ⇒ Object 



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# File 'lib/xsv/sheet_rows_handler.rb', line 46

def end_element(name)
  case name
  when "v", "is", "t"
    @store_characters = false
  when "c"
    col_index = @current_cell[:r] ? column_index(@current_cell[:r]) : @col_index

    if @mode == :array
      @current_row[col_index] = format_cell
    else
      @current_row[@headers[col_index]] = format_cell
    end

    @col_index += 1
  when "row"
    return if @current_row_number <= @row_skip

    adjusted_row_number = @current_row_number - @row_skip

    @row_index += 1
    @col_index = 0

    # Skip first row if we're in hash mode
    return if adjusted_row_number == 1 && @mode == :hash

    # Pad empty rows
    while @row_index < adjusted_row_number
      @block.call(@empty_row)
      @row_index += 1
      next
    end

    # Do not return empty trailing rows
    return if @row_index > @last_row

    # Add trailing empty columns
    if @mode == :array && @current_row.length < @empty_row.length
      @block.call(@current_row + @empty_row[@current_row.length..])
    else
      @block.call(@current_row)
    end
  end
end

#start_element(name, attrs) ⇒ Object 



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# File 'lib/xsv/sheet_rows_handler.rb', line 29

def start_element(name, attrs)
  case name
  when "c"
    @current_cell = attrs
    @current_value.clear
  when "v", "is", "t"
    @store_characters = true
  when "row"
    @current_row = @mode == :array ? [] : @empty_row.dup
    @current_row_number = attrs[:r].to_i
  end
end