added initial examples and Gemfile

Author: mattnedrich

Gemfile

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+source 'https://rubygems.org'
+
+gem 'rubyXL'
+gem 'roo'
+gem 'creek'

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    creek (1.1.2)
+      nokogiri (~> 1.6.0)
+      rubyzip (>= 1.0.0)
+    mini_portile2 (2.1.0)
+    nokogiri (1.6.8.1)
+      mini_portile2 (~> 2.1.0)
+    roo (2.7.1)
+      nokogiri (~> 1)
+      rubyzip (~> 1.1, < 2.0.0)
+    rubyXL (3.3.23)
+      nokogiri (>= 1.4.4)
+      rubyzip (>= 1.1.6)
+    rubyzip (1.2.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  creek
+  roo
+  rubyXL
+
+BUNDLED WITH
+   1.14.5

creek_example.rb

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+
+require 'creek'
+
+# ============================================
+# ===========   Read Example   ===============
+# ============================================
+
+workbook = Creek::Book.new "sample_excel_file.xlsx"
+
+worksheets = workbook.sheets
+puts "Found #{worksheets.count} worksheets"
+
+worksheets.each do |worksheet|
+  puts "Reading: #{worksheet}"
+  num_rows = 0
+
+  worksheet.rows.each do |row|
+    row_cells = row.values
+    num_rows += 1
+
+    # uncomment to print out row values
+    # puts row_cells.join " "
+  end
+  puts "Read #{num_rows} rows"
+end
+
+puts 'Done'

roo_example.rb

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+
+require 'roo'
+
+# ============================================
+# ===========   Read Example   ===============
+# ============================================
+
+workbook = Roo::Spreadsheet.open('./sample_excel_file.xlsx')
+
+worksheets = workbook.sheets
+puts "Found #{worksheets.count} worksheets"
+
+worksheets.each do |worksheet|
+  puts "Reading: #{worksheet}"
+  num_rows = 0
+
+  workbook.sheet(worksheet).each_row_streaming do |row|
+    row_cells = row.map { |cell| cell.value }
+    num_rows += 1
+
+    # uncomment to print out row values
+    # puts row_cells.join ' '
+  end
+  puts "Read #{num_rows} rows"
+end
+
+puts 'Done'

ruby_xl_example.rb

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+
+require 'rubyXL'
+
+# ============================================
+# ===========   Read Example   ===============
+# ============================================
+
+workbook = RubyXL::Parser.parse("sample_excel_file.xlsx")
+
+worksheets = workbook.worksheets
+puts "Found #{worksheets.count} worksheets"
+
+worksheets.each do |worksheet|
+  puts "Reading: #{worksheet.sheet_name}"
+  num_rows = 0
+
+  worksheet.each do |row|
+    row_cells = row.cells.map{ |cell| cell.value }
+    num_rows += 1
+
+    # uncomment to print out row values
+    # puts row_cells.join " "
+  end
+  puts "Read #{num_rows} rows"
+end
+
+puts 'Done'