FEATURE: Zoho importer

script/import_scripts/base/csv_helper.rb

@@ -0,0 +1,75 @@
+module ImportScripts
+  module CsvHelper
+    class RowResolver
+      def load(row)
+        @row = row
+      end
+
+      def self.create(cols)
+        Class.new(RowResolver).new(cols)
+      end
+
+      def initialize(cols)
+        cols.each_with_index do |col,idx|
+          self.class.send(:define_method, col.downcase.gsub(/[\W]/, '_').squeeze('_')) do
+            @row[idx]
+          end
+        end
+      end
+    end
+
+    def csv_parse(filename, col_sep = ',')
+      first = true
+      row = nil
+
+      current_row = ""
+      double_quote_count = 0
+
+      File.open(filename).each_line do |line|
+
+        line.strip!
+
+        current_row << "\n" unless current_row.empty?
+        current_row << line
+
+        double_quote_count += line.scan('"').count
+
+        next if double_quote_count % 2 == 1 # this row continues on a new line. don't parse until we have the whole row.
+
+        raw = begin
+                CSV.parse(current_row, col_sep: col_sep)
+              rescue CSV::MalformedCSVError => e
+                puts e.message
+                puts "*" * 100
+                puts "Bad row skipped, line is: #{line}"
+                puts
+                puts current_row
+                puts
+                puts "double quote count is : #{double_quote_count}"
+                puts "*" * 100
+
+                current_row = ""
+                double_quote_count = 0
+
+                next
+              end[0]
+
+        if first
+          row = RowResolver.create(raw)
+
+          current_row = ""
+          double_quote_count = 0
+          first = false
+          next
+        end
+
+        row.load(raw)
+
+        yield row
+
+        current_row = ""
+        double_quote_count = 0
+      end
+    end
+  end
+end