Make row-specific options approach work

lib/csvlint/validate.rb

@@ -184,27 +184,9 @@ def parse_contents(stream, line = nil)
 
       @csv_options[:encoding] = @encoding
 
-      # From CSV.parse_line(stream, **@csv_options), called via inheritance by
-      #   LineCSV.parse_line(stream, **lineopts)
-      #
-      # line = "Short,Multi,Bool\r\n"
-      # options = {:col_sep=>",", :row_sep=>:auto, :quote_char=>"\"",
-      #   :skip_blanks=>false, :encoding=>"UTF-8"}
-      # new(line, **options) = #<Csvlint::Validator::LineCSV io_type:StringIO
-      #   encoding:UTF-8 lineno:0 col_sep:"," row_sep:"\r\n" quote_char:"\"">
-      #
-      # line = "a,\"b\nc\",0\r\n"
-      # options = {:col_sep=>",", :row_sep=>:auto, :quote_char=>"\"",
-      #   :skip_blanks=>false, :encoding=>"UTF-8"}
-      # new(line, **options) = #<Csvlint::Validator::LineCSV io_type:StringIO
-      #   encoding:UTF-8 lineno:0 col_sep:"," row_sep:"\n" quote_char:"\"">
-      #
-      # So, what is setting row_sep incorrectly to "\n" when that character
-      #   appears in quotes, but not at the end of the line?
       begin
-        # lineopts = csv_options_for_line(stream)
-        # row = LineCSV.parse_line(stream, **lineopts)
-        row = LineCSV.parse_line(stream, **@csv_options)
+        lineopts = csv_options_for_line(stream)
+        row = LineCSV.parse_line(stream, **lineopts)
       rescue LineCSV::MalformedCSVError => e
         build_exception_messages(e, stream, current_line) unless e.message.include?("UTF") && @reported_invalid_encoding
       end
@@ -234,19 +216,18 @@ def parse_contents(stream, line = nil)
       @data << row
     end
 
-    # def csv_options_for_line(line)
-    #   # If a specific row_sep has been explicitly specified, don't mess with it
-    #   return @csv_options unless @csv_options[:row_sep] == :auto
+    def csv_options_for_line(line)
+      # If a specific row_sep has been explicitly specified, don't mess with it
+      return @csv_options unless @csv_options[:row_sep] == :auto
 
-    #   # CSV.parse_line does not seem to know how to auto-determine row_sep
-    #   #   from the single line it is given, and throws a MalformedCSVError if
-    #   #   \r\n or \r is present at the end of the line.
-    #   if line.end_with?("\r\n")
-    #     @csv_options.merge({row_sep: "\r\n"})
-    #   else
-    #     @csv_options.merge({row_sep: line[-1, 1]})
-    #   end
-    # end
+      if line.end_with?("\r\n")
+        @csv_options.merge({row_sep: "\r\n"})
+      elsif ["\r", "\n"].include?(line[-1, 1])
+        @csv_options.merge({row_sep: line[-1, 1]})
+      else
+        @csv_options
+      end
+    end
 
     def finish
       sum = @col_counts.inject(:+)