调整

db/migrate/20191021150220_migrate_exercise_answer_score.rb

@@ -1,4 +1,41 @@
 class MigrateExerciseAnswerScore < ActiveRecord::Migration[5.2]
+  def challenge_path(path)
+    cha_path = path.present? ? path.split("；") : []
+    cha_path.reject(&:blank?)[0].try(:strip)
+  end
+
+  # 版本库文件内容，带转码
+  def git_fle_content(repo_path, path)
+    begin
+      Rails.logger.info("git file content: repo_path is #{repo_path}, path is #{path}")
+
+      content = GitService.file_content(repo_path: repo_path, path: path)
+
+      Rails.logger.info("git file content: content is #{content}")
+      decode_content = nil
+      if content.present?
+        content = content["content"]   #6.24 -hs 这个为新增，因为当实训题里含有选择题时，这里会报错,undefined method `[]' for nil:NilClass
+
+        content = Base64.decode64(content)
+        cd = CharDet.detect(content)
+        Rails.logger.info "encoding: #{cd['encoding']} confidence: #{cd['confidence']}"
+        # 字符编码问题，GB18030编码识别率不行
+        decode_content =
+          if cd["encoding"] == 'GB18030' && cd['confidence'] > 0.8
+            content.encode('UTF-8', 'GBK', {:invalid => :replace, :undef => :replace, :replace => ' '})
+          else
+            content.force_encoding('UTF-8')
+          end
+      end
+
+      decode_content
+
+    rescue Exception => e
+      Rails.logger.error(e.message)
+      raise Educoder::TipException.new("文档内容获取异常")
+    end
+  end
+
   def calculate_student_score(exercise,user)
     score5 = 0.0  #实训题
     exercise_questions = exercise.exercise_questions.includes(:exercise_standard_answers,:exercise_shixun_challenges)