package gboat2.base.logging.service.impl;
   
   
   
   import gboat2.base.logging.Constants;
   import gboat2.base.logging.service.ISystemLogService;
   
   import java.io.File;
   import java.io.FileReader;
  import java.io.LineNumberReader;
  
  import org.springframework.stereotype.Service;
  import org.springframework.transaction.annotation.Transactional;
  
  /**
   * 系统日志管理
   * @author zhaop
   * @since jdk1.6
   * @date 2012-05-09
   */
  @Transactional
  @Service
  public class SystemLogServiceImpl implements ISystemLogService {
  
  	@Override
  	public int getTotalLineNumber(File file) {
  		int lines = 0;
  		try {
  			FileReader in = new FileReader(file);
  			LineNumberReader reader = new LineNumberReader(in);
  			String s = reader.readLine();
  			while (s != null) {
  				lines++;
  				s = reader.readLine();
  			}
  			reader.close();
  			in.close();
  		} catch (Exception e) {
  			e.printStackTrace();
  		}
  		return lines;
  	}
  
  	@Override
  	public int getTotalPage(int lines) {
  		if (lines <= Constants.PAGESIZE) {
  			return 1;
  		} else {
  			if (lines % Constants.PAGESIZE == 0) {
  				return lines / Constants.PAGESIZE;
  			} else {
  				return lines / Constants.PAGESIZE + 1;
  			}
  		}
  	}
  
  }