io.jpom.util

Class FileSearchUtil

java.lang.Object

io.jpom.util.FileSearchUtil

public class FileSearchUtil
extends Object

文件搜索工具

Since:

2022/5/15

Author:

bwcx_jzy

Constructor Summary

Constructors

Constructor and Description
FileSearchUtil()

Method Summary

Modifier and Type	Method and Description
static int[]	calculate(int head, int tailLine, boolean first) 计算读取文件行数相关
static Collection<cn.hutool.core.lang.Tuple>	readLastLine(File file, Charset charset, int line)
static Collection<cn.hutool.core.lang.Tuple>	readRangeLine(File file, Charset charset, int[] range)
static String	searchList(File file, Charset charset, String searchKey, int cacheBeforeCount, int afterCount, int head, int tailCount, boolean first, Consumer<cn.hutool.core.lang.Tuple> consumer)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FileSearchUtil

public FileSearchUtil()

Method Detail

searchList

public static String searchList(File file,
                                Charset charset,
                                String searchKey,
                                int cacheBeforeCount,
                                int afterCount,
                                int head,
                                int tailCount,
                                boolean first,
                                Consumer<cn.hutool.core.lang.Tuple> consumer)
                         throws IOException

Parameters:

file - 文件

charset - 编码格式

searchKey - 搜索关键词

cacheBeforeCount - 关键词前多少行

afterCount - 关键词后多少行

head - 搜索文件头多少行

tailCount - 文件后多少行

first - 是否从头开始读取

consumer - 回调

Returns:

结果描述

Throws:

IOException - io

readLastLine

public static Collection<cn.hutool.core.lang.Tuple> readLastLine(File file,
                                                                 Charset charset,
                                                                 int line)
                                                          throws IOException

Throws:

IOException

readRangeLine

public static Collection<cn.hutool.core.lang.Tuple> readRangeLine(File file,
                                                                  Charset charset,
                                                                  int[] range)
                                                           throws IOException

Throws:

IOException

calculate

public static int[] calculate(int head,
                              int tailLine,
                              boolean first)

计算读取文件行数相关

Parameters:

head - 从文件头开始读取

tailLine - 读最后几乎

first - 是否从头开始读取

Returns:

int