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README.md

libcu

介绍

用各种语言实现的基本库 library for common use

Nodejs部分

libcu

libcu aim to provide a common use lib for JavaScript

libcu致力于提供一个JS的通用方法库


example

const libcu = require('libcu');
console.log(libcu.tools.sleep(100));

APIS & Usage

const libcu = require('libcu')

I.tools

  • 1.findLackNumArr(arr)

    Find the missing number in a contiguous array

    在连续的数组里面找到缺少的数字

    let a = [1,2,4,6,10];
    a = libcu.tools.findLackNumArr(a);
    console.log(a);
    '[ 3, 5, 7, 8, 9 ]'
  • 2.sleep(ms)

    async sleep

    异步睡眠函数

    await libcu.tools.sleep(1000);
  • 3.contains(arr, obj)

    Judge whether obj is in arr

    判断obj是否在arr里面

    ([1,2,3] , 1) will return true

    let a = [1,2,4,6,10];
    let b = 3;
    console.log(libcu.tools.contains(a,b));
    'false'
  • 4.ascii2Hex(buf)

    omited

  • 5.hex2Ascii(buf)

    omited

  • 6.padZero(num, len)

    Left padding zero, len is the number of zeros

    左补零,len为补0的个数

    let a = 1;
    let b = libcu.tools.padZero(a,3);
    console.log(b);
    '001'
  • 7.padZero(num, len)

    Hexadecimal left padding zero

    十六进制左补零

    let a = 1;
    let b = libcu.tools.padZero16(a,3);
    console.log(b);
    '001'
  • 8.buf2String(buf)

    let a =  Buffer.alloc(10)
    a.fill('wtx',0,10);
    console.log(libcu.tools.buf2String(a));
    'wtxwtxwtxw'
  • 9.readUInt24BE(inBuf, begin, end)

    In part, it is similar to readUInt32BE

    部分和readUInt32BE类似

    let a =  Buffer.alloc(10)
    a.fill('wtx',0,10);
    let b = libcu.tools.readUInt24BE(a);
    console.log(libcu.tools.buf2String(b));
    '7828600'
  • 10.str2arr(str,flag)

    !flag : '[1,2,3]' to [1,2,3]

    flag : '["1","2","3"]' to [1,2,3]

    let a = '[1,2,3]';
    let b = libcu.tools.str2arr(a);
    console.log(b);
    `[ '1', '2', '3' ]`
  • 11.acc2Decimal(value)

    1.1 to 1.10

    1 to 1.00

    1.10 to 1.10

    let a = 1.2;
    console.log(libcu.tools.acc2Decimal(a));
    '1.20'
  • 12.isNumber(value)

    let a = '1.4f'
    console.log(libcu.tools.isNumber(a));
    'false'
  • 13.safeJsonStringfy(json)

    let a = "1"
    console.log(libcu.tools.safeJsonStringfy(a));
    '1'
  • 14.safeJsonParse(json)

    let a = "1"
    console.log(libcu.tools.safeJsonParse(a));
    '1'
  • 15.delQuotation(number)

    let a = `"1"`
    console.log(libcu.tools.delQuptation(a));
    '1'

II.cf

The main API is the following

  • 1.async walkFolder(dirname, option)

    Get all the files and folders in the directory

    获取目录下的所有文件和文件夹

    return {
        fileList : [],
        dirList : []
    }
  • 2.async copyFolder(srcDir, tarDir, filter)

    Copy entire directory

    复制整个目录

III.mysql

  • 1.init(connect)

    Tell MySQL connection information

    告诉mysql连接信息

        connect : {
            "host" : "127.0.0.1",
            "user" : "test",
            "password":"123456",
            "database" : "mydb",
        }
  • 2.async beginTrans()

    Start a transaction

    开启一段事务

    usage:

    try {
        let conn = await beginTrans();
    }catch(error) {
    
    }
  • 3.async dbop(sql, sqlParam)

    try {
    let res = await dbop('select * from test');
    } catch(error) {
        
    }
    
  • 4.async dbOpInTrans(sql, sqlParam, connection)

  • 5.async commit(conn)

  • 6.async rollback(conn)

    
    try {
        let conn = await beginTrans();
        try {
            await dbOpInTrans(sql,sqlParam,conn);
            await commit(conn);
        }catch (error) {
            await rollback(conn);
        }
    }catch(error) {
    
    }
    

IV.cipher

  • 1.getMd5Buffer(data)

    let a = 1.2
    console.log(libcu.cipher.getMd5Buffer(a));
    '<Buffer 56 76 54 72 68 04 01 49 9c 79 73 24 68 ba 43 40>'
  • 2.getMd5Str(data)

    let a = 1.2
    console.log(libcu.cipher.getMd5Str(a));
    '56765472680401499c79732468ba4340'
  • 3.getMd5UpperStr(data)

    let a = 1.2
    console.log(libcu.cipher.getMd5UpperStr(a));
    '56765472680401499C79732468BA4340'
  • 4.setAesKey(key)

    defalut is "/GwhjXbE1SCPaIY=" (AvenirLibcu)

  • 5.AesEncode(info)

  • 6.AesDecode(info)

    let a = 1.2
    let b  = libcu.cipher.AesEncode(a);
    console.log(b);
    let c = libcu.cipher.AesDecode(b);
    console.log(c);
    'b = rXtFTnkfN1IXmvO94PoeQA=='
    'c = 1.2'

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各语言常用方法基本库 library for common use 展开 收起
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