medical/js/dllinvoke.js

DLL medical

const ffi  = require('ffi-napi')
const path = require('path')
const fs = require('fs');
const hisLogger = require("../../../src/hisLogger");
const { K, U } = require('win32-api')
const   ref = require('ref-napi')
const iconv = require('iconv-lite')

const knl32 = K.load()
const userApi32 = U.load()  // 初始化 lib/{dll}/api 文件中定义的所有函数


/**
 *  https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-lcid/a9eac961-e77d-41a6-90a5-ce1a8b0cdb9c?redirectedfrom=MSDN
 * @param en_zh 字符串 en 英文状态 zh中文状态
 * @returns {Promise<void>}
 */
async function setImm32(en_zh){

    // const imm32 = ffi.Library("imm32.dll", {
    //     ImmSimulateHotKey: ["bool", ["long",'long']],
    //     ImmGetContext: ["long", ["long"]],
    //     ImmGetDefaultIMEWnd: ["long", ["long"]],
    //     ImmGetOpenStatus: ["bool", ['long']],
    //     ImmGetConversionStatus:["bool", ["long","int","int"]],
    //     ImmSetConversionStatus:["bool", ["long","int","int"]]
    // });
    // const user32 = ffi.Library("user32.dll", {
    //     'GetKeyboardLayout': ["long", ["long"]],
    //     'GetActiveWindow': ["long", ["long"]],
    //     'LoadKeyboardLayout': ["long", ["long"]],
    //     'ActivateKeyboardLayout': ["long", ["long"]]
    // });
    // const imeToggle=112;
    // let current = user32.GetKeyboardLayout(0);
    // hisLogger.hisLogger({LoadKeyboardLayout:current})
    // if (en_zh=="en"){
    //     current = user32.GetKeyboardLayout(0);
    // }else {
    //     current  = user32.LoadKeyboardLayout("0x0409", KLF_ACTIVATE)
    //     hisLogger.hisLogger({LoadKeyboardLayout:current})
    // }
    // user32.keybd_event(0x11,0,0,0);
    user32.keybd_event(0x10,0,0,0);
    user32.keybd_event(0x10,0,2,0);
    // user32.keybd_event(0x11,0,2,0);
    console.log("设置中英文切换成功！")

    // let curr_window = userApi32.GetForegroundWindow()
    // let thread_id = userApi32.GetWindowThreadProcessId(curr_window, null)
    // let klid = user32.GetKeyboardLayout(thread_id)
    // console.log(klid.toString(16))
    // //8040804
    // let  lid_hex = "0x"+klid.toString(16)
    //
    // console.log(lid_hex)
    // if(lid_hex.indexOf("0x409")>0){
    //     console.log('当前的输入法状态是英文输入模式\n\n')
    // } else if (lid_hex.indexOf('0x804')>0){
    //     console.log('当前的输入法是中文输入模式\n\n')
    // } else {
    //     console.log('当前的输入法既不是英文输入也不是中文输入\n\n')
    // }
    //
    // let  prt = imm32.ImmGetDefaultIMEWnd(curr_window);
    // let curIMode = 0;
    // let curISentence = 0;
    // if(!imm32.ImmGetConversionStatus(prt,curIMode,curISentence)){
    //     console.log('当前的输入法既不是英文输入也不是中文输入\n\n',curIMode,curISentence)
    // }
    // let conversion=1025;
    // let sentence=0;
    // if (!imm32.ImmSetConversionStatus(prt, conversion, sentence))
    // {
    //     console.log('change error')
    //     console.log('当前的输入法: ',conversion, sentence)
    // }
    // console.log('当前的输入法: ',conversion, sentence)
}

const voidPtr = ref.refType(ref.types.void);
const stringPtr = ref.refType(ref.types.CString);
const user32 = ffi.Library('user32.dll', {
    GetSystemMenu: ['int', ['int', 'bool']],
    EnumWindows: ['bool', [voidPtr, 'int32']],
    GetWindowTextA: ['long', ['long', stringPtr, 'long']],
    SetForegroundWindow: ['bool', ['long']],
    MapVirtualKeyA: ['long', ['long', 'long']],
    PostMessageW: ['bool', ['long', 'long', 'long', ref.types.ulong]],
    SendMessageA: ['bool', ['long', 'long', 'long', ref.types.ulong]],
    keybd_event:['bool', ['int', 'int', 'int', 'int']],
    GetKeyboardLayout: ["long", ["long"]]
});

//设置Path环境环境
async function setDllDirectory(dllDirectory){
    const kernel32 = ffi.Library("kernel32", {
        'SetDllDirectoryA': ["bool", ["string"]]
    });
    kernel32.SetDllDirectoryA(dllDirectory)
}


async function invoke(dllDirectory,fileName,functionSymbol) {
    try {
        await setDllDirectory(dllDirectory);
        let fullPath = path.join(dllDirectory,fileName)

        hisLogger.hisLogger("信息：",fullPath,fileName,functionSymbol)
        let inits = ffi.Library(fullPath, functionSymbol);
        return inits;
    } catch(error) {
        hisLogger.hisLogger(error.toString())
    }
}



/**
 * 读取路径信息
 * @param {string} path 路径
 */
function getStat(path){
    return new Promise((resolve, reject) => {
        fs.stat(path, (err, stats) => {
            if(err){
                resolve(false);
            }else{
                resolve(stats);
            }
        })
    })
}

/**
 * 创建路径
 * @param {string} dir 路径
 */
function mkdir(dir){
    return new Promise((resolve, reject) => {
        fs.mkdir(dir, err => {
            if(err){
                resolve(false);
            }else{
                resolve(true);
            }
        })
    })
}

/**
 * 路径是否存在，不存在则创建
 * @param {string} dir 路径
 */
async function dirExists(dir){
    let isExists = await getStat(dir);
    //如果该路径且不是文件，返回true
    if(isExists && isExists.isDirectory()){
        return true;
    }else if(isExists){     //如果该路径存在但是文件，返回false
        return false;
    }
    //如果该路径不存在
    let tempDir = path.parse(dir).dir;      //拿到上级路径
    //递归判断，如果上级目录也不存在，则会代码会在此处继续循环执行，直到目录存在
    let status = await dirExists(tempDir);
    let mkdirStatus;
    if(status){
        mkdirStatus = await mkdir(dir);
    }
    return mkdirStatus;
}

module.exports={invoke,dirExists,setImm32}