PB调用JavaScript的简单应用

Windows系统里提供了一个名为ScriptControl的OCX组件，可以用来执行JavaScript和VBScript等脚本语言。针对PB语言缺乏的各种基础算法功能，使用JavaScript相应的库来实现是一种比较好的方式。
下图为ScriptControl组件提供的方法：

URL编码与解码

n_script_control sc
string ls_text
string ls_encode_result, ls_decode_result

ls_text = "PB调用JavaScript的简单应用"

sc = create n_script_control

// URL编码
ls_encode_result = sc.eval('encodeURI("'+ls_text+'")')

// URL解码
ls_decode_result = sc.eval('decodeURI("'+ls_encode_result+'")')

return 0

解析XML

测试XML：

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <callprcsrvResponse xmlns="http://tempurl.org">
      <callprcsrvResult>PB调用JavaScript的简单应用</callprcsrvResult>
    </callprcsrvResponse>
  </soap:Body>
</soap:Envelope>

JavaScript代码：

function testParseXML(xmlString){
    var xmlDoc = null;
    xmlDoc = new ActiveXObject("MSXML2.DOMDocument");
    xmlDoc.async = false;
    xmlDoc.loadXML(xmlString);
    return xmlDoc.getElementsByTagName("callprcsrvResult")[0].firstChild.nodeValue;
}

crypto-js库加解密算法

MD5

JavaScript代码：

function testMD5(signStr){
	return CryptoJS.MD5(signStr).toString();
}

调用testMD5前，ScriptControl需要先加载依赖项core.js和md5.js

HmacSHA256

JavaScript代码：

function testHmacSHA256(msg, key){
	return CryptoJS.HmacSHA256(msg, key).toString();
}

调用testHmacSHA256前，ScriptControl需要先加载依赖项core.js、sha256.js、hmac.js、hmac-sha256.js

源代码

这里仅对ScriptControl组件做简单的封装
发现BUG请留言或私信，以便修正（QQ：768310524 TEL：[phone]）

forward
global type n_script_control from nonvisualobject
end type
end forward

global type n_script_control from nonvisualobject
end type
global n_script_control n_script_control

type variables
private:
	oleobject o
end variables

forward prototypes
public subroutine setlanguage (string language)
public subroutine addcode (string script)
public subroutine reset ()
public function string getlanguage ()
public subroutine settimeout (long milliseconds)
public function long gettimeout ()
public function any eval (string script)
public function any run (string procedurename, any param1)
public function any run (string procedurename)
public function any run (string procedurename, any param1, any param2)
public function any run (string procedurename, any param1, any param2, any param3)
public function any apply (string procedurename, any param[])
end prototypes

public subroutine setlanguage (string language);o.language = language
end subroutine

public subroutine addcode (string script);o.addcode(script)
end subroutine

public subroutine reset ();o.reset()
end subroutine

public function string getlanguage ();return o.language
end function

public subroutine settimeout (long milliseconds);o.timeout = milliseconds
end subroutine

public function long gettimeout ();return o.timeout
end function

public function any eval (string script);return o.eval(script)
end function

public function any run (string procedurename, any param1);return o.run(procedurename, param1)
end function

public function any run (string procedurename);return o.run(procedurename)
end function

public function any run (string procedurename, any param1, any param2);return o.run(procedurename, param1, param2)
end function

public function any run (string procedurename, any param1, any param2, any param3);return o.run(procedurename, param1, param2, param3)
end function

public function any apply (string procedurename, any param[]);any a

choose case upperbound(param)
	case 0
		a = run(procedurename)
	case 1
		a = run(procedurename, param[1])
	case 2
		a = run(procedurename, param[1], param[2])
	case 3
		a = run(procedurename, param[1], param[2], param[3])
end choose

return a
end function

on n_script_control.create
call super::create
TriggerEvent( this, "constructor" )
end on

on n_script_control.destroy
TriggerEvent( this, "destructor" )
call super::destroy
end on

event constructor;o = create oleobject
o.connecttonewobject( "MSScriptControl.ScriptControl")
this.setlanguage( 'JavaScript')
end event

event destructor;o.disconnectobject()
end event