Scripts discussion (1)

[Instructor]

VladSh
Должен вызывать плагин программы NSIS.
http://nsis.sourceforge.net/Category:Plugins

[KDJ]

New version SelectRangeText.js script now supports the index (line, column) and offset.

[KDJ]

I wanted to read the file creation date and convert it to a string.
The following code generates a runtime error (in the last line).

Code: Select all

var FileName = AkelPad.GetEditFile(0);
var oFSO     = new ActiveXObject("Scripting.FileSystemObject");
var oFile    = oFSO.GetFile(FileName);
var FileDate = oFile.DateCreated;
var DateStr  = FileDate.toString();

Where is the error?

[FeyFre]

KDJ, because:
From scrrun.dll embedded TypeLib

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interface IFile : IDispatch {
//...
HRESULT DateCreated([out, retval] DATE* pdate);
//...
}

And as defined in Windows SDK WTypes.idl

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typedef double DATE;

So technically this property is not instance of JScript object Date, but of type DATE - floating number of double precision(DATE - specially separated type in COM to mark number as a container of Date/Time value).
You should use it in following way:

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var DateStr  = Date(FileDate)

Or

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FileDate+1 // next day

[Infocatcher]

Where is the error?

MS JScript has some strange things.

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var FileName = AkelPad.GetEditFile(0);
var oFSO     = new ActiveXObject("Scripting.FileSystemObject");
var oFile    = oFSO.GetFile(FileName);
var FileDate = new Date(oFile.DateCreated);
WScript.Echo(FileDate.toString());
WScript.Echo(FileDate.toLocaleString());

[FeyFre]

Most of developers will brake brain while dealing with VARIANT/SAFEARRAY parts of COM.

[KDJ]

FeyFre and Infocatcher, thanks for the explanation.
By the way, I noticed that these codes work the same:
var FileDate = new Date(oFile.DateCreated);
var FileDate = Date(oFile.DateCreated);
Does this mean that "new" can be omitted?

[FeyFre]

KDJ, ask something easier.

[Infocatcher]

Code: Select all

var n = 128e10;
var d0 = Date(n);
var d1 = new Date(n);
WScript.Echo(
	typeof d0 + "\n" + // string
	typeof d1          // object
);

And you can use some useful methods (msdn) of Date object in second case.

[KDJ]

But in the case of the array is the same:

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var n = 10;
var d0 = Array(n);
var d1 = new Array(n);
WScript.Echo(
   typeof d0 + "\n" + // object
   typeof d1          // object
);

[Infocatcher]

But in the case of the array is the same

https://developer.mozilla.org/en/JavaSc ... w_Operator

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var ret = new someFunction();

should always return new object, but result of direct call

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var ret = someFunction();

depends on someFunction implementation:

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function someFunction(x) {
    return String(x);
}
var n = 128e10;
var d0 = someFunction(n);
var d1 = new someFunction(n);
WScript.Echo(
   typeof d0 + ": " + // string
   d0 + "\n" +        // "1280000000000"
   typeof d1 + ": " + // object
   d1                 // "[object Object]"
);

[KDJ]

Here I collected the differences, depending on the initialization of variables.

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//Array
var x = [];             //typeof: object
var y = Array(x);       //typeof: object
var z = new Array(x);   //typeof: object
//RegExp
var x = /a/;            //typeof: object
var y = RegExp(x);      //typeof: object
var z = new RegExp(x);  //typeof: object
//String
var x = "10";           //typeof: string
var y = String(x);      //typeof: string
var z = new String(x);  //typeof: object
//Number
var x = 10;             //typeof: number
var y = Number(x);      //typeof: number
var z = new Number(x);  //typeof: object
//Boolean
var x = true;           //typeof: boolean
var y = Boolean(x);     //typeof: boolean
var z = new Boolean(x); //typeof: object
//Date
var oFSO     = new ActiveXObject("Scripting.FileSystemObject");
var FileDate = oFSO.GetFile(AkelPad.GetEditFile(0)).DateCreated;
var x = FileDate;       //typeof: date
var y = Date(x);        //typeof: string
var z = new Date(x);    //typeof: object

In the case of Array and RegExp is always the type of object.
In the case of String, the, the type can be string or object.
And in the case of Date, the type is date, string or object.

[koros]

У меня следующая проблема - запускаю скрипт CreateSubParagraph.js с помощью Toolbar плагина:
-"Создание новой строки с отступом и существующим типом пункта" Call("Scripts::Main", 1, "CreateSubParagraph.js", "", 0)Icon("%a\AkelFiles\Plugs\Paragraph.ico")
и получаю следующую ошибку:

D:\MyAkelPad\AkelFiles\Plugs\Scripts\CreateSubParagraph.js
Строка: 6
Символ: 1
Oшибкa: 'oCh' - oпpeдeлeниe oтcyтcтвyeт
Кoд: 800A1391
Иcтoчник: Oшибкa выпoлнeния Microsoft JScript

В чем может быть затык?

[KDJ]

koros
You must also have selCompleteLine.js script:
D:\MyAkelPad\AkelFiles\Plugs\Scripts\selCompleteLine.js.
Here it is written: viewtopic.php?p=4890#p4890

[koros]

Спасибо. Помогло.