Javascript 如何创建二进制文件并将其保存到WSH（JScript）中的本地文件系统？

我花了一整天的时间寻找一种方法，从本地文件系统读取二进制文件，对其进行一些修改，然后将其保存回磁盘。脚本必须在批处理上运行，因为其他脚本必须在批处理之后运行

阅读不是问题：您可以始终将其作为文本阅读，然后将字符转换为字节。问题是将其写入磁盘

ActiveXObject（“Scripting.FileSystemObject”）

facility无法使用，因为某些字节不映射到字符，然后

Write

方法会引发异常。 我读过一篇帖子，其他地方建议使用

ADODB.Stream

，我只能做到这一点：

var foo = ...
var stream = new ActiveXObject('ADODB.Stream');
stream.Type = 1; //Means "binary".
stream.Open();
stream.Write(foo);
stream.SaveToFile('C:\\foo.bin', 2); //2 means save/create/overwrite

关于我将哪种类型的变量放入

foo

，Windows脚本主机声明：

Error:    Arguments are of the wrong type, are out of acceptable range, or are in conflict with one another.
Code:     800A0BB9
Source:   ADODB.Stream

ADODB Stream.Write方法似乎需要。由于Javascript中不存在这样的东西，所以我尝试使用一个填充数字的数组、一个字符串、一个数字、一个字符、一个十六进制表达式。。。我发现了，但你不能用这些来写任何东西

有人知道必须使用哪种类型吗？或任何其他保存二进制数据的方法？

改编自。注释以在代码中进行解释

var adTypeBinary = 1 
var adTypeText   = 2 
var adSaveCreateOverWrite = 2
var stdout = WScript.StdOut;

// Read a binary file, particularly for debugging purposes
var inStream = new ActiveXObject("ADODB.Stream");
    inStream.Type = adTypeBinary;
    inStream.Open();
    inStream.LoadFromFile("d:\\bat\\cliParser.exe");
    inStream.Position = 0;
var binData = inStream.Read();
    inStream.Close();

stdout.WriteLine( "binData " + typeof(binData)); // returns: "undefined"

// Convert binary value of "undefined" data type to "string" data type
var objRS = new ActiveXObject("ADODB.Recordset");
var DefinedSize = 1024; /* A Long value that represents the defined size, 
      in characters or bytes, of the new field. Fields that have a DefinedSize 
      greater than 255 bytes are treated as variable length columns. */
var adFldLong = 0x80;   /* Indicates that the field is a long binary field.  
      Also indicates that you can use the AppendChunk and GetChunk methods. */
var adVarChar = 201;   /* Indicates a long string value. */
    objRS.Fields.Append("test", adVarChar, DefinedSize, adFldLong);
    objRS.Open();
    objRS.AddNew();
    objRS.Fields("test").AppendChunk(binData);
var binString = objRS("test").value;
    objRS.close();

stdout.WriteLine( "binString " + typeof(binString));  // returns: "string"
    // String is now manipulable (unlike "undefined" data type)

// Write string to a file (converting string in one-byte encoding schema)

var outStreamW = new ActiveXObject("ADODB.Stream");
    outStreamW.Type = adTypeText;
      // Charset: the default value seems to be `UTF-16` (BOM `0xFFFE` for text files)
    outStreamW.Open();
    outStreamW.WriteText(binString);
    outStreamW.Position = 0;

var outStreamA = new ActiveXObject("ADODB.Stream");
    outStreamA.Type = adTypeText;
    outStreamA.Charset = "windows-1252"; // important, see `cdoCharset Module Constants`
    outStreamA.Open();

    outStreamW.CopyTo(outStreamA);      // convert encoding

    outStreamA.SaveToFile("D:\\test\\fooRus.exe", adSaveCreateOverWrite);

    outStreamW.Close();
    outStreamA.Close();

// Done. Make certain of input and output file oneness!

输出：

==> cscript D:\VB_scripts\JScripts\33330187my.js
binData unknown
binString string

==> echo n|COMP "d:\bat\cliParser.exe" "D:\test\fooRus.exe" 2>NUL
Comparing D:\bat\cliParser.exe and D:\test\fooRus.exe...
Files compare OK

==>