I'm having problems when trying to open a file that is in Unicode.
Is there a way to read the contents? I tried AJAX and fsObj but they both only return the first character of the content of the file. When the file is not saved in unicode it works fine.
Yes, it's necessary that the file is in unicode.

Hopefully someone can help me.

You can do it with the Scripting.FileSystemObject.

See this page for more info.

code:

---

/*

    _readFile coded by Matty

    This function will read the contents of a file and print out the contents regardless of being unicode or ansi.
    If you use this function please make sure to give credit where credit is due.

*/

function OnEvent_Initialize(MessengerStart) {
    _readFile('C:\\WndSelect.handler.js', true);
}

function _readFile(_s_file, _is_debugging){
    /* Use the windows api function CreateFileW to open the file ONLY if it already exists */
    var _h_file = Interop.Call('kernel32', 'CreateFileW', '\\\\?\\'+_s_file,
                                                          0x80000000 /* GENERIC_READ */,
                                                          0x01 /* FILE_SHARE_READ */,
                                                          0,
                                                          3 /* OPEN_EXISTING */,
                                                          0,
                                                          0);
    /* Check to make sure the pointer is actually to a file instead of an invalid handle */
    if (_h_file > -1 /* INVALID_HANDLE_VALUE */) {
        if (_is_debugging === true) Debug.Trace('_h_file : '+_h_file);
        /* Now that we have a pointer to the file its time to read the size of the file so we know how much to read */
        var _n_size = Interop.Call('kernel32', 'GetFileSize', _h_file, 0);
        if (_is_debugging === true) Debug.Trace('_n_size : '+_n_size);
        /* Create a buffer to read in the data and another buffer to store the number of bytes that have been read */
        var _n_buffer = Interop.Allocate((2*_n_size)+2);
        var _n_bytes_read = Interop.Allocate(4);
        /* Read the file */
        Interop.Call('kernel32', 'ReadFile', _h_file, _n_buffer, _n_size, _n_bytes_read, 0);
        /* Close the file */
        Interop.Call('kernel32', 'CloseHandle', _h_file);
       
        /* Check if the file is unicode, if it is read the contents of _n_buffer as unicode, otherwise read it as ansi */
        if (_n_buffer.ReadString(0, false) === 'ÿþv'){
            if (_is_debugging === true) Debug.Trace('_n_buffer : '+_n_buffer.ReadString(0, true));
            return _n_buffer.ReadString(0, true);
        } else {
            if (_is_debugging === true) Debug.Trace('_n_buffer : '+_n_buffer.ReadString(0, false));
            return _n_buffer.ReadString(0, false);
        }
    }
}

---

As usual, I am going to take Matty's code apart and optimize it!

code:

---

/*----------
Title:       _ReadFile
Description: Read the contents of a file, whether it is Unicode or ASCII.
Author:      Eljay <leejeffery@gmail.com>
----------*/

function _ReadFile(Path){
  var Handle = Interop.Call("kernel32", "CreateFileW", Path, 0x80000000, 1, 0, 3, 0, 0);
  if(Handle == -1) return; //If file doesn't exist, just exit function.
  var FileSize = Interop.Call("kernel32", "GetFileSize", Handle, 0);
  var Buffer = Interop.Allocate(FileSize + 1);
  var BytesRead = Interop.Allocate(4);
  Interop.Call("kernel32", "ReadFile", Handle, Buffer, FileSize, BytesRead, 0);
  var IsUnicode = Interop.Call("advapi32", "IsTextUnicode", Buffer, FileSize, 0);
  Interop.Call("kernel32", "CloseHandle", Handle);
  if(IsUnicode) return Buffer.ReadString(2, true, (FileSize / 2) - 1);
  else return Buffer.ReadString(0, false, FileSize);
}

---

quote:

---

Originally posted by Eljay
+Removed first 2 bytes from Unicode files (this doesn't contain file data, just encoding information).

---

quote:

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Originally posted by Eljay
+Read whole file, not just up to first null byte (third parameter of ReadString).

---

quote:

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Originally posted by CookieRevised

quote:

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Originally posted by Eljay
+Read whole file, not just up to first null byte (third parameter of ReadString).

---

ReadString will read x bytes (3rd parameter) if it does not encounter a null byte sooner.

---

quote:

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Size
[number,optional] The size (in characters) of the string to read. If not specified, Messenger Plus! stops at the first null character.

---

Yeah,...

Personally I still see this as a (annoying ) bug. However, Patcou does not and I can see his POV too. ReadString works like C++ works regarding strings where a null byte is always considered as the end of a string.

Hence why he included ReadBSTR (after some whining of some people ). But this is still not a 'good' solution, as you see in the "read contents of file" example code above.

more about this:
[BUG] WriteString() doesn't handle BSTR's as BSTR's
(only accessable for beta testers)