Functions for Ascii, Unicode, and UTF8 encoding

[Arilvv 0]

There are four functions:

Asc2Unicode($AscString)

Unicode2Asc($UnicodeString)

Unicode2Utf8($UnicodeString)

Utf82Unicode($Utf8String)

Note: $AscString and $Utf8String are normal strings, and $UnicodeString should be a binarystring

Tested under Chinese Tradition (Taiwan) environment and worked fine. Hope it support all language system.

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Func Asc2Unicode($AscString)
    Local $BufferSize = StringLen($AscString) * 2
    Local $Buffer = DllStructCreate("byte[" & $BufferSize & "]")
    Local $Return = DllCall("Kernel32.dll", "int", "MultiByteToWideChar", _
        "int", 0, _
        "int", 0, _
        "str", $AscString, _
        "int", StringLen($AscString), _
        "ptr", DllStructGetPtr($Buffer), _
        "int", $BufferSize)
    Local $UnicodeString = StringLeft(DllStructGetData($Buffer, 1), $Return[0] * 2)
    $Buffer = 0
    Return $UnicodeString
EndFunc

Func Unicode2Asc($UniString)
    If Not IsBinaryString($UniString) Then
        SetError(1)
        Return $UniString
    EndIf

    Local $BufferLen = StringLen($UniString)
    Local $Input = DllStructCreate("byte[" & $BufferLen & "]")
    Local $Output = DllStructCreate("char[" & $BufferLen & "]")
    DllStructSetData($Input, 1, $UniString)
    Local $Return = DllCall("kernel32.dll", "int", "WideCharToMultiByte", _
        "int", 0, _
        "int", 0, _
        "ptr", DllStructGetPtr($Input), _
        "int", $BufferLen / 2, _
        "ptr", DllStructGetPtr($Output), _
        "int", $BufferLen, _
        "int", 0, _
        "int", 0)   
    Local $AscString = DllStructGetData($Output, 1)
    $Output = 0
    $Input = 0
    Return $AscString
EndFunc

Func Unicode2Utf8($UniString)
    If Not IsBinaryString($UniString) Then
        SetError(1)
        Return $UniString
    EndIf

    Local $UniStringLen = StringLen($UniString)
    Local $BufferLen = $UniStringLen * 2
    Local $Input = DllStructCreate("byte[" & $BufferLen & "]")
    Local $Output = DllStructCreate("char[" & $BufferLen & "]")
    DllStructSetData($Input, 1, $UniString)
    Local $Return = DllCall("kernel32.dll", "int", "WideCharToMultiByte", _
        "int", 65001, _
        "int", 0, _
        "ptr", DllStructGetPtr($Input), _
        "int", $UniStringLen / 2, _
        "ptr", DllStructGetPtr($Output), _
        "int", $BufferLen, _
        "int", 0, _
        "int", 0)   
    Local $Utf8String = DllStructGetData($Output, 1)
    $Output = 0
    $Input = 0
    Return $Utf8String
EndFunc

Func Utf82Unicode($Utf8String)
    Local $BufferSize = StringLen($Utf8String) * 2
    Local $Buffer = DllStructCreate("byte[" & $BufferSize & "]")
    Local $Return = DllCall("Kernel32.dll", "int", "MultiByteToWideChar", _
        "int", 65001, _
        "int", 0, _
        "str", $Utf8String, _
        "int", StringLen($Utf8String), _
        "ptr", DllStructGetPtr($Buffer), _
        "int", $BufferSize)
    Local $UnicodeString = StringLeft(DllStructGetData($Buffer, 1), $Return[0] * 2)
    $Buffer = 0
    Return $UnicodeString   
EndFunc

[SmOke_N 211]

I can see this being totally handy... Nice Work!!

[Fossil Rock 2]

Can you post a simple example reading a line of unicode from a text file and outting the text as asc?

I have a feeling this won't accomplish what I would like because AU3 doesn't read unicode.

[Lazycat 13]

Good work! Almost all functions works fine for me except Asc2Unicode - it's give unicode stream, but without BOM. Some programs not understand such stream. Changed this function a bit, added ability to add BOM to beginning of stream.

Func Asc2Unicode($AscString, $addBOM = false)
    Local $BufferSize = StringLen($AscString) * 2
    Local $FullUniStr = DllStructCreate("byte[" & $BufferSize + 2 & "]")
    Local $Buffer = DllStructCreate("byte[" & $BufferSize & "]", DllStructGetPtr($FullUniStr) + 2)
    Local $Return = DllCall("Kernel32.dll", "int", "MultiByteToWideChar", _
        "int", 0, _
        "int", 0, _
        "str", $AscString, _
        "int", StringLen($AscString), _
        "ptr", DllStructGetPtr($Buffer, 1), _
        "int", $BufferSize)
    DllStructSetData($FullUniStr, 1, 0xFF, 1)
    DllStructSetData($FullUniStr, 1, 0xFE, 2)
    If $addBOM then 
        Return DllStructGetData($FullUniStr, 1)
    Else
        Return DllStructGetData($Buffer, 1)
    Endif
EndFunc

Don't dig it deep, maybe this can be done simpler.

[NightGaunt 0]

I JUST had a problem that this was the solution to the problem. I also have eastern language support and occasional use of double byte characters (some Japanese customers). I'll let you know if I run in to any issues after I rework my code.

Nice work.

[Fossil Rock 2]

Is this right? I get nothing back.

$File1 = FileOpen("C:\Unicode.txt", 0)
$Unicode = FileReadLine($File1, 1)
Unicode2Asc($Unicode)
FileClose ($File1)
MsgBox(0,"",$AscString)

File used is attached.

Unicode.txt

[Lazycat 13]

Is this right? I get nothing back.

Yes, this is right. This is unicode text, which Autoit can't read natively, so you should read it as binary.

$File1 = FileOpen("C:\Unicode.txt", 4); 4 - raw read mode
$Unicode = FileRead($File1, FileGetSize("C:\Unicode.txt"))
$AscString = Unicode2Asc($Unicode)
FileClose ($File1)
MsgBox(0,"", $AscString)

[Fossil Rock 2]

Cool, that works for me with two small problems... The first character is not part of the text file and I need it to read only one line at a time. It's reading the whole file, neither problem should be too difficult to correct.

Anyone needing to convert UNICODE to ASCII / ANSI THIS WORKS!!!

I don't have a need for the other functions at this time, but I'm sure they work just as well.

Thanks for your efforts, they're greatly appreciated.

[Fossil Rock 2]

Well I guess it's harder than I first thought.

Is there a way to read a line at a time when using the binary mode?

[Lazycat 13]

Well I guess it's harder than I first thought.

Is there a way to read a line at a time when using the binary mode?

Just simple read - no, of course. But it's possible to write UDF that will scan file for line ends (it's 0D 00 0A 00 in unicode) and read only data before it.

But if file size not too big, imo simpler to convert it to ANSI before use.

Edited April 19, 2006 by Lazycat

[dabus 0]

This is awesome.

I got to do a data-migration between two domains and things should go just automatic. subinacl, your (close-to-)udf and some tweaks made things a lot easier.

[SunDog 0]

Well down

[zhao 0]

Is there any way to convert UTF-8 to GB2313?

[AngelSL 0]

Chinese throws me '0xB2'

I'm using Chinese IME, Chinese PRC.

Heres the code:

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#Compiler_Res_Fileversion = 1.00
#Compiler_Res_LegalCopyright = NOT FOR RELEASE
#Compiler_Res_Comment = NOT FOR RELEASE
#Compiler_Res_Description = NOT FOR RELEASE
#Compiler_Allow_Decompile = n
#include <GUIConstants.au3>
#include <_Encoding.au3>
#include <String.au3>


$Do = GUICreate("What To Do?", 335, 66, 193, 115)
$To = GUICtrlCreateLabel("Now, do:", 8, 10, 55, 17)
$Thing = GUICtrlCreateInput("", 64, 8, 265, 21, 0x800)
GUICtrlSetBkColor($Thing, 0xFFFFFF)
$Another = GUICtrlCreateButton("Another thing to do, please!", 8, 32, 321, 31, 0)
_WhatToDoToday()
GUISetState(@SW_SHOW)


While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
        Case $Another
            _WhatToDoToday()
    EndSwitch
WEnd
Func _WhatToDoToday()
    $ran = Random(1, 500, 1)
    $1 = Utf82Unicode("ÎÒ²»ÖªµÀ")
    Switch $ran
        Case 1 to 9
            $TTDT = $1
        Case 10 to 49
            $TTDT = $1
        Case 50 to 99
            $TTDT = $1
        Case 100 to 200
            $TTDT = $1
        Case 201 to 300
            $TTDT = "Orbis PQ, foruming, chatting and AutoIt!"
        Case 301 to 400
            $TTDT = "PQ"
        Case 401 to 499
            $TTDT = "Kerning PQ"
        Case Else
            $TTDT = "Whatever you like!"
    EndSwitch
    GUICtrlSetData($Thing, $TTDT)
EndFunc

Edited June 7, 2007 by AngelSL

[lsakizada 0]

Why this little command line is not working?

The UTF-8 file does not display well the characters. Any idea whats wrong??

To test it, run from the command line the following syntax

> U2UTF8.exe 'Path to Source Unicode File' 'Path to Destination UTF-8 File'

You need to comile it first ....

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if $CmdLine[0] <> 2 then 
    MsgBox(0,0,"Uses: U2UTF8 'Path to Source Unicode File' 'Path to Destination UTF-8 File' ")
    exit
EndIf
    
Dim $UnicodeFile    = $CmdLine[1]
Dim $UTF8FILE       = $CmdLine[2]   

$File1 = FileOpen($UnicodeFile, 16); 4 - raw read mode
$Unicode = FileRead($File1, FileGetSize($UnicodeFile))
$UTF8String = Unicode2Utf8($Unicode)
FileClose ($File1)
;MsgBox(0,"", $UTF8FILE)

;MsgBox(0,"", $UTF8FILE)
$file = FileOpen($UTF8FILE,128+2)
If $file = -1 Then
    MsgBox(0, "Error", "Unable to open file.")
  ; Exit
EndIf
FileWrite($file, $UTF8String)
FileClose ($file)

Func Unicode2Utf8($UniString)
    If Not IsBinary($UniString) Then
        SetError(1)
        MsgBox(0,0,"not binary")
        Return $UniString
    EndIf

    Local $UniStringLen = StringLen($UniString)
    Local $BufferLen = $UniStringLen * 2
    Local $Input = DllStructCreate("byte[" & $BufferLen & "]")
    Local $Output = DllStructCreate("char[" & $BufferLen & "]")
    DllStructSetData($Input, 1, $UniString)
    Local $Return = DllCall("kernel32.dll", "int", "WideCharToMultiByte", _
        "int", 65001, _
        "int", 0, _
        "ptr", DllStructGetPtr($Input), _
        "int", $UniStringLen / 2, _
        "ptr", DllStructGetPtr($Output), _
        "int", $BufferLen, _
        "int", 0, _
        "int", 0)   
    Local $Utf8String = DllStructGetData($Output, 1)
    $Output = 0
    $Input = 0
    Return $Utf8String
EndFunc

[Dhilip89 11]

Sorry for bumping old topic, I think something wrong in the code.

Func Utf82Unicode($Utf8String)
    Local $BufferSize = StringLen($Utf8String) * 2
    Local $Buffer = DllStructCreate("byte[" & $BufferSize & "]")
    Local $Return = DllCall("Kernel32.dll", "int", "MultiByteToWideChar", _
        "int", 65001, _
        "int", 0, _
        "str", $Utf8String, _
        "int", StringLen($Utf8String), _
        "ptr", DllStructGetPtr($Buffer), _
        "int", $BufferSize)
    Local $UnicodeString = StringLeft(DllStructGetData($Buffer, 1), $Return[0] * 2)
    $Buffer = 0
    Return $UnicodeString   
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Edited October 12, 2007 by Dhilip89

[Luigi 38]

Hi, I search a code to convert a word or a character to unicode in format u00xx... likes json use.

This topic is help me in this function, and I rewrite this:

Question, this is a best way to do this?

I can't understand because the original script reply 0x6100 and not 0x0061, why?

What I want is a code to input a any character, and return the unicode format in u0001, u0002, u003f, like something...

Thanks

; http://www.autoitscript.com/forum/topic/21815-functions-for-ascii-unicode-and-utf8-encoding/#entry174115
Local $character = 'a'
ConsoleWrite(Asc2Unicode($character) & @LF); print \u0061

Func Asc2Unicode($input)
    If StringLen($input) <> 1 Then Return SetError(-1, -1, -1)
    Local $FullUniStr = DllStructCreate('byte[3]')
    Local $Buffer = DllStructCreate('byte[2]', DllStructGetPtr($FullUniStr) + 2)
    Local $Return = DllCall('Kernel32.dll', 'int', 'MultiByteToWideChar', _
            'int', 0, _
            'int', 0, _
            'str', $input, _
            'int', StringLen($input), _
            'ptr', DllStructGetPtr($Buffer, 1), _
            'int', 2)
    DllStructSetData($FullUniStr, 1, 0xFF, 1)
    DllStructSetData($FullUniStr, 1, 0xFE, 2)
    Local $temp = DllStructGetData($Buffer, 1)
    Return '\u' & StringMid($temp, 5, 2) & StringMid($temp, 3, 2)
EndFunc   ;==>Asc2Unicode

Edited August 28, 2013 by detefon

[jchd 1,514]

Necroing a 6-7 years old thread in examples is not the best way to get help. Help forum exists for a reason.

Furthermore, you rely on an old version and code that shouldn't have remained here as it offers ugly workaround to non-existing issues.

AutoIt strings use UCS-2 encoding, a subset of UTF16-LE Unicode limited to one 16-bit word per character.

AscW("x") returns the value of the Unicode codepoint passed. Just concatenate "u" with the Hex representation of that value and you're done.

Search help file if needed for completing the homework.

[Luigi 38]

Sorry for the mistake, this will not be repeated.

[ptrex 162]

@detefon

The unicode representation of the letter "a" = U+0061 or JSON like 0061

http://www.utf8-chartable.de/

Unicode
code point character UTF-8
(hex.) U+0061 a 61 LATIN SMALL  A

 

@jchd

Did you mean?

ConsoleWrite("--- \u" & Hex(AscW("a"),4) & @CRLF)

 

Rgds

ptrex