AlliedModders - Reverse UTF-8 String! Arabic Chat!

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Reverse UTF-8 String! Arabic Chat!

Hello, I have problem i try to Reverse a UTF-8 word but it's don't appear correct i have tried 2 codes.
The language i test in utf-8 arabic. First i try this code:

PHP Code:


		
			
#include <amxmodx>



public plugin_init()

{

    register_clcmd("say", "hook")

}



public hook(id)

{

    

    new said[192], cmd[10]

    read_args(said, 191)

    

    ReverseString(said)

    

    read_argv(1, cmd, 9)

    engclient_cmd (id ,cmd ,said)

}



stock ReverseString(toggle[])

{

    for(new i = strlen(toggle) - 1, j = 0, temp ; i > j ; i--, j++)

    {

        temp = toggle[i];

        toggle[i] = toggle[j];

        toggle[j] = temp;

    }

}

This first code only Reverse english normal characters but don't work in any other utf-8 language.

Second code:

PHP Code:


		
			
#include <amxmodx>



public plugin_init()

{

    register_message(get_user_msgid("SayText"), "msgSayText")

}



public msgSayText()

{

    new said[192]

    get_msg_arg_string(4, said, 191);

    

    ReverseString(said)

    

    set_msg_arg_string(4, said);

}



stock ReverseString(toggle[])

{

    for(new i = strlen(toggle) - 1, j = 0, temp ; i > j ; i--, j++)

    {

        temp = toggle[i];

        toggle[i] = toggle[j];

        toggle[j] = temp;

    }

}

Second code works for english and when i try arabic letters some of them appear and some not appear. I have tried to change this stock that reverse the word but faild all time. So now the problem in this code or in amxmodx when it process the letters?

Solved: HERE.

Re: Reverse UTF-8 Word!

You are only reversing bytes which will work only for ASCII characters. UTF-8 characters may consist of multiple bytes. I think you may have to use AMXX 1.8.3-dev, there are some improvements regarding UTF-8 strings.

Re: Reverse UTF-8 Word!

Thanks man i understand the bytes difference. I have tested in latest dev version of amxmodx and not work also.

I forget to say that first code when write arabic nothing apear as if i don't write anything.

I have see plugin you write but not works also. Here.

If the problem regards amxmodx why not be fixed in next dev versions?

Re: Reverse UTF-8 Word!

Quote:

Originally Posted by KliPPy (Post 2452938)

He's reversing cells. Cells are 32-bits each. I'm not sure why it wouldn't work though.

Re: Reverse UTF-8 Word!

Quote:

Originally Posted by fysiks (Post 2452956)

He's reversing cells. Cells are 32-bits each. I'm not sure why it wouldn't work though.

Yes, but each of these cells really contain a single byte (a character). UTF-8 characters are actually spread across multiple cells, they don't take a single one.

Re: Reverse UTF-8 Word!

You should convert the string to UTF-16, then reverse. After that, convert the string back to UTF-8.
You can do that with this functions:

PHP Code:


		
			
// Converts MultiByte (UTF-8) to WideChar (UTF-16, UCS-2)

// Supports only 1-byte, 2-byte and 3-byte UTF-8 (unicode chars from 0x0000 to 0xFFFF), because client can't display 2-byte UTF-16

// charsmax(wcszOutput) should be >= strlen(mbszInput)

stock MultiByteToWideChar(const mbszInput[], wcszOutput[]) {

    new nOutputChars = 0;

    for (new n = 0; mbszInput[n] != EOS; n++) {

        if (mbszInput[n] < 0x80) { // 0... 1-byte ASCII

            wcszOutput[nOutputChars] = mbszInput[n];

        } else if ((mbszInput[n] & 0xE0) == 0xC0) { // 110... 2-byte UTF-8

            wcszOutput[nOutputChars] = (mbszInput[n] & 0x1F) << 6; // Upper 5 bits

            

            if ((mbszInput[n + 1] & 0xC0) == 0x80) { // Is 10... ?

                wcszOutput[nOutputChars] |= mbszInput[++n] & 0x3F; // Lower 6 bits

            } else { // Decode error

                wcszOutput[nOutputChars] = '?';

            }

        } else if ((mbszInput[n] & 0xF0) == 0xE0) { // 1110... 3-byte UTF-8

            wcszOutput[nOutputChars] = (mbszInput[n] & 0xF) << 12; // Upper 4 bits

            

            if ((mbszInput[n + 1] & 0xC0) == 0x80) { // Is 10... ?

                wcszOutput[nOutputChars] |= (mbszInput[++n] & 0x3F) << 6; // Middle 6 bits

                

                if ((mbszInput[n + 1] & 0xC0) == 0x80) { // Is 10... ?

                    wcszOutput[nOutputChars] |= mbszInput[++n] & 0x3F; // Lower 6 bits

                } else { // Decode error

                    wcszOutput[nOutputChars] = '?';

                }

            } else { // Decode error

                wcszOutput[nOutputChars] = '?';

            }

        } else { // Decode error

            wcszOutput[nOutputChars] = '?';

        }

        

        nOutputChars++;

    }

    wcszOutput[nOutputChars] = EOS;

}



// Converts WideChar (UTF-16, UCS-2) to MultiByte (UTF-8)

// Supports only 1-byte UTF-16 (0x0000 to 0xFFFF), because client can't display 2-byte UTF-16

// charsmax(mbszOutput) should be >= wcslen(wcszInput) * 3

stock WideCharToMultiByte(const wcszInput[], mbszOutput[]) {

    new nOutputChars = 0;

    for (new n = 0; wcszInput[n] != EOS; n++) {

        if (wcszInput[n] < 0x80) {

            mbszOutput[nOutputChars++] = wcszInput[n];

        } else if (wcszInput[n] < 0x800) {

            mbszOutput[nOutputChars++] = (wcszInput[n] >> 6) | 0xC0;

            mbszOutput[nOutputChars++] = (wcszInput[n] & 0x3F) | 0x80;

        } else {

            mbszOutput[nOutputChars++] = (wcszInput[n] >> 12) | 0xE0;

            mbszOutput[nOutputChars++] = ((wcszInput[n] >> 6) & 0x3F) | 0x80;

            mbszOutput[nOutputChars++] = (wcszInput[n] & 0x3F) | 0x80;

        }

    }

    mbszOutput[nOutputChars] = EOS;

}

Re: Reverse UTF-8 Word!

@PRoSToTeM@, Worked thank you very much. Now i'll continue supporting my language :) .

Re: Reverse UTF-8 Word!

raheem.1
Is it possible to put the full code?

Re: Reverse UTF-8 Word!

Quote:

Originally Posted by abdobiskra (Post 2453119)

raheem.1
Is it possible to put the full code?

I updated the first post see it.

Re: Reverse UTF-8 String! Arabic Chat!

Thx evry one for this plugin

PS:
did not work in HL ?