text input dialog box encoding problem

[yaroslavr32391224]

Dear AE fellows,

I'm trying to implement a text input dialog box in c++ plugin.

I use the easiest option. Namely, I implement it via inclusion of javascript code.

I consulted with the following discussion:

https://community.adobe.com/t5/after-effects/how-to-use-getprojectpath-and-other-a-utf16char-properl...

Here is my script:

std::string  script = "var text = prompt('Enter your text ', "");";

And here is my attempt to handle it:

        AEGP_MemHandle nameH = NULL;
	
	suites.UtilitySuite6()->AEGP_ExecuteScript(NULL, script.c_str(), true, &nameH, NULL);
	AEGP_MemSize size = 0;

        A_UTF16Char* nameP = NULL;
	
	suites.MemorySuite1()->AEGP_LockMemHandle(nameH, (void**)&nameP);
	suites.MemorySuite1()->AEGP_GetMemHandleSize(nameH, &size);
	
	int len = size;

	A_UTF16Char* res2 = (nameP + (len / 2));

	std::vector<unsigned char> utf8result;

	utf8::utf16to8(nameP, res2, back_inserter(utf8result));

	std::string resStr(utf8result.begin(), utf8result.end());
        
        suites.MemorySuite1()->AEGP_UnlockMemHandle(nameH);
	suites.MemorySuite1()->AEGP_FreeMemHandle(nameH);
         

 However, when I execute the plugin and save the result (resStr) of my simplest input  (letter "a") into a separate text file I obtain chinese symbols and letter d (!):

湵敤楦敮d

Could you explain what I missed?

May be I use a very difficult method to obtain the result?

Yaroslav.

[yaroslavr32391224]

I managed to find the solution (with the help of my collleauge).

 There were one mistake and one peculiar finding. First of all, the mistake:

In java script code, instead of  var text =... one should put:

std::string  script = "prompt('Enter your text ', "");";

Here is the correct code which get the user input string and stores it as std::string 

AEGP_MemHandle nameHandle = NULL;
suites.UtilitySuite5()->AEGP_ExecuteScript(NULL, script.c_str(), true, &nameHandle, NULL);

AEGP_MemSize size = 0;

A_UTF16Char* namePointer = NULL;

suites.MemorySuite1()->AEGP_LockMemHandle(nameHandle, (void**)&namePointer);
suites.MemorySuite1()->AEGP_GetMemHandleSize(nameHandle, &size);

char* res3 = (char*)namePointer;

std::string res4(res3); // the final std::string

 suites.MemorySuite1()->AEGP_UnlockMemHandle(nameHandle);
suites.MemorySuite1()->AEGP_FreeMemHandle(nameHandle);
 

What we found incredible was that despite the fact that  A_UTF16Char* obviously refers to 16char encoding.

we figured out that AE methods treated the data stored in A_UTF16Char* namePointer as ordinary (8 bit) char.

Does someone know if it is some feature of javascript?

If the plugin is to be executed on MacOs, do I have to change this piece of code?

Yaroslav.