[Swig-user] Problems by returning char* in function arguments using argout

[Imoteph <vip...@we...>]

Hello all,

I have a really frustrating problem trying to bind Multi-argument handling
char* type. For testing I wrote a simple function:

void chartest(char* str1, char* str2, char* b, char* t)
{
str1 = new char[strlen(b)+1];
str2 = new char[strlen(t)+1];
strcpy(str1,b);
strcpy(str2,t);
}

and add the swig instruction:

%typemap(in,numinputs=0) char* str1(char temp) {
    $1 = &temp;
}
%typemap(in,numinputs=0) char* str2(char temp) {
    $1 = &temp;
}


%typemap(argout)char* str1
{
	$result=SWIG_Python_AppendOutput($result,
PyString_FromStringAndSize($1,strlen($1)));
}
%typemap(argout)char* str2
{
	$result=SWIG_Python_AppendOutput($result,
PyString_FromStringAndSize($1,strlen($1)));
}
 
Well using this in python I get this output:

bla.chartest("k","k")
[\xb7\x0c\x7f\xee\x08\xcc\xe8z\xb7X\xe1\xb1\xbf\xd0\xc0\r\x08',
'z\xb7\x0c\x7f\xee\x08\xcc\xe8z\xb7X\xe1\xb1\xbf\xd0\xc0\r\x08']

Well, as you can think, that is not what I expected... What is wrong? Where
is my mistake?
How can I fix this?

I'm glad for any advice!

best regards 
Imoteph




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