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/*
* To include generic versions of the in typemaps, add:
*
* %typemap(in) (void *, size_t) = (const void* buffer_data, const size_t buffer_len);
* %typemap(typecheck) (void *, size_t) = (const void* buffer_data, const size_t buffer_len);
*
* or to discriminate by argument names:
* %typemap(in) (void *data, size_t length) = (const void* buffer_data, const size_t buffer_len);
* %typemap(typecheck) (void *data, size_t length) = (const void* buffer_data, const size_t buffer_len);
*/
%typemap(in) (const void* buffer_data, const size_t buffer_len) {
if ($input.IsBuffer()) {
Napi::Buffer<char> buf = $input.As<Napi::Buffer<char>>();
$1 = reinterpret_cast<void *>(buf.Data());
$2 = buf.ByteLength();
} else {
SWIG_exception_fail(SWIG_TypeError, "in method '$symname', argument is not a Buffer");
}
}
%typemap(typecheck, precedence=SWIG_TYPECHECK_VOIDPTR) (const void* buffer_data, const size_t buffer_len) {
$1 = $input.IsBuffer();
}
/*
* In order to use the argout typemap, the function must have the following signature:
*
* void buffer(void **buffer_data, size_t *buffer_len)
*
* In this case, this function will be wrapped by a JS function that takes
* no arguments (because of numinputs=0) and returns a Buffer
*/
%typemap(in, numinputs=0) (void **buffer_data, size_t *buffer_len) (void *temp_data, size_t temp_len) {
$1 = &temp_data;
$2 = &temp_len;
}
%typemap(argout) (void **buffer_data, size_t *buffer_len) {
if (*$1 != nullptr) {
Napi::Buffer<char> buf = Napi::Buffer<char>::Copy(env, reinterpret_cast<char *>(*$1), *$2);
NAPI_CHECK_RESULT(buf.As<Napi::Value>(), $result);
} else {
$result = env.Null();
}
}
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