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#include <js_native_api.h>
#include <string.h>
#include "../common.h"
static napi_value CreateDataView(napi_env env, napi_callback_info info) {
size_t argc = 3;
napi_value args [3];
NAPI_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
NAPI_ASSERT(env, argc == 3, "Wrong number of arguments");
napi_valuetype valuetype0;
napi_value arraybuffer = args[0];
NAPI_CALL(env, napi_typeof(env, arraybuffer, &valuetype0));
NAPI_ASSERT(env, valuetype0 == napi_object,
"Wrong type of arguments. Expects a ArrayBuffer as the first "
"argument.");
bool is_arraybuffer;
NAPI_CALL(env, napi_is_arraybuffer(env, arraybuffer, &is_arraybuffer));
NAPI_ASSERT(env, is_arraybuffer,
"Wrong type of arguments. Expects a ArrayBuffer as the first "
"argument.");
napi_valuetype valuetype1;
NAPI_CALL(env, napi_typeof(env, args[1], &valuetype1));
NAPI_ASSERT(env, valuetype1 == napi_number,
"Wrong type of arguments. Expects a number as second argument.");
size_t byte_offset = 0;
NAPI_CALL(env, napi_get_value_uint32(env, args[1], (uint32_t*)(&byte_offset)));
napi_valuetype valuetype2;
NAPI_CALL(env, napi_typeof(env, args[2], &valuetype2));
NAPI_ASSERT(env, valuetype2 == napi_number,
"Wrong type of arguments. Expects a number as third argument.");
size_t length = 0;
NAPI_CALL(env, napi_get_value_uint32(env, args[2], (uint32_t*)(&length)));
napi_value output_dataview;
NAPI_CALL(env,
napi_create_dataview(env, length, arraybuffer,
byte_offset, &output_dataview));
return output_dataview;
}
static napi_value CreateDataViewFromJSDataView(napi_env env, napi_callback_info info) {
size_t argc = 1;
napi_value args [1];
NAPI_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
NAPI_ASSERT(env, argc == 1, "Wrong number of arguments");
napi_valuetype valuetype;
napi_value input_dataview = args[0];
NAPI_CALL(env, napi_typeof(env, input_dataview, &valuetype));
NAPI_ASSERT(env, valuetype == napi_object,
"Wrong type of arguments. Expects a DataView as the first "
"argument.");
bool is_dataview;
NAPI_CALL(env, napi_is_dataview(env, input_dataview, &is_dataview));
NAPI_ASSERT(env, is_dataview,
"Wrong type of arguments. Expects a DataView as the first "
"argument.");
size_t byte_offset = 0;
size_t length = 0;
napi_value buffer;
NAPI_CALL(env,
napi_get_dataview_info(env, input_dataview, &length, NULL,
&buffer, &byte_offset));
napi_value output_dataview;
NAPI_CALL(env,
napi_create_dataview(env, length, buffer,
byte_offset, &output_dataview));
return output_dataview;
}
EXTERN_C_START
napi_value Init(napi_env env, napi_value exports) {
napi_property_descriptor descriptors[] = {
DECLARE_NAPI_PROPERTY("CreateDataView", CreateDataView),
DECLARE_NAPI_PROPERTY("CreateDataViewFromJSDataView",
CreateDataViewFromJSDataView)
};
NAPI_CALL(env, napi_define_properties(
env, exports, sizeof(descriptors) / sizeof(*descriptors), descriptors));
return exports;
}
EXTERN_C_END
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