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#include <stdlib.h>
#include <string.h>
#include <node_api.h>
#include "../../js-native-api/common.h"
static const char theText[] =
"Lorem ipsum dolor sit amet, consectetur adipiscing elit.";
static int deleterCallCount = 0;
static void deleteTheText(node_api_basic_env env,
void* data,
void* finalize_hint) {
NODE_API_BASIC_ASSERT_RETURN_VOID(data != NULL && strcmp(data, theText) == 0,
"invalid data");
(void)finalize_hint;
free(data);
deleterCallCount++;
}
static void noopDeleter(node_api_basic_env env,
void* data,
void* finalize_hint) {
NODE_API_BASIC_ASSERT_RETURN_VOID(data != NULL && strcmp(data, theText) == 0,
"invalid data");
(void)finalize_hint;
deleterCallCount++;
}
static napi_value newBuffer(napi_env env, napi_callback_info info) {
napi_value theBuffer;
char* theCopy;
const unsigned int kBufferSize = sizeof(theText);
NODE_API_CALL(env,
napi_create_buffer(
env, sizeof(theText), (void**)(&theCopy), &theBuffer));
NODE_API_ASSERT(env, theCopy, "Failed to copy static text for newBuffer");
memcpy(theCopy, theText, kBufferSize);
return theBuffer;
}
static napi_value newExternalBuffer(napi_env env, napi_callback_info info) {
napi_value theBuffer;
char* theCopy = strdup(theText);
NODE_API_ASSERT(
env, theCopy, "Failed to copy static text for newExternalBuffer");
NODE_API_CALL(env,
napi_create_external_buffer(env,
sizeof(theText),
theCopy,
deleteTheText,
NULL /* finalize_hint */,
&theBuffer));
return theBuffer;
}
static napi_value getDeleterCallCount(napi_env env, napi_callback_info info) {
napi_value callCount;
NODE_API_CALL(env, napi_create_int32(env, deleterCallCount, &callCount));
return callCount;
}
static napi_value copyBuffer(napi_env env, napi_callback_info info) {
napi_value theBuffer;
NODE_API_CALL(env, napi_create_buffer_copy(
env, sizeof(theText), theText, NULL, &theBuffer));
return theBuffer;
}
static napi_value bufferHasInstance(napi_env env, napi_callback_info info) {
size_t argc = 1;
napi_value args[1];
NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
NODE_API_ASSERT(env, argc == 1, "Wrong number of arguments");
napi_value theBuffer = args[0];
bool hasInstance;
napi_valuetype theType;
NODE_API_CALL(env, napi_typeof(env, theBuffer, &theType));
NODE_API_ASSERT(env,
theType == napi_object, "bufferHasInstance: instance is not an object");
NODE_API_CALL(env, napi_is_buffer(env, theBuffer, &hasInstance));
NODE_API_ASSERT(env, hasInstance, "bufferHasInstance: instance is not a buffer");
napi_value returnValue;
NODE_API_CALL(env, napi_get_boolean(env, hasInstance, &returnValue));
return returnValue;
}
static napi_value bufferInfo(napi_env env, napi_callback_info info) {
size_t argc = 1;
napi_value args[1];
NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
NODE_API_ASSERT(env, argc == 1, "Wrong number of arguments");
napi_value theBuffer = args[0];
char *bufferData;
napi_value returnValue;
size_t bufferLength;
NODE_API_CALL(env,
napi_get_buffer_info(
env, theBuffer, (void**)(&bufferData), &bufferLength));
NODE_API_CALL(env, napi_get_boolean(env,
!strcmp(bufferData, theText) && bufferLength == sizeof(theText),
&returnValue));
return returnValue;
}
static napi_value staticBuffer(napi_env env, napi_callback_info info) {
napi_value theBuffer;
NODE_API_CALL(env,
napi_create_external_buffer(env,
sizeof(theText),
(void*)theText,
noopDeleter,
NULL /* finalize_hint */,
&theBuffer));
return theBuffer;
}
static napi_value invalidObjectAsBuffer(napi_env env, napi_callback_info info) {
size_t argc = 1;
napi_value args[1];
NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, args, NULL, NULL));
NODE_API_ASSERT(env, argc == 1, "Wrong number of arguments");
napi_value notTheBuffer = args[0];
napi_status status = napi_get_buffer_info(env, notTheBuffer, NULL, NULL);
NODE_API_ASSERT(env,
status == napi_invalid_arg,
"napi_get_buffer_info: should fail with napi_invalid_arg "
"when passed non buffer");
return notTheBuffer;
}
static napi_value bufferFromArrayBuffer(napi_env env, napi_callback_info info) {
napi_status status;
napi_value arraybuffer;
napi_value buffer;
size_t byte_length = 1024;
void* data = NULL;
size_t buffer_length = 0;
void* buffer_data = NULL;
status = napi_create_arraybuffer(env, byte_length, &data, &arraybuffer);
NODE_API_ASSERT(env, status == napi_ok, "Failed to create arraybuffer");
status = node_api_create_buffer_from_arraybuffer(
env, arraybuffer, 0, byte_length, &buffer);
NODE_API_ASSERT(
env, status == napi_ok, "Failed to create buffer from arraybuffer");
status = napi_get_buffer_info(env, buffer, &buffer_data, &buffer_length);
NODE_API_ASSERT(env, status == napi_ok, "Failed to get buffer info");
NODE_API_ASSERT(env, buffer_length == byte_length, "Buffer length mismatch");
return buffer;
}
static napi_value Init(napi_env env, napi_value exports) {
napi_value theValue;
NODE_API_CALL(env,
napi_create_string_utf8(env, theText, sizeof(theText), &theValue));
NODE_API_CALL(env,
napi_set_named_property(env, exports, "theText", theValue));
napi_property_descriptor methods[] = {
DECLARE_NODE_API_PROPERTY("newBuffer", newBuffer),
DECLARE_NODE_API_PROPERTY("newExternalBuffer", newExternalBuffer),
DECLARE_NODE_API_PROPERTY("getDeleterCallCount", getDeleterCallCount),
DECLARE_NODE_API_PROPERTY("copyBuffer", copyBuffer),
DECLARE_NODE_API_PROPERTY("bufferHasInstance", bufferHasInstance),
DECLARE_NODE_API_PROPERTY("bufferInfo", bufferInfo),
DECLARE_NODE_API_PROPERTY("staticBuffer", staticBuffer),
DECLARE_NODE_API_PROPERTY("invalidObjectAsBuffer", invalidObjectAsBuffer),
DECLARE_NODE_API_PROPERTY("bufferFromArrayBuffer", bufferFromArrayBuffer),
};
NODE_API_CALL(env, napi_define_properties(
env, exports, sizeof(methods) / sizeof(methods[0]), methods));
return exports;
}
NAPI_MODULE(NODE_GYP_MODULE_NAME, Init)
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