mirror of
https://github.com/nodejs/node.git
synced 2026-11-09 15:11:11 -05:00
Jason Ginchereau
468275ac79
This API doesn't serve much purpose, and is only likely to cause confusion and bugs. The intention was that this would return the number of characters in a string independent of encoding, but that's not generally useful. In almost all cases, one of the encoding-specific napi_get_value_string_* APIs is more correct. (Pass a null buffer if only the encoded length is desired.) Anyway the current implementation of napi_get_value_string_length() is technically wrong: it returns the number of 2-byte code units of the UTF-16 encoding, but there are actually some characters that are encoded as two UTF-16 code units. Note the JavaScript String.prototype.length property returns the number of UTF-16 code units, which may be different from the number of characters. So, getting the true character count is not common with JavaScript, and is probably best left to specialized internationalization libraries. PR-URL: https://github.com/nodejs/node/pull/12496 Fixes: https://github.com/nodejs/abi-stable-node/issues/226 Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com> Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
221 lines
6.1 KiB
C
221 lines
6.1 KiB
C
#include <node_api.h>
|
|
#include "../common.h"
|
|
|
|
napi_value TestLatin1(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_CALL(env, napi_typeof(env, args[0], &valuetype));
|
|
|
|
NAPI_ASSERT(env, valuetype == napi_string,
|
|
"Wrong type of argment. Expects a string.");
|
|
|
|
char buffer[128];
|
|
size_t buffer_size = 128;
|
|
size_t copied;
|
|
|
|
NAPI_CALL(env,
|
|
napi_get_value_string_latin1(env, args[0], buffer, buffer_size, &copied));
|
|
|
|
napi_value output;
|
|
NAPI_CALL(env, napi_create_string_latin1(env, buffer, copied, &output));
|
|
|
|
return output;
|
|
}
|
|
|
|
napi_value TestUtf8(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_CALL(env, napi_typeof(env, args[0], &valuetype));
|
|
|
|
NAPI_ASSERT(env, valuetype == napi_string,
|
|
"Wrong type of argment. Expects a string.");
|
|
|
|
char buffer[128];
|
|
size_t buffer_size = 128;
|
|
size_t copied;
|
|
|
|
NAPI_CALL(env,
|
|
napi_get_value_string_utf8(env, args[0], buffer, buffer_size, &copied));
|
|
|
|
napi_value output;
|
|
NAPI_CALL(env, napi_create_string_utf8(env, buffer, copied, &output));
|
|
|
|
return output;
|
|
}
|
|
|
|
napi_value TestUtf16(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_CALL(env, napi_typeof(env, args[0], &valuetype));
|
|
|
|
NAPI_ASSERT(env, valuetype == napi_string,
|
|
"Wrong type of argment. Expects a string.");
|
|
|
|
char16_t buffer[128];
|
|
size_t buffer_size = 128;
|
|
size_t copied;
|
|
|
|
NAPI_CALL(env,
|
|
napi_get_value_string_utf16(env, args[0], buffer, buffer_size, &copied));
|
|
|
|
napi_value output;
|
|
NAPI_CALL(env, napi_create_string_utf16(env, buffer, copied, &output));
|
|
|
|
return output;
|
|
}
|
|
|
|
napi_value TestLatin1Insufficient(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_CALL(env, napi_typeof(env, args[0], &valuetype));
|
|
|
|
NAPI_ASSERT(env, valuetype == napi_string,
|
|
"Wrong type of argment. Expects a string.");
|
|
|
|
char buffer[4];
|
|
size_t buffer_size = 4;
|
|
size_t copied;
|
|
|
|
NAPI_CALL(env,
|
|
napi_get_value_string_latin1(env, args[0], buffer, buffer_size, &copied));
|
|
|
|
napi_value output;
|
|
NAPI_CALL(env, napi_create_string_latin1(env, buffer, copied, &output));
|
|
|
|
return output;
|
|
}
|
|
|
|
napi_value TestUtf8Insufficient(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_CALL(env, napi_typeof(env, args[0], &valuetype));
|
|
|
|
NAPI_ASSERT(env, valuetype == napi_string,
|
|
"Wrong type of argment. Expects a string.");
|
|
|
|
char buffer[4];
|
|
size_t buffer_size = 4;
|
|
size_t copied;
|
|
|
|
NAPI_CALL(env,
|
|
napi_get_value_string_utf8(env, args[0], buffer, buffer_size, &copied));
|
|
|
|
napi_value output;
|
|
NAPI_CALL(env, napi_create_string_utf8(env, buffer, copied, &output));
|
|
|
|
return output;
|
|
}
|
|
|
|
napi_value TestUtf16Insufficient(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_CALL(env, napi_typeof(env, args[0], &valuetype));
|
|
|
|
NAPI_ASSERT(env, valuetype == napi_string,
|
|
"Wrong type of argment. Expects a string.");
|
|
|
|
char16_t buffer[4];
|
|
size_t buffer_size = 4;
|
|
size_t copied;
|
|
|
|
NAPI_CALL(env,
|
|
napi_get_value_string_utf16(env, args[0], buffer, buffer_size, &copied));
|
|
|
|
napi_value output;
|
|
NAPI_CALL(env, napi_create_string_utf16(env, buffer, copied, &output));
|
|
|
|
return output;
|
|
}
|
|
|
|
napi_value Utf16Length(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_CALL(env, napi_typeof(env, args[0], &valuetype));
|
|
|
|
NAPI_ASSERT(env, valuetype == napi_string,
|
|
"Wrong type of argment. Expects a string.");
|
|
|
|
size_t length;
|
|
NAPI_CALL(env, napi_get_value_string_utf16(env, args[0], NULL, 0, &length));
|
|
|
|
napi_value output;
|
|
NAPI_CALL(env, napi_create_number(env, (double)length, &output));
|
|
|
|
return output;
|
|
}
|
|
|
|
napi_value Utf8Length(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_CALL(env, napi_typeof(env, args[0], &valuetype));
|
|
|
|
NAPI_ASSERT(env, valuetype == napi_string,
|
|
"Wrong type of argment. Expects a string.");
|
|
|
|
size_t length;
|
|
NAPI_CALL(env, napi_get_value_string_utf8(env, args[0], NULL, 0, &length));
|
|
|
|
napi_value output;
|
|
NAPI_CALL(env, napi_create_number(env, (double)length, &output));
|
|
|
|
return output;
|
|
}
|
|
|
|
void Init(napi_env env, napi_value exports, napi_value module, void* priv) {
|
|
napi_property_descriptor properties[] = {
|
|
DECLARE_NAPI_PROPERTY("TestLatin1", TestLatin1),
|
|
DECLARE_NAPI_PROPERTY("TestLatin1Insufficient", TestLatin1Insufficient),
|
|
DECLARE_NAPI_PROPERTY("TestUtf8", TestUtf8),
|
|
DECLARE_NAPI_PROPERTY("TestUtf8Insufficient", TestUtf8Insufficient),
|
|
DECLARE_NAPI_PROPERTY("TestUtf16", TestUtf16),
|
|
DECLARE_NAPI_PROPERTY("TestUtf16Insufficient", TestUtf16Insufficient),
|
|
DECLARE_NAPI_PROPERTY("Utf16Length", Utf16Length),
|
|
DECLARE_NAPI_PROPERTY("Utf8Length", Utf8Length),
|
|
};
|
|
|
|
NAPI_CALL_RETURN_VOID(env, napi_define_properties(
|
|
env, exports, sizeof(properties) / sizeof(*properties), properties));
|
|
}
|
|
|
|
NAPI_MODULE(addon, Init)
|