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/*
* notes: by srl295
* - When in NODE_HAVE_SMALL_ICU mode, ICU is linked against "stub" (null) data
* ( stubdata/libicudata.a ) containing nothing, no data, and it's also
* linked against a "small" data file which the SMALL_ICUDATA_ENTRY_POINT
* macro names. That's the "english+root" data.
*
* If icu_data_path is non-null, the user has provided a path and we assume
* it goes somewhere useful. We set that path in ICU, and exit.
* If icu_data_path is null, they haven't set a path and we want the
* "english+root" data. We call
* udata_setCommonData(SMALL_ICUDATA_ENTRY_POINT,...)
* to load up the english+root data.
*
* - when NOT in NODE_HAVE_SMALL_ICU mode, ICU is linked directly with its full
* data. All of the variables and command line options for changing data at
* runtime are disabled, as they wouldn't fully override the internal data.
* See: http://bugs.icu-project.org/trac/ticket/10924
*/
#include "node_i18n.h"
#if defined(NODE_HAVE_I18N_SUPPORT)
#include "node.h"
#include "env.h"
#include "env-inl.h"
#include "util.h"
#include "util-inl.h"
#include "v8.h"
#include <unicode/putil.h>
#include <unicode/udata.h>
#include <unicode/uidna.h>
#ifdef NODE_HAVE_SMALL_ICU
/* if this is defined, we have a 'secondary' entry point.
compare following to utypes.h defs for U_ICUDATA_ENTRY_POINT */
#define SMALL_ICUDATA_ENTRY_POINT \
SMALL_DEF2(U_ICU_VERSION_MAJOR_NUM, U_LIB_SUFFIX_C_NAME)
#define SMALL_DEF2(major, suff) SMALL_DEF(major, suff)
#ifndef U_LIB_SUFFIX_C_NAME
#define SMALL_DEF(major, suff) icusmdt##major##_dat
#else
#define SMALL_DEF(major, suff) icusmdt##suff##major##_dat
#endif
extern "C" const char U_DATA_API SMALL_ICUDATA_ENTRY_POINT[];
#endif
namespace node {
using v8::Context;
using v8::FunctionCallbackInfo;
using v8::Local;
using v8::Object;
using v8::String;
using v8::Value;
bool flag_icu_data_dir = false;
namespace i18n {
bool InitializeICUDirectory(const char* icu_data_path) {
if (icu_data_path != nullptr) {
flag_icu_data_dir = true;
u_setDataDirectory(icu_data_path);
return true; // no error
} else {
UErrorCode status = U_ZERO_ERROR;
#ifdef NODE_HAVE_SMALL_ICU
// install the 'small' data.
udata_setCommonData(&SMALL_ICUDATA_ENTRY_POINT, &status);
#else // !NODE_HAVE_SMALL_ICU
// no small data, so nothing to do.
#endif // !NODE_HAVE_SMALL_ICU
return (status == U_ZERO_ERROR);
}
}
int32_t ToUnicode(MaybeStackBuffer<char>* buf,
const char* input,
size_t length) {
UErrorCode status = U_ZERO_ERROR;
uint32_t options = UIDNA_DEFAULT;
options |= UIDNA_NONTRANSITIONAL_TO_UNICODE;
UIDNA* uidna = uidna_openUTS46(options, &status);
if (U_FAILURE(status))
return -1;
UIDNAInfo info = UIDNA_INFO_INITIALIZER;
int32_t len = uidna_nameToUnicodeUTF8(uidna,
input, length,
**buf, buf->length(),
&info,
&status);
if (status == U_BUFFER_OVERFLOW_ERROR) {
status = U_ZERO_ERROR;
buf->AllocateSufficientStorage(len);
len = uidna_nameToUnicodeUTF8(uidna,
input, length,
**buf, buf->length(),
&info,
&status);
}
if (U_FAILURE(status))
len = -1;
uidna_close(uidna);
return len;
}
int32_t ToASCII(MaybeStackBuffer<char>* buf,
const char* input,
size_t length) {
UErrorCode status = U_ZERO_ERROR;
uint32_t options = UIDNA_DEFAULT;
options |= UIDNA_NONTRANSITIONAL_TO_ASCII;
UIDNA* uidna = uidna_openUTS46(options, &status);
if (U_FAILURE(status))
return -1;
UIDNAInfo info = UIDNA_INFO_INITIALIZER;
int32_t len = uidna_nameToASCII_UTF8(uidna,
input, length,
**buf, buf->length(),
&info,
&status);
if (status == U_BUFFER_OVERFLOW_ERROR) {
status = U_ZERO_ERROR;
buf->AllocateSufficientStorage(len);
len = uidna_nameToASCII_UTF8(uidna,
input, length,
**buf, buf->length(),
&info,
&status);
}
if (U_FAILURE(status))
len = -1;
uidna_close(uidna);
return len;
}
static void ToUnicode(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
CHECK_GE(args.Length(), 1);
CHECK(args[0]->IsString());
Utf8Value val(env->isolate(), args[0]);
MaybeStackBuffer<char> buf;
int32_t len = ToUnicode(&buf, *val, val.length());
if (len < 0) {
return env->ThrowError("Cannot convert name to Unicode");
}
args.GetReturnValue().Set(
String::NewFromUtf8(env->isolate(),
*buf,
v8::NewStringType::kNormal,
len).ToLocalChecked());
}
static void ToASCII(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
CHECK_GE(args.Length(), 1);
CHECK(args[0]->IsString());
Utf8Value val(env->isolate(), args[0]);
MaybeStackBuffer<char> buf;
int32_t len = ToASCII(&buf, *val, val.length());
if (len < 0) {
return env->ThrowError("Cannot convert name to ASCII");
}
args.GetReturnValue().Set(
String::NewFromUtf8(env->isolate(),
*buf,
v8::NewStringType::kNormal,
len).ToLocalChecked());
}
void Init(Local<Object> target,
Local<Value> unused,
Local<Context> context,
void* priv) {
Environment* env = Environment::GetCurrent(context);
env->SetMethod(target, "toUnicode", ToUnicode);
env->SetMethod(target, "toASCII", ToASCII);
}
} // namespace i18n
} // namespace node
NODE_MODULE_CONTEXT_AWARE_BUILTIN(icu, node::i18n::Init)
#endif // NODE_HAVE_I18N_SUPPORT
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