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#include <cstdarg>
#include "env-inl.h"
#include "node_process.h"
#include "util.h"
namespace node {
using v8::Context;
using v8::Function;
using v8::HandleScope;
using v8::Isolate;
using v8::Just;
using v8::Local;
using v8::Maybe;
using v8::MaybeLocal;
using v8::NewStringType;
using v8::Nothing;
using v8::Object;
using v8::String;
using v8::Value;
MaybeLocal<Value> ProcessEmit(Environment* env,
const char* event,
Local<Value> message) {
// Send message to enable debug in cluster workers
Local<Object> process = env->process_object();
Isolate* isolate = env->isolate();
Local<Value> argv[] = {OneByteString(isolate, event), message};
return MakeCallback(isolate, process, "emit", arraysize(argv), argv, {0, 0});
}
Maybe<bool> ProcessEmitWarningGeneric(Environment* env,
const char* warning,
const char* type,
const char* code) {
HandleScope handle_scope(env->isolate());
Context::Scope context_scope(env->context());
Local<Object> process = env->process_object();
Local<Value> emit_warning;
if (!process->Get(env->context(), env->emit_warning_string())
.ToLocal(&emit_warning)) {
return Nothing<bool>();
}
if (!emit_warning->IsFunction()) return Just(false);
int argc = 0;
Local<Value> args[3]; // warning, type, code
// The caller has to be able to handle a failure anyway, so we might as well
// do proper error checking for string creation.
if (!String::NewFromUtf8(env->isolate(), warning, NewStringType::kNormal)
.ToLocal(&args[argc++])) {
return Nothing<bool>();
}
if (type != nullptr) {
if (!String::NewFromOneByte(env->isolate(),
reinterpret_cast<const uint8_t*>(type),
NewStringType::kNormal)
.ToLocal(&args[argc++])) {
return Nothing<bool>();
}
if (code != nullptr &&
!String::NewFromOneByte(env->isolate(),
reinterpret_cast<const uint8_t*>(code),
NewStringType::kNormal)
.ToLocal(&args[argc++])) {
return Nothing<bool>();
}
}
// MakeCallback() unneeded because emitWarning is internal code, it calls
// process.emit('warning', ...), but does so on the nextTick.
if (emit_warning.As<Function>()
->Call(env->context(), process, argc, args)
.IsEmpty()) {
return Nothing<bool>();
}
return Just(true);
}
// Call process.emitWarning(str), fmt is a snprintf() format string
Maybe<bool> ProcessEmitWarning(Environment* env, const char* fmt, ...) {
char warning[1024];
va_list ap;
va_start(ap, fmt);
vsnprintf(warning, sizeof(warning), fmt, ap);
va_end(ap);
return ProcessEmitWarningGeneric(env, warning);
}
Maybe<bool> ProcessEmitDeprecationWarning(Environment* env,
const char* warning,
const char* deprecation_code) {
return ProcessEmitWarningGeneric(
env, warning, "DeprecationWarning", deprecation_code);
}
} // namespace node