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79 lines
2.1 KiB
79 lines
2.1 KiB
#include "util.h"
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#include "string_bytes.h"
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#include "node_buffer.h"
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#include <stdio.h>
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namespace node {
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using v8::Isolate;
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using v8::Local;
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using v8::String;
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using v8::Value;
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template <typename T>
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static void MakeUtf8String(Isolate* isolate,
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Local<Value> value,
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T* target) {
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Local<String> string = value->ToString(isolate);
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if (string.IsEmpty())
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return;
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const size_t storage = StringBytes::StorageSize(isolate, string, UTF8) + 1;
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target->AllocateSufficientStorage(storage);
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const int flags =
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String::NO_NULL_TERMINATION | String::REPLACE_INVALID_UTF8;
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const int length = string->WriteUtf8(target->out(), storage, 0, flags);
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target->SetLengthAndZeroTerminate(length);
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}
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Utf8Value::Utf8Value(Isolate* isolate, Local<Value> value) {
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if (value.IsEmpty())
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return;
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MakeUtf8String(isolate, value, this);
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}
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TwoByteValue::TwoByteValue(Isolate* isolate, Local<Value> value) {
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if (value.IsEmpty()) {
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return;
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}
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Local<String> string = value->ToString(isolate);
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if (string.IsEmpty())
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return;
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// Allocate enough space to include the null terminator
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const size_t storage = string->Length() + 1;
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AllocateSufficientStorage(storage);
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const int flags =
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String::NO_NULL_TERMINATION | String::REPLACE_INVALID_UTF8;
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const int length = string->Write(out(), 0, storage, flags);
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SetLengthAndZeroTerminate(length);
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}
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BufferValue::BufferValue(Isolate* isolate, Local<Value> value) {
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// Slightly different take on Utf8Value. If value is a String,
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// it will return a Utf8 encoded string. If value is a Buffer,
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// it will copy the data out of the Buffer as is.
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if (value.IsEmpty()) {
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// Dereferencing this object will return nullptr.
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Invalidate();
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return;
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}
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if (value->IsString()) {
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MakeUtf8String(isolate, value, this);
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} else if (Buffer::HasInstance(value)) {
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const size_t len = Buffer::Length(value);
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// Leave place for the terminating '\0' byte.
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AllocateSufficientStorage(len + 1);
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memcpy(out(), Buffer::Data(value), len);
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SetLengthAndZeroTerminate(len);
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} else {
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Invalidate();
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}
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}
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} // namespace node
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