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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/inspector/string-util.h"
#include <cinttypes>
#include <cmath>
#include "src/base/platform/platform.h"
#include "src/inspector/protocol/Protocol.h"
#include "src/numbers/conversions.h"
namespace v8_inspector {
v8::Local<v8::String> toV8String(v8::Isolate* isolate, const String16& string) {
if (string.isEmpty()) return v8::String::Empty(isolate);
DCHECK_GT(v8::String::kMaxLength, string.length());
return v8::String::NewFromTwoByte(
isolate, reinterpret_cast<const uint16_t*>(string.characters16()),
v8::NewStringType::kNormal, static_cast<int>(string.length()))
.ToLocalChecked();
}
v8::Local<v8::String> toV8StringInternalized(v8::Isolate* isolate,
const String16& string) {
if (string.isEmpty()) return v8::String::Empty(isolate);
DCHECK_GT(v8::String::kMaxLength, string.length());
return v8::String::NewFromTwoByte(
isolate, reinterpret_cast<const uint16_t*>(string.characters16()),
v8::NewStringType::kInternalized,
static_cast<int>(string.length()))
.ToLocalChecked();
}
v8::Local<v8::String> toV8StringInternalized(v8::Isolate* isolate,
const char* str) {
return v8::String::NewFromUtf8(isolate, str, v8::NewStringType::kInternalized)
.ToLocalChecked();
}
v8::Local<v8::String> toV8String(v8::Isolate* isolate,
const StringView& string) {
if (!string.length()) return v8::String::Empty(isolate);
DCHECK_GT(v8::String::kMaxLength, string.length());
if (string.is8Bit())
return v8::String::NewFromOneByte(
isolate, reinterpret_cast<const uint8_t*>(string.characters8()),
v8::NewStringType::kNormal, static_cast<int>(string.length()))
.ToLocalChecked();
return v8::String::NewFromTwoByte(
isolate, reinterpret_cast<const uint16_t*>(string.characters16()),
v8::NewStringType::kNormal, static_cast<int>(string.length()))
.ToLocalChecked();
}
String16 toProtocolString(v8::Isolate* isolate, v8::Local<v8::String> value) {
if (value.IsEmpty() || value->IsNullOrUndefined()) return String16();
std::unique_ptr<UChar[]> buffer(new UChar[value->Length()]);
value->Write(isolate, reinterpret_cast<uint16_t*>(buffer.get()), 0,
value->Length());
return String16(buffer.get(), value->Length());
}
String16 toProtocolStringWithTypeCheck(v8::Isolate* isolate,
v8::Local<v8::Value> value) {
if (value.IsEmpty() || !value->IsString()) return String16();
return toProtocolString(isolate, value.As<v8::String>());
}
String16 toString16(const StringView& string) {
if (!string.length()) return String16();
if (string.is8Bit())
return String16(reinterpret_cast<const char*>(string.characters8()),
string.length());
return String16(string.characters16(), string.length());
}
StringView toStringView(const String16& string) {
if (string.isEmpty()) return StringView();
return StringView(string.characters16(), string.length());
}
bool stringViewStartsWith(const StringView& string, const char* prefix) {
if (!string.length()) return !(*prefix);
if (string.is8Bit()) {
for (size_t i = 0, j = 0; prefix[j] && i < string.length(); ++i, ++j) {
if (string.characters8()[i] != prefix[j]) return false;
}
} else {
for (size_t i = 0, j = 0; prefix[j] && i < string.length(); ++i, ++j) {
if (string.characters16()[i] != prefix[j]) return false;
}
}
return true;
}
namespace {
// An empty string buffer doesn't own any string data; its ::string() returns a
// default-constructed StringView instance.
class EmptyStringBuffer : public StringBuffer {
public:
StringView string() const override { return StringView(); }
};
// Contains LATIN1 text data or CBOR encoded binary data in a vector.
class StringBuffer8 : public StringBuffer {
public:
explicit StringBuffer8(std::vector<uint8_t> data) : data_(std::move(data)) {}
StringView string() const override {
return StringView(data_.data(), data_.size());
}
private:
std::vector<uint8_t> data_;
};
// Contains a 16 bit string (String16).
class StringBuffer16 : public StringBuffer {
public:
explicit StringBuffer16(String16 data) : data_(std::move(data)) {}
StringView string() const override {
return StringView(data_.characters16(), data_.length());
}
private:
String16 data_;
};
} // namespace
// static
std::unique_ptr<StringBuffer> StringBuffer::create(StringView string) {
if (string.length() == 0) return std::make_unique<EmptyStringBuffer>();
if (string.is8Bit()) {
return std::make_unique<StringBuffer8>(std::vector<uint8_t>(
string.characters8(), string.characters8() + string.length()));
}
return std::make_unique<StringBuffer16>(
String16(string.characters16(), string.length()));
}
std::unique_ptr<StringBuffer> StringBufferFrom(String16 str) {
if (str.isEmpty()) return std::make_unique<EmptyStringBuffer>();
return std::make_unique<StringBuffer16>(std::move(str));
}
std::unique_ptr<StringBuffer> StringBufferFrom(std::vector<uint8_t> str) {
if (str.empty()) return std::make_unique<EmptyStringBuffer>();
return std::make_unique<StringBuffer8>(std::move(str));
}
String16 stackTraceIdToString(uintptr_t id) {
String16Builder builder;
builder.appendNumber(static_cast<size_t>(id));
return builder.toString();
}
} // namespace v8_inspector
namespace v8_crdtp {
void SerializerTraits<v8_inspector::protocol::Binary>::Serialize(
const v8_inspector::protocol::Binary& binary, std::vector<uint8_t>* out) {
cbor::EncodeBinary(span<uint8_t>(binary.data(), binary.size()), out);
}
} // namespace v8_crdtp
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