tdlight/tdutils/td/utils/TlStorerToString.h

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//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2023
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#pragma once
#include "td/utils/common.h"
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#include "td/utils/SharedSlice.h"
#include "td/utils/Slice.h"
#include "td/utils/StackAllocator.h"
#include "td/utils/StringBuilder.h"
#include "td/utils/UInt.h"
namespace td {
class TlStorerToString {
decltype(StackAllocator::alloc(0)) buffer_ = StackAllocator::alloc(1 << 14);
StringBuilder sb_ = StringBuilder(buffer_.as_slice(), true);
size_t shift_ = 0;
void store_field_begin(Slice name) {
sb_.append_char(shift_, ' ');
if (!name.empty()) {
sb_ << name << " = ";
}
}
void store_field_end() {
sb_.push_back('\n');
}
void store_binary(Slice data) {
static const char *hex = "0123456789ABCDEF";
sb_ << "{ ";
for (auto c : data) {
unsigned char byte = c;
sb_.push_back(hex[byte >> 4]);
sb_.push_back(hex[byte & 15]);
sb_.push_back(' ');
}
sb_.push_back('}');
}
public:
TlStorerToString() = default;
TlStorerToString(const TlStorerToString &) = delete;
TlStorerToString &operator=(const TlStorerToString &) = delete;
TlStorerToString(TlStorerToString &&) = delete;
TlStorerToString &operator=(TlStorerToString &&) = delete;
void store_field(Slice name, const string &value) {
store_field_begin(name);
sb_.push_back('"');
sb_ << value;
sb_.push_back('"');
store_field_end();
}
void store_field(Slice name, const SecureString &value) {
store_field_begin(name);
sb_ << "<secret>";
store_field_end();
}
template <class T>
void store_field(Slice name, const T &value) {
store_field_begin(name);
sb_ << value;
store_field_end();
}
void store_bytes_field(Slice name, const SecureString &value) {
store_field_begin(name);
sb_ << "<secret>";
store_field_end();
}
template <class BytesT>
void store_bytes_field(Slice name, const BytesT &value) {
static const char *hex = "0123456789ABCDEF";
store_field_begin(name);
sb_ << "bytes [" << value.size() << "] { ";
size_t len = min(static_cast<size_t>(64), value.size());
for (size_t i = 0; i < len; i++) {
int b = value[static_cast<int>(i)] & 0xff;
sb_.push_back(hex[b >> 4]);
sb_.push_back(hex[b & 15]);
sb_.push_back(' ');
}
if (len < value.size()) {
sb_ << "...";
}
sb_.push_back('}');
store_field_end();
}
template <class ObjectT>
void store_object_field(CSlice name, const ObjectT *value) {
if (value == nullptr) {
store_field(name, Slice("null"));
} else {
value->store(*this, name.c_str());
}
}
void store_field(Slice name, const UInt128 &value) {
store_field_begin(name);
store_binary(as_slice(value));
store_field_end();
}
void store_field(Slice name, const UInt256 &value) {
store_field_begin(name);
store_binary(as_slice(value));
store_field_end();
}
void store_vector_begin(Slice field_name, size_t vector_size) {
store_field_begin(field_name);
sb_ << "vector[" << vector_size << "] {\n";
shift_ += 2;
}
void store_class_begin(const char *field_name, Slice class_name) {
store_field_begin(Slice(field_name));
sb_ << class_name << " {\n";
shift_ += 2;
}
void store_class_end() {
CHECK(shift_ >= 2);
shift_ -= 2;
sb_.append_char(shift_, ' ');
sb_ << "}\n";
}
string move_as_string() {
return sb_.as_cslice().str();
}
};
} // namespace td