vortex/sim/common/stringutil.h
Blaise Tine d47cccc157 Vortex 2.0 changes:
+ Microarchitecture optimizations
+ 64-bit support
+ Xilinx FPGA support
+ LLVM-16 support
+ Refactoring and quality control fixes
2023-10-19 20:51:22 -07:00

78 lines
2 KiB
C++

// Copyright © 2019-2023
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#include <iostream>
#include <iomanip>
class ByteStream : public std::istream {
public:
ByteStream(const void *buf, std::size_t size) : buf_(buf), size_(size) {}
friend std::ostream& operator<<(std::ostream& os, const ByteStream& obj) {
auto oldflags = os.flags();
auto oldwidth = os.width();
auto oldfill = os.fill();
for (std::size_t i = 0, n = obj.size_; i < n; ++i) {
int byte = *((uint8_t*)obj.buf_ + (n - 1 - i));
os << std::hex << std::setw(2) << std::setfill('0') << byte;
}
os.fill(oldfill);
os.width(oldwidth);
os.flags(oldflags);
return os;
}
private:
const void *buf_;
std::size_t size_;
};
class IndentStream : public std::streambuf {
public:
explicit IndentStream(std::streambuf* dest, int indent = 4)
: dest_(dest)
, isBeginLine_(true)
, indent_(indent, ' ')
, owner_(nullptr)
{}
explicit IndentStream(std::ostream& dest, int indent = 4)
: dest_(dest.rdbuf())
, isBeginLine_(true)
, indent_(indent, ' ')
, owner_(&dest) {
owner_->rdbuf(this);
}
virtual ~IndentStream() {
if (owner_)
owner_->rdbuf(dest_);
}
protected:
virtual int overflow(int ch) {
if (isBeginLine_ && ch != '\n') {
dest_->sputn(indent_.data(), indent_.size());
}
isBeginLine_ = ch == '\n';
return dest_->sputc(ch);
}
private:
std::streambuf* dest_;
bool isBeginLine_;
std::string indent_;
std::ostream* owner_;
};