mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-10-01 01:26:06 -04:00
34fefd1cad
* Add file reader * Add a simple test example of parsing settings. * Use new FileLineReader to parse Glass presets * Trim CRLF from Glass preset name
90 lines
2.4 KiB
C++
90 lines
2.4 KiB
C++
/*
|
|
* Copyright (C) 2023 Kyle Reed
|
|
*
|
|
* This file is part of PortaPack.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, Inc., 51 Franklin Street,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "file.hpp"
|
|
#include <cstring>
|
|
#include <cstdio>
|
|
#include <string>
|
|
|
|
/* Mocks the File interface with a backing string. */
|
|
class MockFile {
|
|
public:
|
|
using Error = File::Error;
|
|
using Offset = File::Offset;
|
|
using Size = File::Size;
|
|
template <typename T>
|
|
using Result = File::Result<T>;
|
|
|
|
MockFile(std::string data)
|
|
: data_{std::move(data)} {}
|
|
|
|
Size size() { return data_.size(); }
|
|
|
|
Result<Offset> seek(uint32_t offset) {
|
|
if ((int32_t)offset < 0)
|
|
return {static_cast<Error>(FR_BAD_SEEK)};
|
|
|
|
auto previous = offset_;
|
|
|
|
if (offset > size())
|
|
data_.resize(offset);
|
|
|
|
offset_ = offset;
|
|
return previous;
|
|
}
|
|
|
|
Result<Offset> truncate() {
|
|
data_.resize(offset_);
|
|
return offset_;
|
|
}
|
|
|
|
Result<Size> read(void* data, Size bytes_to_read) {
|
|
if (offset_ + bytes_to_read > size())
|
|
bytes_to_read = size() - offset_;
|
|
|
|
if (bytes_to_read == 0 || bytes_to_read > size()) // NB: underflow wrap
|
|
return 0;
|
|
|
|
memcpy(data, &data_[offset_], bytes_to_read);
|
|
offset_ += bytes_to_read;
|
|
return bytes_to_read;
|
|
}
|
|
|
|
Result<Size> write(const void* data, Size bytes_to_write) {
|
|
auto new_offset = offset_ + bytes_to_write;
|
|
if (new_offset >= size())
|
|
data_.resize(new_offset);
|
|
|
|
memcpy(&data_[offset_], data, bytes_to_write);
|
|
offset_ = new_offset;
|
|
return bytes_to_write;
|
|
}
|
|
|
|
Optional<Error> sync() {
|
|
return {};
|
|
}
|
|
|
|
std::string data_;
|
|
uint32_t offset_{0};
|
|
};
|