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/*
This file is part of Android File Transfer For Linux.
Copyright (C) 2015-2020 Vladimir Menshakov
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef AFTL_CLI_POSIXSTREAMS_H
#define AFTL_CLI_POSIXSTREAMS_H
#include <mtp/ptp/IObjectStream.h>
#include <functional>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include <utime.h>
namespace cli
{
class BaseObjectStream: public mtp::CancellableStream
{
std::function<void (mtp::u64, mtp::u64)> _progressReporter;
mtp::u64 _current, _total;
public:
BaseObjectStream(): _current(0), _total(0) { }
virtual ~BaseObjectStream() = default;
void SetProgressReporter(const decltype(_progressReporter) & pr)
{ _progressReporter = pr; }
void SetTotal(mtp::u64 total)
{ _current = 0; _total = total; }
protected:
void Report(mtp::u64 delta)
{
if (_progressReporter)
{
_current += delta;
_progressReporter(_current, _total);
}
}
};
class ObjectInputStream final:
public BaseObjectStream,
public virtual mtp::IObjectInputStream
{
int _fd;
mtp::u64 _size;
public:
ObjectInputStream(const std::string &fname) : _fd(open(fname.c_str(), O_RDONLY))
{
if (_fd < 0)
throw std::runtime_error("cannot open file: " + fname);
struct stat st;
if (stat(fname.c_str(), &st) != 0)
throw std::runtime_error("stat failed");
_size = st.st_size;
}
~ObjectInputStream()
{ close(_fd); }
mtp::u64 GetSize() const
{ return _size; }
virtual size_t Read(mtp::u8 *data, size_t size)
{
CheckCancelled();
ssize_t r = read(_fd, data, size);
if (r < 0)
throw std::runtime_error("read failed");
Report(r);
return r;
}
};
class ObjectOutputStream final:
public BaseObjectStream,
public mtp::IObjectOutputStream
{
int _fd;
public:
ObjectOutputStream(const std::string &fname) :
_fd(open(fname.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0644))
{
if (_fd < 0)
throw std::runtime_error("cannot open file: " + fname);
}
~ObjectOutputStream()
{ close(_fd); }
virtual size_t Write(const mtp::u8 *data, size_t size)
{
CheckCancelled();
ssize_t r = write(_fd, data, size);
if (r < 0)
throw std::runtime_error("write failed");
Report(r);
return r;
}
static void SetModificationTime(const std::string &fname, time_t mtime)
{
struct utimbuf buf = {};
buf.actime = time(nullptr);
buf.modtime = mtime;
if (utime(fname.c_str(), &buf) != 0)
throw mtp::system_error("utime");
}
};
}
#endif
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