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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_PROGRESSBAR_H
#define AFTL_CLI_PROGRESSBAR_H
#include <string>
#include <mtp/types.h>
#include <mtp/log.h>
#include <stdio.h>
namespace cli
{
class EventProgressBar
{
std::string _title;
int _steps;
mtp::u64 _current;
public:
EventProgressBar(const std::string &title, int steps = 1000): _title(title), _steps(steps), _current(0) { }
void operator()(mtp::u64 offset, mtp::u64 total)
{
auto current = offset * _steps / total;
if (current != _current || offset >= total)
{
_current = current;
mtp::print(":progress ", _title, " ", offset, " ", total);
}
}
};
class ProgressBar
{
static const unsigned Junk = 9;
std::string _title;
int _width;
int _maxWidth;
unsigned _percentage;
public:
ProgressBar(const std::string & title, int w, int max): _width(w), _percentage(-1)
{
_maxWidth = max - _width - Junk;
if (_maxWidth < 1)
throw std::runtime_error("insufficient space for progress bar");
int titleSize = mtp::OutputStream::Utf8Length(title);
if (titleSize > _maxWidth)
{
int chompLeft = _maxWidth / 2; //utf unaware, fixme
int chompRight = _maxWidth - chompLeft;
_title = title.substr(0, chompLeft) + "…" + title.substr(title.size() - chompRight);
}
else
_title = title;
}
void operator()(mtp::u64 current, mtp::u64 total)
{
unsigned percentage = total? current * 100 / total: 100;
if (_percentage != percentage)
{
_percentage = percentage;
printf("%3u%% [", percentage );
unsigned width = total? current * _width / total: _width;
unsigned spaces = _width - width;
while(width--)
fputc('=', stdout);
while(spaces--)
fputc(' ', stdout);
printf("] %s\n\033[1A\033[2K", _title.c_str());
}
}
};
}
#endif
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