thin-provisioning-tools/base/progress_monitor.cc
2014-09-01 14:44:37 +01:00

79 lines
1.6 KiB
C++

#include "base/progress_monitor.h"
#include <iostream>
//----------------------------------------------------------------
namespace {
using namespace std;
class progress_bar : public base::progress_monitor {
public:
progress_bar(string const &title)
: title_(title),
progress_width_(50),
spinner_(0) {
update_percent(0);
}
~progress_bar() {
cout << "\n";
}
void update_percent(unsigned p) {
unsigned nr_equals = max<unsigned>(progress_width_ * p / 100, 1);
unsigned nr_spaces = progress_width_ - nr_equals;
cout << title_ << ": [";
for (unsigned i = 0; i < nr_equals - 1; i++)
cout << '=';
if (nr_equals < progress_width_)
cout << '>';
for (unsigned i = 0; i < nr_spaces; i++)
cout << ' ';
cout << "] " << spinner_char() << " " << p << "%\r" << flush;
spinner_++;
}
private:
char spinner_char() const {
char cs[] = {'|', '/', '-', '\\'};
unsigned index = spinner_ % sizeof(cs);
return cs[index];
}
std::string title_;
unsigned progress_width_;
unsigned spinner_;
};
class quiet_progress : public base::progress_monitor {
public:
void update_percent(unsigned p) {
}
};
}
//----------------------------------------------------------------
std::auto_ptr<base::progress_monitor>
base::create_progress_bar(std::string const &title)
{
return auto_ptr<progress_monitor>(new progress_bar(title));
}
std::auto_ptr<base::progress_monitor>
base::create_quiet_progress_monitor()
{
return auto_ptr<progress_monitor>(new quiet_progress());
}
//----------------------------------------------------------------