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#include "progress-bar.hh"
#include "util.hh"
#include "sync.hh"
#include <map>
namespace nix {
class ProgressBar : public Logger
{
private:
struct ActInfo
{
Activity * activity;
Verbosity lvl;
std::string s;
};
struct Progress
{
uint64_t expected = 0, progress = 0;
};
struct State
{
std::list<ActInfo> activities;
std::map<Activity *, std::list<ActInfo>::iterator> its;
std::map<std::string, Progress> progress;
};
Sync<State> state_;
public:
~ProgressBar()
{
auto state(state_.lock());
assert(state->activities.empty());
writeToStderr("\r\e[K");
}
void log(Verbosity lvl, const FormatOrString & fs) override
{
auto state(state_.lock());
log(*state, lvl, fs.s);
}
void log(State & state, Verbosity lvl, const std::string & s)
{
writeToStderr("\r\e[K" + s + "\n");
update(state);
}
void startActivity(Activity & activity, Verbosity lvl, const FormatOrString & fs) override
{
if (lvl > verbosity) return;
auto state(state_.lock());
state->activities.emplace_back(ActInfo{&activity, lvl, fs.s});
state->its.emplace(&activity, std::prev(state->activities.end()));
update(*state);
}
void stopActivity(Activity & activity) override
{
auto state(state_.lock());
auto i = state->its.find(&activity);
if (i == state->its.end()) return;
state->activities.erase(i->second);
state->its.erase(i);
update(*state);
}
void setExpected(const std::string & label, uint64_t value) override
{
auto state(state_.lock());
state->progress[label].expected = value;
}
void setProgress(const std::string & label, uint64_t value) override
{
auto state(state_.lock());
state->progress[label].progress = value;
}
void incExpected(const std::string & label, uint64_t value) override
{
auto state(state_.lock());
state->progress[label].expected += value;
}
void incProgress(const std::string & label, uint64_t value) override
{
auto state(state_.lock());
state->progress[label].progress += value;
}
void update()
{
auto state(state_.lock());
}
void update(State & state)
{
std::string line = "\r";
std::string status = getStatus(state);
if (!status.empty()) {
line += '[';
line += status;
line += "]";
}
if (!state.activities.empty()) {
if (!status.empty()) line += " ";
line += state.activities.rbegin()->s;
}
line += "\e[K";
writeToStderr(line);
}
std::string getStatus(State & state)
{
std::string res;
for (auto & p : state.progress)
if (p.second.expected || p.second.progress) {
if (!res.empty()) res += ", ";
res += std::to_string(p.second.progress);
if (p.second.expected) {
res += "/";
res += std::to_string(p.second.expected);
}
res += " "; res += p.first;
}
return res;
}
};
StartProgressBar::StartProgressBar()
{
if (isatty(STDERR_FILENO)) {
prev = logger;
logger = new ProgressBar();
}
}
StartProgressBar::~StartProgressBar()
{
if (prev) {
auto bar = logger;
logger = prev;
delete bar;
}
}
}
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