Waybar/src/modules/disk.cpp

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2019-09-23 20:25:54 +00:00
#include "modules/disk.hpp"
using namespace waybar::util;
waybar::modules::Disk::Disk(const std::string& id, const Json::Value& config)
: ALabel(config, "disk", id, "{}%", 30)
, path_("/")
{
thread_ = [this] {
dp.emit();
thread_.sleep_for(interval_);
};
if (config["path"].isString()) {
path_ = config["path"].asString();
}
}
auto waybar::modules::Disk::update() -> void {
struct statvfs /* {
unsigned long f_bsize; // filesystem block size
unsigned long f_frsize; // fragment size
fsblkcnt_t f_blocks; // size of fs in f_frsize units
fsblkcnt_t f_bfree; // # free blocks
fsblkcnt_t f_bavail; // # free blocks for unprivileged users
fsfilcnt_t f_files; // # inodes
fsfilcnt_t f_ffree; // # free inodes
fsfilcnt_t f_favail; // # free inodes for unprivileged users
unsigned long f_fsid; // filesystem ID
unsigned long f_flag; // mount flags
unsigned long f_namemax; // maximum filename length
}; */ stats;
int err = statvfs(path_.c_str(), &stats);
/* Conky options
fs_bar - Bar that shows how much space is used
fs_free - Free space on a file system
fs_free_perc - Free percentage of space
fs_size - File system size
fs_used - File system used space
*/
if (err != 0) {
event_box_.hide();
return;
}
auto free = pow_format(stats.f_bavail * stats.f_bsize, "B", true);
auto used = pow_format((stats.f_blocks - stats.f_bavail) * stats.f_bsize, "B", true);
auto total = pow_format(stats.f_blocks * stats.f_bsize, "B", true);
label_.set_markup(fmt::format(format_
, stats.f_bavail * 100 / stats.f_blocks
, fmt::arg("free", free)
, fmt::arg("percentage_free", stats.f_bavail * 100 / stats.f_blocks)
, fmt::arg("used", used)
, fmt::arg("percentage_used", (stats.f_blocks - stats.f_bavail) * 100 / stats.f_blocks)
, fmt::arg("total", total)
, fmt::arg("path", path_)
));
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if (tooltipEnabled()) {
std::string tooltip_format = "{used} used out of {total} on {path} ({percentage_used}%)";
if (config_["tooltip-format"].isString()) {
tooltip_format = config_["tooltip-format"].asString();
}
label_.set_tooltip_text(fmt::format(tooltip_format
, stats.f_bavail * 100 / stats.f_blocks
, fmt::arg("free", free)
, fmt::arg("percentage_free", stats.f_bavail * 100 / stats.f_blocks)
, fmt::arg("used", used)
, fmt::arg("percentage_used", (stats.f_blocks - stats.f_bavail) * 100 / stats.f_blocks)
, fmt::arg("total", total)
, fmt::arg("path", path_)
));
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}
event_box_.show();
}