Waybar/src/modules/disk.cpp

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#include "modules/disk.hpp"
using namespace waybar::util;
waybar::modules::Disk::Disk(const std::string& id, const Json::Value& config)
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: ALabel(config, "disk", id, "{}%", 30), path_("/") {
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thread_ = [this] {
dp.emit();
thread_.sleep_for(interval_);
};
if (config["path"].isString()) {
path_ = config["path"].asString();
}
if (config["unit"].isString()) {
unit_ = config["unit"].asString();
}
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}
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
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}; */
stats;
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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;
}
float specific_free, specific_used, specific_total, divisor;
divisor = calc_specific_divisor(unit_);
specific_free = (stats.f_bavail * stats.f_frsize) / divisor;
specific_used = ((stats.f_blocks - stats.f_bfree) * stats.f_frsize) / divisor;
specific_total = (stats.f_blocks * stats.f_frsize) / divisor;
auto free = pow_format(stats.f_bavail * stats.f_frsize, "B", true);
auto used = pow_format((stats.f_blocks - stats.f_bfree) * stats.f_frsize, "B", true);
auto total = pow_format(stats.f_blocks * stats.f_frsize, "B", true);
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auto percentage_used = (stats.f_blocks - stats.f_bfree) * 100 / stats.f_blocks;
auto format = format_;
auto state = getState(percentage_used);
if (!state.empty() && config_["format-" + state].isString()) {
format = config_["format-" + state].asString();
}
if (format.empty()) {
event_box_.hide();
} else {
event_box_.show();
label_.set_markup(fmt::format(
fmt::runtime(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", percentage_used), fmt::arg("total", total),
fmt::arg("path", path_), fmt::arg("specific_free", specific_free),
fmt::arg("specific_used", specific_used), fmt::arg("specific_total", specific_total)));
}
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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(
fmt::runtime(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", percentage_used), fmt::arg("total", total),
fmt::arg("path", path_), fmt::arg("specific_free", specific_free),
fmt::arg("specific_used", specific_used), fmt::arg("specific_total", specific_total)));
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}
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// Call parent update
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ALabel::update();
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}
float waybar::modules::Disk::calc_specific_divisor(std::string divisor) {
if (divisor == "kB") {
return 1000.0;
} else if (divisor == "kiB") {
return 1024.0;
} else if (divisor == "MB") {
return 1000.0 * 1000.0;
} else if (divisor == "MiB") {
return 1024.0 * 1024.0;
} else if (divisor == "GB") {
return 1000.0 * 1000.0 * 1000.0;
} else if (divisor == "GiB") {
return 1024.0 * 1024.0 * 1024.0;
} else if (divisor == "TB") {
return 1000.0 * 1000.0 * 1000.0 * 1000.0;
} else if (divisor == "TiB") {
return 1024.0 * 1024.0 * 1024.0 * 1024.0;
} else { // default to Bytes if it is anything that we don't recongnise
return 1.0;
}
}