initial commit

src/modules/uptime.zig

@@ -0,0 +1,45 @@
+const std = @import("std");
+const Module = @import("../module.zig");
+const Self = @This();
+
+module: Module,
+
+pub fn init(allocator: std.mem.Allocator) Module {
+    return .{
+        .module = .{
+            .allocator = allocator,
+            .getJsonFn = getJson,
+        },
+    };
+}
+
+pub fn getJson(module: *const Module) !Module.JSON {
+    const self = @fieldParentPtr(Self, "module", module);
+
+    var energy_full_file = try std.fs.openFileAbsolute("/sys/class/power_supply/BAT0/energy_full", .{});
+    defer energy_full_file.close();
+    var energy_now_file = try std.fs.openFileAbsolute("/sys/class/power_supply/BAT0/energy_now", .{});
+    defer energy_now_file.close();
+    var status_file = try std.fs.openFileAbsolute("/sys/class/power_supply/BAT0/status", .{});
+    defer status_file.close();
+
+    const energy_full_string = try energy_full_file.reader().readAllAlloc(self.module.allocator, 32);
+    const energy_now_string = try energy_now_file.reader().readAllAlloc(self.module.allocator, 32);
+    const status_string = try status_file.reader().readAllAlloc(self.module.allocator, 32);
+    const energy_full = try std.fmt.parseInt(u32, energy_full_string[0 .. energy_full_string.len - 1], 10);
+    const energy_now = try std.fmt.parseInt(u32, energy_now_string[0 .. energy_now_string.len - 1], 10);
+
+    const status = if (std.mem.eql(u8, status_string[0 .. status_string.len - 1], "Full"))
+        "="
+    else if (std.mem.eql(u8, status_string[0 .. status_string.len - 1], "Discharging"))
+        "v"
+    else if (std.mem.eql(u8, status_string[0 .. status_string.len - 1], "Charging"))
+        "^"
+    else
+        "?";
+    const percent_left = @as(f32, @floatFromInt(energy_now)) / @as(f32, @floatFromInt(energy_full)) * 100;
+
+    return .{
+        .full_text = try std.fmt.allocPrint(self.module.allocator, "{s} {d:.2}%", .{ status, percent_left }),
+    };
+}