1 files changed, 102 insertions, 0 deletions
diff --git a/lain/widgets/contrib/tpbat/smapi.lua b/lain/widgets/contrib/tpbat/smapi.lua
new file mode 100644
index 0000000..c7f093e
--- /dev/null
+++ b/lain/widgets/contrib/tpbat/smapi.lua
@@ -0,0 +1,102 @@
+
+--[[
+                                                  
+     smapi.lua                                    
+     Interface with thinkpad battery information  
+                                                  
+     Licensed under GNU General Public License v2 
+      * (c) 2013, Conor Heine                     
+                                                  
+--]]
+
+local first_line   = require("lain.helpers").first_line
+
+local string       = { format = string.format }
+local tonumber     = tonumber
+local setmetatable = setmetatable
+
+local smapi = {}
+
+local apipath = "/sys/devices/platform/smapi"
+
+-- Most are readable values, but some can be written to (not implemented, yet?)
+local readable = {
+    barcoding                  = true,
+    charging_max_current       = true,
+    charging_max_voltage       = true,
+    chemistry                  = true,
+    current_avg                = true,
+    current_now                = true,
+    cycle_count                = true,
+    design_capacity            = true,
+    design_voltage             = true,
+    dump                       = true,
+    first_use_date             = true,
+    force_discharge            = false,
+    group0_voltage             = true,
+    group1_voltage             = true,
+    group2_voltage             = true,
+    group3_voltage             = true,
+    inhibit_charge_minutes     = false,
+    installed                  = true,
+    last_full_capacity         = true,
+    manufacture_date           = true,
+    manufacturer               = true,
+    model                      = true,
+    power_avg                  = true,
+    power_now                  = true,
+    remaining_capacity         = true,
+    remaining_charging_time    = true,
+    remaining_percent          = true,
+    remaining_percent_error    = true,
+    remaining_running_time     = true,
+    remaining_running_time_now = true,
+    serial                     = true,
+    start_charge_thresh        = false,
+    state                      = true,
+    stop_charge_thresh         = false,
+    temperature                = true,
+    voltage                    = true,
+}
+
+function smapi:battery(name)
+    local bat = {}
+
+    bat.name = name
+    bat.path = apipath .. "/" .. name
+
+    function bat:get(item)
+        return self.path ~= nil and readable[item] and first_line(self.path .. "/" .. item) or nil
+    end
+
+    function bat:installed()
+        return self:get("installed") == "1"
+    end
+
+    function bat:status()
+        return self:get('state')
+    end
+
+    -- Remaining time can either be time until battery dies or time until charging completes
+    function bat:remaining_time()
+        local time_val = bat_now.status == 'discharging' and 'remaining_running_time' or 'remaining_charging_time'
+        local mins_left = self:get(time_val)
+
+        if mins_left:find("^%d+") == nil
+        then
+            return "N/A"
+        end
+
+        local hrs = math.floor(mins_left / 60)
+        local min = mins_left % 60
+        return string.format("%02d:%02d", hrs, min)
+    end
+
+    function bat:percent()
+        return tonumber(self:get("remaining_percent"))
+    end
+
+    return setmetatable(bat, {__metatable = false, __newindex = false})
+end
+
+return smapi