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-rw-r--r--battery-widget/battery.lua23
1 files changed, 16 insertions, 7 deletions
diff --git a/battery-widget/battery.lua b/battery-widget/battery.lua
index 452d7ef..4b02a7c 100644
--- a/battery-widget/battery.lua
+++ b/battery-widget/battery.lua
@@ -125,20 +125,25 @@ local function worker(user_args)
local battery_info = {}
local capacities = {}
for s in stdout:gmatch("[^\r\n]+") do
+ -- Match a line with status and charge level
local status, charge_str, _ = string.match(s, '.+: ([%a%s]+), (%d?%d?%d)%%,?(.*)')
if status ~= nil then
+ -- Enforce that for each entry in battery_info there is an
+ -- entry in capacities of zero. If a battery has status
+ -- "Unknown" then there is no capacity reported and we treat it
+ -- as zero capactiy for later calculations.
table.insert(battery_info, {status = status, charge = tonumber(charge_str)})
- else
- local cap_str = string.match(s, '.+:.+last full capacity (%d+)')
- table.insert(capacities, tonumber(cap_str))
+ table.insert(capacities, 0)
end
- end
- local capacity = 0
- for _, cap in ipairs(capacities) do
- capacity = capacity + cap
+ -- Match a line where capacity is reported
+ local cap_str = string.match(s, '.+:.+last full capacity (%d+)')
+ if cap_str ~= nil then
+ capacities[#capacities] = tonumber(cap_str) or 0
+ end
end
+ local capacity = 0
local charge = 0
local status
for i, batt in ipairs(battery_info) do
@@ -148,7 +153,11 @@ local function worker(user_args)
-- this is arbitrary, and maybe another metric should be used
end
+ -- Adds up total (capacity-weighted) charge and total capacity.
+ -- It effectively ignores batteries with status "Unknown" as we
+ -- treat them with capacity zero.
charge = charge + batt.charge * capacities[i]
+ capacity = capacity + capacities[i]
end
end
charge = charge / capacity