style(util): rename tablelength to tableSize

frontend/apps/reader/modules/readerfooter.lua

@@ -249,7 +249,7 @@ function ReaderFooter:getDataFromStatistics(title, pages)
     local statistics_data = self.ui.doc_settings:readSetting("stats")
     local sec = 'na'
     if statistics_data and statistics_data.performance_in_pages then
-        local read_pages = util.tablelength(statistics_data.performance_in_pages)
+        local read_pages = util.tableSize(statistics_data.performance_in_pages)
         local average_time_per_page = statistics_data.total_time_in_sec / read_pages
         sec = util.secondsToClock(pages * average_time_per_page, true)
     end

frontend/util.lua

@@ -46,7 +46,7 @@ function util.gsplit(str, pattern, capture)
     end)
 end
 
---https://gist.github.com/jesseadams/791673
+-- https://gist.github.com/jesseadams/791673
 function util.secondsToClock(seconds, withoutSeconds)
     seconds = tonumber(seconds)
     if seconds == 0 or seconds ~= seconds then
@@ -66,7 +66,8 @@ function util.secondsToClock(seconds, withoutSeconds)
     end
 end
 
-function util.tablelength(T)
+-- returns number of keys in a table
+function util.tableSize(T)
     local count = 0
     for _ in pairs(T) do count = count + 1 end
     return count

plugins/statistics.koplugin/main.lua

@@ -235,7 +235,7 @@ function ReaderStatistics:updateCurrentStat()
         dates[os.date("%Y-%m-%d", k)] = ""
     end
 
-    local read_pages = util.tablelength(self.data.performance_in_pages)
+    local read_pages = util.tableSize(self.data.performance_in_pages)
     local current_page = self.ui.document:getCurrentPage()
     local average_time_per_page = self.data.total_time_in_sec / read_pages
 
@@ -244,7 +244,7 @@ function ReaderStatistics:updateCurrentStat()
     table.insert(stats, { text = _("Total time"), mandatory = util.secondsToClock(self.data.total_time_in_sec, false) })
     table.insert(stats, { text = _("Total highlights"), mandatory = self.data.highlights })
     table.insert(stats, { text = _("Total notes"), mandatory = self.data.notes })
-    table.insert(stats, { text = _("Total days"), mandatory = util.tablelength(dates) })
+    table.insert(stats, { text = _("Total days"), mandatory = util.tableSize(dates) })
     table.insert(stats, { text = _("Average time per page"), mandatory = util.secondsToClock(average_time_per_page, false) })
     table.insert(stats, { text = _("Read pages/Total pages"), mandatory = read_pages .. "/" .. self.data.pages })
     return stats