Added util.getFriendlySize() (#3381)

* Added util.getFriendlySize()

* Allow for GB

frontend/apps/filemanager/filemanagerbookinfo.lua

@@ -52,14 +52,7 @@ function BookInfo:show(file, book_props)
     local directory, filename = util.splitFilePathName(file)
     local filename_without_suffix, filetype = util.splitFileNameSuffix(filename) -- luacheck: no unused
     local file_size = lfs.attributes(file, "size") or 0
-    local size
-    if file_size > 1024*1024 then
-        size = string.format("%4.1f MB", file_size/1024/1024)
-    elseif file_size > 1024 then
-        size = string.format("%4.1f KB", file_size/1024)
-    else
-        size = string.format("%d B", file_size)
-    end
+    local size = util.getFriendlySize(file_size)
     table.insert(kv_pairs, { _("Filename:"), filename })
     table.insert(kv_pairs, { _("Format:"), filetype:upper() })
     table.insert(kv_pairs, { _("Size:"), size })

frontend/ui/widget/filechooser.lua

@@ -9,6 +9,7 @@ local util = require("ffi/util")
 local _ = require("gettext")
 local Screen = Device.screen
 local getFileNameSuffix = require("util").getFileNameSuffix
+local getFriendlySize = require("util").getFriendlySize
 
 ffi.cdef[[
 int strcoll (const char *str1, const char *str2);
@@ -188,14 +189,7 @@ function FileChooser:genItemTableFromPath(path)
     for _, file in ipairs(files) do
         local full_path = self.path.."/"..file.name
         local file_size = lfs.attributes(full_path, "size") or 0
-        local sstr
-        if file_size > 1024*1024 then
-            sstr = string.format("%4.1f MB", file_size/1024/1024)
-        elseif file_size > 1024 then
-            sstr = string.format("%4.1f KB", file_size/1024)
-        else
-            sstr = string.format("%d B", file_size)
-        end
+        local sstr = getFriendlySize(file_size)
         local file_item = {
             text = file.name,
             mandatory = sstr,

frontend/util.lua

@@ -352,6 +352,23 @@ function util.getFileNameSuffix(file)
     return suffix
 end
 
+--- Gets human friendly size as string
+---- @int size (bytes)
+---- @treturn string
+function util.getFriendlySize(size)
+    local s
+    if size > 1024*1024*1024 then
+        s = string.format("%4.1f GB", size/1024/1024/1024)
+    elseif size > 1024*1024 then
+        s = string.format("%4.1f MB", size/1024/1024)
+    elseif size > 1024 then
+        s = string.format("%4.1f KB", size/1024)
+    else
+        s = string.format("%d B", size)
+    end
+    return s
+end
+
 --- Adds > to touch menu items with a submenu
 function util.getMenuText(item)
     local text

plugins/coverbrowser.koplugin/bookinfomanager.lua

@@ -133,15 +133,7 @@ end
 -- DB management
 function BookInfoManager:getDbSize()
     local file_size = lfs.attributes(self.db_location, "size") or 0
-    local sstr
-    if file_size > 1024*1024 then
-        sstr = string.format("%4.1f MB", file_size/1024/1024)
-    elseif file_size > 1024 then
-        sstr = string.format("%4.1f KB", file_size/1024)
-    else
-        sstr = string.format("%d B", file_size)
-    end
-    return sstr
+    return require("util").getFriendlySize(file_size)
 end
 
 function BookInfoManager:createDB()