properly print config errors when loading config file

config.lua

@@ -114,10 +114,11 @@ local function loadConfigFile()
     local config_file_function = assert(loadstring(config_file_data))
     local config_object = config_file_function()
     local schema_errors = validateConfigFile(config_object)
-    if schema_errors then
-        for name, errors in pairs(schema_errors) do
-            log('CONFIG ERROR' .. writeSchemaErrors(errors, log))
-        end
+
+    local total_count = table.pprint(schema_errors, {call=function() end})
+    if total_count > 0 then
+        log('CONFIG ERROR')
+        table.pprint(schema_errors, {call=log})
     end
     return config_object
 end

main.lua

@@ -8,6 +8,7 @@
 
 local ctx = require('ctx')
 local config = require('config')
+require('util')
 
 ctx:loadFromConfig(config.loadConfigFile())
 

util.lua

@@ -4,21 +4,24 @@ function table.len(t)
   return count
 end
 
-function table.pprint(t, ident, total_count)
+function table.pprint(t, options, ident, total_count)
     local ident = ident or 0
     local total_count = total_count or 0
+
+    local options = options or {}
+    local print_function = options.call or print
     if type(t) == 'table' then
         local count = 0
         for k, v in pairs(t) do
-            print(string.rep('\t', ident) .. k)
+            print_function(string.rep('\t', ident) .. k)
             count = count + 1
-            total_count = pprint(v, ident + 1, total_count)
+            total_count = table.pprint(v, options, ident + 1, total_count)
         end
         if count == 0 then
             --print('<empty table>')
         end
     else
-        print(string.rep('\t', ident) .. tostring(t))
+        print_function(string.rep('\t', ident) .. tostring(t))
         total_count = total_count + 1
     end
     return total_count