api: add checkversion to public api

api/api.lua

@@ -20,6 +20,27 @@ function pfUI.api.strsplit(delimiter, subject)
   return unpack(fields)
 end
 
+-- [ checkversion ]
+-- Compares a given version (major,minor,fix) and compares it to the current
+-- 'chkmajor'   [number]        the major number to check
+-- 'chkminor'   [number]        the minor number to check
+-- 'chkfix'     [number]        the fix number to check
+--
+-- return:      [boolean]       true when the current version is smaller or equal
+--                              to the given value, otherwise returns nil.
+local major, minor, fix = nil, nil, nil
+function pfUI.api.checkversion(chkmajor, chkminor, chkfix)
+  if not major and not minor and not fix then
+    -- load and convert current version
+    major, minor, fix = pfUI.api.strsplit(".", tostring(pfUI_config.version))
+    major, minor, fix = tonumber(major) or 0, tonumber(minor) or 0, tonumber(fix) or 0
+  end
+
+  local chkversion = chkmajor + chkminor/100 + chkfix/10000
+  local curversion = major + minor/100 + fix/10000
+  return curversion <= chkversion and true or nil
+end
+
 -- [ UnitInRange ]
 -- Returns whether a party/raid member is nearby.
 -- It takes care of the rangecheck module if existing.

api/config.lua

@@ -1,3 +1,6 @@
+-- load pfUI environment
+setfenv(1, pfUI:GetEnvironment())
+
 function pfUI:UpdateConfig(group, subgroup, entry, value)
   -- create empty config if not existing
   if not pfUI_config then
@@ -852,18 +855,6 @@ function pfUI:LoadConfig()
 end
 
 function pfUI:MigrateConfig()
-  -- config version
-  local major, minor, fix = pfUI.api.strsplit(".", tostring(pfUI_config.version))
-  local major = tonumber(major) or 0
-  local minor = tonumber(minor) or 0
-  local fix   = tonumber(fix)   or 0
-
-  local function checkversion(chkmajor, chkminor, chkfix)
-    local chkversion = chkmajor + chkminor/100 + chkfix/10000
-    local curversion = major + minor/100 + fix/10000
-    return curversion <= chkversion and true or nil
-  end
-
   -- migrating to new fonts (1.5 -> 1.6)
   if checkversion(1, 6, 0) then
     -- migrate font_default