| rev | line source | 
| poelzi@31 | 1 --[[-- | 
| jbe@46 | 2 return_value =            -- return value of executed chunk | 
| jbe@46 | 3 execute.chunk{ | 
| poelzi@31 | 4   file_path = file_path,  -- path to a lua source or byte-code file | 
| poelzi@31 | 5   app       = app,        -- app name to use or the current will be used | 
| poelzi@31 | 6   module    = module,     -- module where chunk is located | 
| jbe@46 | 7   chunk     = chunk       -- name of chunk (filename without .lua extension) | 
| poelzi@32 | 8   id        = id,         -- id to be returned by param.get_id(...) during execution | 
| poelzi@32 | 9   params    = params      -- parameters to be returned by param.get(...) during execution | 
| poelzi@31 | 10 } | 
| poelzi@31 | 11 | 
| jbe@205 | 12 This function loads and executes a lua file specified by a given path or constructs a path to load from the module and chunk name. A chunk name should always begin with an underscore. All return values of the loaded and executed chunk are returned by this function as well. | 
| poelzi@31 | 13 | 
| poelzi@31 | 14 --]]-- | 
| poelzi@31 | 15 | 
| jbe@205 | 16 local function pack_return_values(...) | 
| jbe@205 | 17   local storage = {...} | 
| jbe@205 | 18   storage.n = select("#", ...) | 
| jbe@205 | 19 end | 
| jbe@205 | 20 | 
| jbe@205 | 21 local function unpack_return_values(storage) | 
| jbe@205 | 22   return table.unpack(storage, 1, storage.n) | 
| jbe@205 | 23 end | 
| jbe@205 | 24 | 
| jbe@46 | 25 function execute.chunk(args) | 
| poelzi@31 | 26   local file_path = args.file_path | 
| jbe@206 | 27   local app       = args.app or WEBMCP_APP_NAME | 
| poelzi@31 | 28   local module    = args.module | 
| poelzi@31 | 29   local chunk     = args.chunk | 
| poelzi@32 | 30   local id        = args.id | 
| poelzi@32 | 31   local params    = args.params | 
| poelzi@31 | 32 | 
| jbe@46 | 33   file_path = file_path or encode.file_path( | 
| jbe@206 | 34     WEBMCP_BASE_PATH, 'app', app, module, chunk .. '.lua' | 
| jbe@46 | 35   ) | 
| poelzi@32 | 36 | 
| poelzi@31 | 37   local func, load_errmsg = loadfile(file_path) | 
| poelzi@31 | 38   if not func then | 
| poelzi@31 | 39     error('Could not load file "' .. file_path .. '": ' .. load_errmsg) | 
| poelzi@31 | 40   end | 
| poelzi@32 | 41 | 
| poelzi@32 | 42   if id or params then | 
| poelzi@32 | 43     param.exchange(id, params) | 
| poelzi@32 | 44   end | 
| poelzi@32 | 45 | 
| jbe@205 | 46   local result = pack_return_values(func()) | 
| poelzi@32 | 47 | 
| poelzi@32 | 48   if id or params then | 
| poelzi@32 | 49     param.restore() | 
| poelzi@32 | 50   end | 
| poelzi@32 | 51 | 
| jbe@205 | 52   return unpack_return_values(result) | 
| poelzi@31 | 53 end |