示例#1
0
func foreachFunc(helper *structure.Helper, values *structure.RequestData) []byte {
	if len(helper.Arguments) != 0 {
		switch helper.Arguments[0].Name {
		case "posts":
			var buffer bytes.Buffer
			for index, _ := range values.Posts {
				//if values.Posts[index].Id != 0 { // If post is not empty (Commented out for now. This was only neccessary in previous versions, when the array length was always the postsPerPage length)
				values.CurrentPostIndex = index
				buffer.Write(executeHelper(helper, values, 1)) // context = post
				//}
			}
			return buffer.Bytes()
		case "tags":
			var buffer bytes.Buffer
			for index, _ := range values.Posts[values.CurrentPostIndex].Tags {
				//if values.Posts[values.CurrentPostIndex].Tags[index].Id != 0 { // If tag is not empty (Commented out for now. Not neccessary.)
				values.CurrentTagIndex = index
				buffer.Write(executeHelper(helper, values, 2)) // context = tag
				//}
			}
			return buffer.Bytes()
		case "navigation":
			var buffer bytes.Buffer
			for index, _ := range values.Blog.NavigationItems {
				values.CurrentNavigationIndex = index
				buffer.Write(executeHelper(helper, values, 4)) // context = navigation
			}
			return buffer.Bytes()
		default:
			return []byte{}
		}
	}
	return []byte{}
}
示例#2
0
func contentForFunc(helper *structure.Helper, values *structure.RequestData) []byte {
	// If there is no array attached to the request data already, make one
	if values.ContentForHelpers == nil {
		values.ContentForHelpers = make([]structure.Helper, 0)
	}
	// Collect all contentFor helpers to use them with a block helper
	values.ContentForHelpers = append(values.ContentForHelpers, *helper)
	return []byte{}
}
示例#3
0
func executeHelper(helper *structure.Helper, values *structure.RequestData, context int) []byte {
	// Set context and set it back to the old value once fuction returns
	defer setCurrentHelperContext(values, values.CurrentHelperContext)
	values.CurrentHelperContext = context

	block := helper.Block
	indexTracker := 0
	extended := false
	var extendHelper *structure.Helper
	for index, child := range helper.Children {
		// Handle extend helper
		if index == 0 && child.Name == "!<" {
			extended = true
			extendHelper = compiledTemplates.m[string(child.Function(&child, values))]
		} else {
			var buffer bytes.Buffer
			toAdd := child.Function(&child, values)
			buffer.Write(block[:child.Position+indexTracker])
			buffer.Write(toAdd)
			buffer.Write(block[child.Position+indexTracker:])
			block = buffer.Bytes()
			indexTracker += len(toAdd)
		}
	}
	if extended {
		extendHelper.BodyHelper.Block = block
		return executeHelper(extendHelper, values, values.CurrentHelperContext) // TODO: not sure if context = values.CurrentHelperContext is right.
	}
	return block
}
示例#4
0
// Helper fuctions
func nullFunc(helper *structure.Helper, values *structure.RequestData) []byte {
	// Check if the helper was defined in a plugin
	if plugins.LuaPool != nil {
		// Get a state map to execute and attach it to the request data
		if values.PluginVMs == nil {
			values.PluginVMs = plugins.LuaPool.Get(helper, values)
		}
		if values.PluginVMs[helper.Name] != nil {
			pluginResult, err := plugins.Execute(helper, values)
			if err != nil {
				return []byte{}
			}
			return evaluateEscape(pluginResult, helper.Unescaped)
		} else {
			// This helper is not implemented in a plugin. Get rid of the Lua VMs
			plugins.LuaPool.Put(values.PluginVMs)
			values.PluginVMs = nil
		}
	}
	log.Println("Warning: This helper is not implemented:", helper.Name)
	return []byte{}
}
示例#5
0
func Execute(helper *structure.Helper, values *structure.RequestData) ([]byte, error) {
	// Retrieve the lua state
	vm := values.PluginVMs[helper.Name]
	// Execute plugin
	err := vm.CallByParam(lua.P{Fn: vm.GetGlobal(helper.Name), NRet: 1, Protect: true})
	if err != nil {
		log.Println("Error while executing plugin for helper "+helper.Name+":", err)
		// Since the vm threw an error, close all vms and don't put the map back into the pool
		for _, luavm := range values.PluginVMs {
			luavm.Close()
		}
		values.PluginVMs = nil
		return []byte{}, err
	}
	// Get return value from vm
	ret := vm.ToString(-1)
	return []byte(ret), nil
}
示例#6
0
func setCurrentHelperContext(values *structure.RequestData, context int) {
	values.CurrentHelperContext = context
}