Initial commit of Ocean's local development

Templates/Init.go

@@ -0,0 +1,59 @@
+package Templates
+
+import "fmt"
+import "bytes"
+import "html/template"
+import "io/ioutil"
+import "archive/zip"
+import "github.com/SommerEngineering/Ocean/CustomerDB"
+import "github.com/SommerEngineering/Ocean/Log"
+import LM "github.com/SommerEngineering/Ocean/Log/Meta"
+
+func init() {
+	Log.LogShort(senderName, LM.CategorySYSTEM, LM.LevelINFO, LM.MessageNameSTARTUP, `Starting the template engine.`)
+	defer Log.LogShort(senderName, LM.CategorySYSTEM, LM.LevelINFO, LM.MessageNameSTARTUP, `Starting the template engine done.`)
+
+	gridFS := CustomerDB.GridFS()
+	if gridFile, errGridFile := gridFS.Open(`templates.zip`); errGridFile != nil {
+		Log.LogFull(senderName, LM.CategorySYSTEM, LM.LevelERROR, LM.SeverityCritical, LM.ImpactCritical, LM.MessageNameDATABASE, `Was not able to open the templates out of the GridFS!`, errGridFile.Error())
+		return
+	} else {
+		defer gridFile.Close()
+		if data, ioError := ioutil.ReadAll(gridFile); ioError != nil {
+			Log.LogFull(senderName, LM.CategorySYSTEM, LM.LevelERROR, LM.SeverityCritical, LM.ImpactCritical, LM.MessageNameDATABASE, `Was not able to read the templates.`, ioError.Error())
+			return
+		} else {
+			zipData = data
+		}
+	}
+
+	// Read the content from the ZIP file:
+	reader, readerError := zip.NewReader(bytes.NewReader(zipData), int64(len(zipData)))
+	if readerError != nil {
+		Log.LogFull(senderName, LM.CategorySYSTEM, LM.LevelERROR, LM.SeverityCritical, LM.ImpactCritical, LM.MessageNameREAD, `Was not able to read the ZIP file.`, readerError.Error())
+		return
+	}
+
+	templates = template.New(`root`)
+	for _, file := range reader.File {
+
+		fileReader, openError := file.Open()
+		if openError == nil {
+			contentData, readError := ioutil.ReadAll(fileReader)
+			fileReader.Close()
+
+			if readError != nil {
+				Log.LogFull(senderName, LM.CategorySYSTEM, LM.LevelERROR, LM.SeverityCritical, LM.ImpactCritical, LM.MessageNameREAD, `Was not able to read the content of the desired template.`, readError.Error(), file.FileInfo().Name())
+				continue
+			}
+
+			templateData := string(contentData)
+			templates.Parse(templateData)
+			Log.LogShort(senderName, LM.CategorySYSTEM, LM.LevelINFO, LM.MessageNameEXECUTE, fmt.Sprintf(`The template '%s' was parsed.`, file.FileInfo().Name()))
+		} else {
+			Log.LogFull(senderName, LM.CategorySYSTEM, LM.LevelERROR, LM.SeverityCritical, LM.ImpactCritical, LM.MessageNameDATABASE, `Was not able to open a template.`, file.FileInfo().Name())
+		}
+	}
+
+	isInit = true
+}

Templates/Process.go

@@ -0,0 +1,19 @@
+package Templates
+
+import "net/http"
+import "github.com/SommerEngineering/Ocean/MimeTypes"
+import "github.com/SommerEngineering/Ocean/Log"
+import LM "github.com/SommerEngineering/Ocean/Log/Meta"
+
+func ProcessHTML(templateName string, response http.ResponseWriter, data interface{}) {
+
+	if !isInit {
+		Log.LogFull(senderName, LM.CategorySYSTEM, LM.LevelERROR, LM.SeverityCritical, LM.ImpactCritical, LM.MessageNameINIT, `The template engine is not (yet) init.`)
+		return
+	}
+
+	MimeTypes.Write2HTTP(response, MimeTypes.TypeWebHTML)
+	if executeError := templates.ExecuteTemplate(response, templateName, data); executeError != nil {
+		Log.LogFull(senderName, LM.CategoryAPP, LM.LevelERROR, LM.SeverityCritical, LM.ImpactCritical, LM.MessageNameEXECUTE, `Was not able to execute the template.`, templateName, executeError.Error())
+	}
+}

Templates/Variables.go

@@ -0,0 +1,11 @@
+package Templates
+
+import "html/template"
+import LM "github.com/SommerEngineering/Ocean/Log/Meta"
+
+var (
+	templates  *template.Template = nil
+	senderName LM.Sender          = `System::Templates`
+	zipData    []byte             = nil
+	isInit     bool               = false
+)