Initial 2024-01-26

cmpSnipper/cmpSnipperUtil.go

@@ -0,0 +1,87 @@
+
+	package cmpSnipper
+
+	import (
+		"os"
+		"errors"
+		"strings"
+
+		"reflect"
+	)
+
+	func (app *App) FileReadLimit(file string, mSize int64) ([]byte, error) {
+		info, err := os.Stat(file)
+
+		if err != nil {
+			return nil, err
+		}
+
+		if info.IsDir() {
+			return nil, app.ErrIsDir
+		}
+
+		fSize := info.Size()
+
+		if fSize > mSize {
+			return nil, errors.New("File is big")
+		}
+
+		fd, err := os.Open(file)
+
+		if err != nil {
+			return nil, err
+		}
+
+		defer fd.Close()
+
+		var rata = make([]byte, fSize);
+
+		rSize, err := fd.Read(rata);
+
+		if fSize != int64(rSize) {
+			return nil, errors.New("Can't read full file size")
+		}
+
+		return rata, nil
+	}
+
+	func (app *App) UpperFirst(si string) string {
+		bi := []byte(si)
+		ss := strings.Title(string(bi[0]))
+		bo := bi
+		bo[0] = ss[0]
+
+		return string(bo)
+	}
+
+	func (app *App) CallFuncByName(funcName string, ifcIL ...interface{}) ([]interface{}, error) {
+		refCls := reflect.ValueOf(app)
+		refMth := refCls.MethodByName(funcName)
+
+		if !refMth.IsValid() {
+			app.Log("Call method \"%s\" not found", funcName)
+			return nil, errors.New("Call method not founnd")
+		}
+
+		app.Log("Call method \"%s\"", funcName)
+
+		refIL := make([]reflect.Value, len(ifcIL))
+
+		for i, ifcII := range ifcIL {
+			refIL[i] = reflect.ValueOf(ifcII)
+		}
+
+		// fmt.Println("reflect input list", refIL);
+
+		refOL := refMth.Call(refIL)
+
+		infOL := make([]interface{}, len(refOL))
+
+		for i, refOI := range refOL {
+			infOL[i] = refOI.Interface()
+		}
+
+		app.Log("Interface output list %+v", infOL)
+
+		return infOL, nil
+	}