Merge pull request #314 from iqb-berlin/bugfix/MS-Excel_CSV_Zeichenkodierung

Prepend UTF-8 BOM to csv raw data #162

src/app/workspace-admin/results/results.component.ts

@@ -82,6 +82,7 @@ export class ResultsComponent implements OnInit {
       (responseData: UnitResponse[]) => {
         this.mds.setSpinnerOff();
         if (responseData.length > 0) {
+          const bom = '\ufeff';
           const columnDelimiter = ';';
           const lineDelimiter = '\n';
           let myCsvData = 'groupname' + columnDelimiter
@@ -123,7 +124,7 @@ export class ResultsComponent implements OnInit {
               myCsvData += lineDelimiter;
             }
           });
-          const blob = new Blob([myCsvData], {type: 'text/csv;charset=utf-8'});
+          const blob = new Blob([bom + myCsvData], {type: 'text/csv;charset=utf-8'});
           saveAs(blob, 'iqb-testcenter-responses.csv');
         } else {
           this.snackBar.open('Keine Daten verfügbar.', 'Fehler', {duration: 3000});
@@ -157,6 +158,7 @@ export class ResultsComponent implements OnInit {
             });
           });
 
+          const bom = '\ufeff';
           const columnDelimiter = ';';
           const lineDelimiter = '\n';
           let myCsvData = 'groupname' + columnDelimiter + 'loginname' + columnDelimiter + 'code' + columnDelimiter +
@@ -184,7 +186,7 @@ export class ResultsComponent implements OnInit {
               myCsvData += '"' + resp.reviewtime + '"' + columnDelimiter  + '"' +  resp.entry  + '"' + lineDelimiter;
             }
           });
-          const blob = new Blob([myCsvData], {type: 'text/csv;charset=utf-8'});
+          const blob = new Blob([bom + myCsvData], {type: 'text/csv;charset=utf-8'});
           saveAs(blob, 'iqb-testcenter-reviews.csv');
         } else {
           this.snackBar.open('Keine Daten verfügbar.', 'Fehler', {duration: 3000});
@@ -205,6 +207,7 @@ export class ResultsComponent implements OnInit {
       (responseData: LogData[]) => {
         this.mds.setSpinnerOff();
         if (responseData.length > 0) {
+          const bom = '\ufeff';
           const columnDelimiter = ';';
           const lineDelimiter = '\n';
           let myCsvData = 'groupname' + columnDelimiter + 'loginname' + columnDelimiter + 'code' + columnDelimiter +
@@ -217,7 +220,7 @@ export class ResultsComponent implements OnInit {
               resp.timestamp.toString() + '"' + columnDelimiter  + resp.logentry.replace(/\\"/g, '""')  + lineDelimiter;
             }
           });
-          const blob = new Blob([myCsvData], {type: 'text/csv;charset=utf-8'});
+          const blob = new Blob([bom + myCsvData], {type: 'text/csv;charset=utf-8'});
           saveAs(blob, 'iqb-testcenter-logs.csv');
         } else {
           this.snackBar.open('Keine Daten verfügbar.', 'Fehler', {duration: 3000});