#1178 Advanced paste fix (parse grid + quoted cells)

plugins/org.jkiss.dbeaver.core/src/org/jkiss/dbeaver/ui/controls/resultset/spreadsheet/SpreadsheetPresentation.java

@@ -486,10 +486,10 @@ public class SpreadsheetPresentation extends AbstractPresentation implements IRe
                     return;
                 }
                 try (DBCSession session = DBUtils.openUtilSession(VoidProgressMonitor.INSTANCE, dataSource, "Advanced paste")) {
-                    for (String line : strValue.split("\n")) {
+                    for (String[] line : parseGridLines(strValue)) {
                         int colNum = focusPos.col;
                         Object rowElement = spreadsheet.getRowElement(rowNum);
-                        for (String value : line.split("\t")) {
+                        for (String value : line) {
                             if (colNum >= spreadsheet.getColumnCount()) {
                                 break;
                             }
@@ -545,6 +545,80 @@ public class SpreadsheetPresentation extends AbstractPresentation implements IRe
         }
     }
 
+    private String[][] parseGridLines(String strValue) {
+        final char columnDelimiter = '\t';
+        final char rowDelimiter = '\n';
+        final char trashDelimiter = '\r';
+        final char quote = '"';
+
+        final List<String[]> lines = new ArrayList<>();
+
+        final StringBuilder cellValue = new StringBuilder();
+        final List<String> curLine = new ArrayList<>();
+        boolean inQuote = false;
+        int length = strValue.length();
+        for (int i = 0; i < length; i++) {
+            char c = strValue.charAt(i);
+            if (inQuote && c != quote) {
+                cellValue.append(c);
+            } else {
+                switch (c) {
+                    case columnDelimiter:
+                        curLine.add(cellValue.toString());
+                        cellValue.setLength(0);
+                        break;
+                    case rowDelimiter:
+                        curLine.add(cellValue.toString());
+                        lines.add(curLine.toArray(new String[curLine.size()]));
+                        curLine.clear();
+                        cellValue.setLength(0);
+                        break;
+                    case trashDelimiter:
+                        // Ignore
+                        continue;
+                    case quote:
+                        if (inQuote) {
+                            if (i == length - 1 ||
+                                strValue.charAt(i + 1) == columnDelimiter ||
+                                strValue.charAt(i + 1) == trashDelimiter ||
+                                strValue.charAt(i + 1) == rowDelimiter)
+                            {
+                                inQuote = false;
+                                continue;
+                            }
+                        } else if (cellValue.length() == 0) {
+                            // Search for end quote
+                            for (int k = i + 1; k < length; k++) {
+                                if (strValue.charAt(k) == quote &&
+                                    (k == length - 1 ||
+                                    strValue.charAt(k + 1) == columnDelimiter ||
+                                    strValue.charAt(k + 1) == trashDelimiter ||
+                                    strValue.charAt(k + 1) == rowDelimiter))
+                                {
+                                    inQuote = true;
+                                    break;
+                                }
+                            }
+                            if (inQuote) {
+                                continue;
+                            }
+                        }
+                    default:
+                        cellValue.append(c);
+                        break;
+                }
+            }
+        }
+        if (cellValue.length() > 0) {
+            curLine.add(cellValue.toString());
+        }
+        if (!curLine.isEmpty()) {
+            lines.add(curLine.toArray(new String[curLine.size()]));
+        }
+
+        return lines.toArray(new String[lines.size()][]);
+    }
+
     @Override
     public Control getControl() {
         return spreadsheet;