Add EndOfFileInQuotedFieldException instead of InvalidCsvQuotationException("Unexpected end of line during parsing a quoted value")

Note the original message "Unexpected end of line during parsing a quoted value"
looks to be wrong because it is thrown when a next line is not found in a quoted
field, not when an end of line is observed.

Author: Dai MIKURUBE

embulk-parser-csv/src/main/java/org/embulk/parser/csv/CsvTokenizer.java

@@ -402,7 +402,7 @@ public String nextColumn() {
                         quotedValue.append(this.newline);
                         this.quotedValueLines.add(this.line);
                         if (!this.nextLine(false)) {
-                            throw new InvalidCsvQuotationException("Unexpected end of line during parsing a quoted value");
+                            throw new EndOfFileInQuotedFieldException();
                         }
                         valueStartPos = 0;
 
@@ -438,7 +438,7 @@ public String nextColumn() {
                             quotedValue.append(this.line.substring(valueStartPos, this.linePos));
                             this.quotedValueLines.add(this.line);
                             if (!this.nextLine(false)) {
-                                throw new InvalidCsvQuotationException("Unexpected end of line during parsing a quoted value");
+                                throw new EndOfFileInQuotedFieldException();
                             }
                             valueStartPos = 0;
                         } else if (this.isQuote(next) || this.isEscape(next)) { // escaped quote

embulk-parser-csv/src/main/java/org/embulk/parser/csv/EndOfFileInQuotedFieldException.java

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2022 The Embulk project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.embulk.parser.csv;
+
+public class EndOfFileInQuotedFieldException extends InvalidCsvQuotationException {
+    public EndOfFileInQuotedFieldException() {
+        super("Unexpected end of file in a quoted field.");
+    }
+}