fix: array column parsing , JSON.parse do not handle correctly special characters ex: \ f (formfeed)

Author: Laszlo Radics

lib/pgConverters.js

@@ -10,7 +10,7 @@ export let arraySplit = (str) => {
     do {
         parsingResult = e.exec(str);
         let valStr = (parsingResult[2] == 'NULL') ? null :
-            (parsingResult[1] == null ? parsingResult[2] : JSON.parse(parsingResult[1])); // for string parsing, escape \
+            (parsingResult[1] == null ? parsingResult[2] : unescapeString(parsingResult[1])); // for string parsing, escape \
         valList.push(valStr);
     } while (e.lastIndex < str.length);
     return valList;
@@ -30,3 +30,9 @@ export let arraySplitToJson = (str) => {
     let vals = arraySplit(str);
     return vals.map(s=> typeof s === 'string' ? JSON.parse(s) : s);
 };
+
+function unescapeString(s) {
+    return s.slice(1, s.length - 1)    // cut the first and the last "
+        .replace(/\\"/g, '"')          // \" -> "
+        .replace(/\\\\/g, '\\')        // \\ -> \
+}

lib/pgConverters.js.map

@@ -764,7 +764,7 @@ describe("pgdb", () => {
     }));
 
     it("Testing text array parsing", w(async () => {
-        let list = ["'A'", '"A"', 'normal', '//', '\\', '""', "''", '--', '/*', '', '<!--', JSON.stringify({
+        let list = ["'A'", '"A"', 'normal', '//', '\\','\\\\\\"','\\\\"','\\"', '""', "''", '--', '/*', '', '<!--', JSON.stringify({
             a: 1,
             b: "aprocska\"kalapocska'bennecsacskamacskamocska"
         })];