Serious work on JString and some minor MString ajustments.

testing/compile

@@ -1,4 +1,4 @@
 #!/bin/bash
 #g++ -g -std=c++20 -o zstring_test zstring_test.cpp -I.. -L.. -lCoreUtils
-#g++ -g -std=c++20 -o mstring_test mstring_test.cpp -I.. -L.. -lCoreUtils
+g++ -g -std=c++20 -o mstring_test mstring_test.cpp -I.. -L.. -lCoreUtils
 g++ -o jstring_test jstring_test.cpp -I.. -L.. -lCoreUtils

testing/jstring_test.cpp

@@ -3,22 +3,30 @@
 
 int main(int argc, char **argv) {
 
-   coreutils::MString test0("{\"Number:\"0\",\"id\":\"XXXXX\"}");
+   coreutils::MString test0("{\"Number\":\"0\",\"id\":\"XXXXX\"}");
    coreutils::JString test1;
 
    test1 = test0;
+   std::cout << test1 << std::endl;
 
+   std::cout << test1["id"] << std::endl;
+   
    test1["name"] = "Cohen";
+
+   std::cout << test1 << std::endl;
+
    test1["health"] = "100";
    test1["comment"] = "this is a comment";
    test1["race"] = "human";
    test1["array"] = "[\"test1\",\"test2\",\"test3\"]";
    test1["tester"] = "test field";
    test1["object1"] = "{\"attr1\":\"value1\",\"attr2\":\"value2\",\"attr3\":\"value3\"}";
+   test1["object1.attr2"] = "{\"xattr1\":\"xvalue1\",\"xattr2\":\"xvalue2\",\"xattr3\":\"xvalue3\"}";
+   test1["object1.attr3"] = "Im not an object";
 
    std::cout << test1 << std::endl;
 
-   coreutils::MString test2 = test1["name"];
+   coreutils::ZString test2 = test1["name"];
    std::cout << test2 << std::endl;
    
    std::cout << test1["name"] << std::endl;
@@ -29,6 +37,11 @@ int main(int argc, char **argv) {
    std::cout << test1["tester"] << std::endl;
    std::cout << test1["object1"] << std::endl;
    std::cout << test1["object1.attr2"] << std::endl;   
+   std::cout << test1["object1.attr2.xattr3"] << std::endl;   
+   std::cout << test1["object1.attr3"] << std::endl;   
+   std::cout << test1["array[0]"] << std::endl;   
+   std::cout << test1["array[1]"] << std::endl;   
+   std::cout << test1["array[2]"] << std::endl;   
 
    return 0;
 }

testing/mstring_test.cpp

@@ -8,8 +8,11 @@ int main(int argc, char **argv) {
    std::cout << "char * operator=: [" << test1 << "]." << std::endl;
    test1 = "new value.";
    std::cout << "char * operator=: [" << test1 << "]." << std::endl;
+   std::cout << "001" << std::endl;
    std::string test11 = "this is a test";
+   std::cout << "002" << std::endl;
    coreutils::MString test12 = test11;
+   std::cout << "003" << std::endl;
    std::cout << "assign from std::string: [" << test12 << "]." << std::endl;   
 
    coreutils::MString test2("this is another test.");