void SG_EXPORT _sgJSONFreeValue(SGJSONValue* value)
{
if(!value)
return;
SGJSONSetItem* titem;
switch(value->type)
{
case SG_JSON_TYPE_NULL:
case SG_JSON_TYPE_BOOLEAN:
case SG_JSON_TYPE_NUMBER:
break; // nothing to do!
case SG_JSON_TYPE_STRING:
case SG_JSON_TYPE_COMMENT:
free(value->v.string);
break;
case SG_JSON_TYPE_ARRAY:
while(value->v.array->head)
_sgJSONFreeValue(sgListPopFirst(value->v.array));
sgListDestroy(value->v.array);
break;
case SG_JSON_TYPE_OBJECT:
while(value->v.object->root)
{
titem = sgSetPopRoot(value->v.object);
free(titem->key);
_sgJSONFreeValue(titem->val);
free(titem);
}
sgSetDestroy(value->v.object);
break;
}
free(value->strbuf);
free(value);
}
int main(void)
{
char buf[1024];
char* ptr;
SGSet* set = sgSetCreate(_setCmp, NULL);
printf("Example of SIEGE sets");
printf("----------------------------------------\n");
int option;
do
{
printf("Select a set operation:\n");
printf("+<elem> -- Add a new element\n");
printf("-<elem> -- Delete an element\n");
printf("?<elem> -- Query whether an element is present\n");
printf("p -- Print all elements in (strcmp) order\n");
printf("pp -- Pretty-print the set's search tree\n");
printf("s -- Print the set's tree in a compact s-expression form\n"); // yes, I was bored.
printf("ss -- Pretty print the set's tree in a compact s-expression form\n"); // ...very bored.
printf("\n");
printf("q -- Quit the program\n");
printf("----------------------------------------\n");
printf("Selection: "); fflush(stdout);
fgets(buf, sizeof(buf), stdin);
printf("\n");
trimNL(buf);
if(strstr(buf, "+") == buf)
option = '+';
else if(strstr(buf, "-") == buf)
option = '-';
else if(strstr(buf, "?") == buf)
option = '?';
else if(!strcmp(buf, "p") || !strcmp(buf, "P"))
option = 'p';
else if(!strcmp(buf, "pp") || !strcmp(buf, "pP") || !strcmp(buf, "Pp") || !strcmp(buf, "PP"))
option = 'P';
else if(!strcmp(buf, "s") || !strcmp(buf, "S"))
option = 's';
else if(!strcmp(buf, "ss") || !strcmp(buf, "sS") || !strcmp(buf, "Ss") || !strcmp(buf, "SS"))
option = 'S';
else if(!strcmp(buf, "q") || !strcmp(buf, "Q"))
option = 'q';
else
option = 0;
ptr = skipSpace(buf + 1);
switch(option)
{
case '+':
if(!strlen(ptr))
{
printf("Error -- element must be a non-empty string!\n");
break;
}
switch(insertItem(set, ptr))
{
case 0: printf("Element '%s' already exists in the set!\n", ptr); break;
case 1: printf("Element '%s' successfully added!\n", ptr); break;
default: printf("Error adding element '%s' -- probably out of memory!\n", ptr);
}
break;
case '-':
if(!strlen(ptr))
{
printf("Error -- element must be a non-empty string!\n");
break;
}
switch(removeItem(set, ptr))
{
case 0: printf("There is no element '%s' in the set!\n", ptr); break;
case 1: printf("Element '%s' successfully removed!\n", ptr); break;
default: printf("Error removing element '%s'!\n", ptr);
}
break;
case '?':
if(!strlen(ptr))
{
printf("Error -- element must be a non-empty string!\n");
break;
}
if(sgSetSearch(set, ptr))
printf("Element '%s' is present in the set!\n", ptr);
else
printf("Element '%s' is *NOT* present in the set!\n", ptr);
break;
case 'p':
printSet(set);
break;
case 'P':
pprintSet(set);
break;
case 's':
sprintSet(set, 0);
break;
case 'S':
sprintSet(set, 1);
break;
case 'q':
break; /* handled by the while() */
default:
printf("Invalid option '%s'!\n", trimSpace(buf));
break;
}
printf("\n");
fflush(stdout);
}
while(option != 'q');
while(set->root)
removeItem(set, set->root->item);
sgSetDestroy(set);
return 0;
}