API that returns a newly allocated buffer as an output argument (not return value) are error-prone.
- Users forget to release the newly allocated buffer
- Or the call `delete` instead of `delete[]`
But some of those API need to call `realloc` on the buffer.
But `realloc` is only valid if the buffer was previously allocated with `malloc`.
If a buffer needs to be re-allocated using a C++ API, then `std::vector<char*>` should be used instead...
So, this patch does:
- Migrates the API from `new []` / `delete[]` to `malloc()` / `free()`
- Fixes all the memory issues: incorrect deallocs and memory leaks
- Updates the documentation
- And fixes misc issues with the API: removes `cc` from the ZipUtils class.
This patch includes:
* Continue replacing `const char*` with `const std::string&` where it makes sense.
* It also removes some Hungarian notation from the code.
* It fixes some indentation issues in part of the code
* It replaces `int` or `unsigned int` with `long` where it makes sense.
Ricardo Quesada