C是否有像python pickle这样的对象序列化对象？

Question

I'm wondering if C has anything similar to the python pickle module that can dump some structured data on disk and then load it back later.

I know that I can write my structure byte by byte to a file on disk and then read it back later, but with this approach there's still quite some work to do. For example, if I have a single link list structure, I can traverse the list from head to tail and write each node's data on disk. When I read the list back from the on-disk file, I have to reconstruct all links between each pair of nodes.

Please advise if there's an easier way.

Thanks heaps!

Answer 1

An emphatic NO on that one, I'm afraid. C has basic file I/O. Any structuring of data is up to you. Make up a format, dump it out, read it in.

There may be libraries which can do this, but by itself no C doesn't do this.

Answer 2

The C library functions fread(3) and fwrite(3) will read and write 'elements of data', but that's pretty fanciful way of saying "the C library will do some multiplication and pread(2) or pwrite(2) calls behind the scenes to fill your array".

You can use them on struct s, but it is probably not a good idea:

• holes in the structs get written and read
• you're baking in the endianness of your integers

While you can make your own format for writing objects, you might want to see if your application could use SQLite3 for on-disk storage of objects. It's well-debugged, and if your application fits its abilities well, it might be just the ticket. (And a lot easier than writing all your own formatting code.)

Answer 3

Boost具有序列化库 ，如果用“ C”表示“ C或C ++”。