How to initialise a stringstream from a vector char

Question

currently I am using a boost char array

boost::array<char, 512> received_data;
std::istringstream ss_(received_data.data());

but what if my received_data was a std::vector<char> received_data(512);

how would I then get this data to my std::istringstream ss_?

There is no easy (and *correct*) way to do this properly. To do it right you either have to use boost or implement your own `streambuf` (which isn't *too* hard). — Timmmm, Aug 07 '19 at 16:11
Possible duplicate of [C++: Wrapping vector with istream](https://stackoverflow.com/questions/8815164/c-wrapping-vectorchar-with-istream) — Timmmm, Aug 07 '19 at 16:11

score 6 · Accepted Answer · edited Dec 09 '20 at 05:57

6

The istringstream takes a string, and a string can be made from two char iterators, like this:

istringstream iss(string(v.begin(), v.end()));

edited Dec 09 '20 at 05:57

benathon

answered May 25 '13 at 14:43

score 2 · Answer 2 · answered May 25 '13 at 14:41

2

std::vector<char> receivedData(512);

std::istringstream iss(&receivedData[0]);

answered May 25 '13 at 14:41

Barış Uşaklı

5

Good if there's no 0s in the data and the last is a 0. – chris May 25 '13 at 14:45
@user494461, The iterator pair. – chris May 25 '13 at 14:55
If there is a `0` in the middle of the `std::vector` then the iterator version will only take the part up to the `0` too as far as I can tell, with that said the iterator version is preferred. – Barış Uşaklı May 25 '13 at 15:10

2 Answers2