how to convert the aws::iostream to char array or other std type

[GitZinger]

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• I've gone though Developer Guide and API reference
• I've searched for previous similar issues and didn't find any solution

Platform/OS/Hardware/Device
What are you running the sdk on?
win 10
Describe the question
after calling

auto& retrieved_file = get_object_outcome.GetResultWithOwnership().
           GetBody();

I realize this retrieved_file is aws::iostream type, and I would like to convert it into a std type so that I can use the raw data to construct a opencv Mat variable?
so uint8_t, char and whatever a regular std type would be good!

by calling
get()
or read()
like
retrieved_file.get

or something?

also, how to get the size of this retrieved_file ?

I mean I checked the documentation
https://sdk.amazonaws.com/cpp/api/LATEST/namespace_aws.html#a7fceacd06044b767f90ef1ae53f498d8

It is not that kind helpful.
I don't know what kind of member method or function associated with the iostream class at all. could you put its member function in the reference.

thank you so much!

Logs/output
If applicable, add logs or error output.

To enable logging, set the following system properties:

REMEMBER TO SANITIZE YOUR PERSONAL INFO

options.loggingOptions.logLevel = Aws::Utils::Logging::LogLevel::Trace;
Aws::InitAPI(options)

[KaibaLopez]

@GitZinger , you can treat Aws::IOStream as an std::IOStream, meaning you can do something like:

std::stringstream ss;
ss << retrieved_file.rdbuf();
const char * text = ss.str().c_str();

As for the size of the retrieved file you can simply call :
get_object_outcome.GetResult().GetContentLength();

Hope this helps.

[github-actions]

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