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Re: End of String Problem: Sending C++ string to java code

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Jim Janney <jjanney@shell.xmission.com> writes:

> clusardi2k@aol.com writes:
>
>> Question: How should I send a string from C++ to java. 
>>
>> When I send a string (std::string) from the C++ code to the java code (String), I have to count (on the java side) the number of characters that I expect.
>>
>> If I don't take a specific number of characters I get more characters than I want on the java side. The extra characters are garbage.
>>
>> I tried appending the standard end of string ("\0") in C++ code and sending the string to java code, but the problem was not resolved.
>>
>> Any ideas,
>> Thanks,
>
> My C++ is very rusty at the moment, but I'm pretty sure that instances
> of std::string can contain nul characters internally.  Use the size or
> length methods to get the number of characters.

And if you're calling std::string::data, there's no guarantee that the
result will be terminated.  See

http://www.cplusplus.com/reference/string/string/data/

-- 
Jim Janney

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End of String Problem: Sending C++ string to java code clusardi2k@aol.com - 2013-10-08 09:56 -0700
  Re: End of String Problem: Sending C++ string to java code Arivald <NOSPAMarivald@interia.pl> - 2013-10-08 20:05 +0200
  Re: End of String Problem: Sending C++ string to java code Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2013-10-08 11:13 -0700
  Re: End of String Problem: Sending C++ string to java code Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-10-08 20:30 -0400
    Re: End of String Problem: Sending C++ string to java code Mark <i@dontgetlotsofspamanymore.invalid> - 2013-10-09 15:29 +0100
    Re: End of String Problem: Sending C++ string to java code "Chris Uppal" <chris.uppal@metagnostic.REMOVE-THIS.org> - 2013-10-09 15:35 +0100
  Re: End of String Problem: Sending C++ string to java code Jim Janney <jjanney@shell.xmission.com> - 2013-10-09 10:50 -0600
    Re: End of String Problem: Sending C++ string to java code Jim Janney <jjanney@shell.xmission.com> - 2013-10-09 11:03 -0600

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