make the number of digits to use in the body length configurable

jamesdbrock / hffix

Financial Information Exchange Protocol C++ Library

http://jamesdbrock.github.io/hffix

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make the number of digits to use in the body length configurable #13

Closed arvidn closed 5 years ago

arvidn commented 6 years ago

and throw an exception if the length field overflows

jamesdbrock commented 5 years ago

Closing, mostly because this PR is incomplete without a lot of extra changes to the Doxygen to explain the situation to users. May reopen if someone ever wants to write a message larger than a million bytes.