Example code pointers (was: Re: Freecoins conduit (again))

Christian Stimming stimming at tuhh.de
Fri Dec 5 02:22:13 CST 2003

Will McDonald schrieb:
> In that case, is there someone who can help me (point me to existing code
> or provide sample function calls) fulfill the ambitious desires of "I
> have a transaction I'd like to commit now, please" and "Please to be showing
> me all the transactions that happened today" and "Good sir, may I
> inquire as to what accounts you currently possess"? :)
> Hell, I can even promise to document (for some value of "document")
> everything that I do so that future generations can learn from my
> failure.

Some example code about "how to commit a new transaction" can be found 
in each of the importer modules. You have to bear in mind that each 
importer module has two steps of importing one transaction: Firstly, a 
new transaction is created and filled with the data to be imported, and 
secondly if this transaction was confirmed to be a new transaction (as 
opposed to a detected duplicate of an existing transaction) then the 
transaction is actually committed into gnucash.

The second step is done with the common "generic importer", where the 
code in question is in src/import-export/import-backend.c in the 
function gnc_import_trans_clist() .

The first step is different in each importer module; for HBCI (and 
MT940), it is done in src/import-export/hbci/gnc-hbci-gettrans.c in 
function trans_list_cb() which is called from gnc_hbci_gettrans_final() 
on each list element by list_HBCI_Transaction_foreach. For OFX this is 
done in src/import-export/ofx/gnc-ofx-import.c in ofx_proc_transaction_cb().

The QIF importer is separated from the other modules, because the 
(older) code that is still in use was designed before the common generic 
importer was designed. Actually there are two QIF directories. However 
the newer one was never finished, so the older one is still in use and 
it doesn't use the generic importer code.

Maybe it helps if you include these pointers in some developer 
documentation. Did you run 'make doc' already? It uses doxygen to create 
a HTML API documentation although I forgot the destination directory. 
The main page of that documentation can also be edited in 


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