about that restructuring, and .scm files

Christopher Lam christopher.lck at gmail.com
Wed Aug 9 09:48:57 EDT 2017

Hi John

Thank you I'll do this when I return to broadband; being away from home and
using LTE means productivity high but bandwidth low.

gnctimeperiod-utilities.scm is from Doug Doughty and is a huge list of
various parameters for date selection for his reports. I wouldn't have a
clue how to code in C++.

I'll create PR in 10 days' time and hopefully someone will test a build.


On 9 August 2017 at 01:21, John Ralls <jralls at ceridwen.us> wrote:

> > On Aug 8, 2017, at 6:02 PM, Christopher Lam <christopher.lck at gmail.com>
> wrote:
> >
> > Regarding adding new reports
> >
> > Apologies if this is the worst time to ask, but I believe I have fixed
> some
> > scheme reports which can be plugged in the following folders. I've tested
> > in Windows and Ubuntu and they seem to work well. It'll belong in Report
> >
> > Collected Reports, and would make a nice addition to 2.8 release.
> >
> > - scm/gnucash/* will hold gnctimeperiod-utilities.scm and
> > report-other-menu.scm
> > - scm/gnucash/report/standard-reports/* will hold new reports
> >
> > Unfortunately I cannot identify the proper source for the scm/gnucash/*
> > folder - it seems to accumulate files from src/engine, src/scm... I guess
> > src/scm is the right one? I don't know how to build from source to test.
> Chris,
> No, it's a good time to ask.
> scm/gnucash collects all of the guile binding code from the various
> modules. I don't know what "timeperiod-utilities" is supposed to be, but it
> sounds like it should be an extension of src/engine/gnc-date.cpp. We want
> to use the same date code throughout GnuCash so whatever you need in
> timeperiod-utilities should be written in C++ and should wrap
> boost::date_time to hide the implementation (so that we can easily switch
> to another implementation if e.g. the C++ committee adds something to the
> standard library or we decide that ICU provides a better fit) and then
> provide Guile bindings via SWIG to support your report changes.
> It would be a good idea to get a PR up so that we can give you more
> detailed guidance.
> Regards,
> John Ralls
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