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Generate null transactions for empty periods

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For example, if one uses -M to generate a monthly report for an entire
year, and there are no transaction in the month of February, ordinarily
Ledger would report nothing for that month, even if -E were used.  Now
"null transactions" are generated for periods without any activity, in
order to make certain reports -- such as running monthly averages --
more accurate.

For example, instead of -MA being just a monthly running average of
months with activity, it is now a true average among all months during
the reported period.
This commit is contained in:
John Wiegley 2009-02-14 05:55:09 -04:00
parent ee5e0600aa
commit 50f434a5e3
1 changed files with 16 additions and 0 deletions
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16
src/filters.cc
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@ -488,7 +488,23 @@ void interval_xacts::operator()(xact_t& xact)
while (date >= (temp = interval.increment(quant))) {
if (quant == temp)
break;
interval.begin = quant;
quant = temp;
// Generate a null transaction, so the intervening periods can be seen
// when -E is used, or if the calculated amount ends up being non-zero
account_t empty_account(NULL, "<Empty>");
entry_t null_entry;
null_entry.add_flags(ITEM_TEMP);
null_entry._date = quant;
xact_t null_xact(&empty_account);
null_xact.add_flags(ITEM_TEMP);
null_xact.amount = 0L;
null_entry.add_xact(&null_xact);
last_xact = &null_xact;
subtotal_xacts::operator()(null_xact);
report_subtotal(quant);
}
start = interval.begin = quant;
}