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Added the new transaction handler `truncate_entries' which can be used

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to trim a number of entries from the beginning or end of a transction
stream.  (push_to_transactions_list): Removed unneeded "handler"
argument.
This commit is contained in:
John Wiegley 2005-02-14 07:45:09 +00:00
parent 962e17c1a9
commit dc4c2b8d50
2 changed files with 68 additions and 3 deletions
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47
walk.cc
View file

@ -56,6 +56,53 @@ void add_transaction_to(const transaction_t& xact, value_t& value)
value = xact.amount;
}
void truncate_entries::flush()
{
if (! xacts.size())
return;
entry_t * last_entry = (*xacts.begin())->entry;
int l = 0;
for (transactions_list::iterator x = xacts.begin();
x != xacts.end();
x++)
if (last_entry != (*x)->entry) {
l++;
last_entry = (*x)->entry;
}
l++;
last_entry = (*xacts.begin())->entry;
int i = 0;
for (transactions_list::iterator x = xacts.begin();
x != xacts.end();
x++) {
if (last_entry != (*x)->entry) {
last_entry = (*x)->entry;
i++;
}
bool print = false;
if (tailwise) {
if (count > 0 && l - i <= count)
print = true;
else if (count < 0 && l - i > - count)
print = true;
} else {
if (count > 0 && i < count)
print = true;
else if (count < 0 && i >= - count)
print = true;
}
if (print)
item_handler<transaction_t>::operator()(**x);
}
item_handler<transaction_t>::flush();
}
void set_account_value::operator()(transaction_t& xact)
{
add_transaction_to(xact, account_xdata(*xact.account).value);

24
walk.h
View file

@ -145,6 +145,25 @@ class ignore_transactions : public item_handler<transaction_t>
virtual void operator()(transaction_t& xact) {}
};
class truncate_entries : public item_handler<transaction_t>
{
int count;
bool tailwise;
transactions_list xacts;
public:
truncate_entries(item_handler<transaction_t> * handler,
int _count, bool _tailwise = false)
: item_handler<transaction_t>(handler),
count(_count), tailwise(_tailwise) {}
virtual void flush();
virtual void operator()(transaction_t& xact) {
xacts.push_back(&xact);
}
};
class set_account_value : public item_handler<transaction_t>
{
public:
@ -159,9 +178,8 @@ class push_to_transactions_list : public item_handler<transaction_t>
public:
transactions_list& xact_list;
push_to_transactions_list(transactions_list& _xact_list,
item_handler<transaction_t> * handler = NULL)
: item_handler<transaction_t>(handler), xact_list(_xact_list) {}
push_to_transactions_list(transactions_list& _xact_list)
: xact_list(_xact_list) {}
virtual void operator()(transaction_t& xact) {
xact_list.push_back(&xact);