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* add searching for message size ranges

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This commit is contained in:
Dirk-Jan C. Binnema
2011-01-06 16:21:09 +02:00
parent f8af665151
commit c5b3059442
4 changed files with 122 additions and 4 deletions
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70
src/mu-query.cc
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@ -130,12 +130,65 @@ private:
};
class MuSizeRangeProcessor : public Xapian::NumberValueRangeProcessor {
public:
MuSizeRangeProcessor(Xapian::valueno v)
: Xapian::NumberValueRangeProcessor(v) {
}
Xapian::valueno operator()(std::string &begin, std::string &end) {
if (!clear_prefix (begin))
return Xapian::BAD_VALUENO;
if (!substitute_size (begin) || !substitute_size (end))
return Xapian::BAD_VALUENO;
begin = Xapian::sortable_serialise(atol(begin.c_str()));
end = Xapian::sortable_serialise(atol(end.c_str()));
return (Xapian::valueno)MU_MSG_FIELD_ID_SIZE;
}
private:
bool clear_prefix (std::string& begin) {
const std::string colon (":");
const std::string name (mu_msg_field_name
(MU_MSG_FIELD_ID_SIZE) + colon);
const std::string shortcut (
std::string(1, mu_msg_field_shortcut
(MU_MSG_FIELD_ID_SIZE)) + colon);
if (begin.find (name) == 0) {
begin.erase (0, name.length());
return true;
} else if (begin.find (shortcut) == 0) {
begin.erase (0, shortcut.length());
return true;
} else
return false;
}
bool substitute_size (std::string& size) {
gchar str[16];
guint64 num = mu_str_size_parse_kmg (size.c_str());
if (num == G_MAXUINT64)
return false;
snprintf (str, sizeof(str), "%" G_GUINT64_FORMAT, num);
size = str;
return true;
}
};
static void add_prefix (MuMsgFieldId field, Xapian::QueryParser* qparser);
struct _MuQuery {
Xapian::Database* _db;
Xapian::QueryParser* _qparser;
Xapian::ValueRangeProcessor* _range_processor;
Xapian::ValueRangeProcessor* _date_range_processor;
Xapian::ValueRangeProcessor* _size_range_processor;
};
gboolean
@ -151,9 +204,16 @@ init_mu_query (MuQuery *mqx, const char* dbpath)
mqx->_qparser->set_database (*mqx->_db);
mqx->_qparser->set_default_op (Xapian::Query::OP_AND);
mqx->_range_processor = new MuDateRangeProcessor ();
/* check for dates */
mqx->_date_range_processor = new MuDateRangeProcessor ();
mqx->_qparser->add_valuerangeprocessor
(mqx->_range_processor);
(mqx->_date_range_processor);
/* check for sizes */
mqx->_size_range_processor = new MuSizeRangeProcessor
(MU_MSG_FIELD_ID_SIZE);
mqx->_qparser->add_valuerangeprocessor
(mqx->_size_range_processor);
mu_msg_field_foreach ((MuMsgFieldForEachFunc)add_prefix,
(gpointer)mqx->_qparser);
@ -178,7 +238,9 @@ uninit_mu_query (MuQuery *mqx)
try {
delete mqx->_db;
delete mqx->_qparser;
delete mqx->_range_processor;
delete mqx->_date_range_processor;
delete mqx->_size_range_processor;
} MU_XAPIAN_CATCH_BLOCK;
}