# This is a date_filter plug-in.
# START and END are the beginning and end of the month specified by date.
month = {
   label = "Month"
   usage = "mmm/yyyy"
   regular_expression = "^([A-Za-z]+)[^-,0-9A-Za-z]?([0-9][0-9]|[0-9][0-9][0-9][0-9])$"
   start = `

# Remember what unit we're using
remember_date_unit('month');

string year = $2;
string month = $1;
year = convert_year(year);
month = convert_month(month);

# Remember the decomposition
set_decomposition_month(month);
set_decomposition_year(year);

'01/' . month . '/' . year . ' 00:00:00'
`

   end = `

# Remember what unit we're using
remember_date_unit('month');

string year = $2;
string month = $1;
year = convert_year(year);
month = convert_month(month);

string start = '01/' . month . '/' . year . ' 00:00:00';
int start_epoc = date_time_to_epoc(start);
int start_epoc_plus_month = start_epoc + 31 * 24 * 3600;
string second_in_next_month = epoc_to_date_time(start_epoc_plus_month);
string beginning_of_next_month = '01/' . substr(second_in_next_month,3);
int beginning_of_next_month_epoc = date_time_to_epoc(beginning_of_next_month);
int end_of_this_month_epoc = beginning_of_next_month_epoc -1;
epoc_to_date_time(end_of_this_month_epoc);
`

}