--

-- PostgreSQL database dump

--

SET statement_timeout = 0;

SET client_encoding = 'UTF8';

SET client_min_messages = warning;

--

CREATE SCHEMA py_functions;

-- Name: SCHEMA py_functions; Type: COMMENT; Schema: -; Owner: bien

--

COMMENT ON SCHEMA py_functions IS 'IMPORTANT: Functions must always return NULL in place of '''' (the empty string). This ensures that empty strings do not find their way into VegBIEN.';

--

CREATE FUNCTION _date(date timestamp with time zone) RETURNS timestamp with time zone

    LANGUAGE sql IMMUTABLE STRICT

    AS $_$

SELECT $1

$_$;

ALTER FUNCTION py_functions._date(date timestamp with time zone) OWNER TO bien;

--

global date, year, month, day

import datetime

if year == None:

    if month == None and day == None: return None # entire date is empty

    else: raise AssertionError(

        'null value in column "year" violates not-null constraint')

if month != None and not month.isdigit(): # month is name

    month = str(datetime.datetime.strptime(month, '%b').month)

if day == None: day = 1

year, month, day = map(int, (year, month, day))

    try:

        date = datetime.date(year, month, day)

        break

    except ValueError as e:

        if try_num > 0: raise # exception still raised after retry

        msg = e_msg(e)

        if msg == 'month must be in 1..12': # try swapping month and day

            month, day = day, month

        else: raise

--

CREATE FUNCTION "_dateRangeEnd"(value text) RETURNS text

SELECT (py_functions.parse_date_range($1))[2]

$_$;

--

CREATE FUNCTION "_dateRangeEnd"(value timestamp with time zone) RETURNS timestamp with time zone

    LANGUAGE sql IMMUTABLE STRICT

    AS $_$

SELECT $1

$_$;

ALTER FUNCTION py_functions."_dateRangeEnd"(value timestamp with time zone) OWNER TO bien;

--

--

CREATE FUNCTION "_dateRangeStart"(value text) RETURNS text

SELECT (py_functions.parse_date_range($1))[1]

$_$;

--

CREATE FUNCTION "_dateRangeStart"(value timestamp with time zone) RETURNS timestamp with time zone

    LANGUAGE sql IMMUTABLE STRICT

    AS $_$

SELECT $1

$_$;

ALTER FUNCTION py_functions."_dateRangeStart"(value timestamp with time zone) OWNER TO bien;

--

--

CREATE FUNCTION "_namePart"(first text DEFAULT NULL::text, middle text DEFAULT NULL::text, last text DEFAULT NULL::text) RETURNS text

    for none_val in none_vals:

        if val == none_val: return None

    return val

    ('last', slice(-1, None)),

]

name_parts_slices = dict(_name_parts_slices_items)

name_parts = [name for name, slice_ in _name_parts_slices_items]

def _name(items):

    items = dict(items)

    parts = []

    for part in name_parts:

        if part in items: parts.append(items[part])

out_items = []

    try: slice_ = name_parts_slices[part]

    except KeyError: pass # a non-value column

    else: out_items.append((part, ' '.join(value.split(' ')[slice_])))

--

CREATE FUNCTION parse_date_range(str_ text) RETURNS text[]

import re

def single_space(str_): return re.sub(r' {2,}', r' ', str_.strip())

def could_be_year(str_): return str_.isdigit() and len(str_) == 4

def could_be_day(str_): return str_.isdigit() and len(str_) <= 2

range_sep='-'

part_sep=' '

if str_.find(part_sep) < 0: return default

start, sep, end = str_.partition(range_sep)

if sep == '': return default # not a range

start, end = (single_space(d).split(part_sep) for d in (start, end))

# Has form M D1-D2 or M D1-D2 Y (not M1 Y1-M2 Y2 or M1 D1-M2 D2)

if len(start) == 2 and (len(end) == 1 or (

        len(end) == 2 and could_be_day(start[-1]) and could_be_day(end[0])

        and could_be_year(end[-1])

    )):

    end.insert(0, start[0]) # make end fully specified

ct_diff = len(end) - len(start)

# Has form D1-D2 M Y, M1 D1-M2 D2 Y, M1-M2 Y, etc.

if ct_diff > 0: start += end[-ct_diff:] # make start fully specified

# Other forms are invalid and will be left as-is

return [part_sep.join(d) for d in (start, end)]

$$;

--