1 files changed, 68 insertions, 0 deletions
diff --git a/archaeological_operations/utils.py b/archaeological_operations/utils.py
new file mode 100644
index 000000000..c48ec93e8
--- /dev/null
+++ b/archaeological_operations/utils.py
@@ -0,0 +1,68 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# Copyright (C) 2013  Étienne Loks  <etienne.loks_AT_peacefrogsDOTnet>
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# See the file COPYING for details.
+
+import re
+
+PARCEL_YEAR_REGEXP = re.compile(r"^([0-9]{4})[ :]+")
+PARCEL_SECTION_REGEXP = re.compile(ur"(?: )*(?:[Ss]ection(?:s)?)?(?: )*([A-Z][A-Z0-9]{0,3})[ :]*((?:(?: |;|,|[Pp]arcelle(?:s)?|n°|et|à|to)*[0-9]+[p]?)+)")
+PARCEL_NB_RANGE_REGEXP = re.compile(ur'([0-9]+[p]?) (?:à|to) ([0-9]+[p]?)')
+PARCEL_NB_REGEXP = re.compile(ur'(?: |;|,|[Pp]arcelle(?:s)?|n°|et|à|to)*([0-9]+[p]?)')
+
+def parse_parcels(parcel_str, insee_code=None, owner=None):
+    parcels, town = [], None
+    if insee_code:
+        town = parse_insee(insee_code)
+        # manage only one town at a time
+        assert len(town) < 2
+        if not town:
+            return parcels
+        town = town[0]
+    m = PARCEL_YEAR_REGEXP.match(parcel_str)
+    year = None
+    if m:
+        year = m.groups()[0]
+        parcel_str = parcel_str[m.span()[1]:]
+    for parcel in PARCEL_SECTION_REGEXP.findall(parcel_str):
+        sector, nums = parcel[0], parcel[1]
+        for num in PARCEL_NB_REGEXP.findall(nums):
+            if len(unicode(num)) > 6:
+                continue
+            dct = {'year':year, 'section':sector, 'parcel_number':num}
+            if town:
+                dct['town'] = town
+            if owner:
+                dct['history_modifier'] = owner
+            parcels.append(dct)
+        for parcel_ranges in PARCEL_NB_RANGE_REGEXP.findall(nums):
+            lower_range, higher_range = parcel_ranges
+            try:
+                # the lower range itself has been already kept
+                lower_range = int(lower_range) + 1
+                higher_range = int(higher_range)
+            except ValueError:
+                continue
+            for num in xrange(lower_range, higher_range):
+                dct = {'year':year, 'section':sector,
+                       'parcel_number':unicode(num)}
+                if town:
+                    dct['town'] = town
+                if owner:
+                    dct['history_modifier'] = owner
+                parcels.append(dct)
+    return parcels