python-stdnum branch master updated. 1.7-19-gc576bc4

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https://arthurdejong.org/git/python-stdnum/commit/?id=c576bc44aef61686eab0d8b23363da6b879cef25

commit c576bc44aef61686eab0d8b23363da6b879cef25
Author: srikanthlogic <srik.lak@gmail.com>
Date:   Fri Dec 1 11:14:13 2017 +0530

    Add Indian Aadhaar
    
    Closes https://github.com/arthurdejong/python-stdnum/pull/56

diff --git a/stdnum/in_/__init__.py b/stdnum/in_/__init__.py
new file mode 100644
index 0000000..5226bd0
--- /dev/null
+++ b/stdnum/in_/__init__.py
@@ -0,0 +1,21 @@
+# __init__.py - collection of Indian numbers
+# coding: utf-8
+#
+# Copyright (C) 2017 Srikanth Lakshmanan
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301 USA
+
+"""Collection of Indian numbers."""
diff --git a/stdnum/in_/aadhaar.py b/stdnum/in_/aadhaar.py
new file mode 100644
index 0000000..eb57b95
--- /dev/null
+++ b/stdnum/in_/aadhaar.py
@@ -0,0 +1,98 @@
+# aadhaar.py - functions for handling Indian Aadhaar numbers
+#
+# Copyright (C) 2017 Srikanth L
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301 USA
+
+"""Aadhaar (Indian digital resident personal identity number)
+
+Aadhaar is a 12 digit unique identity number issued to all Indian residents.
+The number is assigned by the Unique Identification Authority of India
+(UIDAI).
+
+More information:
+
+* https://en.wikipedia.org/wiki/Aadhaar
+
+>>> validate('234123412346')
+'234123412346'
+>>> validate('234123412347')
+Traceback (most recent call last):
+    ...
+InvalidChecksum: ...
+>>> validate('123412341234')  # number should not start with 0 or 1
+Traceback (most recent call last):
+    ...
+InvalidFormat: ...
+>>> validate('643343121')
+Traceback (most recent call last):
+    ...
+InvalidLength: ...
+>>> format('234123412346')
+'2341 2341 2346'
+>>> mask('234123412346')
+'XXXX XXXX 2346'
+"""
+
+import re
+
+from stdnum import verhoeff
+from stdnum.exceptions import *
+from stdnum.util import clean
+
+
+aadhaar_re = re.compile(r'^[2-9][0-9]{11}$')
+"""Regular expression used to check syntax of Aadhaar numbers."""
+
+
+def compact(number):
+    """Convert the number to the minimal representation. This strips the
+    number of any valid separators and removes surrounding whitespace."""
+    return clean(number, ' -').strip()
+
+
+def validate(number):
+    """Check if the number provided is a valid Aadhaar number. This checks
+    the length, formatting and check digit."""
+    number = compact(number)
+    if len(number) != 12:
+        raise InvalidLength()
+    if not aadhaar_re.match(number):
+        raise InvalidFormat()
+    verhoeff.validate(number)
+    return number
+
+
+def is_valid(number):
+    """Check if the number provided is a valid Aadhaar number. This checks
+    the length, formatting and check digit."""
+    try:
+        return bool(validate(number))
+    except ValidationError:
+        return False
+
+
+def format(number):
+    """Reformat the number to the standard presentation format."""
+    number = compact(number)
+    return ' '.join((number[:4], number[4:8], number[8:]))
+
+
+def mask(number):
+    """Masks the first 8 digits as per MeitY guidelines for securing identity
+    information and Sensitive personal data."""
+    number = compact(number)
+    return 'XXXX XXXX ' + number[-4:]

-----------------------------------------------------------------------

Summary of changes:
 stdnum/{ch => in_}/__init__.py       |  6 +--
 stdnum/{br/cpf.py => in_/aadhaar.py} | 76 ++++++++++++++++++++----------------
 2 files changed, 46 insertions(+), 36 deletions(-)
 copy stdnum/{ch => in_}/__init__.py (85%)
 copy stdnum/{br/cpf.py => in_/aadhaar.py} (50%)


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