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Shared/lib/python3.4/site-packages/stdnum/imsi.py

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+# imsi.py - functions for handling International Mobile Subscriber Identity
+#           (IMSI) numbers
+#
+# Copyright (C) 2011, 2012, 2013 Arthur de Jong
+#
+# 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
+
+"""IMSI (International Mobile Subscriber Identity).
+
+The IMSI (International Mobile Subscriber Identity) is used to identify
+mobile phone users (the SIM).
+
+>>> validate('429011234567890')
+'429011234567890'
+>>> validate('439011234567890')  # unknown MCC
+Traceback (most recent call last):
+    ...
+InvalidFormat: ...
+>>> split('429011234567890')
+('429', '01', '1234567890')
+>>> split('310150123456789')
+('310', '150', '123456789')
+>>> info('460001234567890')['mcc']
+'460'
+>>> str(info('460001234567890')['country'])
+'China'
+"""
+
+from stdnum.exceptions import *
+from stdnum.util import clean
+
+
+def compact(number):
+    """Convert the IMSI number to the minimal representation. This strips the
+    number of any valid separators and removes surrounding whitespace."""
+    return clean(number, ' -').strip().upper()
+
+
+def split(number):
+    """Split the specified IMSI into a Mobile Country Code (MCC), a Mobile
+    Network Code (MNC), a Mobile Station Identification Number (MSIN)."""
+    from stdnum import numdb
+    # clean up number
+    number = compact(number)
+    # split the number
+    return tuple(numdb.get('imsi').split(number))
+
+
+def validate(number):
+    """Checks to see if the number provided is a valid IMSI."""
+    number = compact(number)
+    if not number.isdigit():
+        raise InvalidFormat()
+    if len(number) not in (14, 15):
+        raise InvalidLength()
+    if len(split(number)) != 3:
+        raise InvalidFormat()
+    return number
+
+
+def info(number):
+    """Return a dictionary of data about the supplied number."""
+    from stdnum import numdb
+    # clean up number
+    number = compact(number)
+    # split the number
+    info = dict(number=number)
+    mcc_info, mnc_info, msin_info = numdb.get('imsi').info(number)
+    info['mcc'] = mcc_info[0]
+    info.update(mcc_info[1])
+    info['mnc'] = mnc_info[0]
+    info.update(mnc_info[1])
+    info['msin'] = msin_info[0]
+    info.update(msin_info[1])
+    return info
+
+
+def is_valid(number):
+    """Checks to see if the number provided is a valid IMSI."""
+    try:
+        return bool(validate(number))
+    except ValidationError:
+        return False