Fixed #12379 -- Added Chinese (cn) localflavor package. Thanks, Xia Kai, Daniel Duan, DaNmarner and Łukasz Rekucki.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16070 bcc190cf-cafb-0310-a4f2-bffc1f526a37

3 files changed, 261 insertions, 0 deletions

diff --git a/django/contrib/localflavor/cn/__init__.py b/django/contrib/localflavor/cn/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/django/contrib/localflavor/cn/__init__.py
diff --git a/django/contrib/localflavor/cn/cn_provinces.py b/django/contrib/localflavor/cn/cn_provinces.py
new file mode 100644
index 0000000000..fe0aa37cb6
--- /dev/null
+++ b/django/contrib/localflavor/cn/cn_provinces.py
@@ -0,0 +1,49 @@
+# -*- coding: utf-8 -*-
+
+"""
+An alphabetical list of provinces for use as `choices` in a formfield.
+
+Reference:
+http://en.wikipedia.org/wiki/ISO_3166-2:CN
+http://en.wikipedia.org/wiki/Province_%28China%29
+http://en.wikipedia.org/wiki/Direct-controlled_municipality
+http://en.wikipedia.org/wiki/Autonomous_regions_of_China
+"""
+
+
+CN_PROVINCE_CHOICES = (
+    ("anhui", u"安徽"),
+    ("beijing", u"北京"),
+    ("chongqing", u"重庆"),
+    ("fujian", u"福建"),
+    ("gansu", u"甘肃"),
+    ("guangdong", u"广东"),
+    ("guangxi", u"广西壮族自治区"),
+    ("guizhou", u"贵州"),
+    ("hainan", u"海南"),
+    ("hebei", u"河北"),
+    ("heilongjiang", u"黑龙江"),
+    ("henan", u"河南"),
+    ("hongkong", u"香港"),
+    ("hubei", u"湖北"),
+    ("hunan", u"湖南"),
+    ("jiangsu", u"江苏"),
+    ("jiangxi", u"江西"),
+    ("jilin", u"吉林"),
+    ("liaoning", u"辽宁"),
+    ("macao", u"澳门"),
+    ("neimongol", u"内蒙古自治区"),
+    ("ningxia", u"宁夏回族自治区"),
+    ("qinghai", u"青海"),
+    ("shaanxi", u"陕西"),
+    ("shandong", u"山东"),
+    ("shanghai", u"上海"),
+    ("shanxi", u"山西"),
+    ("sichuan", u"四川"),
+    ("taiwan", u"台湾"),
+    ("tianjin", u"天津"),
+    ("xinjiang", u"新疆维吾尔自治区"),
+    ("xizang", u"西藏自治区"),
+    ("yunnan", u"云南"),
+    ("zhejiang", u"浙江"),
+)
diff --git a/django/contrib/localflavor/cn/forms.py b/django/contrib/localflavor/cn/forms.py
new file mode 100644
index 0000000000..3d8d45c53e
--- /dev/null
+++ b/django/contrib/localflavor/cn/forms.py
@@ -0,0 +1,212 @@
+# -*- coding: utf-8 -*-
+
+"""
+Chinese-specific form helpers
+"""
+import re
+
+from django.forms import ValidationError
+from django.forms.fields import CharField, RegexField, Select
+from django.utils.translation import ugettext_lazy as _
+
+
+__all__ = (
+    'CNProvinceSelect',
+    'CNPostCodeField',
+    'CNIDCardField',
+    'CNPhoneNumberField',
+    'CNCellNumberField',
+)
+
+
+ID_CARD_RE = r'^\d{15}(\d{2}[0-9xX])?$'
+POST_CODE_RE = r'^\d{6}$'
+PHONE_RE = r'^\d{3,4}-\d{7,8}(-\d+)?$'
+CELL_RE = r'^1[358]\d{9}$'
+
+# Valid location code used in id card checking algorithm
+CN_LOCATION_CODES = (
+     11,  # Beijing
+     12,  # Tianjin
+     13,  # Hebei
+     14,  # Shanxi
+     15,  # Nei Mongol
+     21,  # Liaoning
+     22,  # Jilin
+     23,  # Heilongjiang
+     31,  # Shanghai
+     32,  # Jiangsu
+     33,  # Zhejiang
+     34,  # Anhui
+     35,  # Fujian
+     36,  # Jiangxi
+     37,  # Shandong
+     41,  # Henan
+     42,  # Hubei
+     43,  # Hunan
+     44,  # Guangdong
+     45,  # Guangxi
+     46,  # Hainan
+     50,  # Chongqing
+     51,  # Sichuan
+     52,  # Guizhou
+     53,  # Yunnan
+     54,  # Xizang
+     61,  # Shaanxi
+     62,  # Gansu
+     63,  # Qinghai
+     64,  # Ningxia
+     65,  # Xinjiang
+     71,  # Taiwan
+     81,  # Hong Kong
+     91,  # Macao
+)
+
+class CNProvinceSelect(Select):
+    """
+    A select widget with list of Chinese provinces as choices.
+    """
+    def __init__(self, attrs=None):
+        from cn_provinces import CN_PROVINCE_CHOICES
+        super(CNProvinceSelect, self).__init__(
+            attrs, choices=CN_PROVINCE_CHOICES,
+        )
+
+
+class CNPostCodeField(RegexField):
+    """
+    A form field that validates as Chinese post code.
+    Valid code is XXXXXX where X is digit.
+    """
+    default_error_messages = {
+        'invalid': _(u'Enter a post code in the format XXXXXX.'),
+    }
+
+    def __init__(self, *args, **kwargs):
+        super(CNPostCodeField, self).__init__(POST_CODE_RE, *args, **kwargs)
+
+
+class CNIDCardField(CharField):
+    """
+    A form field that validates as Chinese Identification Card Number.
+
+    This field would check the following restrictions:
+        * the length could only be 15 or 18.
+        * if the length is 18, the last digit could be x or X.
+        * has a valid checksum.(length 18 only)
+        * has a valid birthdate.
+        * has a valid location.
+
+    The checksum algorithm is described in GB11643-1999.
+    """
+    default_error_messages = {
+        'invalid': _(u'ID Card Number consists of 15 or 18 digits.'),
+        'checksum': _(u'Invalid ID Card Number: Wrong checksum'),
+        'birthday': _(u'Invalid ID Card Number: Wrong birthdate'),
+        'location': _(u'Invalid ID Card Number: Wrong location code'),
+    }
+
+    def __init__(self, max_length=18, min_length=15, *args, **kwargs):
+        super(CNIDCardField, self).__init__(max_length, min_length, *args,
+                                         **kwargs)
+
+    def clean(self, value):
+        """
+        Check whether the input is a valid ID Card Number.
+        """
+        # Check the length of the ID card number.
+        super(CNIDCardField, self).clean(value)
+        if not value:
+            return u""
+        # Check whether this ID card number has valid format
+        if not re.match(ID_CARD_RE, value):
+            raise ValidationError(self.error_messages['invalid'])
+        # Check the birthday of the ID card number.
+        if not self.has_valid_birthday(value):
+            raise ValidationError(self.error_messages['birthday'])
+        # Check the location of the ID card number.
+        if not self.has_valid_location(value):
+            raise ValidationError(self.error_messages['location'])
+        # Check the checksum of the ID card number.
+        value = value.upper()
+        if not self.has_valid_checksum(value):
+            raise ValidationError(self.error_messages['checksum'])
+        return u'%s' % value
+
+    def has_valid_birthday(self, value):
+        """
+        This function would grab the birthdate from the ID card number and test
+        whether it is a valid date.
+        """
+        from datetime import datetime
+        if len(value) == 15:
+            # 1st generation ID card
+            time_string = value[6:12]
+            format_string = "%y%m%d"
+        else:
+            # 2nd generation ID card
+            time_string = value[6:14]
+            format_string = "%Y%m%d"
+        try:
+            datetime.strptime(time_string, format_string)
+            return True
+        except ValueError:
+            # invalid date
+            return False
+
+    def has_valid_location(self, value):
+        """
+        This method checks if the first two digits in the ID Card are valid.
+        """
+        return int(value[:2]) in CN_LOCATION_CODES
+
+    def has_valid_checksum(self, value):
+        """
+        This method checks if the last letter/digit in value is valid
+        according to the algorithm the ID Card follows.
+        """
+        # If the length of the number is not 18, then the number is a 1st
+        # generation ID card number, and there is no checksum to be checked.
+        if len(value) != 18:
+            return True
+        checksum_index = sum(
+            map(
+                lambda a,b:a*(ord(b)-ord('0')),
+                (7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2),
+                value[:17],
+            ),
+        ) % 11
+        return '10X98765432'[checksum_index] == value[-1]
+
+
+class CNPhoneNumberField(RegexField):
+    """
+    A form field that validates as Chinese phone number
+    A valid phone number could be like:
+        010-55555555
+    Considering there might be extension phone numbers, so this could also be:
+        010-55555555-35
+    """
+    default_error_messages = {
+        'invalid': _(u'Enter a valid phone number.'),
+    }
+
+    def __init__(self, *args, **kwargs):
+        super(CNPhoneNumberField, self).__init__(PHONE_RE, *args, **kwargs)
+
+
+class CNCellNumberField(RegexField):
+    """
+    A form field that validates as Chinese cell number
+    A valid cell number could be like:
+        13012345678
+    We used a rough rule here, the first digit should be 1, the second could be
+    3, 5 and 8, the rest could be what so ever.
+    The length of the cell number should be 11.
+    """
+    default_error_messages = {
+        'invalid': _(u'Enter a valid cell number.'),
+    }
+
+    def __init__(self, *args, **kwargs):
+        super(CNCellNumberField, self).__init__(CELL_RE, *args, **kwargs)