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import re

baseChar = """[#x0041-#x005A] | [#x0061-#x007A] | [#x00C0-#x00D6] | [#x00D8-#x00F6] | [#x00F8-#x00FF] | [#x0100-#x0131] | [#x0134-#x013E] | [#x0141-#x0148] | [#x014A-#x017E] | [#x0180-#x01C3] | [#x01CD-#x01F0] | [#x01F4-#x01F5] | [#x01FA-#x0217] | [#x0250-#x02A8] | [#x02BB-#x02C1] | #x0386 | [#x0388-#x038A] | #x038C | [#x038E-#x03A1] | [#x03A3-#x03CE] | [#x03D0-#x03D6] | #x03DA | #x03DC | #x03DE | #x03E0 | [#x03E2-#x03F3] | [#x0401-#x040C] | [#x040E-#x044F] | [#x0451-#x045C] | [#x045E-#x0481] | [#x0490-#x04C4] | [#x04C7-#x04C8] | [#x04CB-#x04CC] | [#x04D0-#x04EB] | [#x04EE-#x04F5] | [#x04F8-#x04F9] | [#x0531-#x0556] | #x0559 | [#x0561-#x0586] | [#x05D0-#x05EA] | [#x05F0-#x05F2] | [#x0621-#x063A] | [#x0641-#x064A] | [#x0671-#x06B7] | [#x06BA-#x06BE] | [#x06C0-#x06CE] | [#x06D0-#x06D3] | #x06D5 | [#x06E5-#x06E6] | [#x0905-#x0939] | #x093D | [#x0958-#x0961] | [#x0985-#x098C] | [#x098F-#x0990] | [#x0993-#x09A8] | [#x09AA-#x09B0] | #x09B2 | [#x09B6-#x09B9] | [#x09DC-#x09DD] | [#x09DF-#x09E1] | [#x09F0-#x09F1] | [#x0A05-#x0A0A] | [#x0A0F-#x0A10] | [#x0A13-#x0A28] | [#x0A2A-#x0A30] | [#x0A32-#x0A33] | [#x0A35-#x0A36] | [#x0A38-#x0A39] | [#x0A59-#x0A5C] | #x0A5E | [#x0A72-#x0A74] | [#x0A85-#x0A8B] | #x0A8D | [#x0A8F-#x0A91] | [#x0A93-#x0AA8] | [#x0AAA-#x0AB0] | [#x0AB2-#x0AB3] | [#x0AB5-#x0AB9] | #x0ABD | #x0AE0 | [#x0B05-#x0B0C] | [#x0B0F-#x0B10] | [#x0B13-#x0B28] | [#x0B2A-#x0B30] | [#x0B32-#x0B33] | [#x0B36-#x0B39] | #x0B3D | [#x0B5C-#x0B5D] | [#x0B5F-#x0B61] | [#x0B85-#x0B8A] | [#x0B8E-#x0B90] | [#x0B92-#x0B95] | [#x0B99-#x0B9A] | #x0B9C | [#x0B9E-#x0B9F] | [#x0BA3-#x0BA4] | [#x0BA8-#x0BAA] | [#x0BAE-#x0BB5] | [#x0BB7-#x0BB9] | [#x0C05-#x0C0C] | [#x0C0E-#x0C10] | [#x0C12-#x0C28] | [#x0C2A-#x0C33] | [#x0C35-#x0C39] | [#x0C60-#x0C61] | [#x0C85-#x0C8C] | [#x0C8E-#x0C90] | [#x0C92-#x0CA8] | [#x0CAA-#x0CB3] | [#x0CB5-#x0CB9] | #x0CDE | [#x0CE0-#x0CE1] | [#x0D05-#x0D0C] | [#x0D0E-#x0D10] | [#x0D12-#x0D28] | [#x0D2A-#x0D39] | [#x0D60-#x0D61] | [#x0E01-#x0E2E] | #x0E30 | [#x0E32-#x0E33] | [#x0E40-#x0E45] | [#x0E81-#x0E82] | #x0E84 | [#x0E87-#x0E88] | #x0E8A | #x0E8D | [#x0E94-#x0E97] | [#x0E99-#x0E9F] | [#x0EA1-#x0EA3] | #x0EA5 | #x0EA7 | [#x0EAA-#x0EAB] | [#x0EAD-#x0EAE] | #x0EB0 | [#x0EB2-#x0EB3] | #x0EBD | [#x0EC0-#x0EC4] | [#x0F40-#x0F47] | [#x0F49-#x0F69] | [#x10A0-#x10C5] | [#x10D0-#x10F6] | #x1100 | [#x1102-#x1103] | [#x1105-#x1107] | #x1109 | [#x110B-#x110C] | [#x110E-#x1112] | #x113C | #x113E | #x1140 | #x114C | #x114E | #x1150 | [#x1154-#x1155] | #x1159 | [#x115F-#x1161] | #x1163 | #x1165 | #x1167 | #x1169 | [#x116D-#x116E] | [#x1172-#x1173] | #x1175 | #x119E | #x11A8 | #x11AB | [#x11AE-#x11AF] | [#x11B7-#x11B8] | #x11BA | [#x11BC-#x11C2] | #x11EB | #x11F0 | #x11F9 | [#x1E00-#x1E9B] | [#x1EA0-#x1EF9] | [#x1F00-#x1F15] | [#x1F18-#x1F1D] | [#x1F20-#x1F45] | [#x1F48-#x1F4D] | [#x1F50-#x1F57] | #x1F59 | #x1F5B | #x1F5D | [#x1F5F-#x1F7D] | [#x1F80-#x1FB4] | [#x1FB6-#x1FBC] | #x1FBE | [#x1FC2-#x1FC4] | [#x1FC6-#x1FCC] | [#x1FD0-#x1FD3] | [#x1FD6-#x1FDB] | [#x1FE0-#x1FEC] | [#x1FF2-#x1FF4] | [#x1FF6-#x1FFC] | #x2126 | [#x212A-#x212B] | #x212E | [#x2180-#x2182] | [#x3041-#x3094] | [#x30A1-#x30FA] | [#x3105-#x312C] | [#xAC00-#xD7A3]"""

ideographic = """[#x4E00-#x9FA5] | #x3007 | [#x3021-#x3029]"""

combiningCharacter = """[#x0300-#x0345] | [#x0360-#x0361] | [#x0483-#x0486] | [#x0591-#x05A1] | [#x05A3-#x05B9] | [#x05BB-#x05BD] | #x05BF | [#x05C1-#x05C2] | #x05C4 | [#x064B-#x0652] | #x0670 | [#x06D6-#x06DC] | [#x06DD-#x06DF] | [#x06E0-#x06E4] | [#x06E7-#x06E8] | [#x06EA-#x06ED] | [#x0901-#x0903] | #x093C | [#x093E-#x094C] | #x094D | [#x0951-#x0954] | [#x0962-#x0963] | [#x0981-#x0983] | #x09BC | #x09BE | #x09BF | [#x09C0-#x09C4] | [#x09C7-#x09C8] | [#x09CB-#x09CD] | #x09D7 | [#x09E2-#x09E3] | #x0A02 | #x0A3C | #x0A3E | #x0A3F | [#x0A40-#x0A42] | [#x0A47-#x0A48] | [#x0A4B-#x0A4D] | [#x0A70-#x0A71] | [#x0A81-#x0A83] | #x0ABC | [#x0ABE-#x0AC5] | [#x0AC7-#x0AC9] | [#x0ACB-#x0ACD] | [#x0B01-#x0B03] | #x0B3C | [#x0B3E-#x0B43] | [#x0B47-#x0B48] | [#x0B4B-#x0B4D] | [#x0B56-#x0B57] | [#x0B82-#x0B83] | [#x0BBE-#x0BC2] | [#x0BC6-#x0BC8] | [#x0BCA-#x0BCD] | #x0BD7 | [#x0C01-#x0C03] | [#x0C3E-#x0C44] | [#x0C46-#x0C48] | [#x0C4A-#x0C4D] | [#x0C55-#x0C56] | [#x0C82-#x0C83] | [#x0CBE-#x0CC4] | [#x0CC6-#x0CC8] | [#x0CCA-#x0CCD] | [#x0CD5-#x0CD6] | [#x0D02-#x0D03] | [#x0D3E-#x0D43] | [#x0D46-#x0D48] | [#x0D4A-#x0D4D] | #x0D57 | #x0E31 | [#x0E34-#x0E3A] | [#x0E47-#x0E4E] | #x0EB1 | [#x0EB4-#x0EB9] | [#x0EBB-#x0EBC] | [#x0EC8-#x0ECD] | [#x0F18-#x0F19] | #x0F35 | #x0F37 | #x0F39 | #x0F3E | #x0F3F | [#x0F71-#x0F84] | [#x0F86-#x0F8B] | [#x0F90-#x0F95] | #x0F97 | [#x0F99-#x0FAD] | [#x0FB1-#x0FB7] | #x0FB9 | [#x20D0-#x20DC] | #x20E1 | [#x302A-#x302F] | #x3099 | #x309A"""

digit = """[#x0030-#x0039] | [#x0660-#x0669] | [#x06F0-#x06F9] | [#x0966-#x096F] | [#x09E6-#x09EF] | [#x0A66-#x0A6F] | [#x0AE6-#x0AEF] | [#x0B66-#x0B6F] | [#x0BE7-#x0BEF] | [#x0C66-#x0C6F] | [#x0CE6-#x0CEF] | [#x0D66-#x0D6F] | [#x0E50-#x0E59] | [#x0ED0-#x0ED9] | [#x0F20-#x0F29]"""

extender = """#x00B7 | #x02D0 | #x02D1 | #x0387 | #x0640 | #x0E46 | #x0EC6 | #x3005 | [#x3031-#x3035] | [#x309D-#x309E] | [#x30FC-#x30FE]"""

letter = " | ".join([baseChar, ideographic])

#Without the

name = " | ".join([letter, digit, ".", "-", "_", combiningCharacter,

extender])

nameFirst = " | ".join([letter, "_"])

reChar = re.compile(r"#x([\d|A-F]{4,4})")

reCharRange = re.compile(r"\[#x([\d|A-F]{4,4})-#x([\d|A-F]{4,4})\]")

def charStringToList(chars):

charRanges = [item.strip() for item in chars.split(" | ")]

rv = []

for item in charRanges:

foundMatch = False

for regexp in (reChar, reCharRange):

match = regexp.match(item)

if match is not None:

rv.append([hexToInt(item) for item in match.groups()])

if len(rv[-1]) == 1:

rv[-1] = rv[-1]*2

foundMatch = True

break

if not foundMatch:

assert len(item) == 1

rv.append([ord(item)] * 2)

rv = normaliseCharList(rv)

return rv

def normaliseCharList(charList):

charList = sorted(charList)

for item in charList:

assert item[1] >= item[0]

rv = []

i = 0

while i < len(charList):

j = 1

rv.append(charList[i])

while i + j < len(charList) and charList[i+j][0] <= rv[-1][1] + 1:

rv[-1][1] = charList[i+j][1]

j += 1

i += j

return rv

#We don't really support characters above the BMP :(

max_unicode = int("FFFF", 16)

def missingRanges(charList):

rv = []

if charList[0] != 0:

rv.append([0, charList[0][0] - 1])

for i, item in enumerate(charList[:-1]):

rv.append([item[1]+1, charList[i+1][0] - 1])

if charList[-1][1] != max_unicode:

rv.append([charList[-1][1] + 1, max_unicode])

return rv

def listToRegexpStr(charList):

rv = []

for item in charList:

if item[0] == item[1]:

rv.append(intToUnicodeStr(item[0]))

else:

rv.append(intToUnicodeStr(item[0]) + "-" + intToUnicodeStr(item[1]))

return "[%s]"%"|".join(rv)

def hexToInt(hex_str):

return int(hex_str, 16)

def intToUnicodeStr(intValue):

#There must be a better (non-evil) way to do this

return escapeRegexp(eval(r"u'\u%s'"%hex(intValue)[2:].rjust(4, "0")))

def escapeRegexp(string):

specialCharacters = (".", "^", "$", "*", "+", "?", "{", "}",

"[", "]", "|", "(", ")", "-")

for char in specialCharacters:

string = string.replace(char, r"\\" + char)

if char in string:

print(string)

return string

#output from the above

nonXmlBMPRegexp = re.compile('[\x00-,|/|:-@|\\\\[-\\\\^|`|\\\\{-\xb6|\xb8-\xbf|\xd7|\xf7|\u0132-\u0133|\u013f-\u0140|\u0149|\u017f|\u01c4-\u01cc|\u01f1-\u01f3|\u01f6-\u01f9|\u0218-\u024f|\u02a9-\u02ba|\u02c2-\u02cf|\u02d2-\u02ff|\u0346-\u035f|\u0362-\u0385|\u038b|\u038d|\u03a2|\u03cf|\u03d7-\u03d9|\u03db|\u03dd|\u03df|\u03e1|\u03f4-\u0400|\u040d|\u0450|\u045d|\u0482|\u0487-\u048f|\u04c5-\u04c6|\u04c9-\u04ca|\u04cd-\u04cf|\u04ec-\u04ed|\u04f6-\u04f7|\u04fa-\u0530|\u0557-\u0558|\u055a-\u0560|\u0587-\u0590|\u05a2|\u05ba|\u05be|\u05c0|\u05c3|\u05c5-\u05cf|\u05eb-\u05ef|\u05f3-\u0620|\u063b-\u063f|\u0653-\u065f|\u066a-\u066f|\u06b8-\u06b9|\u06bf|\u06cf|\u06d4|\u06e9|\u06ee-\u06ef|\u06fa-\u0900|\u0904|\u093a-\u093b|\u094e-\u0950|\u0955-\u0957|\u0964-\u0965|\u0970-\u0980|\u0984|\u098d-\u098e|\u0991-\u0992|\u09a9|\u09b1|\u09b3-\u09b5|\u09ba-\u09bb|\u09bd|\u09c5-\u09c6|\u09c9-\u09ca|\u09ce-\u09d6|\u09d8-\u09db|\u09de|\u09e4-\u09e5|\u09f2-\u0a01|\u0a03-\u0a04|\u0a0b-\u0a0e|\u0a11-\u0a12|\u0a29|\u0a31|\u0a34|\u0a37|\u0a3a-\u0a3b|\u0a3d|\u0a43-\u0a46|\u0a49-\u0a4a|\u0a4e-\u0a58|\u0a5d|\u0a5f-\u0a65|\u0a75-\u0a80|\u0a84|\u0a8c|\u0a8e|\u0a92|\u0aa9|\u0ab1|\u0ab4|\u0aba-\u0abb|\u0ac6|\u0aca|\u0ace-\u0adf|\u0ae1-\u0ae5|\u0af0-\u0b00|\u0b04|\u0b0d-\u0b0e|\u0b11-\u0b12|\u0b29|\u0b31|\u0b34-\u0b35|\u0b3a-\u0b3b|\u0b44-\u0b46|\u0b49-\u0b4a|\u0b4e-\u0b55|\u0b58-\u0b5b|\u0b5e|\u0b62-\u0b65|\u0b70-\u0b81|\u0b84|\u0b8b-\u0b8d|\u0b91|\u0b96-\u0b98|\u0b9b|\u0b9d|\u0ba0-\u0ba2|\u0ba5-\u0ba7|\u0bab-\u0bad|\u0bb6|\u0bba-\u0bbd|\u0bc3-\u0bc5|\u0bc9|\u0bce-\u0bd6|\u0bd8-\u0be6|\u0bf0-\u0c00|\u0c04|\u0c0d|\u0c11|\u0c29|\u0c34|\u0c3a-\u0c3d|\u0c45|\u0c49|\u0c4e-\u0c54|\u0c57-\u0c5f|\u0c62-\u0c65|\u0c70-\u0c81|\u0c84|\u0c8d|\u0c91|\u0ca9|\u0cb4|\u0cba-\u0cbd|\u0cc5|\u0cc9|\u0cce-\u0cd4|\u0cd7-\u0cdd|\u0cdf|\u0ce2-\u0ce5|\u0cf0-\u0d01|\u0d04|\u0d0d|\u0d11|\u0d29|\u0d3a-\u0d3d|\u0d44-\u0d45|\u0d49|\u0d4e-\u0d56|\u0d58-\u0d5f|\u0d62-\u0d65|\u0d70-\u0e00|\u0e2f|\u0e3b-\u0e3f|\u0e4f|\u0e5a-\u0e80|\u0e83|\u0e85-\u0e86|\u0e89|\u0e8b-\u0e8c|\u0e8e-\u0e93|\u0e98|\u0ea0|\u0ea4|\u0ea6|\u0ea8-\u0ea9|\u0eac|\u0eaf|\u0eba|\u0ebe-\u0ebf|\u0ec5|\u0ec7|\u0ece-\u0ecf|\u0eda-\u0f17|\u0f1a-\u0f1f|\u0f2a-\u0f34|\u0f36|\u0f38|\u0f3a-\u0f3d|\u0f48|\u0f6a-\u0f70|\u0f85|\u0f8c-\u0f8f|\u0f96|\u0f98|\u0fae-\u0fb0|\u0fb8|\u0fba-\u109f|\u10c6-\u10cf|\u10f7-\u10ff|\u1101|\u1104|\u1108|\u110a|\u110d|\u1113-\u113b|\u113d|\u113f|\u1141-\u114b|\u114d|\u114f|\u1151-\u1153|\u1156-\u1158|\u115a-\u115e|\u1162|\u1164|\u1166|\u1168|\u116a-\u116c|\u116f-\u1171|\u1174|\u1176-\u119d|\u119f-\u11a7|\u11a9-\u11aa|\u11ac-\u11ad|\u11b0-\u11b6|\u11b9|\u11bb|\u11c3-\u11ea|\u11ec-\u11ef|\u11f1-\u11f8|\u11fa-\u1dff|\u1e9c-\u1e9f|\u1efa-\u1eff|\u1f16-\u1f17|\u1f1e-\u1f1f|\u1f46-\u1f47|\u1f4e-\u1f4f|\u1f58|\u1f5a|\u1f5c|\u1f5e|\u1f7e-\u1f7f|\u1fb5|\u1fbd|\u1fbf-\u1fc1|\u1fc5|\u1fcd-\u1fcf|\u1fd4-\u1fd5|\u1fdc-\u1fdf|\u1fed-\u1ff1|\u1ff5|\u1ffd-\u20cf|\u20dd-\u20e0|\u20e2-\u2125|\u2127-\u2129|\u212c-\u212d|\u212f-\u217f|\u2183-\u3004|\u3006|\u3008-\u3020|\u3030|\u3036-\u3040|\u3095-\u3098|\u309b-\u309c|\u309f-\u30a0|\u30fb|\u30ff-\u3104|\u312d-\u4dff|\u9fa6-\uabff|\ud7a4-\uffff]')

class InfosetFilter(object):

replacementRegexp = re.compile(r"U[\dA-F]{5,5}")

def __init__(self, replaceChars = None,

replaceRanges = None,

dropXmlnsLocalName = False,

dropXmlnsAttrNs = False,

preventDoubleDashComments = False,

preventDashAtCommentEnd = False,

replaceFormFeedCharacters = True):

if replaceRanges is not None or replaceChars is not None:

raise NotImplementedError

else:

self.replaceCharsRegexp = nonXmlBMPRegexp

self.dropXmlnsLocalName = dropXmlnsLocalName

self.dropXmlnsAttrNs = dropXmlnsAttrNs

self.preventDoubleDashComments = preventDoubleDashComments

self.preventDashAtCommentEnd = preventDashAtCommentEnd

self.replaceFormFeedCharacters = replaceFormFeedCharacters

self.replaceCache = {}

def coerceAttribute(self, name, namespace=None):

if self.dropXmlnsLocalName and name.startswith("xmlns:"):

#Need a datalosswarning here

return None

elif (self.dropXmlnsAttrNs and

namespace == "http://www.w3.org/2000/xmlns/"):

return None

else:

return self.toXmlName(name)

def coerceElement(self, name, namespace=None):

return self.toXmlName(name)

def coerceComment(self, data):

if self.preventDoubleDashComments:

while "--" in data:

data = data.replace("--", "- -")

return data

def coerceCharacters(self, data):

if self.replaceFormFeedCharacters:

data = data.replace("\x0C", " ")

#Other non-xml characters

return data

def toXmlName(self, name):

replaceChars = set(self.replaceCharsRegexp.findall(name))

for char in replaceChars:

if char in self.replaceCache:

replacement = self.replaceCache[char]

else:

replacement = self.escapeChar(char)

name = name.replace(char, replacement)

return name

def fromXmlName(self, name):

for item in set(self.replacementRegexp.findall(name)):

name = name.replace(item, self.unescapeChar(item))

return name

def escapeChar(self, char):

replacement = "U" + hex(ord(char))[2:].upper().rjust(5, "0")

self.replaceCache[char] = replacement

return replacement

def unescapeChar(self, charcode):

return chr(int(charcode[1:], 16))