bed4f7e109
git-svn-id: http://svn.robofab.com/branches/ufo3k@369 b5fa9d6c-a76f-4ffd-b3cb-f825fc41095c
874 lines
21 KiB
Python
874 lines
21 KiB
Python
"""Various low level data validators."""
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import os
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import calendar
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# -------
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# Generic
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# -------
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def genericTypeValidator(value, typ):
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"""
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Generic. (Added at version 2.)
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"""
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return isinstance(value, typ)
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def genericIntListValidator(values, validValues):
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"""
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Generic. (Added at version 2.)
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"""
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if not isinstance(values, (list, tuple)):
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return False
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valuesSet = set(values)
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validValuesSet = set(validValues)
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if len(valuesSet - validValuesSet) > 0:
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return False
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for value in values:
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if not isinstance(value, int):
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return False
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return True
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def genericNonNegativeIntValidator(value):
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"""
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Generic. (Added at version 3.)
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"""
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if not isinstance(value, int):
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return False
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if value < 0:
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return False
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return True
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def genericNonNegativeNumberValidator(value):
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"""
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Generic. (Added at version 3.)
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"""
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if not isinstance(value, (int, float)):
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return False
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if value < 0:
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return False
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return True
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def genericDictValidator(value, prototype):
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"""
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Generic. (Added at version 3.)
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"""
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# not a dict
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if not isinstance(value, dict):
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return False
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# missing required keys
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for key, (typ, required) in prototype.items():
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if not required:
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continue
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if key not in value:
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return False
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# unknown keys
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for key in value.keys():
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if key not in prototype:
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return False
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# incorrect types
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for key, v in value.items():
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prototypeType = prototype[key][0]
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if not isinstance(v, prototypeType):
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return False
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return True
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# --------------
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# fontinfo.plist
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# --------------
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# Data Validators
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def fontInfoStyleMapStyleNameValidator(value):
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"""
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Version 2+.
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"""
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options = ["regular", "italic", "bold", "bold italic"]
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return value in options
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def fontInfoOpenTypeGaspRangeRecordsValidator(value):
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"""
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Version 3+.
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"""
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if not isinstance(value, list):
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return False
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if len(value) == 0:
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return False
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validBehaviors = [0, 1, 2, 3]
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dictPrototype = dict(rangeMaxPPEM=(int, True), rangeGaspBehavior=(list, True))
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ppemOrder = []
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for rangeRecord in value:
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if not genericDictValidator(rangeRecord, dictPrototype):
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return False
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ppem = rangeRecord["rangeMaxPPEM"]
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behavior = rangeRecord["rangeGaspBehavior"]
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ppemValidity = genericNonNegativeIntValidator(ppem)
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if not ppemValidity:
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return False
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behaviorValidity = genericIntListValidator(behavior, validBehaviors)
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if not behaviorValidity:
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return False
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ppemOrder.append(ppem)
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if ppemOrder != sorted(ppemOrder):
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return False
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if ppemOrder[-1] != 0xFFFF:
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return False
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return True
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def fontInfoOpenTypeHeadCreatedValidator(value):
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"""
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Version 2+.
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"""
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# format: 0000/00/00 00:00:00
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if not isinstance(value, basestring):
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return False
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# basic formatting
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if not len(value) == 19:
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return False
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if value.count(" ") != 1:
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return False
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date, time = value.split(" ")
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if date.count("/") != 2:
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return False
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if time.count(":") != 2:
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return False
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# date
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year, month, day = date.split("/")
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if len(year) != 4:
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return False
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if len(month) != 2:
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return False
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if len(day) != 2:
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return False
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try:
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year = int(year)
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month = int(month)
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day = int(day)
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except ValueError:
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return False
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if month < 1 or month > 12:
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return False
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monthMaxDay = calendar.monthrange(year, month)
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if month > monthMaxDay:
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return False
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# time
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hour, minute, second = time.split(":")
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if len(hour) != 2:
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return False
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if len(minute) != 2:
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return False
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if len(second) != 2:
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return False
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try:
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hour = int(hour)
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minute = int(minute)
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second = int(second)
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except ValueError:
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return False
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if hour < 0 or hour > 23:
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return False
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if minute < 0 or minute > 59:
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return False
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if second < 0 or second > 59:
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return True
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# fallback
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return True
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def fontInfoOpenTypeNameRecordsValidator(value):
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"""
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Version 3+.
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"""
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if not isinstance(value, list):
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return False
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validKeys = set(["nameID", "platformID", "encodingID", "languageID", "string"])
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dictPrototype = dict(nameID=(int, True), platformID=(int, True), encodingID=(int, True), languageID=(int, True), string=(basestring, True))
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seenRecords = []
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for nameRecord in value:
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if not genericDictValidator(nameRecord, dictPrototype):
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return False
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recordKey = (nameRecord["nameID"], nameRecord["platformID"], nameRecord["encodingID"], nameRecord["languageID"])
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if recordKey in seenRecords:
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return False
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seenRecords.append(recordKey)
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return True
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def fontInfoOpenTypeOS2WeightClassValidator(value):
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"""
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Version 2+.
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"""
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if not isinstance(value, int):
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return False
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if value < 0:
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return False
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return True
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def fontInfoOpenTypeOS2WidthClassValidator(value):
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"""
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Version 2+.
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"""
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if not isinstance(value, int):
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return False
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if value < 1:
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return False
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if value > 9:
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return False
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return True
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def fontInfoVersion2OpenTypeOS2PanoseValidator(values):
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"""
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Version 2.
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"""
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if not isinstance(values, (list, tuple)):
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return False
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if len(values) != 10:
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return False
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for value in values:
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if not isinstance(value, int):
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return False
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# XXX further validation?
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return True
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def fontInfoVersion3OpenTypeOS2PanoseValidator(values):
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"""
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Version 3+.
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"""
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if not isinstance(values, (list, tuple)):
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return False
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if len(values) != 10:
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return False
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for value in values:
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if not isinstance(value, int):
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return False
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if value < 0:
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return False
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# XXX further validation?
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return True
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def fontInfoOpenTypeOS2FamilyClassValidator(values):
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"""
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Version 2+.
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"""
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if not isinstance(values, (list, tuple)):
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return False
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if len(values) != 2:
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return False
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for value in values:
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if not isinstance(value, int):
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return False
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classID, subclassID = values
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if classID < 0 or classID > 14:
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return False
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if subclassID < 0 or subclassID > 15:
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return False
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return True
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def fontInfoPostscriptBluesValidator(values):
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"""
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Version 2+.
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"""
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if not isinstance(values, (list, tuple)):
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return False
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if len(values) > 14:
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return False
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if len(values) % 2:
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return False
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for value in values:
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if not isinstance(value, (int, float)):
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return False
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return True
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def fontInfoPostscriptOtherBluesValidator(values):
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"""
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Version 2+.
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"""
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if not isinstance(values, (list, tuple)):
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return False
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if len(values) > 10:
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return False
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if len(values) % 2:
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return False
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for value in values:
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if not isinstance(value, (int, float)):
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return False
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return True
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def fontInfoPostscriptStemsValidator(values):
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"""
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Version 2+.
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"""
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if not isinstance(values, (list, tuple)):
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return False
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if len(values) > 12:
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return False
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for value in values:
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if not isinstance(value, (int, float)):
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return False
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return True
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def fontInfoPostscriptWindowsCharacterSetValidator(value):
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"""
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Version 2+.
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"""
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validValues = range(1, 21)
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if value not in validValues:
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return False
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return True
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def fontInfoWOFFMetadataUniqueIDValidator(value):
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"""
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Version 3+.
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"""
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dictPrototype = dict(id=(basestring, True))
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if not genericDictValidator(value, dictPrototype):
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return False
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return True
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def fontInfoWOFFMetadataVendorValidator(value):
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"""
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Version 3+.
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"""
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dictPrototype = {"name" : (basestring, True), "url" : (basestring, False), "dir" : (basestring, False), "class" : (basestring, False)}
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if not genericDictValidator(value, dictPrototype):
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return False
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if "dir" in value and value.get("dir") not in ("ltr", "rtl"):
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return False
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return True
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def fontInfoWOFFMetadataCreditsValidator(value):
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"""
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Version 3+.
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"""
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dictPrototype = dict(credits=(list, True))
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if not genericDictValidator(value, dictPrototype):
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return False
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if not len(value["credits"]):
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return False
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dictPrototype = {"name" : (basestring, True), "url" : (basestring, False), "role" : (basestring, False), "dir" : (basestring, False), "class" : (basestring, False)}
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for credit in value["credits"]:
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if not genericDictValidator(credit, dictPrototype):
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return False
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if "dir" in credit and credit.get("dir") not in ("ltr", "rtl"):
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return False
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return True
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def fontInfoWOFFMetadataDescriptionValidator(value):
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"""
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Version 3+.
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"""
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dictPrototype = dict(url=(basestring, False), text=(list, True))
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if not genericDictValidator(value, dictPrototype):
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return False
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for text in value["text"]:
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if not fontInfoWOFFMetadataTextValue(text):
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return False
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return True
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def fontInfoWOFFMetadataLicenseValidator(value):
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"""
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Version 3+.
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"""
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dictPrototype = dict(url=(basestring, False), text=(list, False), id=(basestring, False))
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if not genericDictValidator(value, dictPrototype):
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return False
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if "text" in value:
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for text in value["text"]:
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if not fontInfoWOFFMetadataTextValue(text):
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return False
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return True
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def fontInfoWOFFMetadataTrademarkValidator(value):
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"""
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Version 3+.
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"""
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dictPrototype = dict(text=(list, True))
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if not genericDictValidator(value, dictPrototype):
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return False
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for text in value["text"]:
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if not fontInfoWOFFMetadataTextValue(text):
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return False
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return True
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def fontInfoWOFFMetadataCopyrightValidator(value):
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"""
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Version 3+.
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"""
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dictPrototype = dict(text=(list, True))
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if not genericDictValidator(value, dictPrototype):
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return False
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for text in value["text"]:
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if not fontInfoWOFFMetadataTextValue(text):
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return False
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return True
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def fontInfoWOFFMetadataLicenseeValidator(value):
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"""
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Version 3+.
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"""
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dictPrototype = {"name" : (basestring, True), "dir" : (basestring, False), "class" : (basestring, False)}
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if not genericDictValidator(value, dictPrototype):
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return False
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if "dir" in value and value.get("dir") not in ("ltr", "rtl"):
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return False
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return True
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def fontInfoWOFFMetadataTextValue(value):
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"""
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Version 3+.
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"""
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dictPrototype = {"text" : (basestring, True), "language" : (basestring, False), "dir" : (basestring, False), "class" : (basestring, False)}
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if not genericDictValidator(value, dictPrototype):
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return False
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if "dir" in value and value.get("dir") not in ("ltr", "rtl"):
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return False
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return True
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def fontInfoWOFFMetadataExtensionsValidator(value):
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"""
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Version 3+.
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"""
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if not isinstance(value, list):
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return False
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if not value:
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return False
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for extension in value:
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if not fontInfoWOFFMetadataExtensionValidator(extension):
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return False
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return True
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def fontInfoWOFFMetadataExtensionValidator(value):
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"""
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Version 3+.
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"""
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dictPrototype = dict(names=(list, False), items=(list, True))
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if not genericDictValidator(value, dictPrototype):
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return False
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if "names" in value:
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for name in value["names"]:
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if not fontInfoWOFFMetadataExtensionNameValidator(name):
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return False
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for item in value["items"]:
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if not fontInfoWOFFMetadataExtensionItemValidator(item):
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return False
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return True
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def fontInfoWOFFMetadataExtensionItemValidator(value):
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"""
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Version 3+.
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"""
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dictPrototype = dict(id=(basestring, False), names=(list, True), values=(list, True))
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if not genericDictValidator(value, dictPrototype):
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return False
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for name in value["names"]:
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if not fontInfoWOFFMetadataExtensionNameValidator(name):
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return False
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for value in value["values"]:
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if not fontInfoWOFFMetadataExtensionValueValidator(name):
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return False
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return True
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def fontInfoWOFFMetadataExtensionNameValidator(value):
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"""
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Version 3+.
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"""
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dictPrototype = {"text" : (basestring, True), "language" : (basestring, False), "dir" : (basestring, False), "class" : (basestring, False)}
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if not genericDictValidator(value, dictPrototype):
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return False
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return True
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def fontInfoWOFFMetadataExtensionValueValidator(value):
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"""
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Version 3+.
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"""
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dictPrototype = {"text" : (basestring, True), "language" : (basestring, False), "dir" : (basestring, False), "class" : (basestring, False)}
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if not genericDictValidator(value, dictPrototype):
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return False
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return True
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# ----------
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# Guidelines
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# ----------
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def guidelinesValidator(value, identifiers=None):
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"""
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Version 3+.
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"""
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if not isinstance(value, list):
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return False
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if identifiers is None:
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identifiers = set()
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for guide in value:
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if not guidelineValidator(guide):
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return False
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identifier = guide.get("identifier")
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if identifier is not None:
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if identifier in identifiers:
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return False
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identifiers.add(identifier)
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return True
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def guidelineValidator(value):
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"""
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Version 3+.
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"""
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dictPrototype = dict(
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x=((int, float), False), y=((int, float), False), angle=((int, float), False),
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name=(basestring, False), color=(basestring, False), identifier=(basestring, False)
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)
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if not genericDictValidator(value, dictPrototype):
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return False
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x = value.get("x")
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y = value.get("y")
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angle = value.get("angle")
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# x or y must be present
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if x is None and y is None:
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return False
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# if x or y are None, angle must not be present
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if x is None or y is None:
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if angle is not None:
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return False
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# if x and y are defined, angle must be defined
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if x is not None and y is not None and angle is None:
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return False
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# angle must be between 0 and 360
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if angle is not None:
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if angle < 0:
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return False
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if angle > 360:
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return False
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# identifier must be 1 or more characters
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identifier = value.get("identifier")
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if identifier is not None and not identifierValidator(identifier):
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return False
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# color must follow the proper format
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color = value.get("color")
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if color is not None and not colorValidator(color):
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return False
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return True
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# ----------
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# Identifier
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# ----------
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def identifierValidator(value):
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"""
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Version 3+.
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>>> identifierValidator("a")
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True
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>>> identifierValidator("")
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False
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>>> identifierValidator("a" * 101)
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False
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"""
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validCharactersMin = 0x20
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validCharactersMax = 0x7E
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if not isinstance(value, basestring):
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return False
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if not value:
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return False
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if len(value) > 100:
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return False
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for c in value:
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c = ord(c)
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if c < validCharactersMin or c > validCharactersMax:
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return False
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return True
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# -----
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# Color
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# -----
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def colorValidator(value):
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"""
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Version 3+.
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>>> colorValidator("0,0,0,0")
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True
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>>> colorValidator(".5,.5,.5,.5")
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True
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>>> colorValidator("0.5,0.5,0.5,0.5")
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True
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>>> colorValidator("1,1,1,1")
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True
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>>> colorValidator("2,0,0,0")
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False
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>>> colorValidator("0,2,0,0")
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False
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>>> colorValidator("0,0,2,0")
|
|
False
|
|
>>> colorValidator("0,0,0,2")
|
|
False
|
|
|
|
>>> colorValidator("1r,1,1,1")
|
|
False
|
|
>>> colorValidator("1,1g,1,1")
|
|
False
|
|
>>> colorValidator("1,1,1b,1")
|
|
False
|
|
>>> colorValidator("1,1,1,1a")
|
|
False
|
|
|
|
>>> colorValidator("1 1 1 1")
|
|
False
|
|
>>> colorValidator("1 1,1,1")
|
|
False
|
|
>>> colorValidator("1,1 1,1")
|
|
False
|
|
>>> colorValidator("1,1,1 1")
|
|
False
|
|
|
|
>>> colorValidator("1, 1, 1, 1")
|
|
True
|
|
"""
|
|
if not isinstance(value, basestring):
|
|
return False
|
|
parts = value.split(",")
|
|
if len(parts) != 4:
|
|
return False
|
|
for part in parts:
|
|
part = part.strip()
|
|
converted = False
|
|
try:
|
|
part = int(part)
|
|
converted = True
|
|
except ValueError:
|
|
pass
|
|
if not converted:
|
|
try:
|
|
part = float(part)
|
|
converted = True
|
|
except ValueError:
|
|
pass
|
|
if not converted:
|
|
return False
|
|
if part < 0:
|
|
return False
|
|
if part > 1:
|
|
return False
|
|
return True
|
|
|
|
# -----
|
|
# image
|
|
# -----
|
|
|
|
def imageValidator(value):
|
|
"""
|
|
Version 3+.
|
|
"""
|
|
dictPrototype = dict(
|
|
fileName=(basestring, True),
|
|
xScale=((int, float), False), xyScale=((int, float), False), yxScale=((int, float), False), yScale=((int, float), False),
|
|
xOffset=((int, float), False), yOffset=((int, float), False),
|
|
color=(basestring, False)
|
|
)
|
|
if not genericDictValidator(value, dictPrototype):
|
|
return False
|
|
# fileName must be one or more characters
|
|
if not value["fileName"]:
|
|
return False
|
|
# color must follow the proper format
|
|
color = value.get("color")
|
|
if color is not None and not colorValidator(color):
|
|
return False
|
|
return True
|
|
|
|
def pngValidator(path=None, data=None, fileObj=None):
|
|
"""
|
|
Version 3+.
|
|
|
|
This checks the signature of the image data.
|
|
"""
|
|
print path
|
|
assert path is not None or data is not None or fileObj is not None
|
|
if path is not None:
|
|
f = open(path, "rb")
|
|
signature = f.read(8)
|
|
f.close()
|
|
elif data is not None:
|
|
signature = data[:8]
|
|
elif fileObj is not None:
|
|
pos = fileObj.tell()
|
|
signature = fileObj.read(8)
|
|
fileObj.seek(pos)
|
|
if signature != "\x89PNG\r\n\x1a\n":
|
|
return False, "Image does not begin with the PNG signature."
|
|
return True, None
|
|
|
|
# -------------------
|
|
# layercontents.plist
|
|
# -------------------
|
|
|
|
def layerContentsValidator(value, ufoPath):
|
|
"""
|
|
Check the validity of layercontents.plist.
|
|
Version 3+.
|
|
"""
|
|
bogusFileMessage = "layercontents.plist in not in the correct format."
|
|
# file isn't in the right format
|
|
if not isinstance(value, list):
|
|
return False, bogusFileMessage
|
|
# work through each entry
|
|
usedLayerNames = set()
|
|
usedDirectories = set()
|
|
contents = {}
|
|
for entry in value:
|
|
# layer entry in the incorrect format
|
|
if not isinstance(entry, list):
|
|
return False, bogusFileMessage
|
|
if not len(entry) == 2:
|
|
return False, bogusFileMessage
|
|
for i in entry:
|
|
if not isinstance(i, basestring):
|
|
return False, bogusFileMessage
|
|
layerName, directoryName = entry
|
|
# check directory naming
|
|
if not directoryName.startswith("glyphs"):
|
|
return False, "Invalid directory name (%s) in layercontents.plist." % directoryName
|
|
if directoryName != "glyphs":
|
|
if not directoryName.startswith("glyphs."):
|
|
return False, "Invalid directory name (%s) in layercontents.plist." % directoryName
|
|
if len(layerName) == 0:
|
|
return False, "Empty layer name in layercontents.plist."
|
|
# directory doesn't exist
|
|
p = os.path.join(ufoPath, directoryName)
|
|
if not os.path.exists(p):
|
|
return False, "A glyphset does not exist at %s." % directoryName
|
|
# empty name
|
|
if not len(layerName):
|
|
return False, "A layer has an empty name."
|
|
# check usage
|
|
if layerName in usedLayerNames:
|
|
return False, "The layer name %s is used by more than one layer." % layerName
|
|
usedLayerNames.add(layerName)
|
|
if directoryName in usedDirectories:
|
|
return False, "The directory %s is used by more than one layer." % directoryName
|
|
usedDirectories.add(directoryName)
|
|
# store
|
|
contents[layerName] = directoryName
|
|
# missing default layer
|
|
foundDefault = False
|
|
for layerName, directory in contents.items():
|
|
if directory == "glyphs":
|
|
foundDefault = True
|
|
break
|
|
if not foundDefault:
|
|
return False, "The required default glyph set is not in the UFO."
|
|
return True, None
|
|
|
|
# ------------
|
|
# groups.plist
|
|
# ------------
|
|
|
|
def groupsValidator(value):
|
|
"""
|
|
Check the validity of the groups.
|
|
Version 3+ (though it's backwards compatible with UFO 1 and UFO 2).
|
|
|
|
>>> groups = {"A" : ["A", "A"], "A2" : ["A"]}
|
|
>>> groupsValidator(groups)
|
|
(True, None)
|
|
|
|
>>> groups = {"" : ["A"]}
|
|
>>> groupsValidator(groups)
|
|
(False, 'A group has an empty name.')
|
|
|
|
>>> groups = {"public.awesome" : ["A"]}
|
|
>>> groupsValidator(groups)
|
|
(True, None)
|
|
|
|
>>> groups = {"public.kern1." : ["A"]}
|
|
>>> groupsValidator(groups)
|
|
(False, 'The group data contains a kerning group with an incomplete name.')
|
|
>>> groups = {"public.kern2." : ["A"]}
|
|
>>> groupsValidator(groups)
|
|
(False, 'The group data contains a kerning group with an incomplete name.')
|
|
|
|
>>> groups = {"public.kern1.A" : ["A"], "public.kern2.A" : ["A"]}
|
|
>>> groupsValidator(groups)
|
|
(True, None)
|
|
|
|
>>> groups = {"public.kern1.A1" : ["A"], "public.kern1.A2" : ["A"]}
|
|
>>> groupsValidator(groups)
|
|
(False, 'The glyph "A" occurs in too many kerning groups.')
|
|
"""
|
|
bogusFormatMessage = "The group data is not in the correct format."
|
|
if not isinstance(value, dict):
|
|
return False, bogusFormatMessage
|
|
firstSideMapping = {}
|
|
secondSideMapping = {}
|
|
for groupName, glyphList in value.items():
|
|
if not isinstance(groupName, basestring):
|
|
return False, bogusFormatMessage
|
|
if not isinstance(glyphList, (list, tuple)):
|
|
return False, bogusFormatMessage
|
|
if not groupName:
|
|
return False, "A group has an empty name."
|
|
if groupName.startswith("public."):
|
|
if not groupName.startswith("public.kern1.") and not groupName.startswith("public.kern2."):
|
|
# unknown pubic.* name. silently skip.
|
|
continue
|
|
else:
|
|
if len("public.kernN.") == len(groupName):
|
|
return False, "The group data contains a kerning group with an incomplete name."
|
|
if groupName.startswith("public.kern1."):
|
|
d = firstSideMapping
|
|
else:
|
|
d = secondSideMapping
|
|
for glyphName in glyphList:
|
|
if not isinstance(glyphName, basestring):
|
|
return False, "The group data %s contains an invalid member." % groupName
|
|
if glyphName in d:
|
|
return False, "The glyph \"%s\" occurs in too many kerning groups." % glyphName
|
|
d[glyphName] = groupName
|
|
return True, None
|
|
|
|
# -------------
|
|
# lib.plist/lib
|
|
# -------------
|
|
|
|
def libValidator(value):
|
|
"""
|
|
Check the validity of the lib.
|
|
Version 3+ (though it's backwards compatible with UFO 1 and UFO 2).
|
|
|
|
>>> lib = {"foo" : "bar"}
|
|
>>> libValidator(lib)
|
|
(True, None)
|
|
|
|
>>> lib = {"public.awesome" : "hello"}
|
|
>>> libValidator(lib)
|
|
(True, None)
|
|
|
|
>>> lib = {"public.glyphOrder" : ["A", "C", "B"]}
|
|
>>> libValidator(lib)
|
|
(True, None)
|
|
|
|
>>> lib = {"public.glyphOrder" : "hello"}
|
|
>>> libValidator(lib)
|
|
(False, 'public.glyphOrder is not properly formatted.')
|
|
|
|
>>> lib = {"public.glyphOrder" : ["A", 1, "B"]}
|
|
>>> libValidator(lib)
|
|
(False, 'public.glyphOrder is not properly formatted.')
|
|
"""
|
|
bogusFormatMessage = "The lib data is not in the correct format."
|
|
if not isinstance(value, dict):
|
|
return False, bogusFormatMessage
|
|
for key, value in value.items():
|
|
if not isinstance(key, basestring):
|
|
return False, bogusFormatMessage
|
|
# public.glyphOrder
|
|
if key == "public.glyphOrder":
|
|
bogusGlyphOrderMessage = "public.glyphOrder is not properly formatted."
|
|
if not isinstance(value, (list, tuple)):
|
|
return False, bogusGlyphOrderMessage
|
|
for glyphName in value:
|
|
if not isinstance(glyphName, basestring):
|
|
return False, bogusGlyphOrderMessage
|
|
return True, None
|
|
|
|
if __name__ == "__main__":
|
|
import doctest
|
|
doctest.testmod()
|