def packSFNT(header,
directory,
tableData,
flavor="cff",
calcCheckSum=True,
applyPadding=True,
sortDirectory=True,
searchRange=None,
entrySelector=None,
rangeShift=None):
# update the checkSum
if calcCheckSum:
if flavor == "cff":
f = "OTTO"
else:
f = "\000\001\000\000"
calcHeadCheckSumAdjustmentSFNT(directory, tableData, flavor=f)
# update the header
cSearchRange, cEntrySelector, cRangeShift = getSearchRange(
len(directory), 16)
if searchRange is None:
searchRange = cSearchRange
if entrySelector is None:
entrySelector = cEntrySelector
if rangeShift is None:
rangeShift = cRangeShift
if flavor == "cff":
header["sfntVersion"] = "OTTO"
else:
header["sfntVersion"] = "\000\001\000\000"
header["searchRange"] = searchRange
header["entrySelector"] = entrySelector
header["rangeShift"] = rangeShift
# version and num tables should already be set
sfntData = sstruct.pack(sfntDirectoryFormat, header)
# compile the directory
sfntDirectoryEntries = {}
entryOrder = []
for entry in directory:
sfntEntry = SFNTDirectoryEntry()
sfntEntry.tag = entry["tag"]
sfntEntry.checkSum = entry["checksum"]
sfntEntry.offset = entry["offset"]
sfntEntry.length = entry["length"]
sfntDirectoryEntries[entry["tag"]] = sfntEntry
entryOrder.append(entry["tag"])
if sortDirectory:
entryOrder = sorted(entryOrder)
for tag in entryOrder:
entry = sfntDirectoryEntries[tag]
sfntData += entry.toString()
# compile the data
directory = [(entry["offset"], entry["tag"]) for entry in directory]
for o, tag in sorted(directory):
data = tableData[tag]
if applyPadding:
data = padData(data)
sfntData += data
# done
return sfntData
def packTestTableData(directory, tableData, calcCheckSum=True):
if calcCheckSum:
calcHeadCheckSumAdjustment(directory, tableData)
orderedData = []
for entry in directory:
tag = entry["tag"]
origData, compData = tableData[tag]
compData = padData(compData)
orderedData.append(compData)
return "".join(orderedData)
def packSFNT(header, directory, tableData, flavor="cff",
calcCheckSum=True, applyPadding=True, sortDirectory=True,
searchRange=None, entrySelector=None, rangeShift=None):
# update the checkSum
if calcCheckSum:
if flavor == "cff":
f = "OTTO"
else:
f = "\000\001\000\000"
calcHeadCheckSumAdjustmentSFNT(directory, tableData, flavor=f)
# update the header
cSearchRange, cEntrySelector, cRangeShift = getSearchRange(len(directory), 16)
if searchRange is None:
searchRange = cSearchRange
if entrySelector is None:
entrySelector = cEntrySelector
if rangeShift is None:
rangeShift = cRangeShift
if flavor == "cff":
header["sfntVersion"] = "OTTO"
else:
header["sfntVersion"] = "\000\001\000\000"
header["searchRange"] = searchRange
header["entrySelector"] = entrySelector
header["rangeShift"] = rangeShift
# version and num tables should already be set
sfntData = sstruct.pack(sfntDirectoryFormat, header)
# compile the directory
sfntDirectoryEntries = {}
entryOrder = []
for entry in directory:
sfntEntry = SFNTDirectoryEntry()
sfntEntry.tag = entry["tag"]
sfntEntry.checkSum = entry["checksum"]
sfntEntry.offset = entry["offset"]
sfntEntry.length = entry["length"]
sfntDirectoryEntries[entry["tag"]] = sfntEntry
entryOrder.append(entry["tag"])
if sortDirectory:
entryOrder = sorted(entryOrder)
for tag in entryOrder:
entry = sfntDirectoryEntries[tag]
sfntData += entry.toString()
# compile the data
directory = [(entry["offset"], entry["tag"]) for entry in directory]
for o, tag in sorted(directory):
data = tableData[tag]
if applyPadding:
data = padData(data)
sfntData += data
# done
return sfntData
if tag in transformedTables:
transformed = True
if transformFlag == 3:
transformed = False
else:
transformed = transformFlag != 0
if transformed and not skipTransformLength:
data += packBase128(table["transformLength"], bug=Base128Bug)
return data
def packTestCollectionHeader(header):
return struct.pack(">L", header["version"]) + pack255UInt16(header["numFonts"])
def packTestCollectionDirectory(directory):
data = ""
for entry in directory:
data += pack255UInt16(entry["numTables"])
data += struct.pack(">4s", entry["flavor"])
for i in entry["index"]:
data += pack255UInt16(entry["index"][i])
return data
def packTestMetadata((origMetadata, compMetadata), havePrivateData=False):
if havePrivateData:
compMetadata = padData(compMetadata)
return compMetadata
def packTestPrivateData(privateData):
return privateData
def getSFNTCollectionData(pathOrFiles, modifyNames=True, reverseNames=False, DSIG=False, duplicates=[], shared=[]):
tables = []
offsets = {}
fonts = [TTFont(pathOrFile) for pathOrFile in pathOrFiles]
numFonts = len(fonts)
header = dict(
TTCTag="ttcf",
Version=0x00010000,
numFonts=numFonts,
)
if DSIG:
header["version"] = 0x00020000
fontData = sstruct.pack(ttcHeaderFormat, header)
offset = ttcHeaderSize + (numFonts * struct.calcsize(">L"))
if DSIG:
offset += 3 * struct.calcsize(">L")
for font in fonts:
fontData += struct.pack(">L", offset)
tags = [i for i in sorted(font.keys()) if len(i) == 4]
offset += sfntDirectorySize + (len(tags) * sfntDirectoryEntrySize)
if DSIG:
data = "\0" * 4
tables.append(data)
offset += len(data)
fontData += struct.pack(">4s", "DSIG")
fontData += struct.pack(">L", len(data))
fontData += struct.pack(">L", offset)
for i, font in enumerate(fonts):
# Make the name table unique
if modifyNames:
index = i
if reverseNames:
index = len(fonts) - i - 1
name = font["name"]
for namerecord in name.names:
nameID = namerecord.nameID
string = namerecord.toUnicode()
if nameID == 1:
namerecord.string = "%s %d" % (string, index)
elif nameID == 4:
namerecord.string = string.replace("Regular", "%d Regular" % index)
elif nameID == 6:
namerecord.string = string.replace("-", "%d-" % index)
tags = [i for i in sorted(font.keys()) if len(i) == 4]
searchRange, entrySelector, rangeShift = getSearchRange(len(tags), 16)
offsetTable = dict(
sfntVersion=font.sfntVersion,
numTables=len(tags),
searchRange=searchRange,
entrySelector=entrySelector,
rangeShift=rangeShift,
)
fontData += sstruct.pack(sfntDirectoryFormat, offsetTable)
for tag in tags:
data = font.getTableData(tag)
checksum = calcTableChecksum(tag, data)
entry = dict(
tag=tag,
offset=offset,
length=len(data),
checkSum=checksum,
)
if (shared and tag not in shared) or tag in duplicates or data not in tables:
tables.append(data)
offsets[checksum] = offset
offset += len(data) + calcPaddingLength(len(data))
else:
entry["offset"] = offsets[checksum]
fontData += sstruct.pack(sfntDirectoryEntryFormat, entry)
for table in tables:
fontData += padData(table)
for font in fonts:
font.close()
return fontData
def getWOFFCollectionData(pathOrFiles, MismatchGlyfLoca=False, reverseNames=False):
from defaultData import defaultTestData
tableChecksums = []
tableData = []
tableOrder = []
collectionDirectory = []
locaIndices = []
fonts = [TTFont(pathOrFile) for pathOrFile in pathOrFiles]
for i, font in enumerate(fonts):
index = i
if reverseNames:
index = len(fonts) - i - 1
# Make the name table unique
name = font["name"]
for namerecord in name.names:
nameID = namerecord.nameID
string = namerecord.toUnicode()
if nameID == 1:
namerecord.string = "%s %d" % (string, index)
elif nameID == 4:
namerecord.string = string.replace("Regular", "%d Regular" % index)
elif nameID == 6:
namerecord.string = string.replace("-", "%d-" % index)
tags = [i for i in sorted(font.keys()) if len(i) == 4]
if "glyf" in tags:
glyf = tags.index("glyf")
loca = tags.index("loca")
tags.insert(glyf + 1, tags.pop(loca))
tableIndices = OrderedDict()
for tag in tags:
data = transformTable(font, tag)
if MismatchGlyfLoca and tag in ("glyf", "loca"):
tableData.append([tag, data])
tableChecksums.append([tag, font.reader.tables[tag].checkSum])
tableOrder.append(tag)
tableIndex = len(tableData) - 1
tableIndices[tag] = tableIndex
if tag == "loca":
locaIndices.append(tableIndex)
else:
if [tag, data] not in tableData:
tableData.append([tag, data])
tableChecksums.append([tag, font.reader.tables[tag].checkSum])
tableOrder.append(tag)
tableIndices[tag] = tableData.index([tag, data])
collectionDirectory.append(dict(numTables=len(tableIndices), flavor=font.sfntVersion, index=tableIndices))
font.close()
del font
if MismatchGlyfLoca:
locaIndices.reverse()
for i, entry in enumerate(collectionDirectory):
entry["index"]["loca"] = locaIndices[i]
totalData = "".join([data[1][1] for data in tableData])
compData = brotli.compress(totalData, brotli.MODE_FONT)
if len(compData) >= len(totalData):
compData = totalData
directory = [dict(tag=tag, origLength=0, transformLength=0, transformFlag=0) for tag in tableOrder]
header, directory, collectionHeader, collectionDirectory, tableData = defaultTestData(directory=directory,
tableData=tableData, compressedData=compData, collectionDirectory=collectionDirectory)
data = packTestHeader(header)
data += packTestDirectory(directory, isCollection=True)
data += packTestCollectionHeader(collectionHeader)
data += packTestCollectionDirectory(collectionDirectory)
data += tableData
data = padData(data)
return data
def getSFNTCollectionData(pathOrFiles,
modifyNames=True,
reverseNames=False,
duplicates=[]):
tables = []
offsets = {}
fonts = [TTFont(pathOrFile) for pathOrFile in pathOrFiles]
numFonts = len(fonts)
header = dict(
TTCTag="ttcf",
Version=0x00010000,
numFonts=numFonts,
)
fontData = sstruct.pack(ttcHeaderFormat, header)
offset = ttcHeaderSize + (numFonts * struct.calcsize(">L"))
for font in fonts:
fontData += struct.pack(">L", offset)
tags = [i for i in sorted(font.keys()) if len(i) == 4]
offset += sfntDirectorySize + (len(tags) * sfntDirectoryEntrySize)
for i, font in enumerate(fonts):
# Make the name table unique
if modifyNames:
index = i
if reverseNames:
index = len(fonts) - i - 1
name = font["name"]
for namerecord in name.names:
nameID = namerecord.nameID
string = namerecord.toUnicode()
if nameID == 1:
namerecord.string = "%s %d" % (string, index)
elif nameID == 4:
namerecord.string = string.replace("Regular",
"%d Regular" % index)
elif nameID == 6:
namerecord.string = string.replace("-", "%d-" % index)
tags = [i for i in sorted(font.keys()) if len(i) == 4]
searchRange, entrySelector, rangeShift = getSearchRange(len(tags), 16)
offsetTable = dict(
sfntVersion=font.sfntVersion,
numTables=len(tags),
searchRange=searchRange,
entrySelector=entrySelector,
rangeShift=rangeShift,
)
fontData += sstruct.pack(sfntDirectoryFormat, offsetTable)
for tag in tags:
data = font.getTableData(tag)
checksum = font.reader.tables[tag].checkSum
entry = dict(
tag=tag,
offset=offset,
length=len(data),
checkSum=checksum,
)
if tag in duplicates or data not in tables:
tables.append(data)
offsets[checksum] = offset
offset += len(data) + calcPaddingLength(len(data))
else:
entry["offset"] = offsets[checksum]
fontData += sstruct.pack(sfntDirectoryEntryFormat, entry)
for table in tables:
fontData += padData(table)
for font in fonts:
font.close()
return fontData
def getWOFFCollectionData(pathOrFiles, MismatchGlyfLoca=False):
from defaultData import defaultTestData
tableChecksums = []
tableData = []
tableOrder = []
collectionDirectory = []
locaIndices = []
for i, pathOrFile in enumerate(pathOrFiles):
font = TTFont(pathOrFile)
# Make the name table unique
name = font["name"]
for namerecord in name.names:
nameID = namerecord.nameID
string = namerecord.toUnicode()
if nameID == 1:
namerecord.string = "%s %d" % (string, i)
elif nameID == 4:
namerecord.string = string.replace("Regular", "%d Regular" % i)
elif nameID == 6:
namerecord.string = string.replace("-", "%d-" % i)
tags = [i for i in sorted(font.keys()) if len(i) == 4]
if "glyf" in tags:
glyf = tags.index("glyf")
loca = tags.index("loca")
tags.insert(glyf + 1, tags.pop(loca))
tableIndices = OrderedDict()
for tag in tags:
data = transformTable(font, tag)
if MismatchGlyfLoca and tag in ("glyf", "loca"):
tableData.append([tag, data])
tableChecksums.append([tag, font.reader.tables[tag].checkSum])
tableOrder.append(tag)
tableIndex = len(tableData) - 1
tableIndices[tag] = tableIndex
if tag == "loca":
locaIndices.append(tableIndex)
else:
if [tag, data] not in tableData:
tableData.append([tag, data])
tableChecksums.append(
[tag, font.reader.tables[tag].checkSum])
tableOrder.append(tag)
tableIndices[tag] = tableData.index([tag, data])
collectionDirectory.append(
dict(numTables=len(tableIndices),
flavor=font.sfntVersion,
index=tableIndices))
font.close()
del font
if MismatchGlyfLoca:
locaIndices.reverse()
for i, entry in enumerate(collectionDirectory):
entry["index"]["loca"] = locaIndices[i]
totalData = "".join([data[1][1] for data in tableData])
compData = brotli.compress(totalData, brotli.MODE_FONT)
if len(compData) >= len(totalData):
compData = totalData
directory = [
dict(tag=tag, origLength=0, transformLength=0) for tag in tableOrder
]
header, directory, collectionHeader, collectionDirectory, tableData = defaultTestData(
directory=directory,
tableData=tableData,
compressedData=compData,
collectionDirectory=collectionDirectory)
data = packTestHeader(header)
data += packTestDirectory(directory, isCollection=True)
data += packTestCollectionHeader(collectionHeader)
data += packTestCollectionDirectory(collectionDirectory)
data += tableData
data = padData(data)
return data
for tag, table in directory:
if tag in knownTableTags:
data += struct.pack(">B", knownTableTags.index(tag))
else:
data += struct.pack(">B", unknownTableTagFlag)
data += struct.pack(">4s", tag)
data += packBase128(table["origLength"], bug=Base128Bug)
if tag in transformedTables:
data += packBase128(table["transformLength"], bug=Base128Bug)
return data
def packTestCollectionHeader(header):
return struct.pack(">L", header["version"]) + pack255UInt16(header["numFonts"])
def packTestCollectionDirectory(directory):
data = ""
for entry in directory:
data += pack255UInt16(entry["numTables"])
data += struct.pack(">4s", entry["flavor"])
for i in entry["index"]:
data += pack255UInt16(entry["index"][i])
return data
def packTestMetadata((origMetadata, compMetadata), havePrivateData=False):
if havePrivateData:
compMetadata = padData(compMetadata)
return compMetadata
def packTestPrivateData(privateData):
return privateData
