1from __future__ import print_function, division, absolute_import 2from fontTools.misc.py23 import * 3from fontTools.misc import sstruct 4from fontTools.misc.textTools import safeEval 5from . import DefaultTable 6 7GMAPFormat = """ 8 > # big endian 9 tableVersionMajor: H 10 tableVersionMinor: H 11 flags: H 12 recordsCount: H 13 recordsOffset: H 14 fontNameLength: H 15""" 16# psFontName is a byte string which follows the record above. This is zero padded 17# to the beginning of the records array. The recordsOffsst is 32 bit aligned. 18 19GMAPRecordFormat1 = """ 20 > # big endian 21 UV: L 22 cid: H 23 gid: H 24 ggid: H 25 name: 32s 26""" 27 28 29class GMAPRecord(object): 30 def __init__(self, uv=0, cid=0, gid=0, ggid=0, name=""): 31 self.UV = uv 32 self.cid = cid 33 self.gid = gid 34 self.ggid = ggid 35 self.name = name 36 37 def toXML(self, writer, ttFont): 38 writer.begintag("GMAPRecord") 39 writer.newline() 40 writer.simpletag("UV", value=self.UV) 41 writer.newline() 42 writer.simpletag("cid", value=self.cid) 43 writer.newline() 44 writer.simpletag("gid", value=self.gid) 45 writer.newline() 46 writer.simpletag("glyphletGid", value=self.gid) 47 writer.newline() 48 writer.simpletag("GlyphletName", value=self.name) 49 writer.newline() 50 writer.endtag("GMAPRecord") 51 writer.newline() 52 53 def fromXML(self, name, attrs, content, ttFont): 54 value = attrs["value"] 55 if name == "GlyphletName": 56 self.name = value 57 else: 58 setattr(self, name, safeEval(value)) 59 60 def compile(self, ttFont): 61 if self.UV is None: 62 self.UV = 0 63 nameLen = len(self.name) 64 if nameLen < 32: 65 self.name = self.name + "\0"*(32 - nameLen) 66 data = sstruct.pack(GMAPRecordFormat1, self) 67 return data 68 69 def __repr__(self): 70 return "GMAPRecord[ UV: " + str(self.UV) + ", cid: " + str(self.cid) + ", gid: " + str(self.gid) + ", ggid: " + str(self.ggid) + ", Glyphlet Name: " + str(self.name) + " ]" 71 72 73class table_G_M_A_P_(DefaultTable.DefaultTable): 74 75 dependencies = [] 76 77 def decompile(self, data, ttFont): 78 dummy, newData = sstruct.unpack2(GMAPFormat, data, self) 79 self.psFontName = tostr(newData[:self.fontNameLength]) 80 assert (self.recordsOffset % 4) == 0, "GMAP error: recordsOffset is not 32 bit aligned." 81 newData = data[self.recordsOffset:] 82 self.gmapRecords = [] 83 for i in range (self.recordsCount): 84 gmapRecord, newData = sstruct.unpack2(GMAPRecordFormat1, newData, GMAPRecord()) 85 gmapRecord.name = gmapRecord.name.strip('\0') 86 self.gmapRecords.append(gmapRecord) 87 88 def compile(self, ttFont): 89 self.recordsCount = len(self.gmapRecords) 90 self.fontNameLength = len(self.psFontName) 91 self.recordsOffset = 4 * (((self.fontNameLength + 12) + 3) // 4) 92 data = sstruct.pack(GMAPFormat, self) 93 data = data + tobytes(self.psFontName) 94 data = data + b"\0" * (self.recordsOffset - len(data)) 95 for record in self.gmapRecords: 96 data = data + record.compile(ttFont) 97 return data 98 99 def toXML(self, writer, ttFont): 100 writer.comment("Most of this table will be recalculated by the compiler") 101 writer.newline() 102 formatstring, names, fixes = sstruct.getformat(GMAPFormat) 103 for name in names: 104 value = getattr(self, name) 105 writer.simpletag(name, value=value) 106 writer.newline() 107 writer.simpletag("PSFontName", value=self.psFontName) 108 writer.newline() 109 for gmapRecord in self.gmapRecords: 110 gmapRecord.toXML(writer, ttFont) 111 112 def fromXML(self, name, attrs, content, ttFont): 113 if name == "GMAPRecord": 114 if not hasattr(self, "gmapRecords"): 115 self.gmapRecords = [] 116 gmapRecord = GMAPRecord() 117 self.gmapRecords.append(gmapRecord) 118 for element in content: 119 if isinstance(element, basestring): 120 continue 121 name, attrs, content = element 122 gmapRecord.fromXML(name, attrs, content, ttFont) 123 else: 124 value = attrs["value"] 125 if name == "PSFontName": 126 self.psFontName = value 127 else: 128 setattr(self, name, safeEval(value)) 129