mirror of
https://github.com/rsms/inter.git
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607 lines
18 KiB
Python
Executable File
607 lines
18 KiB
Python
Executable File
#!/usr/bin/env python
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# encoding: utf8
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#
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# Generates JSON-encoded information about fonts
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#
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import os, sys
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from os.path import dirname, basename, abspath, relpath, join as pjoin
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sys.path.append(abspath(pjoin(dirname(__file__), 'tools')))
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import common # for the side effeects
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import argparse
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import json
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import re
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from base64 import b64encode
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from fontTools import ttLib
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from fontTools.misc import sstruct
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from fontTools.ttLib.tables._h_e_a_d import headFormat
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from fontTools.ttLib.tables._h_h_e_a import hheaFormat
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from fontTools.ttLib.tables._m_a_x_p import maxpFormat_0_5, maxpFormat_1_0_add
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from fontTools.ttLib.tables._p_o_s_t import postFormat
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from fontTools.ttLib.tables.O_S_2f_2 import OS2_format_1, OS2_format_2, OS2_format_5, panoseFormat
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from fontTools.ttLib.tables._m_e_t_a import table__m_e_t_a
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# from robofab.world import world, RFont, RGlyph, OpenFont, NewFont
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# from robofab.objects.objectsRF import RFont, RGlyph, OpenFont, NewFont, RContour
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_NAME_IDS = {}
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panoseWeights = [
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'Any', # 0
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'No Fit', # 1
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'Very Light', # 2
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'Light', # 3
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'Thin', # 4
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'Book', # 5
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'Medium', # 6
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'Demi', # 7
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'Bold', # 8
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'Heavy', # 9
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'Black', # 10
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'Extra Black', # 11
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]
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panoseProportion = [
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'Any', # 0
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'No fit', # 1
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'Old Style/Regular', # 2
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'Modern', # 3
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'Even Width', # 4
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'Extended', # 5
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'Condensed', # 6
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'Very Extended', # 7
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'Very Condensed', # 8
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'Monospaced', # 9
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]
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os2WidthClass = [
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None,
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'Ultra-condensed', # 1
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'Extra-condensed', # 2
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'Condensed', # 3
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'Semi-condensed', # 4
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'Medium (normal)', # 5
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'Semi-expanded', # 6
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'Expanded', # 7
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'Extra-expanded', # 8
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'Ultra-expanded', # 9
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]
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os2WeightClass = {
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100: 'Thin',
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200: 'Extra-light (Ultra-light)',
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300: 'Light',
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400: 'Normal (Regular)',
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500: 'Medium',
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600: 'Semi-bold (Demi-bold)',
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700: 'Bold',
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800: 'Extra-bold (Ultra-bold)',
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900: 'Black (Heavy)',
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}
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def tableNamesToDict(table, names):
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t = {}
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for name in names:
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if name.find('reserved') == 0:
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continue
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t[name] = getattr(table, name)
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return t
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def sstructTableToDict(table, format):
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_, names, _ = sstruct.getformat(format)
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return tableNamesToDict(table, names)
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OUTPUT_TYPE_COMPLETE = 'complete'
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OUTPUT_TYPE_GLYPHLIST = 'glyphlist'
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GLYPHS_TYPE_UNKNOWN = '?'
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GLYPHS_TYPE_TT = 'tt'
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GLYPHS_TYPE_CFF = 'cff'
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def getGlyphsType(tt):
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if 'CFF ' in tt:
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return GLYPHS_TYPE_CFF
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elif 'glyf' in tt:
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return GLYPHS_TYPE_TT
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return GLYPHS_TYPE_UNKNOWN
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class GlyphInfo:
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def __init__(self, g, name, unicodes, type, glyphTable):
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self._type = type # GLYPHS_TYPE_*
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self._glyphTable = glyphTable
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self.name = name
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self.width = g.width
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self.lsb = g.lsb
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self.unicodes = unicodes
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if g.height is not None:
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self.tsb = g.tsb
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self.height = g.height
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else:
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self.tsb = 0
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self.height = 0
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self.numContours = 0
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self.contoursBBox = (0,0,0,0) # xMin, yMin, xMax, yMax
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self.hasHints = False
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if self._type is GLYPHS_TYPE_CFF:
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self._addCFFInfo()
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elif self._type is GLYPHS_TYPE_TT:
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self._addTTInfo()
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def _addTTInfo(self):
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g = self._glyphTable[self.name]
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self.numContours = g.numberOfContours
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if g.numberOfContours:
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self.contoursBBox = (g.xMin,g.xMin,g.xMax,g.yMax)
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self.hasHints = hasattr(g, "program")
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def _addCFFInfo(self):
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# TODO: parse CFF dict tree
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pass
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@classmethod
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def structKeys(cls, type):
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v = [
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'name',
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'unicodes',
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'width',
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'lsb',
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'height',
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'tsb',
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'hasHints',
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]
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if type is GLYPHS_TYPE_TT:
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v += (
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'numContours',
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'contoursBBox',
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)
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return v
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def structValues(self):
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v = [
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self.name,
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self.unicodes,
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self.width,
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self.lsb,
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self.height,
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self.tsb,
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self.hasHints,
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]
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if self._type is GLYPHS_TYPE_TT:
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v += (
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self.numContours,
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self.contoursBBox,
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)
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return v
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# exported convenience function
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def GenGlyphList(font, withGlyphs=None):
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if isinstance(font, str):
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font = ttLib.TTFont(font)
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return genGlyphsInfo(font, OUTPUT_TYPE_GLYPHLIST)
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def genGlyphsInfo(tt, outputType, glyphsType=GLYPHS_TYPE_UNKNOWN, glyphsTable=None, withGlyphs=None):
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unicodeMap = {}
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glyphnameFilter = None
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if isinstance(withGlyphs, str):
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glyphnameFilter = withGlyphs.split(',')
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if 'cmap' in tt:
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# https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6cmap.html
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bestCodeSubTable = None
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bestCodeSubTableFormat = 0
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for st in tt['cmap'].tables:
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if st.platformID == 0: # 0=unicode, 1=mac, 2=(reserved), 3=microsoft
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if st.format > bestCodeSubTableFormat:
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bestCodeSubTable = st
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bestCodeSubTableFormat = st.format
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for cp, glyphname in bestCodeSubTable.cmap.items():
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if glyphname in unicodeMap:
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unicodeMap[glyphname].append(cp)
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else:
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unicodeMap[glyphname] = [cp]
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glyphValues = []
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glyphnames = tt.getGlyphOrder() if glyphnameFilter is None else glyphnameFilter
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if outputType is OUTPUT_TYPE_GLYPHLIST:
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glyphValues = []
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for glyphname in glyphnames:
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v = [glyphname]
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if glyphname in unicodeMap:
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v += unicodeMap[glyphname]
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glyphValues.append(v)
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return glyphValues
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glyphset = tt.getGlyphSet(preferCFF=glyphsType is GLYPHS_TYPE_CFF)
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for glyphname in glyphnames:
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unicodes = unicodeMap[glyphname] if glyphname in unicodeMap else []
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try:
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g = glyphset[glyphname]
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except KeyError:
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raise Exception('no such glyph "'+glyphname+'"')
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gi = GlyphInfo(g, glyphname, unicodes, glyphsType, glyphsTable)
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glyphValues.append(gi.structValues())
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return {
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'keys': GlyphInfo.structKeys(glyphsType),
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'values': glyphValues,
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}
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def copyDictEntry(srcD, srcName, dstD, dstName):
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try:
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dstD[dstName] = srcD[srcName]
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except:
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pass
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def addCFFFontInfo(tt, info, cffTable):
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d = cffTable.rawDict
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nameDict = None
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if 'name' not in info:
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nameDict = {}
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info['name'] = nameDict
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else:
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nameDict = info['name']
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copyDictEntry(d, 'Weight', nameDict, 'weight')
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copyDictEntry(d, 'version', nameDict, 'version')
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def genFontInfo(fontpath, outputType, withGlyphs=True):
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tt = ttLib.TTFont(fontpath) # lazy=True
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info = {
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'id': fontpath,
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}
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# for tableName in tt.keys():
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# print('table', tableName)
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nameDict = {}
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if 'name' in tt:
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nameDict = {}
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for rec in tt['name'].names:
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k = _NAME_IDS[rec.nameID] if rec.nameID in _NAME_IDS else ('#%d' % rec.nameID)
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nameDict[k] = rec.toUnicode()
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if 'fontId' in nameDict:
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info['id'] = nameDict['fontId']
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if 'postscriptName' in nameDict:
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info['name'] = nameDict['postscriptName']
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elif 'familyName' in nameDict:
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info['name'] = nameDict['familyName'].replace(' ', '')
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if 'subfamilyName' in nameDict:
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info['name'] += '-' + nameDict['subfamilyName'].replace(' ', '')
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if 'version' in nameDict:
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version = nameDict['version']
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v = re.split(r'[\s;]+', version)
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if v and len(v) > 0:
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version = v[0]
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if version.lower() == 'version':
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version = v[1]
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version = '.'.join([str(int(v)) for v in version.split('.')])
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info['version'] = version
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if outputType is not OUTPUT_TYPE_GLYPHLIST:
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if len(nameDict):
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info['names'] = nameDict
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if 'head' in tt:
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NOSET = '%d: SHOULD NOT BE SET'
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head = sstructTableToDict(tt['head'], headFormat)
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if 'macStyle' in head:
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s = []
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v = head['macStyle']
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if isinstance(v, int): # uint16
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if v & 0b0000000000000001: s.append('0: Bold')
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if v & 0b0000000000000010: s.append('1: Italic')
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if v & 0b0000000000000100: s.append('2: Underline')
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if v & 0b0000000000001000: s.append('3: Outline')
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if v & 0b0000000000010000: s.append('4: Shadow')
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if v & 0b0000000000100000: s.append('5: Condensed')
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if v & 0b0000000001000000: s.append('6: Extended')
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# Bits 7–15: Reserved (set to 0)
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if v & 0b0000000010000000: s.append(NOSET % 7)
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if v & 0b0000000100000000: s.append(NOSET % 8)
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if v & 0b0000001000000000: s.append(NOSET % 9)
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if v & 0b0000010000000000: s.append(NOSET % 10)
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if v & 0b0000100000000000: s.append(NOSET % 11)
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if v & 0b0001000000000000: s.append(NOSET % 12)
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if v & 0b0010000000000000: s.append(NOSET % 13)
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if v & 0b0100000000000000: s.append(NOSET % 14)
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if v & 0b1000000000000000: s.append(NOSET % 15)
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head['macStyle_raw'] = head['macStyle']
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head['macStyle'] = s
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v = head['flags'] # uint16
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if isinstance(v, int):
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# https://docs.microsoft.com/en-us/typography/opentype/spec/head
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s = []
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if v & 0b0000000000000001: s.append('0: Baseline at y=0')
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if v & 0b0000000000000010: s.append('1: Left sidebearing point at x=0')
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if v & 0b0000000000000100: s.append('2: Instructions may depend on point size')
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if v & 0b0000000000001000: s.append('3: Force ppem to integer values')
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if v & 0b0000000000010000: s.append('4: Instructions may alter advance width')
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# Bit 5: This bit is not used in OpenType, and should not be set in order to ensure
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# compatible behavior on all platforms. If set, it may result in different behavior
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# for vertical layout in some platforms. (See Apple’s specification for details
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# regarding behavior in Apple platforms.)
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if v & 0b0000000000100000: s.append(NOSET % 5)
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# Bits 6–10 are not used in Opentype and should always be cleared
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if v & 0b0000000001000000: s.append(NOSET % 6)
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if v & 0b0000000010000000: s.append(NOSET % 7)
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if v & 0b0000000100000000: s.append(NOSET % 8)
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if v & 0b0000001000000000: s.append(NOSET % 9)
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if v & 0b0000010000000000: s.append(NOSET % 10)
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if v & 0b0000100000000000: s.append('11: Losslessly optimized')
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if v & 0b0001000000000000: s.append('12: Converted')
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if v & 0b0010000000000000: s.append('13: Optimized for ClearType')
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if v & 0b0100000000000000: s.append('14: Last Resort font')
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# Bit 15 is reserved
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if v & 0b1000000000000000: s.append(NOSET % 15)
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head['flags_raw'] = head['flags']
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head['flags'] = s
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info['head'] = head
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if 'hhea' in tt:
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info['hhea'] = sstructTableToDict(tt['hhea'], hheaFormat)
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if 'post' in tt:
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info['post'] = sstructTableToDict(tt['post'], postFormat)
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if 'OS/2' in tt:
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t = tt['OS/2']
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os2 = None
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if t.version == 1:
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os2 = sstructTableToDict(t, OS2_format_1)
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elif t.version in (2, 3, 4):
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os2 = sstructTableToDict(t, OS2_format_2)
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elif t.version == 5:
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os2 = sstructTableToDict(t, OS2_format_5)
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os2['usLowerOpticalPointSize'] /= 20
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os2['usUpperOpticalPointSize'] /= 20
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if 'panose' in os2:
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panose = {}
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for k,v in sstructTableToDict(os2['panose'], panoseFormat).items():
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if k[0:1] == 'b' and k[1].isupper():
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k = k[1].lower() + k[2:]
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# bFooBar => fooBar
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if k == 'weight' and isinstance(v, int) and v < len(panoseWeights):
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panose['weightName'] = panoseWeights[v]
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elif k == 'proportion' and isinstance(v, int) and v < len(panoseProportion):
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panose['proportionName'] = panoseProportion[v]
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panose[k] = v
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os2['panose'] = panose
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if 'usWidthClass' in os2:
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v = os2['usWidthClass']
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if isinstance(v, int) and v > 0 and v < len(os2WidthClass):
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os2['usWidthClassName'] = os2WidthClass[v]
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if 'usWeightClass' in os2:
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v = os2['usWeightClass']
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name = os2WeightClass.get(os2['usWeightClass'])
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if name:
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os2['usWeightClassName'] = name
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fsType = os2.get('fsType')
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if fsType is not None:
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obj = {"raw":fsType}
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# Usage permissions: 0x000F
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perm = fsType & 0x000F
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perms = ""
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if perm == 0:
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perms = "Freely installable & embeddable"
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elif perm == 2:
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perms = "Restricted License embedding"
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elif perm == 4:
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perms = "Preview & Print embedding"
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elif perm == 8:
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perms = "Editable embedding"
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else:
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perms = "<INVALID VALUE %r>" % perm
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obj['perm'] = '0x%04X: %s' % (perm, perms)
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obj['no_subset'] = "no" if fsType & 0x0100 == 0 else "yes"
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obj['bitmap_embed_only'] = "no" if fsType & 0x0200 == 0 else "yes"
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os2['fsType'] = obj
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fsSelection = os2.get('fsSelection')
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if fsSelection is not None:
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# https://docs.microsoft.com/en-us/typography/opentype/spec/os2#fsselection
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# Bit macStyle bit Symbolic name
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# 0 1 ITALIC
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# 1 UNDERSCORE
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# 2 NEGATIVE
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# 3 OUTLINED
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# 4 STRIKEOUT
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# 5 0 BOLD
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# 6 REGULAR
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# 7 USE_TYPO_METRICS
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# 8 WWS
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# 9 OBLIQUE
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# 10-15 <reserved>
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s = []
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if fsSelection & 0b0000000000000001: s.append('0: ITALIC')
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if fsSelection & 0b0000000000000010: s.append('1: UNDERSCORE')
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if fsSelection & 0b0000000000000100: s.append('2: NEGATIVE')
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if fsSelection & 0b0000000000001000: s.append('3: OUTLINED')
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if fsSelection & 0b0000000000010000: s.append('4: STRIKEOUT')
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if fsSelection & 0b0000000000100000: s.append('5: BOLD')
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if fsSelection & 0b0000000010000000: s.append('6: REGULAR')
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if fsSelection & 0b0000000100000000: s.append('7: USE_TYPO_METRICS')
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if fsSelection & 0b0000001000000000: s.append('8: WWS')
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if fsSelection & 0b0000010000000000: s.append('9: OBLIQUE')
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os2['fsSelection_raw'] = fsSelection
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os2['fsSelection'] = s
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info['OS/2'] = os2
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if 'meta' in tt:
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meta = {}
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for k,v in tt['meta'].data.items():
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try:
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v.decode('utf8')
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meta[k] = v
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except:
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meta[k] = 'data:;base64,' + b64encode(v)
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info['meta'] = meta
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# rest of tables
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for tname in tt.keys():
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if tname not in info:
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info[tname] = "[present but not decoded]"
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# if 'maxp' in tt:
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# table = tt['maxp']
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# _, names, _ = sstruct.getformat(maxpFormat_0_5)
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# if table.tableVersion != 0x00005000:
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# _, names_1_0, _ = sstruct.getformat(maxpFormat_1_0_add)
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# names += names_1_0
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# info['maxp'] = tableNamesToDict(table, names)
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glyphsType = getGlyphsType(tt)
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glyphsTable = None
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if glyphsType is GLYPHS_TYPE_CFF:
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cff = tt["CFF "].cff
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cffDictIndex = cff.topDictIndex
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if len(cffDictIndex) > 1:
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sys.stderr.write(
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'warning: multi-font CFF table is unsupported. Only reporting first table.\n'
|
||
)
|
||
cffTable = cffDictIndex[0]
|
||
if outputType is not OUTPUT_TYPE_GLYPHLIST:
|
||
addCFFFontInfo(tt, info, cffTable)
|
||
elif glyphsType is GLYPHS_TYPE_TT:
|
||
glyphsTable = tt["glyf"]
|
||
# print('glyphs type:', glyphsType, 'flavor:', tt.flavor, 'sfntVersion:', tt.sfntVersion)
|
||
|
||
if (withGlyphs != False or outputType is OUTPUT_TYPE_GLYPHLIST) and withGlyphs != '':
|
||
info['glyphs'] = genGlyphsInfo(tt, outputType, glyphsType, glyphsTable, withGlyphs)
|
||
|
||
# sys.exit(1)
|
||
|
||
return info
|
||
|
||
|
||
# ————————————————————————————————————————————————————————————————————————
|
||
# main
|
||
|
||
def main():
|
||
argparser = argparse.ArgumentParser(description='Generate JSON describing fonts')
|
||
|
||
argparser.add_argument('-out', dest='outfile', metavar='<file>', type=str,
|
||
help='Write JSON to <file>. Writes to stdout if not specified')
|
||
|
||
argparser.add_argument('-pretty', dest='prettyJson', action='store_const',
|
||
const=True, default=False,
|
||
help='Generate pretty JSON with linebreaks and indentation')
|
||
|
||
argparser.add_argument('-with-all-glyphs', dest='withGlyphs', action='store_const',
|
||
const=True, default=False,
|
||
help='Include glyph information on all glyphs.')
|
||
|
||
argparser.add_argument('-with-glyphs', dest='withGlyphs', metavar='glyphname[,glyphname ...]',
|
||
type=str,
|
||
help='Include glyph information on specific glyphs')
|
||
|
||
argparser.add_argument('-as-glyphlist', dest='asGlyphList',
|
||
action='store_const', const=True, default=False,
|
||
help='Only generate a list of glyphs and their unicode mappings.')
|
||
|
||
argparser.add_argument('fontpaths', metavar='<path>', type=str, nargs='+',
|
||
help='TrueType or OpenType font files')
|
||
|
||
args = argparser.parse_args()
|
||
|
||
fonts = []
|
||
outputType = OUTPUT_TYPE_COMPLETE
|
||
if args.asGlyphList:
|
||
outputType = OUTPUT_TYPE_GLYPHLIST
|
||
|
||
n = 0
|
||
for fontpath in args.fontpaths:
|
||
if n > 0:
|
||
# workaround for a bug in fontTools.misc.sstruct where it keeps a global
|
||
# internal cache that mixes up values for different fonts.
|
||
reload(sstruct)
|
||
font = genFontInfo(fontpath, outputType=outputType, withGlyphs=args.withGlyphs)
|
||
fonts.append(font)
|
||
n += 1
|
||
|
||
ostream = sys.stdout
|
||
if args.outfile is not None:
|
||
ostream = open(args.outfile, 'w')
|
||
|
||
|
||
if args.prettyJson:
|
||
json.dump(fonts, ostream, sort_keys=True, indent=2, separators=(',', ': '))
|
||
sys.stdout.write('\n')
|
||
else:
|
||
json.dump(fonts, ostream, separators=(',', ':'))
|
||
|
||
|
||
if ostream is not sys.stdout:
|
||
ostream.close()
|
||
|
||
|
||
|
||
# "name" table name identifiers
|
||
_NAME_IDS = {
|
||
# TrueType & OpenType
|
||
0: 'copyright',
|
||
1: 'familyName',
|
||
2: 'subfamilyName',
|
||
3: 'fontId',
|
||
4: 'fullName',
|
||
5: 'version', # e.g. 'Version <number>.<number>'
|
||
6: 'postscriptName',
|
||
7: 'trademark',
|
||
8: 'manufacturerName',
|
||
9: 'designer',
|
||
10: 'description',
|
||
11: 'vendorURL',
|
||
12: 'designerURL',
|
||
13: 'licenseDescription',
|
||
14: 'licenseURL',
|
||
15: 'RESERVED',
|
||
16: 'typoFamilyName',
|
||
17: 'typoSubfamilyName',
|
||
18: 'macCompatibleFullName', # Mac only (FOND)
|
||
19: 'sampleText',
|
||
|
||
# OpenType
|
||
20: 'postScriptCIDName',
|
||
21: 'wwsFamilyName',
|
||
22: 'wwsSubfamilyName',
|
||
23: 'lightBackgoundPalette',
|
||
24: 'darkBackgoundPalette',
|
||
25: 'variationsPostScriptNamePrefix',
|
||
|
||
# 26-255: Reserved for future expansion
|
||
# 256-32767: Font-specific names (layout features and settings, variations, track names, etc.)
|
||
}
|
||
|
||
if __name__ == '__main__':
|
||
main()
|