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https://github.com/rsms/inter.git
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392 lines
11 KiB
Python
Executable File
392 lines
11 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
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import sys
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import argparse
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import json
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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
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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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def num(s):
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return int(s) if s.find('.') == -1 else float(s)
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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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glyphset = tt.getGlyphSet(preferCFF=glyphsType is GLYPHS_TYPE_CFF)
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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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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 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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info['head'] = sstructTableToDict(tt['head'], headFormat)
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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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if t.version == 1:
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info['os/2'] = sstructTableToDict(t, OS2_format_1)
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elif t.version in (2, 3, 4):
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info['os/2'] = sstructTableToDict(t, OS2_format_2)
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elif t.version == 5:
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info['os/2'] = sstructTableToDict(t, OS2_format_5)
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info['os/2']['usLowerOpticalPointSize'] /= 20
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info['os/2']['usUpperOpticalPointSize'] /= 20
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if 'panose' in info['os/2']:
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del info['os/2']['panose']
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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'
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)
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cffTable = cffDictIndex[0]
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if outputType is not OUTPUT_TYPE_GLYPHLIST:
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addCFFFontInfo(tt, info, cffTable)
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elif glyphsType is GLYPHS_TYPE_TT:
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glyphsTable = tt["glyf"]
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# print 'glyphs type:', glyphsType, 'flavor:', tt.flavor, 'sfntVersion:', tt.sfntVersion
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if (withGlyphs is not False or outputType is OUTPUT_TYPE_GLYPHLIST) and withGlyphs is not '':
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info['glyphs'] = genGlyphsInfo(tt, outputType, glyphsType, glyphsTable, withGlyphs)
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# sys.exit(1)
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return info
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# ————————————————————————————————————————————————————————————————————————
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# main
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def main():
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argparser = argparse.ArgumentParser(description='Generate JSON describing fonts')
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argparser.add_argument('-out', dest='outfile', metavar='<file>', type=str,
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help='Write JSON to <file>. Writes to stdout if not specified')
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argparser.add_argument('-pretty', dest='prettyJson', action='store_const',
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const=True, default=False,
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help='Generate pretty JSON with linebreaks and indentation')
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argparser.add_argument('-with-all-glyphs', dest='withGlyphs', action='store_const',
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const=True, default=False,
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help='Include glyph information on all glyphs.')
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argparser.add_argument('-with-glyphs', dest='withGlyphs', metavar='glyphname[,glyphname ...]',
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type=str,
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help='Include glyph information on specific glyphs')
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argparser.add_argument('-as-glyphlist', dest='asGlyphList',
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action='store_const', const=True, default=False,
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help='Only generate a list of glyphs and their unicode mappings.')
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argparser.add_argument('fontpaths', metavar='<path>', type=str, nargs='+',
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help='TrueType or OpenType font files')
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args = argparser.parse_args()
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fonts = {}
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outputType = OUTPUT_TYPE_COMPLETE
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if args.asGlyphList:
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outputType = OUTPUT_TYPE_GLYPHLIST
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n = 0
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for fontpath in args.fontpaths:
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if n > 0:
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# workaround for a bug in fontTools.misc.sstruct where it keeps a global
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# internal cache that mixes up values for different fonts.
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reload(sstruct)
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font = genFontInfo(fontpath, outputType=outputType, withGlyphs=args.withGlyphs)
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fonts[font['id']] = font
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n += 1
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ostream = sys.stdout
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if args.outfile is not None:
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ostream = open(args.outfile, 'w')
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if args.prettyJson:
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json.dump(fonts, ostream, sort_keys=True, indent=2, separators=(',', ': '))
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else:
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json.dump(fonts, ostream, separators=(',', ':'))
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if ostream is not sys.stdout:
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ostream.close()
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# "name" table name identifiers
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_NAME_IDS = {
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# TrueType & OpenType
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0: 'copyright',
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1: 'familyName',
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2: 'subfamilyName',
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3: 'fontId',
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4: 'fullName',
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5: 'version', # e.g. 'Version <number>.<number>'
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6: 'postscriptName',
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7: 'trademark',
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8: 'manufacturerName',
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9: 'designer',
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10: 'description',
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11: 'vendorURL',
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12: 'designerURL',
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13: 'licenseDescription',
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14: 'licenseURL',
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15: 'RESERVED',
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16: 'typoFamilyName',
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17: 'typoSubfamilyName',
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18: 'macCompatibleFullName', # Mac only (FOND)
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19: 'sampleText',
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# OpenType
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20: 'postScriptCIDName',
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21: 'wwsFamilyName',
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22: 'wwsSubfamilyName',
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23: 'lightBackgoundPalette',
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24: 'darkBackgoundPalette',
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25: 'variationsPostScriptNamePrefix',
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# 26-255: Reserved for future expansion
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# 256-32767: Font-specific names (layout features and settings, variations, track names, etc.)
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}
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if __name__ == '__main__':
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main()
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