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#!/usr/bin/env python3
'Compare two fonts based on specified criteria and report differences'
__url__ = 'https://github.com/silnrsi/pysilfont'
__copyright__ = 'Copyright (c) 2015 SIL International (https://www.sil.org)'
__license__ = 'Released under the MIT License (https://opensource.org/licenses/MIT)'
__author__ = 'David Raymond'
from silfont.core import execute
argspec = [
('ifont',{'help': 'Input font file'}, {'type': 'infont'}),
('ifont2',{'help': 'Input font file 2'}, {'type': 'infont', 'def': 'new'}),
('-l','--log',{'help': 'Log file'}, {'type': 'outfile', 'def': 'compareFonts.log'}),
('-o','--options',{'help': 'Options', 'choices': ['c'], 'nargs': '*'}, {})
]
def doit(args) :
font1=args.ifont
font2=args.ifont2
logf = args.log
options = args.options
logf.write("Comparing fonts: \n %s (%s)\n %s (%s)\n" % (font1.path,font1.fontname,font2.path,font2.fontname))
if options != None : logf.write('with options: %s\n' % (options))
logf.write("\n")
compare(font1,font2,logf,options)
compare(font2,font1,logf,None) # Compare again the other way around, just looking for missing Glyphs
logf.close()
return
def compare(fonta,fontb,logf,options) :
for glyph in fonta :
if glyph in fontb :
if options != None : # Do extra checks based on options supplied
ga=fonta[glyph]
gb=fontb[glyph]
for opt in options :
if opt == "c" :
if len(ga.references) != len(gb.references) :
logf.write("Glyph %s: number of components is different - %s v %s\n" % (glyph,len(ga.references),len(gb.references)))
else :
logf.write("Glyph %s missing from %s\n" % (glyph,fonta.path))
def cmd() : execute("FF",doit,argspec)
if __name__ == "__main__": cmd()
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