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#!/usr/bin/env python3
__doc__ = '''Checks a UFO for the presence of glyphs that represent the
Recommended characters for Non-Roman fonts and warns if any are missing.
https://scriptsource.org/entry/gg5wm9hhd3'''
__url__ = 'https://github.com/silnrsi/pysilfont'
__copyright__ = 'Copyright (c) 2018 SIL International (https://www.sil.org)'
__license__ = 'Released under the MIT License (https://opensource.org/licenses/MIT)'
__author__ = 'Victor Gaultney'
from silfont.core import execute
from silfont.util import required_chars
argspec = [
('ifont',{'help': 'Input font file'}, {'type': 'infont'}),
('-r', '--rtl', {'help': 'Also include characters just for RTL scripts', 'action': 'store_true'}, {}),
('-s', '--silpua', {'help': 'Also include characters in SIL PUA block', 'action': 'store_true'}, {}),
('-l','--log',{'help': 'Log file'}, {'type': 'outfile', 'def': '_checkbasicchars.log'})]
def doit(args) :
font = args.ifont
logger = args.logger
rationales = {
"A": "in Codepage 1252",
"B": "in MacRoman",
"C": "for publishing",
"D": "for Non-Roman fonts and publishing",
"E": "by Google Fonts",
"F": "by TeX for visible space",
"G": "for encoding conversion utilities",
"H": "in case Variation Sequences are defined in future",
"I": "to detect byte order",
"J": "to render combining marks in isolation",
"K": "to view sidebearings for every glyph using these characters"}
charsets = ["basic"]
if args.rtl: charsets.append("rtl")
if args.silpua: charsets.append("sil")
req_chars = required_chars(charsets)
glyphlist = font.deflayer.keys()
for glyphn in glyphlist :
glyph = font.deflayer[glyphn]
if len(glyph["unicode"]) == 1 :
unival = glyph["unicode"][0].hex
if unival in req_chars:
del req_chars[unival]
cnt = len(req_chars)
if cnt > 0:
for usv in sorted(req_chars.keys()):
item = req_chars[usv]
psname = item["ps_name"]
gname = item["glyph_name"]
name = psname if psname == gname else psname + ", " + gname
logger.log("U+" + usv + " from the " + item["sil_set"] +
" set has no representative glyph (" + name + ")", "W")
logger.log("Rationale: This character is needed " + rationales[item["rationale"]], "I")
if item["notes"]:
logger.log(item["notes"], "I")
logger.log("There are " + str(cnt) + " required characters missing", "E")
return
def cmd() : execute("UFO",doit,argspec)
if __name__ == "__main__": cmd()
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