mirror of
https://github.com/daylinmorgan/monolisa-nerdfont-patch.git
synced 2024-11-13 18:07:52 -06:00
419 lines
17 KiB
Python
419 lines
17 KiB
Python
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#!/usr/bin/env python
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# coding=utf8
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import re
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from FontnameTools import FontnameTools
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class FontnameParser:
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"""Parse a font name and generate all kinds of names"""
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def __init__(self, filename, logger):
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"""Parse a font filename and store the results"""
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self.parse_ok = False
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self.use_short_families = (
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False,
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False,
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False,
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) # ( camelcase name, short styles, aggressive )
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self.keep_regular_in_family = None # None = auto, True, False
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self.suppress_preferred_if_identical = True
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self.family_suff = ""
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self.ps_fontname_suff = ""
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self.short_family_suff = ""
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self.name_subst = []
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[
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self.parse_ok,
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self._basename,
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self.weight_token,
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self.style_token,
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self.other_token,
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self._rest,
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] = FontnameTools.parse_font_name(filename)
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self.basename = self._basename
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self.rest = self._rest
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self.add_name_substitution_table(FontnameTools.SIL_TABLE)
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self.rename_oblique = True
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self.logger = logger
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def _make_ps_name(self, n, is_family):
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"""Helper to limit font name length in PS names"""
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fam = "family " if is_family else ""
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limit = 31 if is_family else 63
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if len(n) <= limit:
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return n
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r = re.search("(.*)(-.*)", n)
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if not r:
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new_n = n[:limit]
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else:
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q = limit - len(r.groups()[1])
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if q < 1:
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q = 1
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self.logger.error(
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"====-< Shortening too long PS {}name: Garbage warning".format(fam)
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)
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new_n = r.groups()[0][:q] + r.groups()[1]
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if new_n != n:
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self.logger.error(
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"====-< Shortening too long PS {}name: {} -> {}".format(fam, n, new_n)
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)
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return new_n
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def _shortened_name(self):
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"""Return a blank free basename-rest combination"""
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if not self.use_short_families[0]:
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return (self.basename, self.rest)
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else:
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return (FontnameTools.concat(self.basename, self.rest).replace(" ", ""), "")
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def set_keep_regular_in_family(self, keep):
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"""Familyname may contain 'Regular' where it should normally be suppressed"""
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self.keep_regular_in_family = keep
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def set_expect_no_italic(self, noitalic):
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"""Prevents rewriting Oblique as family name part"""
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# To prevent naming clashes usually Oblique is moved out in the family name
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# because some fonts have Italic and Oblique, and we want to generate pure
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# RIBBI families in ID1/2.
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# But some fonts have Oblique instead of Italic, here the prevential movement
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# is not needed, or rather contraproductive. This can not be detected on a
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# font file level but needs to be specified per family from the outside.
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# Returns true if setting was successful.
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if "Italic" in self.style_token:
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self.rename_oblique = True
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return not noitalic
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self.rename_oblique = not noitalic
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return True
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def set_suppress_preferred(self, suppress):
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"""Suppress ID16/17 if it is identical to ID1/2 (True is default)"""
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self.suppress_preferred_if_identical = suppress
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def inject_suffix(self, family, ps_fontname, short_family):
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"""Add a custom additonal string that shows up in the resulting names"""
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self.family_suff = family.strip()
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self.ps_fontname_suff = ps_fontname.replace(" ", "")
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self.short_family_suff = short_family.strip()
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return self
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def enable_short_families(self, camelcase_name, prefix, aggressive):
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"""Enable short styles in Family when (original) font name starts with prefix; enable CamelCase basename in (Typog.) Family"""
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# camelcase_name is boolean
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# prefix is either a string or False/True
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if isinstance(prefix, str):
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prefix = self._basename.startswith(prefix)
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self.use_short_families = (camelcase_name, prefix, aggressive)
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return self
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def add_name_substitution_table(self, table):
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"""Have some fonts renamed, takes list of tuples (regex, replacement)"""
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# The regex will be anchored to name begin and used case insensitive
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# Replacement can have regex matches, mind to catch the correct source case
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self.name_subst = table
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self.basename = self._basename
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self.rest = self._rest
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for regex, replacement in self.name_subst:
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base_and_rest = self.basename + (" " + self.rest if len(self.rest) else "")
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m = re.match(regex, base_and_rest, re.IGNORECASE)
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if not m:
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continue
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i = len(self.basename) - len(m.group(0))
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if i < 0:
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self.basename = m.expand(replacement).rstrip()
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self.rest = self.rest[-(i + 1) :].lstrip()
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else:
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self.basename = m.expand(replacement) + self.basename[len(m.group(0)) :]
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return self
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def drop_for_powerline(self):
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"""Remove 'for Powerline' from all names (can not be undone)"""
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if "Powerline" in self.other_token:
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idx = self.other_token.index("Powerline")
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self.other_token.pop(idx)
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if idx > 0 and self.other_token[idx - 1] == "For":
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self.other_token.pop(idx - 1)
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self._basename = re.sub(
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r"(\b|for\s?)?powerline\b", "", self._basename, 1, re.IGNORECASE
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).strip()
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self.add_name_substitution_table(self.name_subst) # re-evaluate
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return self
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### Following the creation of the name parts:
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#
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# Relevant websites
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# https://www.fonttutorials.com/how-to-name-font-family/
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# https://docs.microsoft.com/en-us/typography/opentype/spec/name#name-ids
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# https://docs.microsoft.com/en-us/typography/opentype/spec/os2#fss
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# https://docs.microsoft.com/en-us/typography/opentype/spec/head#macstyle
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# Example (mind that they group 'semibold' as classic-group-of-4 Bold, while we will always only take bold as Bold):
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# Adobe Caslon Pro Regular ID1: Adobe Caslon Pro ID2: Regular
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# Adobe Caslon Pro Italic ID1: Adobe Caslon Pro ID2: Italic
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# Adobe Caslon Pro Semibold ID1: Adobe Caslon Pro ID2: Bold ID16: Adobe Caslon Pro ID17: Semibold
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# Adobe Caslon Pro Semibold Italic ID1: Adobe Caslon Pro ID2: Bold Italic ID16: Adobe Caslon Pro ID17: Semibold Italic
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# Adobe Caslon Pro Bold ID1: Adobe Caslon Pro Bold ID2: Regular ID16: Adobe Caslon Pro ID17: Bold
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# Adobe Caslon Pro Bold Italic ID1: Adobe Caslon Pro Bold ID2: Italic ID16: Adobe Caslon Pro ID17: Bold Italic
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# fontname === preferred_family + preferred_styles
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# fontname === family + subfamily
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#
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# familybase = basename + rest + other (+ suffix)
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# ID 1/2 just have self.style in the subfamily, all the rest ends up in the family
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# ID 16/17 have self.style and self.weight in the subfamily, the rest ends up in the family
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def fullname(self):
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"""Get the SFNT Fullname (ID 4)"""
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styles = self.style_token
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weights = self.weight_token
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if self.keep_regular_in_family == None:
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keep_regular = FontnameTools.is_keep_regular(
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self._basename + " " + self._rest
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)
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else:
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keep_regular = self.keep_regular_in_family
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if "Regular" in styles and (
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not keep_regular or len(self.weight_token) > 0
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): # This is actually a malformed font name
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styles = list(self.style_token)
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styles.remove("Regular")
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# For naming purposes we want Oblique to be part of the styles
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(weights, styles) = FontnameTools.make_oblique_style(weights, styles)
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(name, rest) = self._shortened_name()
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if self.use_short_families[1]:
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[weights, styles] = FontnameTools.short_styles(
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[weights, styles], self.use_short_families[2]
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)
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return FontnameTools.concat(
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name, rest, self.other_token, self.short_family_suff, weights, styles
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)
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def psname(self):
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"""Get the SFNT PostScriptName (ID 6)"""
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# This is almost self.family() + '-' + self.subfamily()
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(name, rest) = self._shortened_name()
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styles = self.style_token
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weights = self.weight_token
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if self.use_short_families[1]:
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styles = FontnameTools.short_styles(styles, self.use_short_families[2])
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weights = FontnameTools.short_styles(weights, self.use_short_families[2])
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fam = FontnameTools.camel_casify(
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FontnameTools.concat(name, rest, self.other_token, self.ps_fontname_suff)
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)
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sub = FontnameTools.camel_casify(FontnameTools.concat(weights, styles))
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if len(sub) > 0:
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sub = "-" + sub
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fam = FontnameTools.postscript_char_filter(fam)
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sub = FontnameTools.postscript_char_filter(sub)
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return self._make_ps_name(fam + sub, False)
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def preferred_family(self):
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"""Get the SFNT Preferred Familyname (ID 16)"""
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(name, rest) = self._shortened_name()
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pfn = FontnameTools.concat(name, rest, self.other_token, self.family_suff)
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if self.suppress_preferred_if_identical and pfn == self.family():
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# Do not set if identical to ID 1
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return ""
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return pfn
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def preferred_styles(self):
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"""Get the SFNT Preferred Styles (ID 17)"""
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styles = self.style_token
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weights = self.weight_token
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# For naming purposes we want Oblique to be part of the styles
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(weights, styles) = FontnameTools.make_oblique_style(weights, styles)
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pfs = FontnameTools.concat(weights, styles)
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if self.suppress_preferred_if_identical and pfs == self.subfamily():
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# Do not set if identical to ID 2
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return ""
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return pfs
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def family(self):
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"""Get the SFNT Familyname (ID 1)"""
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# We use the short form of the styles to save on number of chars
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(name, rest) = self._shortened_name()
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other = self.other_token
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weights = self.weight_token
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aggressive = self.use_short_families[2]
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if not self.rename_oblique:
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(weights, styles) = FontnameTools.make_oblique_style(weights, [])
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if self.use_short_families[1]:
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[other, weights] = FontnameTools.short_styles([other, weights], aggressive)
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weights = [w if w != "Oblique" else "Obl" for w in weights]
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return FontnameTools.concat(name, rest, other, self.short_family_suff, weights)
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def subfamily(self):
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"""Get the SFNT SubFamily (ID 2)"""
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styles = self.style_token
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weights = self.weight_token
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if not self.rename_oblique:
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(weights, styles) = FontnameTools.make_oblique_style(weights, styles)
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if len(styles) == 0:
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if "Oblique" in weights:
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return FontnameTools.concat(styles, "Italic")
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return "Regular"
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if "Oblique" in weights and not "Italic" in styles:
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return FontnameTools.concat(styles, "Italic")
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return FontnameTools.concat(styles)
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def ps_familyname(self):
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"""Get the PS Familyname"""
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fam = self.preferred_family()
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if len(fam) < 1:
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fam = self.family()
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return self._make_ps_name(fam, True)
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def macstyle(self, style):
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"""Modify a given macStyle value for current name, just bits 0 and 1 touched"""
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b = style & (~3)
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b |= 1 if "Bold" in self.style_token else 0
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b |= 2 if "Italic" in self.style_token else 0
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return b
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def fs_selection(self, fs):
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"""Modify a given fsSelection value for current name, bits 0, 5, 6, 8, 9 touched"""
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ITALIC = 1 << 0
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BOLD = 1 << 5
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REGULAR = 1 << 6
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WWS = 1 << 8
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OBLIQUE = 1 << 9
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b = fs & (~(ITALIC | BOLD | REGULAR | WWS | OBLIQUE))
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if "Bold" in self.style_token:
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b |= BOLD
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# Ignore Italic if we have Oblique
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if "Oblique" in self.weight_token:
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b |= OBLIQUE
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elif "Italic" in self.style_token:
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b |= ITALIC
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# Regular is just the basic weight
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if len(self.weight_token) == 0:
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b |= REGULAR
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b |= WWS # We assert this by our naming process
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return b
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def checklen(self, max_len, entry_id, name):
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"""Check the length of a name string and report violations"""
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if len(name) <= max_len:
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self.logger.debug(
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"=====> {:18} ok ({:2} <={:2}): {}".format(
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entry_id, len(name), max_len, name
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)
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)
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else:
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self.logger.error(
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"====-< {:18} too long ({:2} > {:2}): {}".format(
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entry_id, len(name), max_len, name
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)
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)
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return name
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def rename_font(self, font):
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"""Rename the font to include all information we found (font is fontforge font object)"""
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font.fondname = None
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font.fontname = self.psname()
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font.fullname = self.fullname()
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font.familyname = self.ps_familyname()
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# We have to work around several issues in fontforge:
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#
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# a. Remove some entries from SFNT table; fontforge has no API function for that
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#
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# b. Fontforge does not allow to set SubFamily (and other) to any value:
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#
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# Fontforge lets you set any value, unless it is the default value. If it
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# is the default value it does not set anything. It also does not remove
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# a previously existing non-default value. Why it is done this way is
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# unclear:
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# fontforge/python.c SetSFNTName() line 11431
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# return( 1 ); /* If they set it to the default, there's nothing to do */
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#
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# Then is the question: What is the default? It is taken from the
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# currently set fontname (??!). The fontname is parsed and everything
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# behind the dash is the default SubFamily:
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# fontforge/tottf.c DefaultTTFEnglishNames()
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# fontforge/splinefont.c _GetModifiers()
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|
#
|
||
|
|
# To fix this without touching Fontforge we need to set the SubFamily
|
||
|
|
# directly in the SFNT table:
|
||
|
|
#
|
||
|
|
# c. Fontforge has the bug that it allows to write empty-string to a SFNT field
|
||
|
|
# and it is actually embedded as empty string, but empty strings are not
|
||
|
|
# shown if you query the sfnt_names *rolleyes*
|
||
|
|
|
||
|
|
version_tag = ""
|
||
|
|
sfnt_list = []
|
||
|
|
TO_DEL = [
|
||
|
|
"Family",
|
||
|
|
"SubFamily",
|
||
|
|
"Fullname",
|
||
|
|
"PostScriptName",
|
||
|
|
"Preferred Family",
|
||
|
|
"Preferred Styles",
|
||
|
|
"Compatible Full",
|
||
|
|
"WWS Family",
|
||
|
|
"WWS Subfamily",
|
||
|
|
"UniqueID",
|
||
|
|
"CID findfont Name",
|
||
|
|
]
|
||
|
|
# Remove these entries in all languages and add (at least the vital ones) some
|
||
|
|
# back, but only as 'English (US)'. This makes sure we do not leave contradicting
|
||
|
|
# names over different languages.
|
||
|
|
for l, k, v in list(font.sfnt_names):
|
||
|
|
if not k in TO_DEL:
|
||
|
|
sfnt_list += [(l, k, v)]
|
||
|
|
if k == "Version" and l == "English (US)":
|
||
|
|
version_tag = " " + v.split()[-1]
|
||
|
|
|
||
|
|
sfnt_list += [
|
||
|
|
(
|
||
|
|
"English (US)",
|
||
|
|
"Family",
|
||
|
|
self.checklen(31, "Family (ID 1)", self.family()),
|
||
|
|
)
|
||
|
|
] # 1
|
||
|
|
sfnt_list += [
|
||
|
|
(
|
||
|
|
"English (US)",
|
||
|
|
"SubFamily",
|
||
|
|
self.checklen(31, "SubFamily (ID 2)", self.subfamily()),
|
||
|
|
)
|
||
|
|
] # 2
|
||
|
|
sfnt_list += [("English (US)", "UniqueID", self.fullname() + version_tag)] # 3
|
||
|
|
sfnt_list += [
|
||
|
|
(
|
||
|
|
"English (US)",
|
||
|
|
"Fullname",
|
||
|
|
self.checklen(63, "Fullname (ID 4)", self.fullname()),
|
||
|
|
)
|
||
|
|
] # 4
|
||
|
|
sfnt_list += [
|
||
|
|
(
|
||
|
|
"English (US)",
|
||
|
|
"PostScriptName",
|
||
|
|
self.checklen(63, "PSN (ID 6)", self.psname()),
|
||
|
|
)
|
||
|
|
] # 6
|
||
|
|
|
||
|
|
p_fam = self.preferred_family()
|
||
|
|
if len(p_fam):
|
||
|
|
sfnt_list += [
|
||
|
|
(
|
||
|
|
"English (US)",
|
||
|
|
"Preferred Family",
|
||
|
|
self.checklen(31, "PrefFamily (ID 16)", p_fam),
|
||
|
|
)
|
||
|
|
] # 16
|
||
|
|
p_sty = self.preferred_styles()
|
||
|
|
if len(p_sty):
|
||
|
|
sfnt_list += [
|
||
|
|
(
|
||
|
|
"English (US)",
|
||
|
|
"Preferred Styles",
|
||
|
|
self.checklen(31, "PrefStyles (ID 17)", p_sty),
|
||
|
|
)
|
||
|
|
] # 17
|
||
|
|
|
||
|
|
font.sfnt_names = tuple(sfnt_list)
|
||
|
|
|
||
|
|
font.macstyle = self.macstyle(0)
|
||
|
|
font.os2_stylemap = self.fs_selection(0)
|