mirror of
https://github.com/ryanoasis/nerd-fonts.git
synced 2024-12-19 20:12:52 +02:00
435 lines
18 KiB
Python
435 lines
18 KiB
Python
#!/usr/bin/env python
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# coding=utf8
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import re
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import sys
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class FontnameTools:
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"""Deconstruct a fontname to get standardized name parts"""
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@staticmethod
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def front_upper(word):
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"""Capitalize a string (but keep case of subsequent chars)"""
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return word[:1].upper() + word[1:]
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@staticmethod
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def camel_casify(word):
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"""Remove blanks and use CamelCase for the new word"""
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return ''.join(map(FontnameTools.front_upper, word.split(' ')))
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@staticmethod
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def camel_explode(word):
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"""Explode CamelCase -> Camel Case"""
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# But do not explode "JetBrains" etc at string start...
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excludes = [
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'JetBrains',
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'DejaVu',
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'OpenDyslexicAlta',
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'OpenDyslexicMono',
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'OpenDyslexic',
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'DaddyTimeMono',
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'InconsolataGo',
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'ProFontWindows',
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'ProFont',
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'ProggyClean',
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]
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m = re.match('(' + '|'.join(excludes) + ')(.*)', word)
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(prefix, word) = m.group(1,2) if m != None else ('', word)
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if len(word) == 0:
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return prefix
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parts = re.split('(?<=[a-z0-9])(?=[A-Z])', word)
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if len(prefix):
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parts.insert(0, prefix)
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return ' '.join(parts)
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@staticmethod
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def drop_empty(l):
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"""Remove empty strings from list of strings"""
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return [x for x in l if len(x) > 0]
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@staticmethod
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def concat(*all_things):
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"""Flatten list of (strings or lists of strings) to a blank-separated string"""
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all = []
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for thing in all_things:
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if type(thing) is not list:
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all.append(thing)
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else:
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all += thing
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return ' '.join(FontnameTools.drop_empty(all))
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@staticmethod
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def unify_style_names(style_name):
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"""Substitude some known token with standard wording"""
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known_names = {
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# Source of the table is the current sourcefonts
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# Left side needs to be lower case
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'book': '',
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'ce': 'CE',
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'normal': 'Regular',
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}
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return known_names.get(style_name.lower(), style_name)
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@staticmethod
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def find_in_dicts(key, dicts):
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"""Find an entry in a list of dicts, return entry and in which list it was"""
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for i, d in enumerate(dicts):
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if key in d:
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return ( d[key], i )
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return (None, 0)
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@staticmethod
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def get_shorten_form_idx(aggressive, prefix, form_if_prefixed):
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"""Get the tuple index of known_* data tables"""
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if aggressive:
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return 0
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if len(prefix):
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return form_if_prefixed
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return 1
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@staticmethod
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def shorten_style_name(name, aggressive):
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"""Substitude some known styles to short form"""
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# If aggressive is False create the mild short form
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# aggressive == True: Always use first form of everything
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# aggressive == False:
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# - has no modifier: use the second form
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# - has modifier: use second form of mod plus first form of weights2
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# - has modifier: use second form of mod plus second form of widths
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name_rest = name
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name_pre = ''
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form = FontnameTools.get_shorten_form_idx(aggressive, '', 0)
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for mod in FontnameTools.known_modifiers:
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if name.startswith(mod) and len(name) > len(mod): # Second condition specifically for 'Demi'
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name_pre = FontnameTools.known_modifiers[mod][form]
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name_rest = name[len(mod):]
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break
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subst, i = FontnameTools.find_in_dicts(name_rest, [ FontnameTools.known_weights2, FontnameTools.known_widths ])
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form = FontnameTools.get_shorten_form_idx(aggressive, name_pre, i)
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if isinstance(subst, tuple):
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return name_pre + subst[form]
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if not len(name_pre):
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# The following sets do not allow modifiers
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subst, _ = FontnameTools.find_in_dicts(name_rest, [ FontnameTools.known_weights1, FontnameTools.known_slopes ])
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if isinstance(subst, tuple):
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return subst[form]
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return name
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@staticmethod
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def short_styles(lists, aggressive):
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"""Shorten all style names in a list or a list of lists"""
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if not len(lists) or not isinstance(lists[0], list):
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return list(map(lambda x: FontnameTools.shorten_style_name(x, aggressive), lists))
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return [ list(map(lambda x: FontnameTools.shorten_style_name(x, aggressive), styles)) for styles in lists ]
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@staticmethod
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def make_oblique_style(weights, styles):
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"""Move "Oblique" from weights to styles for font naming purposes"""
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if 'Oblique' in weights:
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weights = list(weights)
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weights.remove('Oblique')
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styles = list(styles)
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styles.append('Oblique')
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return (weights, styles)
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@staticmethod
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def get_name_token(name, tokens):
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"""Try to find any case insensitive token from tokens in the name, return tuple with found token-list and rest"""
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# The default mode (allow_regex_token = False) will try to find any verbatim string in the
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# tokens list (case insensitive matching) and give that tokens list item back with
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# unchanged case (i.e. [ 'Bold' ] will match "bold" and return it as [ 'Bold', ]
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# In the regex mode (allow_regex_token = True) it will use the tokens elements as
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# regexes and return the original (i.e. from name) case.
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#
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# Token are always used in a regex and may not capture, use non capturing
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# grouping if needed (?: ... )
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lower_tokens = [ t.lower() for t in tokens ]
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not_matched = ""
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all_tokens = []
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j = 1
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token_regex = '|'.join(tokens)
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# Allow a dash between CamelCase token word parts, i.e. Camel-Case
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# This allows for styles like Extra-Bold
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token_regex = re.sub(r'(?<=[a-z])(?=[A-Z])', '-?', token_regex)
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regex = re.compile('(.*?)(' + token_regex + ')(.*)', re.IGNORECASE)
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while j:
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j = regex.match(name)
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if not j:
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break
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if len(j.groups()) != 3:
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sys.exit('Malformed regex in FontnameTools.get_name_token()')
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not_matched += ' ' + j.groups()[0] # Blanc prevents unwanted concatenation of unmatched substrings
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tok = j.groups()[1].lower()
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tok = tok.replace('-', '') # Remove dashes between CamelCase token words
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if tok in lower_tokens:
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tok = tokens[lower_tokens.index(tok)]
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tok = FontnameTools.unify_style_names(tok)
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if len(tok):
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all_tokens.append(tok)
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name = j.groups()[2] # Recurse rest
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not_matched += ' ' + name
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return ( not_matched.strip(), all_tokens )
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@staticmethod
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def postscript_char_filter(name):
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"""Filter out characters that are not allowed in Postscript names"""
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# The name string must be restricted to the printable ASCII subset, codes 33 to 126,
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# except for the 10 characters '[', ']', '(', ')', '{', '}', '<', '>', '/', '%'
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out = ''
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for c in name:
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if c in '[](){}<>/%' or ord(c) < 33 or ord(c) > 126:
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continue
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out += c
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return out
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SIL_TABLE = [
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( '(a)nka/(c)oder', r'\1na\2onder' ),
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( '(a)nonymous', r'\1nonymice' ),
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( '(b)itstream( ?)(v)era( ?sans ?mono)?', r'\1itstrom\2Wera' ),
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( '(c)ascadia( ?)(c)ode', r'\1askaydia\2\3ove' ),
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( '(c)ascadia( ?)(m)ono', r'\1askaydia\2\3ono' ),
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( 'Gohufont', r'GohuFont'), # Correct to CamelCase
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( '(h)ermit', r'\1urmit' ),
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( '(h)asklig', r'\1asklug' ),
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( 'iA([- ]?)writer', r'iM\1Writing' ),
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( 'IBM[- ]?plex', r'Blex' ), # We do not keep the case here
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( '(i)ntel( ?)(o)ne', r'\1ntone' ),
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( '(l)iberation', r'\1iteration' ),
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( '(m)onaspace', r'\1onaspice' ),
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( '(m)( ?)plus', r'\1+'), # Added this, because they use a plus symbol :->
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( '(s)hare', r'\1hure' ),
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( '(s)ource', r'\1auce' ),
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( '(t)erminus', r'\1erminess' ),
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# Noone cares that font names starting with a digit are forbidden:
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( 'IBM 3270', r'3270'), # for historical reasons and 'IBM' is a TM or something
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# Some name parts that are too long for us
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( '^(?!ubuntu)(.*sans ?m)ono', r'\1'), # Various SomenameSansMono fonts
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( '(.*code ?lat)in', r'\1'), # for 'M PLUS Code Latin'
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( '(b)ig( ?)(b)lue( ?)(t)erminal', r'\1ig\3lue\5erm'), # Shorten BigBlueTerminal
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( '(.*)437TT', r'\g<1>437'), # Shorten BigBlueTerminal 437 TT even further
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( '(.*dyslexic ?alt)a', r'\1'), # Open Dyslexic Alta -> Open Dyslexic Alt
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( '(.*dyslexic ?m)ono', r'\1'), # Open Dyslexic Mono -> Open Dyslexic M
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( '(overpass ?m)ono', r'\1'), # Overpass Mono -> Overpass M
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( '(proggyclean) ?tt', r'\1'), # Remove TT from ProggyClean
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( '(terminess) ?\(ttf\)', r'\1'), # Remove TTF from Terminus (after renamed to Terminess)
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( '(.*ne)on', r'\1'), # Monaspace shorten face name
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( '(.*ar)gon', r'\1'), # Monaspace shorten face name
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( '(.*kr)ypton', r'\1'), # Monaspace shorten face name
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( '(.*xe)non', r'\1'), # Monaspace shorten face name
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( '(.*r)adon', r'\1n'), # Monaspace shorten face name
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( '(im ?writing ?q)uattro', r'\1uat'), # Rename iM Writing Quattro to Quat
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( '(im ?writing ?(mono|duo|quat)) ?s', r'\1'), # Remove S from all iM Writing styles
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( '(r)ec( ?)(m)ono( ?)(s)emicasual', r'\1ec\3ono\5emi'), # Shorten RecMonoSemicausal
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]
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# From https://adobe-type-tools.github.io/font-tech-notes/pdfs/5088.FontNames.pdf
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# The first short variant is from the linked table.
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# The second (longer) short variant is from diverse fonts like Noto.
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# We can
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# - use the long form
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# - use the very short form (first)
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# - use mild short form:
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# - has no modifier: use the second form
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# - has modifier: use second form of mod plus first form of weights2
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# - has modifier: use second form of mod plus second form of widths
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# This is encoded in get_shorten_form_idx()
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known_weights1 = { # can not take modifiers
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'Medium': ('Md', 'Med'),
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'Nord': ('Nd', 'Nord'),
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'Book': ('Bk', 'Book'),
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'Text': ('Txt', 'Text'),
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'Poster': ('Po', 'Poster'),
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'Demi': ('Dm', 'Demi'), # Demi is sometimes used as a weight, sometimes as a modifier
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'Regular': ('Rg', 'Reg'),
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'Display': ('DS', 'Disp'),
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'Super': ('Su', 'Sup'),
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'Retina': ('Rt', 'Ret'),
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}
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known_weights2 = { # can take modifiers
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'Black': ('Blk', 'Black'),
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'Bold': ('Bd', 'Bold'),
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'Heavy': ('Hv', 'Heavy'),
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'Thin': ('Th', 'Thin'),
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'Thick': ('Tk', 'Thck'),
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'Light': ('Lt', 'Light'),
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'': (), # Just for CodeClimate :-/
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}
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known_styles = [ # Keywords that end up as style (i.e. a RIBBI set)
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'Bold', 'Italic', 'Regular', 'Normal'
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]
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known_widths = { # can take modifiers
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'Compressed': ('Cm', 'Comp'),
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'Extended': ('Ex', 'Extd'),
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'Condensed': ('Cn', 'Cond'),
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'Narrow': ('Nr', 'Narrow'),
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'Compact': ('Ct', 'Compact'),
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}
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known_slopes = { # can not take modifiers
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'Inclined': ('Ic', 'Incl'),
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'Oblique': ('Obl', 'Obl'),
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'Italic': ('It', 'Italic'),
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'Upright': ('Up', 'Uprght'),
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'Kursiv': ('Ks', 'Kurs'),
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'Sloped': ('Sl', 'Slop'),
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}
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known_modifiers = {
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'Demi': ('Dm', 'Dem'),
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'Ultra': ('Ult', 'Ult'),
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'Semi': ('Sm', 'Sem'),
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'Extra': ('X', 'Ext'),
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}
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equivalent_weights = {
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100: ('thin', 'hairline'),
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200: ('extralight', 'ultralight'),
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300: ('light', ),
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350: ('semilight', ),
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400: ('regular', 'normal', 'book', 'text', 'nord', 'retina'),
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500: ('medium', ),
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600: ('semibold', 'demibold', 'demi'),
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700: ('bold', ),
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800: ('extrabold', 'ultrabold'),
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900: ('black', 'heavy', 'poster', 'extrablack', 'ultrablack'),
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}
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@staticmethod
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def weight_string_to_number(w):
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""" Convert a common string approximation to a PS/2 weight value """
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if not isinstance(w, str) or len(w) < 1:
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return 400
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w = w.lower().replace('-', '').replace(' ', '')
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for num, strs in FontnameTools.equivalent_weights.items():
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if w in strs:
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return num
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return None
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@staticmethod
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def weight_to_string(w):
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""" Convert a PS/2 weight value to the common string approximation """
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if w < 150:
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str = 'Thin'
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elif w < 250:
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str = 'Extra-Light'
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elif w < 350:
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str = 'Light'
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elif w < 450:
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str = 'Regular'
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elif w < 550:
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str = 'Medium'
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elif w < 650:
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str = 'Semi-Bold'
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elif w < 750:
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str = 'Bold'
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elif w < 850:
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str = 'Extra-Bold'
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else:
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str = 'Black'
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return str
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@staticmethod
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def is_keep_regular(basename):
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"""This has been decided by the font designers, we need to mimic that (for comparison purposes)"""
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KEEP_REGULAR = [
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'Agave',
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'Arimo',
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'Aurulent',
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'Cascadia',
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'Cousine',
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'Fantasque',
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'Fira',
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'Overpass',
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'Lilex',
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'Inconsolata$', # not InconsolataGo
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'IAWriter',
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'Meslo',
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'Monoid',
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'Mononoki',
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'Hack',
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'JetBrains Mono',
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'Noto Sans',
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'Noto Serif',
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'Victor',
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]
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for kr in KEEP_REGULAR:
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if (basename.rstrip() + '$').startswith(kr): return True
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return False
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@staticmethod
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def _parse_simple_font_name(name):
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"""Parse a fontname that does not follow the 'FontFamilyName-FontStyle' pattern"""
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# This is the usual case, because the font-patcher usually uses the fullname and
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# not the PS name
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if ' ' in name:
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return FontnameTools.parse_font_name(name.replace(' ', '-'))
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# Do we have a number-name boundary?
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p = re.split('(?<=[0-9])(?=[a-zA-Z])', name)
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if len(p) > 1:
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return FontnameTools.parse_font_name('-'.join(p))
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# Or do we have CamelCase?
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n = FontnameTools.camel_explode(name)
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if n != name:
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return FontnameTools.parse_font_name(n.replace(' ', '-'))
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return (False, FontnameTools.camel_casify(name), [], [], [], '')
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@staticmethod
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def parse_font_name(name):
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"""Expects a fontname following the 'FontFamilyName-FontStyle' pattern and returns ... parts"""
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# This could parse filenames in the beginning but that was never used in production; code removed with this commit
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for special in [
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('ExtLt', 'ExtraLight'), # IBM-Plex
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('Medm', 'Medium'), # IBM-Plex
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('Semi-Condensed', 'SemiCondensed'), # 3270
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('SmBld', 'SemiBold'), # IBM-Plex
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]:
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name = re.sub(r'\b' + special[0] + r'\b', special[1], name, 1, re.IGNORECASE)
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name = re.sub('[_\s]+', ' ', name)
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matches = re.match(r'([^-]+)(?:-(.*))?', name)
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familyname = FontnameTools.camel_casify(matches.group(1))
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style = matches.group(2)
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if not style:
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return FontnameTools._parse_simple_font_name(name)
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# These are the FontStyle keywords we know, in three categories
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# Weights end up as Typographic Family parts ('after the dash')
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# Styles end up as Family parts (for classic grouping of four)
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# Others also end up in Typographic Family ('before the dash')
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widths = [ m + s
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for s in list(FontnameTools.known_widths)
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for m in list(FontnameTools.known_modifiers) + ['']
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]
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weights = [ m + s
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for s in list(FontnameTools.known_weights2)
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for m in list(FontnameTools.known_modifiers) + [''] if m != s
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] + list(FontnameTools.known_weights1) + list(FontnameTools.known_slopes)
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weights = [ w for w in weights if w not in FontnameTools.known_styles ]
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# Some font specialities:
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other = [
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'-', 'Book', 'For', 'Powerline',
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'IIx', # Profont IIx
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'LGC', # Inconsolata LGC
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r'\bCE\b', # ProggycleanTT CE
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r'[12][cmp]n?', # MPlus
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r'(?:uni-)?1[14]', # GohuFont uni
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]
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( style, width_token ) = FontnameTools.get_name_token(style, widths)
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( style, weight_token ) = FontnameTools.get_name_token(style, weights)
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( style, style_token ) = FontnameTools.get_name_token(style, FontnameTools.known_styles)
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( style, other_token ) = FontnameTools.get_name_token(style, other)
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weight_token = width_token + weight_token
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while 'Regular' in style_token and len(style_token) > 1:
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# Correct situation where "Regular" and something else is given
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style_token.remove('Regular')
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# Recurse to see if unmatched stuff between dashes can belong to familyname
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matches2 = re.match(r'(\w+)-(.*)', style)
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if matches2:
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return FontnameTools.parse_font_name(familyname + matches2.group(1) + '-' + matches2.group(2))
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style = re.sub(r'(^|\s)\d+(\.\d+)+(\s|$)', r'\1\3', style) # Remove (free standing) version numbers
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style_parts = FontnameTools.drop_empty(style.split(' '))
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style = ' '.join(map(FontnameTools.front_upper, style_parts))
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familyname = FontnameTools.camel_explode(familyname)
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return (True, familyname, weight_token, style_token, other_token, style)
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