name-parser: Remove filename parsing code

[why]
Patching CartographCF-Bold.ttf creates this naming:

    Family (ID 1)      : CartographF Nerd Font Condensed
    SubFamily (ID 2)   : Bold
    Fullname (ID 4)    : CartographF Nerd Font Condensed Bold
    PSN (ID 6)         : CartographFNF-CondensedBold
    PrefFamily (ID 16) : CartographF Nerd Font
    PrefStyles (ID 17) : Condensed Bold

    CartographF Nerd Font Condensed Bold
    \===> 'CartographFNerdFont-CondensedBold.ttf'

[how]
The font-patcher historically used the file name of the to-be-patched
font to come up with the new name. When the FontnameParser has been
developed that mechanics has been copied at least for fallback. The
earliest tests compared old and new naming with all the filenames.

Later, when the FontnameParser has been used to really apply name
changes it has always based the parsing on the Fullname or the PSname,
because they really hold the information (or at least should hold);
while the filename might be completely random.

Still code the dealt with specific problems in FILEnames prevailed. The
Ubuntu font for example has a file name like 'Ubuntu-C.ttf', and we
needed to convert the C to Condensed.

As that requirement vanished we can drop all the code that has been
added specifically only for parsing the Ubuntu font filenames.

Side note: USUALLY font filenames should be roughly equal to the PSname.

Fixes: #1258

Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>

bin/scripts/name_parser/FontnameParser.py

@@ -7,8 +7,8 @@
 class FontnameParser:
     """Parse a font name and generate all kinds of names"""
 
-    def __init__(self, filename, logger):
-        """Parse a font filename and store the results"""
+    def __init__(self, fontname, logger):
+        """Parse a fontname and store the results"""
         self.parse_ok = False
         self.use_short_families = (False, False, False) # ( camelcase name, short styles, aggressive )
         self.keep_regular_in_family = None # None = auto, True, False
@@ -17,7 +17,7 @@ def __init__(self, filename, logger):
         self.ps_fontname_suff = ''
         self.short_family_suff = ''
         self.name_subst = []
-        [ self.parse_ok, self._basename, self.weight_token, self.style_token, self.other_token, self._rest ] = FontnameTools.parse_font_name(filename)
+        [ self.parse_ok, self._basename, self.weight_token, self.style_token, self.other_token, self._rest ] = FontnameTools.parse_font_name(fontname)
         self.basename = self._basename
         self.rest = self._rest
         self.add_name_substitution_table(FontnameTools.SIL_TABLE)

bin/scripts/name_parser/FontnameTools.py

@@ -5,7 +5,7 @@
 import sys
 
 class FontnameTools:
-    """Deconstruct a font filename to get standardized name parts"""
+    """Deconstruct a fontname to get standardized name parts"""
 
     @staticmethod
     def front_upper(word):
@@ -69,15 +69,7 @@ def unify_style_names(style_name):
             'text':         '',
             'ce':           'CE',
             #'semibold':     'Demi',
-            'ob':           'Oblique',
-            'it':           'Italic',
-            'i':            'Italic',
-            'b':            'Bold',
             'normal':       'Regular',
-            'c':            'Condensed',
-            'r':            'Regular',
-            'm':            'Medium',
-            'l':            'Light',
         }
         if style_name in known_names:
             return known_names[style_name.lower()]
@@ -306,8 +298,9 @@ def is_keep_regular(basename):
 
     @staticmethod
     def _parse_simple_font_name(name):
-        """Parse a filename that does not follow the 'FontFamilyName-FontStyle' pattern"""
-        # No dash in name, maybe we have blanc separated filename?
+        """Parse a fontname that does not follow the 'FontFamilyName-FontStyle' pattern"""
+        # This is the usual case, because the font-patcher usually uses the fullname and
+        # not the PS name
         if ' ' in name:
             return FontnameTools.parse_font_name(name.replace(' ', '-'))
         # Do we have a number-name boundary?
@@ -322,7 +315,8 @@ def _parse_simple_font_name(name):
 
     @staticmethod
     def parse_font_name(name):
-        """Expects a filename following the 'FontFamilyName-FontStyle' pattern and returns ... parts"""
+        """Expects a fontname following the 'FontFamilyName-FontStyle' pattern and returns ... parts"""
+        # This could parse filenames in the beginning but that was never used in production; code removed with this commit
         name = re.sub(r'\bsemi-condensed\b', 'SemiCondensed', name, 1, re.IGNORECASE) # Just for "3270 Semi-Condensed" :-/
         name = re.sub('[_\s]+', ' ', name)
         matches = re.match(r'([^-]+)(?:-(.*))?', name)
@@ -353,19 +347,9 @@ def parse_font_name(name):
             r'(?:uni-)?1[14]',  # GohuFont uni
         ]
 
-        # Sometimes used abbreviations
-        weight_abbrevs = [ 'ob', 'c', 'm', 'l', ]
-        style_abbrevs = [ 'it', 'r', 'b', 'i', ]
-
         ( style, weight_token ) = FontnameTools.get_name_token(style, weights)
         ( style, style_token ) = FontnameTools.get_name_token(style, styles)
         ( style, other_token ) = FontnameTools.get_name_token(style, other, True)
-        if (len(style) < 4
-                and style.lower() != 'pro'): # Prevent 'r' of Pro to be detected as style_abbrev
-            ( style, weight_token_abbrevs ) = FontnameTools.get_name_token(style, weight_abbrevs)
-            ( style, style_token_abbrevs ) = FontnameTools.get_name_token(style, style_abbrevs)
-            weight_token += weight_token_abbrevs
-            style_token += style_token_abbrevs
         while 'Regular' in style_token and len(style_token) > 1:
             # Correct situation where "Regular" and something else is given
             style_token.remove('Regular')

font-patcher

@@ -6,7 +6,7 @@
 from __future__ import absolute_import, print_function, unicode_literals
 
 # Change the script version when you edit this script:
-script_version = "4.3.2"
+script_version = "4.3.3"
 
 version = "3.0.1"
 projectName = "Nerd Fonts"