font-patcher: Rename glyphs to our ID / Class name

[why]
The glyphnames in the font files are sometimes off. We take them from
the symbol source/font and ofter they are empty or even plain wrong (esp
if we move to other codepoints).

[how]
We have the list of all glyphnames that is generated by collecting all
data from the i_*.sh files. When patching we take this information now
and use it if appropriate.

Make sure the glyphname.json file is included in our zip patcher release
and also in the Docker image. It will run as before if the file can not
be found or is invalid etc.

Suggested-by: Ulices <hasecilu@tuta.io>
Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>

.dockerignore

@@ -2,6 +2,7 @@
 **
 !src/glyphs
 !font-patcher
+!glyphnames.json
 !bin/scripts/name_parser/Fontname*.py
 !bin/scripts/docker-entrypoint.sh
 !.codeclimate.yml

bin/scripts/archive-font-patcher.sh

@@ -29,6 +29,7 @@ find "${outputdir:?}" -name "FontPatcher.zip" -type f -delete
 cd -- "$scripts_root_dir/../../" || exit 1
 find "src/glyphs" | zip -9 "$outputdir/FontPatcher" -@
 find "bin/scripts/name_parser" -name "Fontname*.py" | zip -9 "$outputdir/FontPatcher" -@
+find "glyphnames.json" | zip -9 "$outputdir/FontPatcher" -@
 find "font-patcher" | zip -9 "$outputdir/FontPatcher" -@
 
 # add mini readme file

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 = "4.14.9"
+script_version = "4.15.0"
 
 version = "3.2.1"
 projectName = "Nerd Fonts"
@@ -318,6 +318,16 @@ def create_filename(fonts):
         sfnt_psubfam = '-' + sfnt_psubfam
     return (sfnt_pfam + sfnt_psubfam).replace(' ', '')
 
+def fetch_glyphnames():
+    """ Read the glyphname database and put it into a dictionary """
+    try:
+        glyphnamefile = os.path.abspath(os.path.dirname(sys.argv[0])) + '/glyphnames.json'
+        with open(glyphnamefile, 'r') as f:
+            namelist = json.load(f)
+            return { int(v['code'], 16): k for k, v in namelist.items() if 'code' in v }
+    except Exception as error:
+        logger.warning("Can not read glyphnames file (%s)", repr(error))
+        return {}
 
 class font_patcher:
     def __init__(self, args, conf):
@@ -333,6 +343,7 @@ class font_patcher:
         self.onlybitmaps = 0
         self.essential = set()
         self.xavgwidth = [] # list of ints
+        self.glyphnames = fetch_glyphnames()
 
     def patch(self, font):
         self.sourceFont = font
@@ -1488,7 +1499,8 @@ class font_patcher:
                 # Paste it
                 self.sourceFont.selection.select(currentSourceFontGlyph)
                 self.sourceFont.paste()
-                self.sourceFont[currentSourceFontGlyph].glyphname = sym_glyph.glyphname
+                self.sourceFont[currentSourceFontGlyph].glyphname = \
+                        self.glyphnames.get(currentSourceFontGlyph, sym_glyph.glyphname) if setName != 'Custom' else sym_glyph.glyphname
                 self.sourceFont[currentSourceFontGlyph].manualHints = True # No autohints for symbols
 
             # Prepare symbol glyph dimensions