Commit 4bbf5e7eb952d08a813af71948711d33f1580a02
Parent: 
Author: mcol <mcol@posteo.net>
Date: 2019-10-13 21:15:36 +0100
Committer: mcol <mcol@posteo.net>
Committed: 2019-10-13 21:15:36 +0100

Initialise as git repo with almost usable plugin

minify_fontawesome.py Added

@@ -0,0 +1,123 @@
+# -*- coding: utf-8 -*-
+"""
+minify-fontawesome - A plugin for the pelican static site generator that
+extracts only icons used in your website from fontawesome source files to
+copies them to the output folder to lighten served fontawesome files.
+
+To use, set MINIFY_FONTAWESOME in your pelican config to a locally downloaded
+fontawesome icon folder (e.g. '/home/user/fontawesome-free-5.11.2-web').
+
+These can be downloaded from https://fontawesome.com/download (the web fonts).
+
+It also requires that fontforge is installed.
+
+This will save the css file into output_path/static/css/fa.css, and fonts into
+output_path/static/webfonts/.
+
+To use it, something like this should be added to html headers:
+    <link rel="stylesheet" href="{{ SITEURL }}/theme/css/fa.css"/>
+"""
+
+
+import fontforge as ff
+import os
+from pelican import signals
+import re
+
+
+def copy_glyphs(source, dest, css_blocks):
+    """
+    Copy only used icons from the font files into the output folder.
+    """
+    used_icons = []
+    for block in css_blocks:
+        used_icons.append(re.search('content:"(.*?)"', block).group(0))
+
+    return  #TODO
+    for root, dirs, files in os.walk(source):
+        for f in files:
+            if f.endswith('woff'):
+                font = ff.open(os.path.join(root, f))
+                for icon in used_icons:
+                    if font.findEncodingSlot(icon):
+                        font.selection.select(
+                            ("more", None),
+                            icon,
+                        )
+                font.copy()
+                new_font = ff.font()
+                new_font.paste()
+                new_font.fontname = font.fontname
+                new_font.generate(os.path.join(dest, f))
+
+
+def get_classes(folder):
+    """
+    Gets a list of CSS classes defined in all html files within a folder.
+    """
+    fa_classes = []
+    all_classes = []
+
+    for root, dirs, files in os.walk(folder):
+        for f in files:
+            if f.endswith('html'):
+                with open(os.path.join(root, f), "r") as fd:
+                    matches = re.findall('class=[\'"](.*?)[\'"]', fd.read())
+                    if matches:
+                        for match in matches:
+                            all_classes.extend(match.split())
+    
+    for cls in set(all_classes):
+        if cls.startswith('fa'):
+            fa_classes.append(cls)
+
+    return fa_classes
+
+
+def copy_css(output_path, css_file):
+    """
+    Copy css for only used icons over to output folder. Returns the css blocks
+    corresponding to these icons so we know which icons to copy from the font
+    files.
+    """
+    with open(css_file, 'r') as fd:
+        contents = fd.read()
+
+    base_css = re.sub('\.fa-[\w-]+:before.*?}', '', contents)
+
+    css_blocks = []
+    for cls in get_classes(output_path):
+        match = re.search(f'\.{cls}:before.*?}}', contents)
+        if match:
+            css_blocks.append(match.group(0))
+
+    css = base_css + ''.join(css_blocks)
+    css_file = os.path.join(output_path, 'theme', 'css', 'fa.css')
+    with open(css_file, 'w') as fd:
+        fd.write(css)
+
+    return css_blocks
+
+
+def main(instance):
+    FONT_PATH = instance.settings.get('MINIFY_FONTAWESOME', None)
+    if not FONT_PATH or not os.path.isdir(FONT_PATH):
+        return
+
+    output_path = instance.output_path
+    css_file = os.path.join(FONT_PATH, 'css', 'all.min.css')
+
+    css_blocks = copy_css(
+        output_path,
+        css_file,
+    )
+
+    copy_glyphs(
+        os.path.join(FONT_PATH, 'webfonts'),
+        os.path.join(output_path, 'static', 'webfonts'),
+        css_blocks,
+    )
+
+
+def register():
+    signals.finalized.connect(main)

__init__.py Added

@@ -0,0 +1,2 @@
+# -*- coding: utf-8 -*-
+from .minify_fontawesome import *

.gitignore Added

@@ -0,0 +1,8 @@
+*.egg-info
+*.pyc
+*.pyo
+.DS_Store
+MANIFEST
+build
+dist
+__pycache__