add [btn][/btn] rendering, favicon processing...

functions.py

@@ -4,6 +4,7 @@ from bleach.sanitizer import Cleaner
 from datetime import datetime
 from pathlib import Path
 from mistune import HTMLRenderer, escape
+from PIL import Image
 import mistune
 import humanize
 import mysql.connector
@@ -99,20 +100,34 @@ def getRandomWord():
     return random.choice(items)
 
 def trimContent(var, trim):
+    if int(trim) > 0:
         trimmed = var[:trim] + '…' if len(var) >= trim else var
         trimmed = trimmed.rstrip()
         return trimmed
-
-class FixAsciiEmojis(HTMLRenderer):
-    def text(self, text):
-        if text.startswith('>') and text.endswith('<'):
-            return text
     else:
-            return escape(text)
+        return var
+
+# mistune plugin
+inlineBtnPattern = r'\[btn\](?P<button_text>.+?)\[/btn\]'
+
+def parse_inline_button(inline, m, state):
+    text = m.group("button_text")
+    state.append_token({"type": "inline_button", "raw": text})
+    return m.end()
+
+def render_inline_button(renderer, text):
+    return f"<button class='btn btn-outline-secondary'>{text}</button>"
+
+
+def button(md):
+    md.inline.register('inline_button', inlineBtnPattern, parse_inline_button, before='link')
+    if md.renderer and md.renderer.NAME == 'html':
+        md.renderer.register('inline_button', render_inline_button)
 
 def renderMarkdown(text):
     plugins = [
-        'strikethrough'
+        'strikethrough',
+        button
     ]
     allowed_tags = [
         'p',
@@ -123,7 +138,8 @@ def renderMarkdown(text):
         'br',
         's',
         'del',
-        'a'
+        'a',
+        'button'
     ]
     allowed_attrs = {
         'a': 'href'
@@ -138,12 +154,11 @@ def renderMarkdown(text):
     md = mistune.create_markdown(
         escape=False,
         plugins=plugins,
-        hard_wrap=True,
+        hard_wrap=True
-        renderer=FixAsciiEmojis()
     )
     html = md(text)
-    # cleaner = Cleaner(tags=allowed_tags, attributes=allowed_attrs)
+    cleaner = Cleaner(tags=allowed_tags, attributes=allowed_attrs)
-    # clean_html = cleaner.clean(html)
+    clean_html = cleaner.clean(html)
     return Markup(html)
 
 def generateMetadata(question=None, answer=None):
@@ -165,3 +180,28 @@ def generateMetadata(question=None, answer=None):
 
     # return 'metadata' dictionary
     return metadata
+
+allowedFileExtensions = {'png', 'jpg', 'jpeg', 'webp', 'bmp', 'jxl'}
+
+def allowedFile(filename):
+    return '.' in filename and filename.rsplit('.', 1)[1].lower() in allowedFileExtensions
+
+def generateFavicon(file_name):
+	sizes = {
+		'apple-touch-icon.png': (180, 180),
+        'android-chrome-192x192.png': (192, 192),
+        'android-chrome-512x512.png': (512, 512),
+		'favicon-32x32.png': (32, 32),
+		'favicon-16x16.png': (16, 16),
+		'favicon.ico': (16, 16)
+	}
+
+	img = Image.open(const.faviconDir / file_name)
+
+	if not os.path.exists(const.faviconDir):
+		os.makedirs(const.faviconDir)
+
+	for filename, size in sizes.items():
+		resized_img = img.resize(size)
+		resized_img_absolute_path = const.faviconDir / filename
+		resized_img.save(resized_img_absolute_path)