Add script to pull emojis from Unicode.org as a file

tools/import_emojis.py

@@ -0,0 +1,77 @@
+import requests
+import json
+import re
+from bs4 import BeautifulSoup
+
+# Create skeleton of the final json file as a python dictionary:
+emoji_picker_datasource = {
+    "compressed": True,
+    "categories": [],
+    "emojis": {},
+    "aliases": {}
+}
+emoji_picker_datasource_categories = emoji_picker_datasource["categories"]
+emoji_picker_datasource_emojis = emoji_picker_datasource["emojis"]
+
+
+# Get official emoji list from unicode.org (Emoji List, v13.1 at time of writing)
+req = requests.get("https://unicode.org/emoji/charts/emoji-list.html")
+soup = BeautifulSoup(req.content, 'html.parser')
+
+# Navigate to table
+table = soup.body.table
+
+# Go over all rows
+for row in table.find_all('tr'):
+    # Add "bigheads"  rows to categories
+    if 'bighead' in next(row.children)['class']:
+        relevant_element = row.find('a')
+        category_id = relevant_element['name']
+        category_name = relevant_element.text
+        emoji_picker_datasource_categories.append({
+            "id": category_id,
+            "name": category_name,
+            "emojis": []
+        })
+
+    # Add information in "rchars" rows to the last encountered category and emojis
+    if row.find('td', class_='code'):
+        # Get columns
+        cols = row.find_all('td')
+        no_element = cols[0]
+        code_element = cols[1]
+        sample_element = cols[2]
+        cldr_element = cols[3]
+        keywords_element = cols[4]
+
+        # Extract information from columns
+        # Extract name and id
+        # => Remove spaces, colons and unicode-characters
+        emoji_name = cldr_element.text
+        emoji_id = cldr_element.text.lower()
+        emoji_id = re.sub(r'[^A-Za-z0-9 ]+', '', emoji_id, flags=re.UNICODE)  # Only keep alphanumeric, space characters
+        emoji_id = emoji_id.strip()  # Remove leading/trailing whitespaces
+        emoji_id = emoji_id.replace(' ', '-')
+
+        # Extract emoji unicode-codepoint
+        emoji_code_raw = code_element.text
+        emoji_code_list = emoji_code_raw.split(" ")
+        emoji_code_list = [e[2:] for e in emoji_code_list]
+        emoji_code = "-".join(emoji_code_list)
+
+        # Extract keywords
+        emoji_keywords = keywords_element.text.split(" | ")
+
+        # Add the emoji-id to the last entry in "categories"
+        emoji_picker_datasource_categories[-1]["emojis"].append(emoji_id)
+
+        # Add the emoji itself to the "emojis" dict
+        emoji_picker_datasource_emojis[emoji_id] = {
+                "a": emoji_name,
+                "b": emoji_code,
+                "j": emoji_keywords
+        }
+
+# Print result to file (overwrite previous), without escaping unicode characters
+with open("../vector/src/main/res/raw/emoji_picker_datasource.json", "w") as outfile:
+    json.dump(emoji_picker_datasource, outfile, ensure_ascii=False)