[rockylinux] Refactor script (#246)

Make the script more readable, mostly by:

- using the Product class,
- a little bit of renaming and documentation,
- removing the use of functions when unnecessary.

src/rockylinux.py

@@ -1,33 +1,17 @@
-import re
 from common import http
 from common import dates
 from common import endoflife
 
-URL = "https://raw.githubusercontent.com/rocky-linux/wiki.rockylinux.org/development/docs/include/releng/version_table.md"
+product = endoflife.Product("rockylinux")
+print(f"::group::{product.name}")
+response = http.fetch_url("https://raw.githubusercontent.com/rocky-linux/wiki.rockylinux.org/development/docs/include/releng/version_table.md")
 
+for line in response.text.strip().split('\n'):
+    items = line.split('|')
+    if len(items) >= 5 and endoflife.DEFAULT_VERSION_PATTERN.match(items[1].strip()):
+        version = items[1].strip()
+        date = dates.parse_date(items[3])
+        product.declare_version(version, date)
 
-def parse_date(date_str):
-    date_str = date_str.replace(',', '').strip()
-    return dates.parse_date(date_str).strftime("%Y-%m-%d")
-
-
-def parse_markdown_table(table_text):
-    lines = table_text.strip().split('\n')
-    versions = {}
-
-    for line in lines:
-        items = line.split('|')
-        if len(items) >=5 and re.match(endoflife.DEFAULT_VERSION_REGEX, items[1].strip()):
-            version = items[1].strip()
-            date = parse_date(items[3])
-            print(f"{version}: {date}")
-            versions[version] = date
-
-    return versions
-
-
-print("::group::rockylinux")
-response = http.fetch_url(URL)
-versions = parse_markdown_table(response.text)
-endoflife.write_releases('rockylinux', versions)
+product.write()
 print("::endgroup::")