Clean up appdata releases update script

- Simplify code
- Fix output date for the 0.6.0 release
- Move to the packaging dir with a more descriptive filename

packaging/mirage.appdata.xml

@@ -55,20 +55,20 @@
   </screenshots>
   <metadata_license>FSFAP</metadata_license>
   <releases>
-    <release version="0.7.1" date="2021-03-04" />
-    <release version="0.7.0" date="2021-02-28" />
-    <release version="0.6.4" date="2020-09-16" />
-    <release version="0.6.3" date="2020-09-16" />
-    <release version="0.6.2" date="2020-08-28" />
-    <release version="0.6.1" date="2020-08-21" />
-    <release version="0.6.0" date="2020-07-1" />
-    <release version="0.5.2" date="2020-06-26" />
-    <release version="0.5.1" date="2020-06-05" />
-    <release version="0.5.0" date="2020-05-22" />
-    <release version="0.4.3" date="2020-04-03" />
-    <release version="0.4.2" date="2020-03-27" />
-    <release version="0.4.1" date="2020-03-23" />
-    <release version="0.4.0" date="2020-03-21" />
+    <release version="0.7.1" date="2021-03-04"/>
+    <release version="0.7.0" date="2021-02-28"/>
+    <release version="0.6.4" date="2020-09-16"/>
+    <release version="0.6.3" date="2020-09-16"/>
+    <release version="0.6.2" date="2020-08-28"/>
+    <release version="0.6.1" date="2020-08-21"/>
+    <release version="0.6.0" date="2020-07-17"/>
+    <release version="0.5.2" date="2020-06-26"/>
+    <release version="0.5.1" date="2020-06-05"/>
+    <release version="0.5.0" date="2020-05-22"/>
+    <release version="0.4.3" date="2020-04-03"/>
+    <release version="0.4.2" date="2020-03-27"/>
+    <release version="0.4.1" date="2020-03-23"/>
+    <release version="0.4.0" date="2020-03-21"/>
   </releases>
   <custom>
     <value key="Purism::form_factor">workstation</value>

packaging/update-appdata-releases.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+
+import html
+import re
+from pathlib import Path
+
+root          = Path(__file__).resolve().parent.parent
+title_pattern = re.compile(r"## (\d+\.\d+\.\d+) \((\d{4}-\d\d-\d\d)\)")
+release_lines = ["  <releases>"]
+
+for line in (root / "docs" / "CHANGELOG.md").read_text().splitlines():
+    match = title_pattern.match(line)
+
+    if match:
+        args = (html.escape(match.group(1)), html.escape(match.group(2)))
+        release_lines.append('    <release version="%s" date="%s"/>' % args)
+
+appdata     = root / "packaging" / "mirage.appdata.xml"
+in_releases = False
+final_lines = []
+
+for line in appdata.read_text().splitlines():
+    if line == "  <releases>":
+        in_releases = True
+        final_lines += release_lines
+    elif line == "  </releases>":
+        in_releases = False
+
+    if not in_releases:
+        final_lines.append(line)
+
+appdata.write_text("\n".join(final_lines))

refresh-releases.py

@@ -1,68 +0,0 @@
-#!/usr/bin/env python3
-
-from pathlib import Path
-import html
-import mistune
-import re
-
-
-def get_src_path():
-    return str(Path(__file__).resolve().parent)
-
-
-def make_changelog_dict(title):
-    title_parts = title.split(" ")
-
-    return {
-        "date": title_parts[2][1:-2],
-        "version": title_parts[1]
-    }
-
-
-def make_release_tag(version, date):
-    return "    <release version=\"" + html.escape(version) \
-            + "\" date=\"" + html.escape(date) \
-            + "\" />\n" \
-
-
-markdown_parser = mistune.Markdown(escape=False)
-changelog_title_pattern = re.compile(r"##\ \d\.\d\.\d\ \(\d{4}-\d{2}-\d{2}\)")
-changelog_lines = open(get_src_path() + "/docs/CHANGELOG.md", "r").readlines()
-changelog_entries = []
-
-for line in changelog_lines:
-    if changelog_title_pattern.match(line):
-        changelog_entry = make_changelog_dict(line)
-        changelog_entries.append(changelog_entry)
-
-appdata_releases = ""
-
-for entry in changelog_entries:
-    appdata_releases += make_release_tag(entry["version"], entry["date"])
-
-appdata_path = get_src_path() + "/packaging/mirage.appdata.xml"
-appdata_lines = open(appdata_path, "r").readlines()
-releases_open_pattern = re.compile(r"  <releases>")
-releases_close_pattern = re.compile(r"  </releases>")
-
-opening_tag_found = False
-releases_open_line = 0
-releases_close_line = 0
-
-for line in appdata_lines:
-    if not opening_tag_found:
-        releases_open_line += 1
-    if releases_open_pattern.match(line):
-        opening_tag_found = True
-    if releases_close_pattern.match(line):
-        break
-    releases_close_line += 1
-
-# We need to remove the old release entries since we're inserting
-# new ones unconditionally
-del appdata_lines[releases_open_line:releases_close_line]
-appdata_lines.insert(releases_open_line, appdata_releases)
-
-with open(appdata_path, "w") as appdata_file:
-    appdata_lines = "".join(appdata_lines)
-    appdata_file.write(appdata_lines)