enhance metainfo XML file cmake integration, remove now redundant git hook

CMakeLists.txt

@@ -58,6 +58,7 @@ cmake_minimum_required(VERSION 3.9.0)
 
 # Global variables describing the project.
 string(TIMESTAMP YEAR "%Y")
+string(TIMESTAMP DATE "%Y-%m-%d")
 
 set(APP_NAME "RSS Guard")
 set(APP_EMAIL "rotter.martinos@gmail.com")

resources/desktop/rssguard.metainfo.xml.in

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Copyright 2017-2022 Martin Rotter <rotter.martinos@gmail.com> -->
+<!-- Copyright 2017-@YEAR@ Martin Rotter <rotter.martinos@gmail.com> -->
 <component type="desktop-application">
   <id>@APP_REVERSE_NAME@</id>
   <metadata_license>CC0-1.0</metadata_license>
@@ -60,7 +60,7 @@
   <content_rating type="oars-1.0" />
   <content_rating type="oars-1.1" />
   <releases>
-    <release version="4.2.7" date="2023-01-10" />
+    <release version="@APP_VERSION@" date="@DATE@" />
   </releases>
   <provides>
     <binary>@APP_LOW_NAME@</binary>

resources/scripts/hooks/pre-commit

@@ -1,17 +0,0 @@
-#!/bin/sh
-
-changelog_file="resources/text/CHANGELOG"
-datestring="$(date +%F)"
-versionstring="$(head -n 1 "$changelog_file")"
-
-for appdata_file in resources/desktop/*.metainfo.xml.in; do
-  appdata_file_n="${appdata_file}.n"
-
-  # Set version and date.
-  cat "$appdata_file" | sed -e "s@release version\=\"[A-Za-z0-9.]*\"@release version\=\"$versionstring\"@g" | sed -e "s@ date\=\"[0-9\-]*\"@ date\=\"$datestring\"@g" > "$appdata_file_n"
-  mv "$appdata_file_n" "$appdata_file"
-
-  git add "$appdata_file"
-done
-
-exit 0