1 files changed, 87 insertions, 0 deletions
diff --git a/scripts/dot-local/bin/aconfmgr-patcher b/scripts/dot-local/bin/aconfmgr-patcher
new file mode 100755
index 0000000..cbc9c93
--- /dev/null
+++ b/scripts/dot-local/bin/aconfmgr-patcher
@@ -0,0 +1,87 @@
+#!/bin/bash
+set -euo pipefail
+shopt -s nullglob
+
+input="99-unsorted.sh"
+output="98-patches.sh"
+filestoremove="remove-these"
+truncate=1
+
+mkdir -p patches
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+  --no-trunc) truncate=0 ;;
+  --in)
+    input=$2
+    shift 1
+    ;;
+  --out)
+    output=$2
+    shift 1
+    ;;
+  *) break ;;
+  esac
+  shift 1
+done
+
+tmpfile=$(mktemp)
+[[ $truncate -eq 1 ]] && (echo -n >"$output") # empty output file to be rewritten
+echo "temp file is $tmpfile"
+
+while IFS= read -r line; do
+  # Only process lines starting with "CopyFile "
+  [[ "$line" =~ ^CopyFile[[:space:]]+/ ]] || {
+    echo "$line" >>"$tmpfile"
+    continue
+  }
+
+  path="${line#CopyFile }"
+  path="${path%% *}" # remove any trailing args
+
+  # Check ownership
+  if ! info=$(pacman -Qo "$path" 2>/dev/null); then
+    echo "WARN: Skipping $path: not owned by any package" >&2
+    echo "$line" >>"$tmpfile"
+    continue
+  fi
+
+  # Example output: "/etc/pacman.conf is owned by pacman 5.1.3-1"
+  pkg_name=$(awk '{print $(NF-1)}' <<<"$info")
+  pkg_ver=$(awk '{print $NF}' <<<"$info")
+
+  # Find package archive in cache
+  archives=(/var/cache/pacman/pkg/${pkg_name}-${pkg_ver}-*.pkg.tar.zst)
+  if ((${#archives[@]} == 0)); then
+    echo "WARN: Cached package not found for $pkg_name-$pkg_ver" >&2
+    echo "$line" >>"$tmpfile"
+    continue
+  fi
+  archive="${archives[0]}"
+
+  # Create diff file name
+  base=$(basename "$path")
+  diff_file="patches/${pkg_name}_${base}.diff"
+
+  # Relative path inside package archive
+  relpath="${path#/}"
+
+  # Generate diff
+  if ! tar -xOf "$archive" "$relpath" 2>/dev/null | diff -u - "$path" > "$diff_file"; then
+    echo "patch \"\$(GetPackageOriginalFile $pkg_name $path)\" ./$diff_file" >>"$output"
+    echo "$path" >> $filestoremove
+    echo "INFO: Added patch for $path" >&2
+  else
+    rm -f "$diff_file"
+    echo "INFO: No differences for $path"
+  fi
+done <"$input"
+
+if ! diff -u --color=always "$input" "$tmpfile" 2>/dev/null; then
+  :
+fi
+mv "$input" "$input.backup"
+mv "$tmpfile" "$input"
+
+echo
+echo "OK: All done. Patch commands written to $output"