From 4fe40ec0aded1050ef5411251709900e7afd8467 Mon Sep 17 00:00:00 2001
From: Pavel Valena <pvalena@redhat.com>
Date: Mon, 18 Jul 2022 11:02:34 +0200
Subject: [PATCH] Enhance newdracut.sh

---
 newdracut.sh | 77 ++++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 71 insertions(+), 6 deletions(-)
 mode change 100644 => 100755 newdracut.sh

diff --git a/newdracut.sh b/newdracut.sh
old mode 100644
new mode 100755
index c53481d..381fba5
--- a/newdracut.sh
+++ b/newdracut.sh
@@ -1,17 +1,82 @@
-#!/bin/bash
+#!/usr/bin/bash
 
-if [[ -f "$HOME/git/dracut/$1" ]]; then
+bash -n "$0" || exit 1
+shopt -s extglob
+
+patchnr() {
+    local nr
+    while [[ -n "$1" ]]; do
+        nr=$(cut -d'.' -f1 <<< "$1")
+        shift
+        [[ $((10#$nr)) -gt 0 ]] || echo "Invalid patch number: $nr" >&2
+        echo "$nr"
+    done
+}
+
+if [[ -e "$HOME/git/dracut/$1" ]]; then
     srcrpm="$HOME/git/dracut/$1"
+elif [[ -e "$HOME/dev/upstream/dracut/$1" ]]; then
+    srcrpm="$HOME/dev/upstream/dracut/$1"
 else
     srcrpm="$1"
 fi
 
-[[ -f $srcrpm ]] || exit 0
+[[ -f $srcrpm ]] || exit 3
+
+old_release=$(rpmspec -D "_sourcedir $(pwd)" -q --srpm --qf '%{release}' dracut.spec)
+old_release=${old_release%%.*}
 
 cp dracut.spec dracut.spec.old
-for i in *.patch; do git rm -f $i;done
+
+rm *.patch; git reset --hard HEAD
+last_patch_nr=$(patchnr *.patch | sort -n | tail -n 1)
+last_patch_nr=${last_patch_nr:-0000}
+#for i in *.patch; do git rm -f $i;done
 
 if rpm -ivh --define "_srcrpmdir $PWD" --define "_specdir $PWD" --define "_sourcedir $PWD" "$srcrpm"; then
-	ls *.patch &>/dev/null && git add *.patch
-	perl -n -e 'if ($do_print) {print "$_" ;}; if (/^%changelog/) { $do_print=1; }' < dracut.spec.old >> dracut.spec
+	  for nr in $(patchnr *.patch); do
+	    [[ $((10#$nr)) -gt $((10#$last_patch_nr)) ]] && git add "${nr}.patch"
+    done
+
+    new_version=$(rpmspec -D "_sourcedir $(pwd)" -q --srpm --qf '%{version}' dracut.spec)
+    new_release=$(rpmspec -D "_sourcedir $(pwd)" -q --srpm --qf '%{release}' dracut.spec)
+    new_release_full=${new_release%.*}
+    new_release=${new_release%%.*}
+
+    do_print=""
+    while IFS=$'\n' read -r line
+    do
+        if [ -z "$do_print" ] && [ "$line" = "%changelog" ]; then
+            do_print="yes"
+            echo "* $(LANG='C' date '+%a %b %d %Y') $(git config user.name) <$(git config user.email)> - ${new_version}-${new_release_full}"
+
+            for ((i=old_release; i<new_release; i++)); do
+                subject=$(grep '^Subject: ' +(0)$i.patch | head -1)
+                if [ -n "$subject" ]; then
+                    echo "-${subject#*\[PATCH\]}"
+                fi
+            done
+
+            echo
+
+        elif [ -n "$do_print" ]; then
+            echo "$line"
+        fi
+    done < dracut.spec.old >> dracut.spec
+
+    # Patch list:
+    # ls *.patch | tr -s ' ' '\n' | cut -d'.' -f1 | xargs -i zsh -c "nr=\$((10#{})); echo \"Patch\${nr}: {}.patch\""
+
+    git add dracut.spec
+
+    msg="Resolves: $(
+    for ((i=old_release; i<new_release; i++)); do
+        resolves=$(grep '^Resolves: ' +(0)$i.patch | head -1)
+        if [ -n "$resolves" ]; then
+            echo "${resolves#Resolves: }"
+        fi
+    done | sed -e 's/rhbz#/#/g' | sort -u | tr -s '\n' ',')"
+
+    git commit -m "$(echo -e "dracut-${new_version}-${new_release_full}\n\n${msg%,}")"
+
 fi