From d3d1251faadf5b3a2192db488f39c53cec4f3af0 Mon Sep 17 00:00:00 2001
From: Markus Frosch <markus.frosch@icinga.com>
Date: Mon, 9 Sep 2019 16:25:08 +0200
Subject: [PATCH] release: Add RPM implementation

---
 icinga-build-release | 81 ++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 79 insertions(+), 2 deletions(-)

diff --git a/icinga-build-release b/icinga-build-release
index 4a637a6..0c9cd83 100755
--- a/icinga-build-release
+++ b/icinga-build-release
@@ -1,10 +1,15 @@
 #!/bin/bash
 
-set -e
+set -eo pipefail
 
 : "${GIT_REMOTE:=origin}"
 : "${DCH_DIST:=icinga}"
 
+RPM_VERSION_RE='^(Version:\s+).*'
+RPM_VERSION_REPLACE='\1'
+RPM_REVISION_RE='^(Release:\s+).*'
+RPM_REVISION_SUFFIX='%{?dist}'
+
 error() {
   if [ -t 2 ]; then
     {
@@ -25,6 +30,14 @@ fail() {
 help() {
   echo "Usage: $0 <version> [message]"
   echo
+  echo "Examples:"
+  echo "  Only bump upstream version:      icinga-build-release 1.7.0"
+  echo "  Full release with tag and push:  icinga-build-release 1.7.0-1"
+  echo
+}
+
+rpm_date() {
+  LANG=C echo "$(date +%A | sed -r 's~([a-z]{3}).*~\1~i')" "$(date +'%b %d %Y')"
 }
 
 if [ $# -ge 1 ]; then
@@ -106,7 +119,71 @@ if [ "$variant" = deb ]; then
   # Staging the change
   git add debian/changelog
 else # rpm
-  fail "RPM not yet implemented!" >&2
+  spec_file="$(ls ./*.spec)"
+
+  if ! current_version="$(grep -P "$RPM_VERSION_RE" "$spec_file" | cut -d: -f2- | awk '{$1=$1};1')"; then
+    fail "Could not find Version: in ${spec_file}"
+  fi
+
+  # special cases for version
+  case "$current_version" in
+    '%{module_version}')
+      echo "Found %{module_version} as version and will replace this!"
+      RPM_VERSION_RE='^(%(global|define)\s+module_version\s+).*'
+
+      current_version="$(grep -P "$RPM_VERSION_RE" "$spec_file" | awk '{print $3}')"
+      ;;
+  esac
+
+  if ! current_revision="$(grep -P "$RPM_REVISION_RE" "$spec_file" | cut -d: -f2- | awk '{$1=$1};1')"; then
+    fail "Could not find Revision: in ${spec_file}"
+  fi
+
+  # remove dist suffix
+  current_revision="$(echo "$current_revision" | sed -r 's~%\{\?dist\}~~')"
+
+  # special cases for revision
+  case "$current_revision" in
+    '%{revision}')
+      echo "Found %{revision} as version and will replace this!"
+      RPM_REVISION_RE='^(%(global|define)\s+revision\s+).*'
+      RPM_REVISION_SUFFIX=''
+
+      current_revision="$(grep -P "$RPM_REVISION_RE" "$spec_file" | awk '{print $3}')"
+      ;;
+  esac
+
+  echo "Found current version as ${current_version} with revision ${current_revision}"
+
+  new_version="$(echo "${version}" | cut -d- -f1)"
+  if [[ "${version}" != *-* ]]; then
+    new_revision=1
+  else
+    new_revision="$(echo "${version}" | cut -d- -f2-)"
+  fi
+
+  # Replace data in spec file
+  sed -ri \
+    -e "s~${RPM_VERSION_RE}~${RPM_VERSION_REPLACE}${new_version}~" \
+    -e "s~${RPM_REVISION_RE}~${RPM_VERSION_REPLACE}${new_revision}${RPM_REVISION_SUFFIX}~" \
+    "$spec_file"
+
+  # Check last changelog entry?
+  #last_changelog="$(grep -A1 %changelog "${spec_file}" | tail -n1)"
+  #if [[ "${last_changelog}" = *" - ${new_version}-${new_revision}" ]]; then
+
+  # Add to changelog
+  new_changelog="$(printf '* %s %s <%s> - %s' \
+    "$(rpm_date)" \
+    "$(git config user.name)" \
+    "$(git config user.email)" \
+    "${new_version}-${new_revision}")"
+
+  # Insert after %changelog
+  sed -i "/^%changelog/a ${new_changelog}\\n- ${message}\\n" "${spec_file}"
+
+  # Stage the changes
+  git add "${spec_file}"
 fi
 
 # Show the user what changed
-- 
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