From 6d955210765de972f78b8c307df2f2387e4580ed Mon Sep 17 00:00:00 2001
From: Gabor Kiss-Vamosi <kisvegabor@gmail.com>
Date: Thu, 4 Nov 2021 17:07:49 +0100
Subject: [PATCH] tool: add changelog_gen.sh to automatically generate
 changelog

---
 scripts/.gitignore             |  1 +
 scripts/changelog-template.hbs | 28 ++++++++++++++++++++++++++++
 scripts/changelog_gen.sh       | 15 +++++++++++++++
 3 files changed, 44 insertions(+)
 create mode 100644 scripts/.gitignore
 create mode 100644 scripts/changelog-template.hbs
 create mode 100755 scripts/changelog_gen.sh

diff --git a/scripts/.gitignore b/scripts/.gitignore
new file mode 100644
index 000000000..38799b39d
--- /dev/null
+++ b/scripts/.gitignore
@@ -0,0 +1 @@
+CHANGELOG_LAST.md
diff --git a/scripts/changelog-template.hbs b/scripts/changelog-template.hbs
new file mode 100644
index 000000000..7dbfad5e3
--- /dev/null
+++ b/scripts/changelog-template.hbs
@@ -0,0 +1,28 @@
+{{#each releases}}
+  ## [{{title}}]({{href}}) {{niceDate}}
+
+  {{#commit-list commits heading='### Breaking Changes' message='BREAKING CHANGE:'}}
+    - :warning: {{subject}} [`{{shorthash}}`]({{href}})
+  {{/commit-list}}
+
+  {{#commit-list commits heading='### New Features' message='^feat' exclude='BREAKING CHANGE:'}}
+    - {{subject}} [`{{shorthash}}`]({{href}})
+  {{/commit-list}}
+  
+  {{#commit-list commits heading='### Performance' message='^perf' exclude='BREAKING CHANGE:'}}
+    - {{subject}} [`{{shorthash}}`]({{href}})
+  {{/commit-list}}
+  
+  {{#commit-list commits heading='### Fixes' message='^fix' exclude='(^fix conflict|^fix warning|BREAKING CHANGE:)'}}
+    - {{subject}} [`{{shorthash}}`]({{href}})
+  {{/commit-list}}
+  
+  {{#commit-list commits heading='### Docs' message='^docs'}}
+    - {{subject}} [`{{shorthash}}`]({{href}})
+  {{/commit-list}}
+  
+  {{#commit-list commits heading='### Others' exclude='(^fix|^feat|^perf|^docs)'}}
+    - {{subject}} [`{{shorthash}}`]({{href}})
+  {{/commit-list}}
+  
+{{/each}}
diff --git a/scripts/changelog_gen.sh b/scripts/changelog_gen.sh
new file mode 100755
index 000000000..1a36e6d53
--- /dev/null
+++ b/scripts/changelog_gen.sh
@@ -0,0 +1,15 @@
+# Generate CHANGELOG_LAST.md from changes since the last version tag. (vx.y.z-dev tags are ignored)
+# CHANGELOG_LAST.md can be edited manually if required and manually added to docs/CHANGELOG.md
+#
+# Requirements: 
+#    npm install -g auto-changelog
+#
+# Usage: 
+#    changelog-gen <next-version>
+#
+# Example: if the latest verision is v5.6.7 the followings can be used for bugfix, minor or major versions:  
+#    changelog-gen v5.6.8         
+#    changelog-gen v5.7.0         
+#    changelog-gen v6.0.0         
+
+auto-changelog -t changelog-template.hbs -l false --latest-version $1 --unreleased-only  --tag-pattern ^v[0-9]+.[0-9]+.[0-9]+$ -o CHANGELOG_LAST.md