Script for generating a release note

Related to #4718

docs/scripts/release-note.sh

@@ -0,0 +1,100 @@
+#!/bin/bash
+# This script generates a release note.
+# It prints information about breaking-changes first and the rest.
+# The content is mostly based on `git log --oneline --since 202X-YY-ZZ`.
+
+# This script is supposed to work on all Windows based shell systems including WSL and git-bash.
+# If you make any modifications, please test them, because CI doesn't test this script.
+
+verbose=true
+$verbose && echo "Reminder: PLEASE make sure your local repo is up-to-date before running the script." >&2
+
+gh=""
+for candidate in "$(which gh.exe)" "/mnt/c/Program Files/GitHub CLI/gh.exe" "/c/Program Files/GitHub CLI/gh.exe"
+do
+	if [ -x "$candidate" ]
+	then
+		gh="$candidate"
+		break
+	fi
+done
+if [ "x$gh" = "x" ] || ! [ -x "$gh" ]
+then
+	echo "File not found: gh.exe"
+	echo "gh.exe can be downloaded from https://cli.github.com"
+	exit 1
+fi
+$verbose && echo "gh.exe is found from: $gh" >&2
+
+if [ "x$1" = "x" ]
+then
+	echo "This script requires 'since' information for git-log command."
+	echo "Usage: $0 2024-07-30"
+	exit 1
+fi
+since="$1"
+
+commits="$(git log --oneline --since $since)"
+commitsCount="$(echo "$commits" | wc -l)"
+
+echo "=== Breaking changes ==="
+breakingChanges=""
+for i in $(seq $commitsCount)
+do
+	line="$(echo "$commits" | head -$i | tail -1)"
+
+	# Get PR number from the git commit title
+	pr="$(echo "$line" | grep '#[1-9][0-9][0-9][0-9][0-9]*' | sed 's|.* (\#\([1-9][0-9][0-9][0-9][0-9]*\))|\1|')"
+	[ "x$pr" = "x" ] && break
+
+	# Check if the PR is marked as a breaking change
+	if "$gh" issue view $pr --json labels | grep -q 'pr: breaking change'
+	then
+		breakingChanges+="$line"
+	fi
+done
+if [ "x$breakingChanges" = "x" ]
+then
+	echo "No breaking changes"
+else
+	echo "$breakingChanges"
+fi
+echo ""
+
+echo "=== Non breaking changes ==="
+for i in $(seq $commitsCount)
+do
+	line="$(echo "$commits" | head -$i | tail -1)"
+
+	result="$line"
+	for dummy in 1
+	do
+		# Get PR number from the git commit title
+		pr="$(echo "$line" | grep '#[1-9][0-9][0-9][0-9][0-9]*' | sed 's|.* (\#\([1-9][0-9][0-9][0-9][0-9]*\))|\1|')"
+		[ "x$pr" = "x" ] && break
+
+		# Mark breaking changes with "[BREAKING]"
+		if "$gh" issue view $pr --json labels | grep -q 'pr: breaking change'
+		then
+			result="[BREAKING] $line"
+		fi
+
+		# Get the issue number for the PR
+		body="$("$gh" issue view $pr --json body)"
+		[ "x$body" = "x" ] && break
+		issue="$(echo "$body" | grep '#[1-9][0-9][0-9][0-9][0-9]*' | sed 's|.*\#\([1-9][0-9][0-9][0-9][0-9]*\).*|\1|')"
+		[ "x$issue" = "x" ] && break
+
+		# Get the labels of the issue
+		label="$("$gh" issue view $issue --json labels)"
+		[ "x$label" = "x" ] && break
+
+		# Get the goal type from the labels
+		goal="$(echo "$label" | grep '"goal:' | sed 's|.*"goal:\([^"]*\)".*|\1|')"
+		[ "x$goal" = "x" ] && break
+
+		result+=" (#$issue:$goal)"
+	done
+	echo "$result"
+done
+