Scripts to generate AUTHORS and ChangeLog (#1101)

Originated by @KangLin in #1097 

Create scripts that generate ChangeLog and Authors - can be
combined/called by other scripts during build process
Scripts are idempotent: running them multiple times should not change
anything
They do not commit or tag - up to the author/reviewer to make those
changes

The lists are generated in Markdown compatible format (so that we can
change those files to .md in the future)

NOTES:
- Authors file is generated in alphabetical order, disregarding specific
contributions
- ChangeLog file is generated in order of commits, omitting bot commits
(dependabot)

Co-authored-by: Kang Lin <kl222@126.com>

authors.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -e
+
+SOURCE_DIR=`pwd`
+
+# Generate AUTHORS
+echo "Thanks to the following contributors (in alphabetical order):" > ${SOURCE_DIR}/AUTHORS
+echo "" >> ${SOURCE_DIR}/AUTHORS
+echo "`git log --pretty=format:'- %an <%ae>' | grep -v dependabot | sort | uniq`" >> ${SOURCE_DIR}/AUTHORS
+echo "" >> ${SOURCE_DIR}/AUTHORS
+echo "Use the following command to query the author's commit:" >> ${SOURCE_DIR}/AUTHORS
+echo "   git log --author='author'" >> ${SOURCE_DIR}/AUTHORS
+echo "Or see [ChangeLog](ChangeLog)" >> ${SOURCE_DIR}/AUTHORS

release.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+#! Author: Kang Lin <kl222@126.com>
+
+set -e
+
+SOURCE_DIR=`pwd`
+
+if [ -n "$1" ]; then
+    VERSION=$1
+
+    if [ -n "$2" ]; then
+        MESSAGE=$2
+    fi
+    PRE_TAG=`git tag --sort=-creatordate | grep -v -E "upstream|docker|debian" | head -n 1`
+    echo "Current version: $PRE_TAG. The version to will be set: $1 $MESSAGE"
+else
+    echo "usage: $0 release_version [release_message]"
+    echo "   release_version format: [v][0-9].[0-9].[0-9]"
+    exit -1
+fi
+
+if [ -z "${MESSAGE}" ]; then
+    MESSAGE="Release $1"
+else
+    MESSAGE="Release $1: ${MESSAGE}"
+fi
+
+VERSION=$1
+
+sed -i "s/SET(BUILD_VERSION \".*)/SET(BUILD_VERSION \"${VERSION}\")/g" ${SOURCE_DIR}/CMakeLists.txt
+sed -i "s/#define TURN_SERVER_VERSION .*/#define TURN_SERVER_VERSION \"${VERSION}\"/g" ${SOURCE_DIR}/src/ns_turn_defs.h
+
+# Generate ChangeLog
+if [ -f ${SOURCE_DIR}/ChangeLog ]; then
+    mv ${SOURCE_DIR}/ChangeLog ${SOURCE_DIR}/ChangeLog.tmp
+fi
+
+echo "$MESSAGE" >  ${SOURCE_DIR}/ChangeLog
+echo "" >> ${SOURCE_DIR}/ChangeLog
+echo "Changelist:" >> ${SOURCE_DIR}/ChangeLog
+echo "`git log --pretty=format:'- %s (%an <%ae>)' ${PRE_TAG}..HEAD | grep -v dependabot`" >> ${SOURCE_DIR}/ChangeLog
+echo "" >> ${SOURCE_DIR}/ChangeLog
+echo "Contributors:" >> ${SOURCE_DIR}/ChangeLog
+echo "`git log --pretty=format:'- %an <%ae>' ${PRE_TAG}..HEAD|sort|uniq`" >> ${SOURCE_DIR}/ChangeLog
+echo "" >> ${SOURCE_DIR}/ChangeLog
+
+cat ${SOURCE_DIR}/ChangeLog.tmp >> ${SOURCE_DIR}/ChangeLog
+rm ${SOURCE_DIR}/ChangeLog.tmp