Bump a software project's VERSION, add the CHANGES, and tag with GIT

bump-version.sh

#!/bin/bash

# Thanks to @pete-otaqui for the initial gist:
# https://gist.github.com/pete-otaqui/4188238
# Original version modified & translated by Patrick Pézier

# works with a file called VERSION in the current directory,
# the contents of which should be a semantic version number
# such as "1.2.3"
# More information about semantic versioning:
# https://semver.org/

# this script will display the current version, automatically
# suggest a "minor" version update, and ask for input to use
# the suggestion, or a newly entered value.

# once the new version number is determined, the script will
# pull a list of changes from git history, prepend this to
# a file called CHANGELOG.txt (under the title of the new
# version number) and create a GIT tag.

if [ -f VERSION ]; then
    BASE_STRING=`cat VERSION`
    BASE_LIST=(`echo $BASE_STRING | tr '.' ' '`)
    V_MAJOR=${BASE_LIST[0]}
    V_MINOR=${BASE_LIST[1]}
    V_PATCH=${BASE_LIST[2]}
    echo "Version actuelle : $BASE_STRING"
    V_MINOR=$((V_MINOR + 1))
    V_PATCH=0
    SUGGESTED_VERSION="$V_MAJOR.$V_MINOR.$V_PATCH"
    read -p "Saisir un nouveau numéro de version [$SUGGESTED_VERSION]: " INPUT_STRING
    if [ "$INPUT_STRING" = "" ]; then
        INPUT_STRING=$SUGGESTED_VERSION
    fi
    echo "La nouvelle version sera $INPUT_STRING"
    echo $INPUT_STRING > VERSION
    echo "Version $INPUT_STRING :" > tmpfile
    git log --pretty=format:" - %s" "v$BASE_STRING"...HEAD >> tmpfile
    echo "" >> tmpfile
    echo "" >> tmpfile
    cat CHANGELOG.txt >> tmpfile
    mv tmpfile CHANGELOG.txt
    git add CHANGELOG.txt VERSION
    git commit -m "Version montée à $INPUT_STRING"
    git tag -a -m "Étiquetage (tag) de la version $INPUT_STRING" "v$INPUT_STRING"
    git push origin --tags
else
    echo "Fichier VERSION introuvable"
    read -p "Créer un fichier de version et démarrer de zéro ? [o]" RESPONSE
    if [ "$RESPONSE" = "" ]; then RESPONSE="o"; fi
    if [ "$RESPONSE" = "O" ]; then RESPONSE="o"; fi
    if [ "$RESPONSE" = "Oui" ]; then RESPONSE="o"; fi
    if [ "$RESPONSE" = "oui" ]; then RESPONSE="o"; fi
    if [ "$RESPONSE" = "OUI" ]; then RESPONSE="o"; fi
    if [ "$RESPONSE" = "o" ]; then
        echo "0.1.0" > VERSION
        echo "Version 0.1.0" > CHANGELOG.txt
        git log --pretty=format:" - %s" >> CHANGELOG.txt
        echo "" >> CHANGELOG.txt
        echo "" >> CHANGELOG.txt
        git add VERSION CHANGELOG.txt
        git commit -m "Ajout des fichiers VERSION et CHANGELOG.txt, Version montée à v0.1.0"
        git tag -a -m "Étiquetage (tag) de la version 0.1.0" "v0.1.0"
        git push origin --tags
    fi

fi