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stevanfreeborn.options/scripts/determine-version.sh
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#!/bin/bash
branch="${1:-main}"
tag=$(git describe --tags --abbrev=0 2>/dev/null)
base="${tag:-$branch}"
commits=$(git log "$base..HEAD" --format="%s")
major=0
minor=0
patch=0
while IFS= read -r message; do
if [[ -n "$message" ]] && [[ "$message" =~ " BREAKING CHANGE|!:" ]]; then
major=1
elif [[ -n "$message" ]] && [[ "$message" =~ feat(\(.*\))?: ]]; then
minor=1
elif [[ -n "$message" ]] && [[ "$message" =~ fix(\(.*\))?: ]]; then
patch=1
fi
done <<< "$commits"
if [[ "$major" -eq 1 ]]; then
minor=0
patch=0
elif [[ "$minor" -eq 1 ]]; then
patch=0
elif [[ "$patch" -eq 0 ]] && [[ -n "$commits" ]]; then
patch=1
fi
currentVersion="0.0.0"
hasExistingTag=false
if [[ -n "$tag" ]]; then
hasExistingTag=true
currentVersion="${tag#v}"
fi
IFS='.' read -r majorCurrent minorCurrent patchCurrent <<< "$currentVersion"
majorNew=$((majorCurrent + major))
if [[ "$major" -eq 1 ]]; then
minorNew=0
else
minorNew=$((minorCurrent + minor))
fi
if [[ "$major" -eq 1 ]] || [[ "$minor" -eq 1 ]]; then
patchNew=0
else
patchNew=$((patchCurrent + patch))
fi
if [[ "$majorNew" -eq "$majorCurrent" ]] && [[ "$minorNew" -eq "$minorCurrent" ]] && [[ "$patchNew" -eq "$patchCurrent" ]]; then
if [[ "$hasExistingTag" == "false" ]]; then
version="0.0.0"
[[ -n "$GITHUB_OUTPUT" ]] && echo "VERSION=$version" >> "$GITHUB_OUTPUT" || echo "VERSION=$version"
echo "First release: publishing version 0.0.0"
else
exit 0
fi
else
version="$majorNew.$minorNew.$patchNew"
[[ -n "$GITHUB_OUTPUT" ]] && echo "VERSION=$version" >> "$GITHUB_OUTPUT" || echo "VERSION=$version"
fi