<# .SYNOPSIS Writes a changelog from Git commits .DESCRIPTION This PowerShell script writes an automated changelog in Markdown format to the console by using the Git commits only. NOTE: For proper sorting the Git commits should start with verbs such as 'Add', 'Fix', 'Update', etc. You may also redirect the output into a file for later use. .PARAMETER RepoDir Specifies the path to the local Git repository (default is current working dir) .EXAMPLE PS> ./write-changelog.ps1 Changelog of PowerShell ======================= ... .LINK https://github.com/fleschutz/PowerShell .NOTES Author: Markus Fleschutz | License: CC0 #> param([string]$RepoDir = "$PWD") try { [system.threading.thread]::currentthread.currentculture = [system.globalization.cultureinfo]"en-US" Write-Progress "⏳ (1/6) Searching for Git executable..." $null = (git --version) if ($lastExitCode -ne "0") { throw "Can't execute 'git' - make sure Git is installed and available" } Write-Progress "⏳ (2/6) Checking local repository..." if (!(Test-Path "$RepoDir" -pathType container)) { throw "Can't access folder: $RepoDir" } $RepoDirName = (Get-Item "$RepoDir").Name Write-Progress "⏳ (3/6) Fetching the latest commits..." & git -C "$RepoDir" fetch --all --force --quiet if ($lastExitCode -ne "0") { throw "'git fetch --all' failed with exit code $lastExitCode" } Write-Progress "⏳ (4/6) Listing all Git commit messages..." $commits = (git -C "$RepoDir" log --boundary --pretty=oneline --pretty=format:%s | sort -u) Write-Progress "⏳ (5/6) Sorting the Git commit messages..." $new = @() $fixes = @() $updates = @() $various = @() foreach($commit in $commits) { if ($commit -like "New*") { $new += $commit } elseif ($commit -like "Add*") { $new += $commit } elseif ($commit -like "Create*") { $new += $commit } elseif ($commit -like "Fix*") { $fixes += $commit } elseif ($commit -like "Hotfix*") { $fixes += $commit } elseif ($commit -like "Bugfix*") { $fixes += $commit } elseif ($commit -like "Update*") { $updates += $commit } elseif ($commit -like "Updating*") { $updates += $commit } elseif ($commit -like "Updaate*") { $updates += $commit } elseif ($commit -like "Adapt*") { $updates += $commit } elseif ($commit -like "Improve*") { $updates += $commit } elseif ($commit -like "Change*") { $updates += $commit } elseif ($commit -like "Changing*") { $updates += $commit } else { $various += $commit } } Write-Progress "⏳ (6/6) Listing all contributors..." $contributors = (git -C "$RepoDir" log --format='%aN' | sort -u) Write-Progress -completed " " $Today = (Get-Date).ToShortDateString() Write-Output " " Write-Output "Changelog of $RepoDirName as of $Today" Write-Output "======================================" Write-Output " " Write-Output "🚀 New Features" Write-Output "---------------" foreach($c in $new) { Write-Output "* $c" } Write-Output " " Write-Output "⚠️ Bug Fixes" Write-Output "------------" foreach($c in $fixes) { Write-Output "* $c" } Write-Output " " Write-Output "🎉 Updates" Write-Output "----------" foreach($c in $updates) { Write-Output "* $c" } Write-Output " " Write-Output "🔦 Various" Write-Output "----------" foreach($c in $various) { Write-Output "* $c" } Write-Output " " Write-Output "🥇 Contributors" Write-Output "---------------" foreach($c in $contributors) { Write-Output "* $c" } exit 0 # success } catch { Write-Error $_.Exception.ToString() exit 1 }