public/Get-TagNext.ps1
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function Get-TagNext { [CmdletBinding()] param ( [Parameter()] [ValidateSet('calver', 'semver')] [string]$TagConvention ) try { if ($PSCmdlet.ShouldProcess("<tag> of Convention '$TagConvention'", 'get')) { $tagMostRecent = Execute-Command { git describe --tags --abbrev=0 } -ErrorAction Continue | Select-Object -Last 1 if ($TagConvention) { if ($tagMostRecent) { if ($TagConvention -eq 'calver' -and $tagMostRecent -notmatch '^\d{8}\.\d+\.\d+$') { throw "-TagConvention is calver but most recent tag is not calver" } if ($TagConvention -eq 'semver' -and ($tagMostRecent -notmatch '^v?\d+\.\d+\.\d+$' -or $tagMostRecent -match '^\d{8}\.\d+\.\d+$')) { throw "-TagConvention is semver but most recent tag is not semver" } }else { "No tags found in this repo. Using specified -TagConvention" | Write-Verbose } }else { if ($tagMostRecent) { "Tag convention will be determined based on previous tags: $TagConvention" | Write-Verbose $TagConvention = if ($tagMostRecent -match '^\d{8}\.\d+\.\d+$') { 'calver' }elseif ($tagMostRecent -match '^v?\d+\.\d+\.\d+$') { 'semver' }else { throw "Most recent tag is not in calver or semver format" } }else { throw "No tags found in this repo. Please specify a -TagConvention" } } "Tag convention: $TagConvention" | Write-Verbose $commitTitles = if (!$tagMostRecent ) { Execute-Command { git log master --format=%s } -ErrorAction Stop }else { Execute-Command { git log "$tagMostRecent..master" --format=%s } -ErrorAction Stop } if (!$commitTitles) { throw "No commits found between 'master' and '$tagMostRecent'" } $major = 0 $minor = 0 $patch = 0 foreach ($t in $commitTitles) { if ($t -match '^(breaking)') { $major++ }elseif ($t -match '^(enhancement|feature|refactor)') { $minor++ }elseif ($t -match '^(chore|docs|fix|hotfix|style)') { $patch++ } } "Major commits or PRs: $major, Minor commits or PRs: $minor, Patch commits or PRs: $patch" | Write-Verbose if ($TagConvention -eq 'calver') { # Calver. E.g. 20230910.0.0 if ($tagMostRecent) { $tagMostRecentV = [version]($tagMostRecent -replace '^v', '') if ("$( $tagMostRecentV.Major )" -eq (Get-Date -Format 'yyyyMMdd')) { if ($major) { "$( Get-Date -Format 'yyyyMMdd' ).$( $tagMostRecentV.Minor + 1).0" # E.g. 20230910.0.0 -> 20230910.1.0 }elseif ($minor) { "$( Get-Date -Format 'yyyyMMdd' ).$( $tagMostRecentV.Minor + 1).0" # E.g. 20230910.0.0 -> 20230910.1.0 }elseif ($patch) { "$( Get-Date -Format 'yyyyMMdd' ).$( $tagMostRecentV.Minor ).$( $tagMostRecentV.Build + 1 )" # E.g. 20230910.0.0 -> 20230910.0.1 }else { # Should not arrive here throw "Couldn't determine Calver tag, because the commit messages do not follow Conventional Commits." } }else { "$( Get-Date -Format 'yyyyMMdd' ).0.0" # E.g. 20230910.0.0 } }else { "$( Get-Date -Format 'yyyyMMdd' ).0.0" # E.g. 20230910.0.0 } } if ($TagConvention -eq 'semver') { # Semver. E.g. v0.0.1 or 0.0.1 if ($tagMostRecent) { $v = if ($tagMostRecent -match '^v') { 'v' } else { '' } $tagMostRecentV = [version]($tagMostRecent -replace '^v', '') if ($major) { "$v$( $tagMostRecentV.Major + 1).0.0" # E.g. v0.0.1 -> v1.0.0 }elseif ($minor) { "$v$( $tagMostRecentV.Major).$( $tagMostRecentV.Minor + 1).0" # E.g. v0.0.1 -> v0.1.0 }elseif ($patch) { "$v$( $tagMostRecentV.Major).$( $tagMostRecentV.Minor ).$( $tagMostRecentV.Build + 1 )" # E.g. v0.0.1 -> v0.0.2 }else { # Should not arrive here throw "Couldn't determine Semver tag, because the commit messages do not follow Conventional Commits." } }else { $v = 'v' if ($major) { "$( $v )1.0.0" }elseif ($minor) { "$( $v )0.1.0" }elseif ($patch) { "$( $v )0.0.1" }else { # Should not arrive here throw "Couldn't determine Semver tag" } } } } }catch { if ($ErrorActionPreference -eq 'Stop') { throw } if ($ErrorActionPreference -eq 'Continue') { $_ | Write-Error -ErrorAction Continue } } } |