SemVer

1.0.0.162

SemVer.psm1


if (-not ([System.Management.Automation.PSTypeName]'VersionComponent').Type) {
Add-Type -TypeDefinition @"
   public enum VersionComponent
   {
      Major = 0,
      Minor = 1,
      Patch = 2,
      Build = 3,
      Suffix = 4,
      SuffixBuild = 5,
      SuffixRevision = 6
   }
"@
}


<#

.SYNOPSIS
Updates given component of a SemVer string

.DESCRIPTION

.PARAMETER ver
SemVer string

.PARAMETER component
The version component you wish to update (Major, Minor, Patch)
Also supports prerelease data with (SuffixBuild) and (SuffixRevision)

.PARAMETER value
Value for the specified version component. If value is not provided, the function will increment current number

.PARAMETER compatibilityMode
Use compatibility mode (useful for working with nuget packages)

.EXAMPLE
Update-Version "1.0.1" Patch
1.0.2
Increment Patch component of version 1.0.1

.NOTES

.LINK

#>
function Update-Version {
    param(
        [Parameter(mandatory=$true)]$ver, 
        [VersionComponent]$component = [VersionComponent]::Patch, 
        $value = $null,
        [Alias("nuget")]
        [switch][bool] $compatibilityMode
        ) 
    
    $null = $ver -match "(?<version>[0-9]+(\.[0-9]+)*)(-(?<suffix>.*)){0,1}"
    $version = $matches["version"]
    $suffix = $matches["suffix"]
    
    $vernums = $version.Split(@('.'))
    $lastNumIdx = $component
    if ($component -lt [VersionComponent]::Suffix) {
        $lastNum = [int]::Parse($vernums[$lastNumIdx])
        
        <# for($i = $vernums.Count-1; $i -ge 0; $i--) {
            if ([int]::TryParse($vernums[$i], [ref] $lastNum)) {
                $lastNumIdx = $i
                break
            }
        }#>
        if ($value -ne $null) {
            $lastNum = $value
        }
        else {
            $lastNum++
        }
        $vernums[$component] = $lastNum.ToString()
        #each lesser component should be set to 0
        for($i = $component + 1; $i -lt $vernums.length; $i++) {
            $vernums[$i] = 0
        }
        if ($suffix -ne $null -and $suffix -match "build([0-9]+)") {
             $ver2 = [string]::Join(".", $vernums)
             if (![string]::IsNullOrEmpty($suffix)) {
                $ver2 += "-$suffix"
             }
             $ver2 = update-version $ver2 SuffixBuild -value 1
             return $ver2 
        } 
    } else {
        if ([string]::IsNullOrEmpty($suffix)) {
            #throw "version '$ver' has no suffix"
            $suffix = "build000"
        }
        
        if ($component -eq [VersionComponent]::SuffixBuild) {
            if ($suffix -match "build([0-9]+)") {
                $num = [int]$matches[1]
                if ($value -ne $null) {
                    $num = $value
                }
                else {
                    $num++
                }
                $suffix = $suffix -replace "build[0-9]+","build$($num.ToString("000"))"
            }
            else {
                throw "suffix '$suffix' does not match build[0-9] pattern"
            }
        }
        if ($component -eq [VersionComponent]::SuffixRevision) {
            $revSeparator = "+"
            if ($compatibilityMode) { $revSeparator = "-" }
        
            if ($suffix -match "build([0-9]+)\$revSeparator(?<rev>[a-fA-F0-9]+)(-|$)") {
                $rev = $Matches["rev"]
                $suffix = $suffix -replace "$rev",$value
            }
            else {
                $suffix = $suffix + "$revSeparator$value"
            }
        }
    }
    
    $ver2 = [string]::Join(".", $vernums)
    if (![string]::IsNullOrEmpty($suffix)) {
        $ver2 += "-$suffix"
    }

    return $ver2
}