benhow.utils.gitbehind.psm1
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function Get-GitBehindStatus { [CmdletBinding()] param ( [string] $differenceBranch = 'origin/master', [string] $referenceBranch, [switch] $ShowAhead = $false ) $gitCmd = "git status" $BranchStatus = & Invoke-Expression $gitCmd if ($null -eq $BranchStatus) { throw "Error calling git status. Are you in a repository? Is git installed?" } Write-Verbose ($BranchStatus | out-string) if ([string]::IsNullOrEmpty($referenceBranch)) { $referenceBranch = $BranchStatus[0].Replace('On branch ','') } Write-Verbose "Comparing local branch '$referenceBranch' with remote branch '$differenceBranch'.." $gitCmd = "git fetch --all" Write-Verbose "Calling $gitCmd" $gitFetch = & Invoke-Expression $gitCmd 2>&1 if ($null -eq $gitFetch) { throw "Error calling git fetch." } Write-Verbose $gitFetch $gitCmd = "git rev-list --left-right --count $differenceBranch...$referenceBranch" Write-Verbose "Calling $gitCmd" $gitRevList = & Invoke-Expression $gitCmd if ($null -eq $gitRevList) { throw "Error calling git rev-list. Is the remote branch '$differenceBranch' correct?" } Write-Verbose $gitRevList $behindBy = ($gitRevList -split '\t')[0] $aheadBy = ($gitRevList -split '\t')[1] if ($behindBy -gt 0) { $fgCol = 'magenta' } else { $fgCol = 'green' } $Msg = "Branch '$referenceBranch' is behind '$differenceBranch' by $behindBy commits" if ($ShowAhead) { $Msg = "$Msg and ahead by $aheadBy commits" } else { $Msg = "$Msg." } Write-Host $Msg -ForegroundColor $fgCol } |