Functions/Copy-GitRepository.ps1
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# Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. using namespace System.Management.Automation function Copy-GitRepository { <# .SYNOPSIS Clones a Git repository. .DESCRIPTION The `Copy-GitRepository` function clones a Git repository from the URL specified by `Uri` to the path specified by `DestinationPath` and checks out the `master` branch. If the repository requires authentication, pass the username/password via the `Credential` parameter. To clone a local repository, pass a file system path to the `Uri` parameter. .EXAMPLE Copy-GitRepository -Uri 'https://github.com/webmd-health-services/PowerGit' -DestinationPath PowerGit #> param( # The URI or path to the source repository to clone. [Parameter(Mandatory, Position = 0)] [string] $Source, # The directory where the repository should be cloned to. Must not exist or be empty. [string] $DestinationPath, # The credentials to use to connect to the source repository. [pscredential] $Credential, # Returns a `System.IO.DirectoryInfo` object for the new copy's `.git` directory. [Switch] $PassThru ) Set-StrictMode -Version 'Latest' Use-CallerPreference -Cmdlet $PSCmdlet -Session $ExecutionContext.SessionState $Source = ConvertTo-GitFullPath -Uri $Source if (-not $DestinationPath) { $DestinationPath = Join-Path $PWD (Split-Path $Source -LeafBase) } $DestinationPath = ConvertTo-GitFullPath -Path $DestinationPath $options = [libgit2sharp.CloneOptions]::new() $credentialsProviderCalled = $false $options.CredentialsProvider = { param([string]$Url, [string]$UsernameForUrl, [LibGit2Sharp.SupportedCredentialTypes]$Types) Write-Verbose "Credentials required" if ($credentialsProviderCalled) { $Credential = Get-Credential -Title "Wrong credentials provided for $Url" } Set-Variable -Name credentialsProviderCalled -Value $true -Scope 1 if (-not $Credential) { $Credential = Get-Credential -Title "Authentication required for $Url" } $gitCredential = [LibGit2Sharp.SecureUsernamePasswordCredentials]::new() $gitCredential.Username = $Credential.UserName $gitCredential.Password = $Credential.Password return $gitCredential } $cancel = $false $options.OnProgress = { param([string] $serverProgressOutput) try { if ($ProgressPreference -ne 'SilentlyContinue') { if ($serverProgressOutput -match '^(.+):\s+(\d+)% \((\d+/\d+)\)') { # Compressing objects: 0% (1/123) # Counting objects: 3% (11/550) if ($ProgressPreference -ne 'SilentlyContinue') { Write-Progress ` -Activity $Matches[1] ` -PercentComplete $Matches[2] ` -Status $Matches[3] } } elseif ($serverProgressOutput -match '^(.+)(?::)?\s+(\d+)') { # Enumerating objects: 576, done. # Counting objects 4 if ($ProgressPreference -ne 'SilentlyContinue') { Write-Progress ` -Activity $Matches[1] ` -PercentComplete -1 ` -Status $Matches[2] } } elseif (-not [string]::IsNullOrWhiteSpace($serverProgressOutput)) { Write-Information $serverProgressOutput } } Write-Verbose "OnProgress returning $(-not $cancel -and -not $PSCmdlet.Stopping)" return -not $cancel -and -not $PSCmdlet.Stopping } catch [PipelineStoppedException] { return $false } } $lastUpdated = Get-Date $options.OnTransferProgress = { param([LibGit2Sharp.TransferProgress] $TransferProgress) try { # Only update progress every 1/10th of a second, otherwise updating the progress takes longer than the clone if (((Get-Date) - $lastUpdated).TotalMilliseconds -lt 100) { return $true } if ($ProgressPreference -ne 'SilentlyContinue' -and $TransferProgress.TotalObjects -ne 0) { $numBytes = $TransferProgress.ReceivedBytes if ($numBytes -lt 1kb) { $unit = 'B' } elseif ($numBytes -lt 1mb) { $unit = 'KB' $numBytes = $numBytes / 1kb } elseif ($numBytes -lt 1gb) { $unit = 'MB' $numBytes = $numBytes / 1mb } elseif ($numBytes -lt 1tb) { $unit = 'GB' $numBytes = $numBytes / 1gb } elseif ($numBytes -lt 1pb) { $unit = 'TB' $numBytes = $numBytes / 1tb } else { $unit = 'PB' $numBytes = $numBytes / 1pb } Write-Progress -Activity ('Cloning {0} -> {1}' -f $Source, $DestinationPath) ` -Status ('{0}/{1} objects, {2:n0} {3}' -f $TransferProgress.ReceivedObjects, $TransferProgress.TotalObjects, $numBytes, $unit) ` -PercentComplete (($TransferProgress.ReceivedObjects / $TransferProgress.TotalObjects) * 100) Set-Variable -Name 'lastUpdated' -Value (Get-Date) -Scope 1 Write-Verbose "OnTransferProgress returning $(-not $cancel -and -not $PSCmdlet.Stopping)" } return -not $cancel -and -not $PSCmdlet.Stopping } catch [PipelineStoppedException] { return $false } } try { Write-Verbose "Cloning $Source to $DestinationPath" $gitPath = [LibGit2Sharp.Repository]::Clone($Source, $DestinationPath, $options) if ($PassThru -and $gitPath) { Get-Item -Path $gitPath -Force } } finally { $cancel = $true } } |