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# Based on and modified from the original script: https://github.com/tomlarse/Install-Git/blob/master/Install-Git/Install-Git.ps1
<#
.SYNOPSIS
Installs or updates git for windows.
.DESCRIPTION
Borrowed heavily from https://github.com/PowerShell/vscode-powershell/blob/develop/scripts/Install-VSCode.ps1. Sourcecode available at https://github.com/tomlarse/Install-Git
Install and run with Install-Script Install-Git; Install-Git.ps1
.EXAMPLE
Install-Git.ps1
.NOTES
This script is licensed under the MIT License:
Copyright (c) Tom-Inge Larsen
Copyright (c) Microsoft Corporation.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
#>
Param()
if (!($IsLinux -or $IsOSX))
{
# Import function to reload without needing to re-open Powershell
iex (irm refreshenv.tc.ht)
# Continue...
$gitExePath = "C:\Program Files\Git\bin\git.exe"
#Added TLS negotiation Fork jmangan68
[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12;
foreach ($asset in (Invoke-RestMethod https://api.github.com/repos/git-for-windows/git/releases/latest).assets)
{
if ($asset.name -match 'Git-\d*\.\d*\.\d*.\d*-64-bit\.exe')
{
$dlurl = $asset.browser_download_url
$newver = $asset.name
}
}
try
{
$ProgressPreference = 'SilentlyContinue'
if (!(Test-Path $gitExePath))
{
Write-Host "`nDownloading latest stable git..." -ForegroundColor Yellow
Remove-Item -Force $env:TEMP\git-stable.exe -ErrorAction SilentlyContinue
Invoke-WebRequest -Uri $dlurl -OutFile $env:TEMP\git-stable.exe
Write-Host "`nInstalling git..." -ForegroundColor Yellow
Start-Process -Wait $env:TEMP\git-stable.exe -ArgumentList /silent
Update-SessionEnvironment
}
else
{
$updateneeded = $false
Write-Host "`ngit is already installed. Check if possible update..." -ForegroundColor Yellow
(git version) -match "(\d*\.\d*\.\d*)" | Out-Null
$installedversion = $matches[0].split('.')
$newver -match "(\d*\.\d*\.\d*)" | Out-Null
$newversion = $matches[0].split('.')
if (($newversion[0] -gt $installedversion[0]) -or ($newversion[0] -eq $installedversion[0] -and $newversion[1] -gt $installedversion[1]) -or ($newversion[0] -eq $installedversion[0] -and $newversion[1] -eq $installedversion[1] -and $newversion[2] -gt $installedversion[2]))
{
$updateneeded = $true
}
if ($updateneeded)
{
Write-Host "`nUpdate available. Downloading latest stable git..." -ForegroundColor Yellow
Remove-Item -Force $env:TEMP\git-stable.exe -ErrorAction SilentlyContinue
Invoke-WebRequest -Uri $dlurl -OutFile $env:TEMP\git-stable.exe
Write-Host "`nInstalling update..." -ForegroundColor Yellow
$sshagentrunning = get-process ssh-agent -ErrorAction SilentlyContinue
if ($sshagentrunning)
{
Write-Host "`nKilling ssh-agent..." -ForegroundColor Yellow
Stop-Process $sshagentrunning.Id
}
Update-SessionEnvironment
Start-Process -Wait $env:TEMP\git-stable.exe -ArgumentList /silent
}
else
{
Write-Host "`nNo update available. Already running latest version..." -ForegroundColor Yellow
}
}
Write-Host "`nInstallation complete!`n`n" -ForegroundColor Green
}
finally
{
$ProgressPreference = 'Continue'
}
}
else
{
Write-Error "This script is currently only supported on the Windows operating system."
}