DownloadGithub

1.1

DownloadGithub.ps1


<#PSScriptInfo
 
.VERSION 1.1
 
.GUID 2c1b4da3-c20e-475a-8584-70326e3bee43
 
.AUTHOR Dima Stadub
 
.COMPANYNAME
 
.COPYRIGHT
 
.TAGS github.com github download zip archive
 
.LICENSEURI
 
.PROJECTURI https://github.com/stadub/PowershellScripts
 
.ICONURI
 
.EXTERNALMODULEDEPENDENCIES
 
.REQUIREDSCRIPTS
 
.EXTERNALSCRIPTDEPENDENCIES
 
.RELEASENOTES
 
 
#> 


<#
.SYNOPSIS
  Download github repo and execute repo script
.DESCRIPTION
  Allow to download git repo from github unpack it and start config script
.EXAMPLE
   DownloadGithub "https://github.com/stadub/CmdScripts/archive/master.zip" "C:\Sources\Cmd" "InstallBin.cmd"
.PARAMETER githubRepo
   Github repository url(browser url pointed on repo)
.PARAMETER destDir
   Destanation folder where will be unpacked github repo
.PARAMETER installScrip (optional)
   Script ile to be invocked after repo unpacking
  #>
param(
  [parameter(Mandatory=$true)]
  [string]$githubRepo,
  [parameter(Mandatory=$true)]
  [string]$destDir,
  [string]$installScrip=""
)
$githubUriRegex="(?<Scheme>https://)(?<Host>github.com)/(?<User>\w*)/(?<Repo>\w*)(/archive/(?<Branch>master).zip)?"

$githubMatch = [regex]::Match($githubRepo,$githubUriRegex)

function GetGroupValue($match, [string]$group, [string]$default=""){
    $val=$match.Groups[$group].Value
    Write-Debug $val
    if($val){
        return $val
    }
    return $default
}

if( ! $(GetGroupValue $githubMatch "Host") ){
    throw [System.ArgumentException] "Incorrect 'Host' value. The 'github.com' domain expected"
    #Write-Error -Message "Incorrect 'Host' value. The 'github.com' domain expected" -Category InvalidArgument
}

#Becouse url can be in different formats
$githubUrl='https://github.com/{0}/{1}/archive/{2}.zip' -f 
                        $(GetGroupValue $githubMatch "User"),
                        $(GetGroupValue $githubMatch "Repo"), 
                        $(GetGroupValue $githubMatch "Branch" "master")


$file = [System.IO.Path]::GetTempFileName() + ".zip"

New-Object System.Net.WebClient|%{$_.DownloadFile($githubUrl,$file);}
$sh = New-Object -ComObject Shell.Application

$archive=$sh.NameSpace($file).Items();

#archive contain root folder. So get folder content
$archiveFilder=$archive.Item(0).GetFolder.Items()

if ( -Not $(Test-Path -path $destDir)){
    mkdir $destDir
}
else{
    Write-Warning "'$destDir' already exists."  -warningaction Inquire
}

$dst=$sh.NameSpace($destDir)
$dst.CopyHere($archiveFilder, 272)

if( $installScrip ){
    if ( Test-Path -path $destDir\$installScrip){
        &  $destDir\$installScrip
    }
    else{
        Write-Warning "Installer script is not found."
    }
}