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rexxiang/vs2017-offline-downloader.ps1

Last active April 18, 2017 02:28
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  1. rexxiang revised this gist Apr 18, 2017. No changes.
  2. rexxiang created this gist Apr 18, 2017.
    71 changes: 71 additions & 0 deletions vs2017-offline-downloader.ps1
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,71 @@
    Param(
    [string]$OfflineDir = ".\vs2017offline"
    )

    Set-Location $PSScriptRoot

    $installerDir = ".\.vs2017.installer"
    $installer = "$installerDir\vs_enterprise.exe"

    # download installer
    if (!(Test-Path $installer)) {
    New-Item -Path $installerDir -ItemType Directory -Force
    Invoke-WebRequest "https://aka.ms/vs/15/release/vs_enterprise.exe" -OutFile $installer
    }

    if (!(Test-Path $offlineDir)) {
    New-Item -path $offlineDir -ItemType Directory -Force
    }

    # start installer
    Start-Process $installer -ArgumentList @("--layout $offlineDir", '--all', '--lang en-US') -Wait

    # cleanup expired packages
    start-job -ArgumentList @($PSScriptRoot, $OfflineDir) -ScriptBlock {
    param($Root, $OfflineDir)

    $OfflineDir = [System.IO.Path]::Combine($Root, $OfflineDir)
    Write-Host Offline files are in $OfflineDir

    $source = @"
    using System;
    using System.IO;
    using System.Linq;
    public class DuplicationRemover {
    public static void Remove(string offlineDir) {
    var dirs = Directory.GetDirectories(offlineDir);
    var info =
    from path in dirs
    let dir = Path.GetFileName(path)
    let parts = dir.Split(new [] {','}, StringSplitOptions.RemoveEmptyEntries)
    where parts.Length > 1
    let name = parts[0]
    let version = parts.FirstOrDefault(p => p.StartsWith("version="))
    let chip = parts.FirstOrDefault(p => p.StartsWith("chip="))
    let language = parts.FirstOrDefault(p => p.StartsWith("language="))
    where version != null
    select new { name, version, chip, language, parts, path, };
    var r =
    from i1 in info
    from i2 in info
    where
    i1.name == i2.name
    && i1.chip == i2.chip
    && i1.language == i2.language
    && i1.version.CompareTo(i2.version) > 0
    select new { new_path = i1.path, old_path = i2.path };
    foreach(var dir in r) {
    Directory.Delete(dir.old_path, true);
    }
    }
    }
    "@

    Add-Type -TypeDefinition $source -ReferencedAssemblies ("System", "System.Core") -Language CSharp

    [DuplicationRemover]::Remove($OfflineDir)
    } | Receive-Job -Wait -AutoRemoveJob