1+ param (
2+ [Parameter (Mandatory = $true )]
3+ [string ] $ExtractRootPath ,
4+ [Parameter (Mandatory = $true )]
5+ [string ] $Version ,
6+ [ValidateSet (' GitHub' , ' AppVeyor' , ignorecase= $False )]
7+ [string ] $Source = " GitHub"
8+ )
9+
10+ $LatestVersionName = " latest"
11+
12+ function Test-LocalCopy
13+ {
14+ Param (
15+ [Parameter (Mandatory = $true , Position = 0 )]
16+ [string ] $ExtractPath ,
17+ [Parameter (Mandatory = $true , Position = 1 )]
18+ [string ] $FileName
19+ )
20+
21+ $FilePath = [System.IO.Path ]::Combine($ExtractPath , $FileName );
22+ if (Test-Path $FilePath )
23+ {
24+ Write-Host " Download '$FileName ' already exists."
25+ return $true ;
26+ }
27+
28+ return $false ;
29+ }
30+
31+ function Find-ArchiveUrl
32+ {
33+ param (
34+ [Parameter (Mandatory = $true , Position = 0 )]
35+ [string ] $Version ,
36+ [Parameter (Mandatory = $true , Position = 1 )]
37+ [ValidateSet (' GitHub' , ' AppVeyor' , ignorecase= $False )]
38+ [string ] $Source
39+ )
40+
41+ Write-Host " Searching for Git Extensions release '$Version ' on '$Source '."
42+ if ($Source -eq " GitHub"
43+ {
44+ return Find-ArchiveUrlFromGitHub - Version $Version ;
45+ }
46+
47+ if ($Source -eq " AppVeyor"
48+ {
49+ return Find-ArchiveUrlFromAppVeyor - Version $Version ;
50+ }
51+
52+ throw " Unable to find download URL for 'Git Extensions $Version '"
53+ }
54+
55+ function Find-ArchiveUrlFromGitHub
56+ {
57+ param (
58+ [Parameter (Mandatory = $true , Position = 0 )]
59+ [string ] $Version
60+ )
61+
62+ $BaseUrl = ' https://api.github.com/repos/gitextensions/gitextensions/releases'
63+ $SelectedRelease = $null ;
64+ if ($Version -eq $LatestVersionName )
65+ {
66+ $SelectedRelease = Invoke-RestMethod - Uri " $BaseUrl /latest"
67+ $Version = $SelectedRelease.tag_name ;
68+ Write-Host " Selected release '$ ( $SelectedRelease.name ) '."
69+ }
70+ else
71+ {
72+ $Releases = Invoke-RestMethod - Uri $BaseUrl ;
73+ foreach ($Release in $Releases )
74+ {
75+ if ($Release.tag_name -eq $Version )
76+ {
77+ Write-Host " Selected release '$ ( $Release.name ) '."
78+ $SelectedRelease = $Release ;
79+ break ;
80+ }
81+ }
82+ }
83+
84+ if (! ($null -eq $SelectedRelease ))
85+ {
86+ foreach ($Asset in $SelectedRelease.assets )
87+ {
88+ if ($Asset.content_type -eq " application/zip" -and $Asset.name.Contains (' Portable'
89+ {
90+ Write-Host " Selected asset '$ ( $Asset.name ) '."
91+ return $Version , $Asset.browser_download_url ;
92+ }
93+ }
94+ }
95+
96+ throw " Unable to find download URL for 'Git Extensions $Version ' on GitHub"
97+ }
98+
99+ function Find-ArchiveUrlFromAppVeyor
100+ {
101+ param (
102+ [Parameter (Mandatory = $true , Position = 0 )]
103+ [string ] $Version
104+ )
105+
106+ $UrlVersion = $Version ;
107+ if ($UrlVersion.StartsWith (" v"
108+ {
109+ $UrlVersion = $UrlVersion.Substring (1 );
110+ }
111+
112+ $UrlBase = " https://ci.appveyor.com/api"
113+
114+ try
115+ {
116+ if ($Version -eq $LatestVersionName )
117+ {
118+ $Url = " $UrlBase /projects/gitextensions/gitextensions/branch/master"
119+ }
120+ else
121+ {
122+ $Url = " $UrlBase /projects/gitextensions/gitextensions/build/$UrlVersion "
123+ }
124+
125+ $BuildInfo = Invoke-RestMethod - Uri $Url ;
126+ $Version = " v$ ( $BuildInfo.build.version ) "
127+ $Job = $BuildInfo.build.jobs [0 ];
128+ if ($Job.Status -eq " success"
129+ {
130+ $JobId = $Job.jobId ;
131+ Write-Host " Selected build job '$JobId '."
132+
133+ $AssetsUrl = " $UrlBase /buildjobs/$JobId /artifacts"
134+ $Assets = Invoke-RestMethod - Method Get - Uri $AssetsUrl ;
135+ foreach ($Asset in $Assets )
136+ {
137+ if ($Asset.type -eq " zip" -and $Asset.FileName.Contains (' Portable'
138+ {
139+ Write-Host " Selected asset '$ ( $Asset.FileName ) '."
140+ return $Version , ($AssetsUrl + " /" + $Asset.FileName );
141+ }
142+ }
143+ }
144+ }
145+ catch
146+ {
147+ if (! ($_.Exception.Response.StatusCode -eq 404 ))
148+ {
149+ throw ;
150+ }
151+ }
152+
153+ throw " Unable to find download URL for 'Git Extensions $Version ' on AppVeyor"
154+ }
155+
156+ function Get-Application
157+ {
158+ param (
159+ [Parameter (Mandatory = $true , Position = 0 )]
160+ [string ] $ArchiveUrl ,
161+ [Parameter (Mandatory = $true , Position = 1 )]
162+ [string ] $ExtractPath ,
163+ [Parameter (Mandatory = $true , Position = 2 )]
164+ [string ] $FileName
165+ )
166+
167+ if (! (Test-Path $ExtractPath ))
168+ {
169+ New-Item - ItemType directory - Path $ExtractPath | Out-Null ;
170+ }
171+
172+ $FilePath = [System.IO.Path ]::Combine($ExtractPath , $FileName );
173+
174+ Write-Host " Downloading '$ArchiveUrl '..."
175+
176+ Invoke-WebRequest - Uri $ArchiveUrl - OutFile $FilePath ;
177+ Expand-Archive $FilePath - DestinationPath $ExtractPath - Force;
178+
179+ Write-Host " Application extracted to '$ExtractPath '."
180+ }
181+
182+ function Get-ZipFileName {
183+ param (
184+ [Parameter (Mandatory = $true , Position = 0 )]
185+ [string ] $Version
186+ )
187+
188+ return " GitExtensions-$Version .zip"
189+ }
190+
191+
192+ Push-Location $PSScriptRoot ;
193+ try
194+ {
195+ $ExtractRootPath = Resolve-Path $ExtractRootPath ;
196+ Write-Host " Extraction root path is '$ExtractRootPath '."
197+
198+ [Net.ServicePointManager ]::SecurityProtocol = [Net.SecurityProtocolType ]::Tls12;
199+
200+ if (! ($Version -eq $LatestVersionName ))
201+ {
202+ $FileName = Get-ZipFileName - Version $Version ;
203+ if (Test-LocalCopy - ExtractPath $ExtractRootPath - FileName $FileName )
204+ {
205+ exit 0 ;
206+ }
207+ }
208+
209+ $SelectedVersion , $DownloadUrl = Find-ArchiveUrl - Version $Version - Source $Source ;
210+ if ($Version -eq $LatestVersionName )
211+ {
212+ $FileName = Get-ZipFileName - Version $SelectedVersion ;
213+ if (Test-LocalCopy - ExtractPath $ExtractRootPath - FileName $FileName )
214+ {
215+ exit 0 ;
216+ }
217+ }
218+
219+ Get-Application - ArchiveUrl $DownloadUrl - ExtractPath $ExtractRootPath - FileName $FileName ;
220+ }
221+ catch
222+ {
223+ Write-Host $_.Exception - ForegroundColor Red;
224+ exit -1 ;
225+ }
226+ finally
227+ {
228+ Pop-Location ;
229+ }
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