Revert "Fix powershell script for non-windows users"

README.md

@@ -49,14 +49,6 @@ Make sure to source `jabba.sh` in your environment if you skip it:
 export JABBA_VERSION=...
 [ -s "$JABBA_HOME/jabba.sh" ] && source "$JABBA_HOME/jabba.sh"
 ```
-> (in powershell)
-
-```powershell
-[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
-Invoke-Expression (
-  Invoke-WebRequest https://github.com/shyiko/jabba/raw/master/install.ps1 -UseBasicParsing
-).Content
-```
 
 > In [fish](https://fishshell.com/) command looks a little bit different -
 > export JABBA_VERSION=...

install.ps1

@@ -1,25 +1,7 @@
 $ErrorActionPreference = "Stop"
 
-$sep = [IO.Path]::DirectorySeparatorChar
-$jabbaHome = if ($env:JABBA_HOME) { 
-    $env:JABBA_HOME 
-} else { 
-    if ($env:JABBA_DIR) { 
-        $env:JABBA_DIR 
-    } else {
-        if($env:USERPROFILE){
-            "$env:USERPROFILE" + $sep + ".jabba" 
-        }else{
-            "$env:HOME" + $sep + ".jabba"
-        }
-    } 
-}
+$jabbaHome = if ($env:JABBA_HOME) { $env:JABBA_HOME } else { if ($env:JABBA_DIR) { $env:JABBA_DIR } else { "$env:USERPROFILE\.jabba" } }
 $jabbaVersion = if ($env:JABBA_VERSION) { $env:JABBA_VERSION } else { "latest" }
-# The Windows values of the Platform enum are:
-# 0 (Win32NT), 1 (Win32S), 2 (Win32Windows) and 3 (WinCE).
-# Other values are larger and indicate non Windows operating systems
-$isOnWindows = [System.Environment]::OSVersion.Platform.value__ > 3
-$jabbaExecutableName = $isOnWindows ? "jabba.exe" : "jabba"
 
 if ($jabbaVersion -eq "latest")
 {
@@ -43,35 +25,17 @@ if ($env:JABBA_MAKE_INSTALL -eq "true")
 }
 else
 {
-    # $isOnWindows, see top of the file
-    # macOS enum value: 6
-    # Unix enum value: 4
-    if($isOnWindows){
-        Invoke-WebRequest https://github.com/shyiko/jabba/releases/download/$jabbaVersion/jabba-$jabbaVersion-windows-amd64.exe -UseBasicParsing -OutFile $jabbaHome/bin/$jabbaExecutableName
-    }
-    elseif([System.Environment]::OSVersion.Platform.value__ -eq 4 || [System.Environment]::OSVersion.Platform.value__ -eq 6){
-        Invoke-WebRequest https://github.com/shyiko/jabba/releases/download/$jabbaVersion/jabba-$jabbaVersion-darwin-amd64 -UseBasicParsing -OutFile $jabbaHome/bin/$jabbaExecutableName
-    }else{
-        $osArch = [System.Environment]::Is64BitOperatingSystem ? "amd64" : "386"
-        Invoke-WebRequest https://github.com/shyiko/jabba/releases/download/$jabbaVersion/jabba-$jabbaVersion-linux-${OSARCH} -UseBasicParsing -OutFile $jabbaHome/bin/$jabbaExecutableName
-    }
+    Invoke-WebRequest https://github.com/shyiko/jabba/releases/download/$jabbaVersion/jabba-$jabbaVersion-windows-amd64.exe -UseBasicParsing -OutFile $jabbaHome/bin/jabba.exe
 }
 
 $ErrorActionPreference="SilentlyContinue"
-
-if($isOnWindows){
-    & "$jabbaHome\bin\$jabbaExecutableName" --version | Out-Null
-}else{
-	chmod a+x "$jabbaHome/bin/$jabbaExecutableName"
-    & "$jabbaHome/bin/$jabbaExecutableName" --version | Out-Null
-}
-
+& $jabbaHome\bin\jabba.exe --version | Out-Null
 $binaryValid = $?
 $ErrorActionPreference="Continue"
 if (-not $binaryValid)
 {
-    Write-Host -ForegroundColor Yellow @"
-$jabbaHome\bin\$jabbaExecutableName does not appear to be a valid binary.
+    Write-Host @"
+$jabbaHome\bin\jabba does not appear to be a valid binary.
 
 Check your Internet connection / proxy settings and try again.
 if the problem persists - please create a ticket at https://github.com/shyiko/jabba/issues.
@@ -85,7 +49,7 @@ if the problem persists - please create a ticket at https://github.com/shyiko/ja
 function jabba
 {
     `$fd3=`$([System.IO.Path]::GetTempFileName())
-    `$command="& '$jabbaHome\bin\$jabbaExecutableName' `$args --fd3 ```"`$fd3```""
+    `$command="& '$jabbaHome\bin\jabba.exe' `$args --fd3 ```"`$fd3```""
     & { `$env:JABBA_SHELL_INTEGRATION="ON"; Invoke-Expression `$command }
     `$fd3content=`$(Get-Content `$fd3)
     if (`$fd3content) {
@@ -117,6 +81,6 @@ else
 
 Write-Host @"
 
-Installation completed (you might need to restart your terminal for the jabba command to be available)
+Installation completed
 (if you have any problems please report them at https://github.com/shyiko/jabba/issues)
 "@