Fix/windows installer (wasmerio#178)

.appveyor.yml

@@ -1,11 +1,10 @@
-branches:
-  except:
-    - master
-
 version: "{build} ~ {branch}"
 
 os: Visual Studio 2017
 
+# Do not build feature branch with open Pull Requests
+skip_branch_with_pr: true
+
 environment:
   matrix:
     - CHANNEL: stable
@@ -20,14 +19,29 @@ install:
   - rustc -vV
   - cargo -vV
 
-artifacts:
-  - path: target\debug\wasmer.exe
-    name: wasmer.exe
-
 build_script:
   - cargo build --verbose
 
 test_script:
   - set RUST_BACKTRACE=1
   - cd ./lib/spectests && cargo test -- --test-threads 1 && cd ../..
 
+before_deploy:
+  - cd installer
+  - iscc wasmer.iss
+  - copy /y .\WasmerInstaller.exe ..\WasmerInstaller-%APPVEYOR_REPO_TAG_NAME%.exe
+  - appveyor PushArtifact WasmerInstaller-%APPVEYOR_REPO_TAG_NAME%.exe
+
+artifacts:
+  - path: WasmerInstaller-%APPVEYOR_REPO_TAG_NAME%.exe
+    name: WasmerInstaller.exe
+
+deploy:
+  description: 'WasmerInstaller'
+  artifact: /.*\.exe/
+  auth_token:
+    secure: CaKtncy7S1PWxzDUQ0p2264pe3HwxzDn5VIyRizDaa72/SVfskNcoMjwwRh0ut22
+  provider: GitHub
+  on:
+    branch: master
+    appveyor_repo_tag: true

installer/wasmer.iss

@@ -0,0 +1,71 @@
+[Setup]
+AppName=Wasmer
+AppVersion=1.5
+DefaultDirName={pf}\Wasmer
+DefaultGroupName=Wasmer
+Compression=lzma2
+SolidCompression=yes
+OutputDir=.\
+DisableProgramGroupPage=yes
+ChangesEnvironment=yes
+OutputBaseFilename=WasmerInstaller
+
+[Files]
+Source: "..\target\release\wasmer.exe"; DestDir: "{app}\bin"
+
+[Code]
+const EnvironmentKey = 'SYSTEM\CurrentControlSet\Control\Session Manager\Environment';
+
+procedure EnvAddPath(Path: string);
+var
+    Paths: string;
+begin
+    { Retrieve current path (use empty string if entry not exists) }
+    if not RegQueryStringValue(HKEY_LOCAL_MACHINE, EnvironmentKey, 'Path', Paths)
+    then Paths := '';
+
+    { Skip if string already found in path }
+    if Pos(';' + Uppercase(Path) + ';', ';' + Uppercase(Paths) + ';') > 0 then exit;
+
+    { App string to the end of the path variable }
+    Paths := Paths + ';'+ Path +';'
+
+    { Overwrite (or create if missing) path environment variable }
+    if RegWriteStringValue(HKEY_LOCAL_MACHINE, EnvironmentKey, 'Path', Paths)
+    then Log(Format('The [%s] added to PATH: [%s]', [Path, Paths]))
+    else Log(Format('Error while adding the [%s] to PATH: [%s]', [Path, Paths]));
+end;
+
+procedure EnvRemovePath(Path: string);
+var
+    Paths: string;
+    P: Integer;
+begin
+    { Skip if registry entry not exists }
+    if not RegQueryStringValue(HKEY_LOCAL_MACHINE, EnvironmentKey, 'Path', Paths) then
+        exit;
+
+    { Skip if string not found in path }
+    P := Pos(';' + Uppercase(Path) + ';', ';' + Uppercase(Paths) + ';');
+    if P = 0 then exit;
+
+    { Update path variable }
+    Delete(Paths, P - 1, Length(Path) + 1);
+
+    { Overwrite path environment variable }
+    if RegWriteStringValue(HKEY_LOCAL_MACHINE, EnvironmentKey, 'Path', Paths)
+    then Log(Format('The [%s] removed from PATH: [%s]', [Path, Paths]))
+    else Log(Format('Error while removing the [%s] from PATH: [%s]', [Path, Paths]));
+end;
+
+procedure CurStepChanged(CurStep: TSetupStep);
+begin
+    if CurStep = ssPostInstall 
+     then EnvAddPath(ExpandConstant('{app}') +'\bin');
+end;
+
+procedure CurUninstallStepChanged(CurUninstallStep: TUninstallStep);
+begin
+    if CurUninstallStep = usPostUninstall
+    then EnvRemovePath(ExpandConstant('{app}') +'\bin');
+end;

src/bin/wasmer.rs

@@ -113,6 +113,11 @@ fn main() {
     let options = CLIOptions::from_args();
     match options {
         CLIOptions::Run(options) => run(options),
+        #[cfg(not(target_os = "windows"))]
         CLIOptions::SelfUpdate => update::self_update(),
+        #[cfg(target_os = "windows")]
+        CLIOptions::SelfUpdate => {
+            println!("Self update is not supported on Windows. Use install instructions on the Wasmer homepage: https://wasmer.io");
+        }
     }
 }