Windows Installer

dyn2py-installer.iss

@@ -0,0 +1,82 @@
+[Setup]
+AppId={{E924F481-6909-43F8-8469-11155A5EB9A2}
+AppName=dyn2py
+AppVersion=x.x.x
+AppPublisher=infeeeee
+AppPublisherURL=https://github.com/infeeeee/dyn2py
+AppSupportURL=https://github.com/infeeeee/dyn2py/issues
+AppUpdatesURL=https://github.com/infeeeee/dyn2py/releases/latest
+DefaultDirName={autopf}\dyn2py
+DisableProgramGroupPage=yes
+LicenseFile=LICENSE
+PrivilegesRequired=admin
+OutputBaseFilename=dyn2py-installer
+Compression=lzma
+SolidCompression=yes
+WizardStyle=modern
+ChangesEnvironment=yes
+
+[Languages]
+Name: "english"; MessagesFile: "compiler:Default.isl"
+
+[Files]
+Source: "dist\dyn2py.exe"; DestDir: "{app}"; Flags: ignoreversion
+
+
+[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}'));
+end;
+
+procedure CurUninstallStepChanged(CurUninstallStep: TUninstallStep);
+begin
+    if CurUninstallStep = usPostUninstall
+    then EnvRemovePath(ExpandConstant('{app}'));
+end;