Is it possible to automate the creation of a inno setup package with ant?

#include "settings.txt"

#define myver=xxx.xxx
#define tags

<exec dir="." executable="cmd" os="Windows NT">
  <arg line="/c build.bat"/>
</exec>

set isxpath="c:program filesinno setup 5"
set isx=%isxpath%iscc.exe
set iwz=myproj.iss
if not exist %isx% set errormsg=%isx% not found && goto errorhandler
%isx% "%iwz%" /O"%buildpath%" /F"MySetupper.exe" >>%logfile%
goto :eof

#define AppName "My App"
#define SrcApp "MyApp.exe"
#define FileVerStr GetFileVersion(SrcApp)
#define StripBuild(str VerStr) Copy(VerStr, 1, RPos(".", VerStr)-1)
#define AppVerStr StripBuild(FileVerStr)

[Setup]
AppName={#AppName}
AppVersion={#AppVerStr}
AppVerName={#AppName} {#AppVerStr}
UninstallDisplayName={#AppName} {#AppVerStr}
VersionInfoVersion={#FileVerStr}
VersionInfoTextVersion={#AppVerStr}
OutputBaseFilename=MyApp-{#FileVerStr}-setup

iscc.exe /dSpecialEdition ...

[Registry]
#ifdef SpecialEdition
Root: HKLM; Subkey: SoftwareMyCompanyMyApp; ValueName: SpecialEdition; ValueType: dword; ValueData: 1 ...
#endif