static int HandleEofOrErrorIfNonConsoleShell(List <String> scriptFilename, bool success, bool nonDebugNonGuiExitOnError,
GrShell shell, GrShellDriver driver,
ref TextReader reader, ref bool showPrompt, ref bool readFromConsole)
{
if (readFromConsole || (!driver.Eof && success))
{
return(0);
}
if (nonDebugNonGuiExitOnError && !success)
{
return(-1);
}
if (scriptFilename.Count != 0)
{
TextReader newReader;
try
{
newReader = new StreamReader((String)scriptFilename[0]);
}
catch (Exception e)
{
Console.WriteLine("Unable to read file \"" + scriptFilename[0] + "\": " + e.Message);
return(-1);
}
scriptFilename.RemoveAt(0);
shell.ReInit(newReader);
driver.Eof = false;
reader.Close();
reader = newReader;
}
else
{
shell.ReInit(WorkaroundManager.Workaround.In);
driver.tokenSources.Pop();
driver.tokenSources.Push(shell.token_source);
showPrompt = true;
readFromConsole = true;
driver.Eof = false;
reader.Close();
}
return(0);
}
static int Main(string[] args)
{
String command = null;
List <String> scriptFilename = new List <String>();
bool showUsage = false;
bool nonDebugNonGuiExitOnError = false;
bool showIncludes = false;
int errorCode = 0; // 0==success, the return value
PrintVersion();
ParseArguments(args,
out command, out scriptFilename, out showUsage,
out nonDebugNonGuiExitOnError, out showIncludes, out errorCode);
if (showUsage)
{
PrintUsage();
return(errorCode);
}
TextReader reader;
bool showPrompt;
bool readFromConsole;
errorCode = DetermineAndOpenInputSource(command, scriptFilename,
out reader, out showPrompt, out readFromConsole);
if (errorCode != 0)
{
return(errorCode);
}
GrShell shell = new GrShell(reader);
GrShellImpl shellImpl = new GrShellImpl();
IGrShellImplForDriver impl = shellImpl;
GrShellDriver driver = new GrShellDriver(shell, impl);
shell.SetImpl(shellImpl);
shell.SetDriver(driver);
driver.tokenSources.Push(shell.token_source);
driver.showIncludes = showIncludes;
impl.nonDebugNonGuiExitOnError = nonDebugNonGuiExitOnError;
try
{
driver.conditionalEvaluationResults.Push(true);
while (!driver.Quitting && !driver.Eof)
{
driver.ShowPromptAsNeeded(showPrompt);
bool success = shell.ParseShellCommand();
errorCode = HandleEofOrErrorIfNonConsoleShell(scriptFilename, success, nonDebugNonGuiExitOnError,
shell, driver,
ref reader, ref showPrompt, ref readFromConsole);
if (errorCode != 0)
{
return(errorCode);
}
}
driver.conditionalEvaluationResults.Pop();
}
catch (Exception e)
{
Console.WriteLine("exit due to " + e.Message);
errorCode = -2;
}
finally
{
impl.Cleanup();
}
return(errorCode);
}