public int Execute(string argString)
{
using (MainApplicationContext.AcquireCurrentThread())
{
var envp = VirtualEnvironment.GetEnvironmentVariables();
var args = CommandLine.PreprocessSingleQuotes(argString);
int status = 1;
// The very first thing we do is handle some very special command-line
// options, since they affect how the environment is setup:
//
// --verify ; turns on memory tracing
// --verbose ; turns on logging
// --debug CATEGORY ; turns on debug logging
// --trace LEVEL ; turns on trace logging
// --memory ; turns on memory usage tracing
// --init-file ; directs ledger to use a different init file
GlobalScope.HandleDebugOptions(args);
// initialize_memory_tracing - [DM] #memory-tracing
Logger.Current.Info(() => LedgerStarting);
// ::textdomain("ledger"); - [DM] #localization
GlobalScope globalScope = null;
try
{
// Create the session object, which maintains nearly all state relating to
// this invocation of Ledger; and register all known journal parsers.
globalScope = new GlobalScope(envp);
globalScope.Session.FlushOnNextDataFile = true;
// Look for options and a command verb in the command-line arguments
BindScope boundScope = new BindScope(globalScope, globalScope.Report);
args = globalScope.ReadCommandArguments(boundScope, args);
if (globalScope.ScriptHandler.Handled)
{
// Ledger is being invoked as a script command interpreter
globalScope.Session.ReadJournalFiles();
status = 0;
using (StreamReader sr = FileSystem.GetStreamReader(globalScope.ScriptHandler.Str()))
{
while (status == 0 && !sr.EndOfStream)
{
string line = sr.ReadLine().Trim();
if (!line.StartsWith("#"))
{
status = globalScope.ExecuteCommandWrapper(StringExtensions.SplitArguments(line), true);
}
}
}
}
else if (args.Any())
{
// User has invoke a verb at the interactive command-line
status = globalScope.ExecuteCommandWrapper(args, false);
}
else
{
// Commence the REPL by displaying the current Ledger version
VirtualConsole.Output.WriteLine(globalScope.ShowVersionInfo());
globalScope.Session.ReadJournalFiles();
bool exitLoop = false;
VirtualConsole.ReadLineName = "Ledger";
string p;
while ((p = VirtualConsole.ReadLine(globalScope.PromptString())) != null)
{
string expansion = null;
int result = VirtualConsole.HistoryExpand(p.Trim(), ref expansion);
if (result < 0 || result == 2)
{
throw new LogicError(String.Format(LogicError.ErrorMessageFailedToExpandHistoryReference, p));
}
else if (expansion != null)
{
VirtualConsole.AddHistory(expansion);
}
CancellationManager.CheckForSignal();
if (!String.IsNullOrWhiteSpace(p) && p != "#")
{
if (String.Compare(p, "quit", true) == 0)
{
exitLoop = true;
}
else
{
globalScope.ExecuteCommandWrapper(StringExtensions.SplitArguments(p), true);
}
}
if (exitLoop)
{
break;
}
}
status = 0; // report success
}
}
catch (CountError errors)
{
// used for a "quick" exit, and is used only if help text (such as
// --help) was displayed
status = errors.Count;
}
catch (Exception err)
{
if (globalScope != null)
{
globalScope.ReportError(err);
}
else
{
VirtualConsole.Error.WriteLine(String.Format(ExceptionDuringInitialization, err.Message));
}
}
if (globalScope != null)
{
globalScope.QuickClose();
globalScope.Dispose(); // {DM] It is the most appropriate place to call Dispose for the global scope.
}
Logger.Current.Info(() => LedgerEnded); // let global_scope leak!
// Return the final status to the operating system, either 1 for error or 0
// for a successful completion.
return(status);
}
}