/// <summary>
/// Visit a parse tree produced by <see cref="ShellParser.program_shorthand"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitProgram_shorthand([NotNull] ShellParser.Program_shorthandContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// program_shorthand : SYM_DOLLAR ~EOL* ;
/// </summary>
override public Shell.Types.IShellReturnable VisitProgram_shorthand(ShellParser.Program_shorthandContext context)
{
string execString = tokenSource.GetText(
new Antlr4.Runtime.Misc.Interval(
context.Start.StartIndex, context.Stop.StopIndex
)
)
.Substring(1);
List <string> argsList = execString.Split(' ').ToList();
if (argsList.First().Length == 0)
{
argsList.RemoveAt(0);
}
List <string> nargs = new List <string>();
// Join any arguments if they are valid substitutions
for (int i = 0; i < argsList.Count; i++)
{
bool added = false;
var arg = argsList[i];
for (int j = i + 1; j < argsList.Count; j++)
{
if (arg.StartsWith("\"") && argsList[j].EndsWith("\""))
{
nargs.Add(String.Join(" ", argsList.GetRange(i, j)));
i = j + 1;
added = true;
break;
}
else if (arg.StartsWith('`') && argsList[j].EndsWith('`'))
{
nargs.Add(String.Join(" ", argsList.GetRange(i, j)));
i = j + 1;
added = true;
break;
}
}
if (!added)
{
nargs.Add(arg);
}
}
argsList = nargs;
Process process = new Process();
process.StartInfo.FileName = argsList.First();
argsList = argsList.Skip(1).Select(
str => {
// perform any substitutions
if (str.StartsWith("\"") && str.EndsWith("\""))
{
return(Utility.GetString(str, this).ToString());
}
else if (str.StartsWith('`') && str.EndsWith('`'))
{
return(str[1..^ 1]);
}