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Improve CLI Argument Parsing to Handle Space Separated Values #581

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Improve CLI Argument Parsing to Handle Space Separated Values #581

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51 changes: 45 additions & 6 deletions DepotDownloader/Program.cs
100644 → 100755
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Original file line number Diff line number Diff line change
Expand Up @@ -367,21 +367,60 @@ static List<T> GetParameterList<T>(string[] args, string param)
var list = new List<T>();
var index = IndexOfParam(args, param);

if (index == -1 || index == (args.Length - 1))
// Ensure the parameter was found and there is at least one value after it
if (index == -1 || index >= args.Length - 1)
return list;

index++;

var converter = TypeDescriptor.GetConverter(typeof(T));
if (converter == null)
{
Console.WriteLine($"Warning: No type converter available for type {typeof(T)}");
return list;
}

var strParam = args[index];

// Handle the scenario where we have a single space-separated string of values
if (strParam.Contains(" ") && !strParam.StartsWith("-"))

@xPaw xPaw Dec 29, 2024

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If args is already split by space, how would this ever hit?

@Alstruit Alstruit Jan 9, 2025

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This is for in case if the arg is enclosed with quotes. Especially if -dir contains spaces.

{
// Directly split and convert all elements into a list of T
try
{
list = strParam.Split(' ', StringSplitOptions.RemoveEmptyEntries)
.Select(val => (T)converter.ConvertFromString(val))
.Where(convertedVal => convertedVal != null)
.ToList();
}
catch (Exception ex)
{
Console.WriteLine($"Warning: Unable to convert values from '{strParam}' to type {typeof(T)}. Exception: {ex.Message}");
}

return list;
}

// Handle each value provided as an individual argument
while (index < args.Length)
{
var strParam = args[index];
strParam = args[index];

if (strParam[0] == '-') break;
// Stop parsing if a new parameter starts
if (strParam.StartsWith("-"))
break;

var converter = TypeDescriptor.GetConverter(typeof(T));
if (converter != null)
try
{
var convertedValue = converter.ConvertFromString(strParam);
if (convertedValue != null)
{
list.Add((T)convertedValue);
}
}
catch (Exception ex)
{
list.Add((T)converter.ConvertFromString(strParam));
Console.WriteLine($"Warning: Unable to convert value '{strParam}' to type {typeof(T)}. Exception: {ex.Message}");
}

index++;
Expand Down