/// <summary>
/// "Splits" file array to slices by calculating each
/// slice start and end index.
/// </summary>
/// <param name="arrLen">file array length</param>
/// <param name="sliceCount">how many slices</param>
/// <returns>Array of slice start and end indexes</returns>
private ArraySlice[] GetSliceIndexes(int arrLen, int sliceCount)
{
var chunks = new ArraySlice[sliceCount];
int chunkSize = (int)Math.Ceiling((double)arrLen / sliceCount);
int chunkIndex = 0; // chunk array (result array) index
int arrIndex = 0;
while (arrIndex < arrLen)
{
chunks[chunkIndex] = new ArraySlice(arrIndex, arrIndex += chunkSize);
arrIndex++; // bump index for next loop iteration
chunkIndex++;
}
//last index most likely is out of range, lets fix that
chunks[sliceCount - 1].End = arrLen - 1;
return(chunks);
}
/// <summary>
/// Instantiates Arguments object
/// </summary>
/// <param name="cmdArgs">commandline arguments</param>
public Arguments(string[] cmdArgs)
{
if (cmdArgs.Contains("-help"))
{
HelpRequested = true;
return;
}
else if (cmdArgs.Length < 3)
{
throw new InsufficienArgumentsException();
}
else
{
FileLocation = cmdArgs[0];
StartFormat = cmdArgs[1];
TargetFormat = cmdArgs[2];
if (cmdArgs.Length > 3)
{
var extraParams = new ArraySlice(3, cmdArgs.Length - 1);
ParseSettingsArgs(extraParams, cmdArgs);
}
}
}
/// <summary>
/// Parses setting arguments
/// </summary>
/// <param name="settingSlice">slice containing setting arguments</param>
/// <param name="args">commandline args</param>
/// <exception cref="MultipleArgumentException"></exception>
/// <exception cref="UnknownArgumentException"></exception>
private void ParseSettingsArgs(ArraySlice settingSlice, string[] args)
{
for (int i = settingSlice.Start; i <= settingSlice.End; i++)
{
switch (args[i])
{
case "-help":
if (HelpRequested)
{
throw new MultipleArgumentException()
{
Argument = args[i]
}
}
;
HelpRequested = true;
break;
case "-R": goto case "-r";
case "-r":
if (RecursiveFileSearch)
{
throw new MultipleArgumentException()
{
Argument = args[i]
}
}
;
else
{
RecursiveFileSearch = true;
}
break;
case "-T": goto case "-t";
case "-t":
if (MultiThreadRequested)
{
throw new MultipleArgumentException()
{
Argument = args[i]
}
}
;
else
{
MultiThreadRequested = true;
}
break;
case "-l": goto case "-log";
case "-log":
if (LogEachFile)
{
throw new MultipleArgumentException()
{
Argument = args[i]
}
}
;
else
{
LogEachFile = true;
}
break;
default: throw new UnknownArgumentException()
{
Argument = args[i]
};
}
}
}
