/// <see cref="IIntegerFileCreator.CreateIntegerTextFile(IEnumerable{int}, string)"/>
public void CreateIntegerTextFile(IEnumerable <int> integers, string filePath)
{
//Create the directory the file will be living in, if it does not already exist
fileIO.CreateDirectory(fileIO.GetDirectoryFromFilePath(filePath));
//Create the file
using (Stream fileStream = fileIO.CreateFile(filePath))
{
//Create a stream writer from the file stream
using (StreamWriter fileStreamWriter = new StreamWriter(fileStream))
{
//Iterate over each integer and write it to the file
foreach (int integer in integers)
{
fileIO.WriteIntegerToStream(fileStreamWriter, integer);
}
//Flush the stream writer
fileStreamWriter.Flush();
}
}
}
/// <summary>
/// Merges an input file group into a single output file
/// </summary>
/// <param name="fileGroup">The names of the input files to be merged</param>
/// <param name="outputDirectory">The directory the output file is to be written in</param>
/// <param name="fileTemplate">The template for the output file</param>
/// <param name="fileGroupNumber">The file group number</param>
/// <param name="updateProgress">A method that will be called to update chunk file creation progress. The
/// number of integers that have been merged so far in the file group will be passed to this method
/// whenever an integer is merged.</param>
/// <returns>The path of the output file that was written</returns>
private string MergeInputFileGroup(List <string> fileGroup, string outputDirectory, string fileTemplate,
int fileGroupNumber, Action <int> updateProgress = null)
{
//Create the input stream readers
List <StreamReader> inputStreamReaders = fileGroup
.Select(file => fileIO.CreateFileStreamReader(file))
.ToList();
//Create the output file and output file stream writer
string outputFilePath = Path.Combine(outputDirectory, string.Format(fileTemplate, fileGroupNumber));
using (Stream outputFileStream = fileIO.CreateFile(outputFilePath))
using (StreamWriter outputStreamWriter = new StreamWriter(outputFileStream))
{
//Merge the input streams into the output stream
integerStreamMerger.MergeIntegerStreams(inputStreamReaders, outputStreamWriter, updateProgress);
}
//Close the input stream readers
inputStreamReaders.ForEach(inputStreamReader => inputStreamReader.Close());
return(outputFilePath);
}
