public static void ReplaceOccurances(string path, string extension,
string s, string r, ParallelLog log = null, int maxDegreeOfParallelism = 2)
{
List <string> fileNames = GetListOfFiles(path, extension);
ParallelOptions options = new ParallelOptions();
if (maxDegreeOfParallelism < 1)
{
throw new ArgumentException("Number of threads can't be " + maxDegreeOfParallelism);
}
Console.WriteLine("Invoking parallel");
try
{
options.MaxDegreeOfParallelism = maxDegreeOfParallelism;
Parallel.ForEach(fileNames, options, name => Replace(name, s, r, log));
Console.WriteLine("Replaced");
}
catch (AggregateException exceptions)
{
Console.WriteLine(exceptions.Message);
foreach (var exception in exceptions.Flatten().InnerExceptions)
{
Console.WriteLine("\t{0}", exception.Message);
}
}
}
public static void Replace(string fileName, string s, string r,
ParallelLog log = null)
{
if ((fileName == null) || (fileName == ""))
{
throw new ArgumentException("Empty filename is not allowed");
}
FileInfo fileInfo = new FileInfo(fileName);
if (!fileInfo.Exists)
{
throw new ArgumentException("File doesn't exist");
}
string tempFileName = "./" + fileInfo.Name + ".tmp";
using (var input = File.OpenText(fileName))
{
using (var output = new StreamWriter(tempFileName))
{
string line;
int strNum = 0;
while (null != (line = input.ReadLine()))
{
string newLine = line.Replace(s, r);
if ((log != null) && (line != newLine))
{
log.Log(fileName, strNum, line, newLine);
}
output.WriteLine(newLine);
strNum++;
}
}
}
File.Delete(fileInfo.FullName);
File.Move(tempFileName, fileName);
}