/// <summary>
/// Appends the file with lines not already contained in the file, from the specified line list
/// </summary>
/// <param name="lineList">The line list.</param>
/// <param name="altPath">The alt path -- if specified it will create new file and will return operator for it</param>
public fileTextOperater Append(IEnumerable <String> lineList, String altPath = "")
{
String tmpPath = filePath + "bck";
if (!altPath.isNullOrEmpty())
{
tmpPath = altPath;
}
FileInfo tmpFile = tmpPath.getWritableFile(getWritableFileMode.overwrite);
List <String> linesToAppend = lineList.ToList();
Int32 ln = 0;
using (var st = File.OpenText(file.FullName))
{
var ost = File.AppendText(tmpFile.FullName);
while (!st.EndOfStream)
{
String line = st.ReadLine();
if (lineList.Contains(line))
{
linesToAppend.Remove(line);
}
ost.WriteLine(line);
ln++;
}
foreach (String apln in linesToAppend)
{
ost.WriteLine(apln);
ln++;
}
ost.Close();
ost.Dispose();
st.Close();
st.Dispose();
}
if (altPath.isNullOrEmpty())
{
File.Copy(tmpFile.FullName, file.FullName, true);
File.Delete(tmpFile.FullName);
estLinesInFile = Math.Max(estLinesInFile, ln);
return(this);
}
else
{
fileTextOperater op = new fileTextOperater(tmpFile.FullName);
op.estLinesInFile = ln;
return(op);
}
}
/// <summary>
/// Removes all lines matching the lineList
/// </summary>
/// <param name="lineList">the list of lines to remove</param>
/// <param name="altPath">If specified output is written to the path, original file is not changed</param>
public fileTextOperater Remove(List <String> lineList, String altPath = "")
{
String tmpPath = filePath + "bck";
if (!altPath.isNullOrEmpty())
{
tmpPath = altPath;
}
FileInfo tmpFile = tmpPath.getWritableFile(getWritableFileMode.overwrite);
Int32 ln = 0;
Int32 rm = 0;
using (var st = File.OpenText(file.FullName))
{
var ost = File.AppendText(tmpFile.FullName);
while (!st.EndOfStream)
{
String line = st.ReadLine();
if (!lineList.Contains(line))
{
ost.WriteLine(line);
}
else
{
rm++;
}
ln++;
}
ost.Close();
ost.Dispose();
st.Close();
st.Dispose();
}
memMap = null;
if (altPath.isNullOrEmpty())
{
File.Copy(tmpFile.FullName, file.FullName, true);
File.Delete(tmpFile.FullName);
estLinesInFile = ln - rm;
return(this);
}
else
{
fileTextOperater op = new fileTextOperater(tmpFile.FullName);
op.estLinesInFile = ln - rm;
return(op);
}
}
