static void ReplaceLineOrValue(FileInfo fileToRead, ReplaceType type, Replacement[] replacements, string oldValue = null)
{
var fileName = fileToRead.FullName;
Trace.TraceInformation("Reading config file '{0}'.", fileName);
if (!File.Exists(fileName))
{
Trace.TraceError("The file to modify does not exis '{0}'.", fileName);
return;
}
var lines = new List<string>();
using (var file = new StreamReader(fileName))
{
while (!file.EndOfStream)
{
var line = file.ReadLine();
if (line == null) continue;
var replacement = replacements.SingleOrDefault(rep => IsMatch(rep, line));
if (replacement != null)
{
Trace.TraceInformation(
"Found match for <{0}> on line #{1}. The line was <{2}> and was replaced with <{3}>.",
replacement.PatternToFind,
lines.Count + 1,
line,
replacement.LineToInsert);
if(type == ReplaceType.Line)
line = replacement.LineToInsert;
if(type == ReplaceType.Value && oldValue != null)
line = line.Replace(oldValue, replacement.LineToInsert);
}
lines.Add(line);
}
}
using (var file = new StreamWriter(fileName, false))
{
foreach (string line in lines)
{
file.WriteLine(line);
}
}
Trace.TraceInformation("Config file '{0}' written.", fileName);
}
private static bool IsMatch(Replacement rep, string line)
{
return rep.LineSearchOptions == LineSearchOptions.Contains
? line.Contains(rep.PatternToFind)
: line.StartsWith(rep.PatternToFind);
}