static async Task <string> CompareFiles(string ofi, string nfi, PathMatchLevel matchLevel)
{
FileComparer cmp = GetComparerForFile(ofi);
string diff = await cmp.Compare(ofi, nfi);
if (!String.IsNullOrWhiteSpace(diff) || matchLevel != PathMatchLevel.FullMatch)
{
StringBuilder output = new StringBuilder();
output.AppendLine("Diff " + ofi + " vs " + nfi + ":");
switch (matchLevel)
{
case PathMatchLevel.CaseInsensitiveMatch:
output.AppendLine("(NOTE: File paths differ in case)");
break;
case PathMatchLevel.SubstitutionMatch:
output.AppendLine("(NOTE: New file has no exact counterpart in old tree, using a substitution)");
break;
}
output.AppendLine(diff);
return(output.ToString());
}
return(String.Empty);
}
protected static FileComparer GetComparerForFile(string fi)
{
FileComparer cmp = nullComparer;
string ext = Path.GetExtension(fi);
if (comparers.ContainsKey(ext))
{
cmp = comparers[ext];
}
return(cmp);
}
static async Task <string> DumpFile(string fi)
{
FileComparer cmp = GetComparerForFile(fi);
string dump = await cmp.Dump(fi);
if (!String.IsNullOrWhiteSpace(dump))
{
StringBuilder output = new StringBuilder();
output.AppendLine("Dump of " + fi + ":");
output.AppendLine(dump);
return(output.ToString());
}
return(String.Empty);
}