public IncludeFile GetIncludeFile(ProbeAppSettings appSettings, string sourceFileName, string fileName, bool searchSameDir, IEnumerable <string> parentFiles)
{
#if DEBUG
if (parentFiles == null)
{
throw new ArgumentNullException("parentFiles");
}
#endif
if (string.IsNullOrEmpty(fileName))
{
return(null);
}
// Check if the include file is cached.
IncludeFile file = null;
var fileNameLower = fileName.ToLower();
if (searchSameDir && !string.IsNullOrEmpty(sourceFileName))
{
if (_sameDirIncludeFiles.TryGetValue(fileNameLower, out file))
{
file.CheckForRefreshRequired();
return(file);
}
}
if (_globalIncludeFiles.TryGetValue(fileNameLower, out file))
{
file.CheckForRefreshRequired();
return(file);
}
// Search the disk in same directory.
if (searchSameDir && !string.IsNullOrEmpty(sourceFileName))
{
var pathName = Path.Combine(Path.GetDirectoryName(sourceFileName), fileName);
if (File.Exists(pathName))
{
if (CheckForCyclicalInclude(pathName, parentFiles))
{
return(null);
}
file = new IncludeFile(this, pathName);
_sameDirIncludeFiles[fileNameLower] = file;
return(file);
}
}
// Search the disk in global include directories.
if (appSettings.Initialized)
{
foreach (var includeDir in appSettings.IncludeDirs)
{
var pathName = Path.Combine(includeDir, fileName);
if (File.Exists(pathName))
{
if (CheckForCyclicalInclude(pathName, parentFiles))
{
return(null);
}
file = new IncludeFile(this, pathName);
_globalIncludeFiles[fileNameLower] = file;
return(file);
}
}
}
return(null);
}