private static int?GetDesiredLogoScale(IList <string> paths, FindLogoScaleStrategy findLogoScaleStrategy, string token, int desiredScaleValue)
{
var scales = new List <int>();
foreach (var path in paths)
{
int pos = path.ToLower().IndexOf(token) + token.Length;
string sizeText = path.Substring(pos);
int size;
if (int.TryParse(sizeText, out size))
{
scales.Add(size);
}
}
if (scales.Count > 0)
{
int closestScale = desiredScaleValue;
if (findLogoScaleStrategy == FindLogoScaleStrategy.Highest)
{
closestScale = scales.Max();
}
else if (findLogoScaleStrategy == FindLogoScaleStrategy.NeareastToCustomScale)
{
closestScale =
scales.Aggregate((x, y) => Math.Abs(x - desiredScaleValue) < Math.Abs(y - desiredScaleValue) ? x : y);
}
return(closestScale);
}
return(null);
}
public static string FindLogoImagePath(string path, string resourceName, FindLogoScaleStrategy findLogoScaleStrategy, int scaleValue = 100)
{
var isValidFindStrategy = Enum.IsDefined(typeof(FindLogoScaleStrategy), findLogoScaleStrategy);
if (!isValidFindStrategy)
{
throw new ArgumentException("Invalid find logo strategy." + findLogoScaleStrategy);
}
if (string.IsNullOrWhiteSpace(resourceName))
{
return(null);
}
const string fileNameScaleToken = ".scale-";
string fileNameWithoutExtension = Path.GetFileNameWithoutExtension(resourceName);
string fileExtension = Path.GetExtension(resourceName);
var folderPath = Path.Combine(path, Path.GetDirectoryName(resourceName));
if (!Directory.Exists(folderPath))
{
return(null);
}
// Try to find logos by file names in folder first
var files = Directory.EnumerateFiles(Path.Combine(path, folderPath), fileNameWithoutExtension + fileNameScaleToken + "*" + fileExtension).ToList();
files = files.Select(Path.GetFileNameWithoutExtension).ToList();
if (files.Any())
{
var foundFilesScale = GetDesiredLogoScale(files, findLogoScaleStrategy, fileNameScaleToken, scaleValue);
var sizedFilePath = Path.Combine(path, Path.GetDirectoryName(resourceName), fileNameWithoutExtension + fileNameScaleToken + foundFilesScale + fileExtension);
if (File.Exists(sizedFilePath))
{
return(sizedFilePath);
}
}
// If no files found try to mach again sub folder names
const string folderNameScaleToken = "scale-";
var folders = Directory.EnumerateDirectories(folderPath).Where(p => p.Contains("scale-")).ToList();
if (folders.Any())
{
var foundScale = GetDesiredLogoScale(folders, findLogoScaleStrategy, folderNameScaleToken, scaleValue);
if (foundScale != null)
{
var sizedFolderPath = Path.Combine(
folderPath,
folderNameScaleToken + foundScale,
fileNameWithoutExtension + fileExtension);
if (File.Exists(sizedFolderPath))
{
return(sizedFolderPath);
}
}
}
// Finally just do an exact match with no
// scale specifier
var finalPath = Path.Combine(path, resourceName);
if (File.Exists(finalPath))
{
return(finalPath);
}
return(null);
}
