Ejemplo n.º 1
0
        public Category(string path)
        {
            this.Path = path;

            // GetFileName returns just the name from a path, even for directories
            this.Name = System.IO.Path.GetFileName(path);
            string[] splitName = StringFuncs.SplitName(Name);
            ProductCode = splitName[0];
            Metadata    = splitName.ElementAtOrDefault(1); // sets to null if there is no other metadata
            if (Metadata is null)
            {
                MetaList = new string[] { "" }; // set to empty string to do intersection count
            }
            else
            {
                MetaList = StringFuncs.SplitMetadata(Metadata);
            }
        }
Ejemplo n.º 2
0
        // Return the best category for a given image
        public static Category FindCategory(string imageName, Dictionary <string, List <Category> > categories)
        {
            var comparer = StringComparer.OrdinalIgnoreCase; // used to ignore case in comparisons

            string[] splitName   = StringFuncs.SplitName(imageName);
            string   productName = splitName[0];
            string   metadata    = splitName.ElementAtOrDefault(1); // returns null if there is no metadata

            // Return null if there is no matching category
            if (!categories.ContainsKey(productName))
            {
                Console.WriteLine("No category for {0}", imageName);
                return(null);
            }

            // Narrow down the categories to just ones with a matching product name
            var matchingCategories = categories[productName];

            // If the image only has a name, return category with no other metadata
            if (metadata is null)
            {
                Category baseCategory = matchingCategories.First(cat => cat.Metadata is null);
                return(baseCategory);
            }

            List <string> metaList = StringFuncs.SplitMetadata(metadata).ToList();

            // Sort by number of matching metadata items between categories and images.
            // This is done through ordering the count of the intersection between the two.
            // Doing it this way handles arbitrary ordering and number of metadata tags.
            IEnumerable <Category> match = matchingCategories
                                           .OrderByDescending(cat => metaList.Intersect(cat.MetaList, comparer).Count());

            // Remove all cases where the category has more metadata than the image.
            // Keep categories without metadata (metaList[0] = "").
            match = match.Where(cat => cat.MetaList[0] == "" || !cat.MetaList.Except(metaList, comparer).Any());

            // Return the best match
            return(match.Any() ? match.First() : null);
        }