/// <summary>
/// Gets dictionary of all blob identities to number of keyword hits.
/// </summary>
/// <param name="tags">Tags to look for.</param>
/// <returns>Dictionary of blob hash identities to kit count.</returns>
public static Dictionary <byte[], uint> GetKeywordDictionary(string[] tags)
{
Guard.ThrowIfEmpty(tags, nameof(tags));
var result = new Dictionary <byte[], uint>(new ByteArrayCompare());
var buffer = new byte[Hash.Length];
foreach (var tag in tags)
{
var tagHash = Hash.HashString(tag.ToUpper());
var tagPath = NitPath.GetFullTagPath(tagHash);
if (File.Exists(tagPath))
{
HashFileReader.Read(tagPath, (input) =>
{
// if not there, add it with cnt 1
if (!result.TryAdd(input, 1))
{
// it already exists, so increment
result[input]++;
}
return(true);
});
}
}
return(result);
}
/// <summary>
/// Create tags for a give hash code.
/// </summary>
/// <param name="hash">A hash to associate tags with.</param>
/// <param name="tags">The tags to associate.</param>
public static void CreateTags(Span <byte> hash, string[] tags)
{
foreach (var tag in tags)
{
var tagHash = Hash.HashString(tag.ToUpper());
var fullPath = NitPath.GetFullTagPath(tagHash);
var directoryPath = NitPath.GetTagDirectoryPath(tagHash);
if (!File.Exists(fullPath))
{
Directory.CreateDirectory(directoryPath);
using (var s = File.CreateText(fullPath))
{
var l = hash.GetHexString();
s.WriteLine(l);
}
continue;
}
// need a value type for lambda
byte[] temp = hash.ToArray();
// scan hashes in the file and stop when a match is found
HashFileReader.Read(fullPath, (input) => !((Span <byte>)temp).SequenceEqual((Span <byte>)input));
// Add the entry to the end
var line = hash.GetHexString();
File.AppendAllLines(fullPath, new List <string>()
{
line
});
}
}
