/// <summary>
/// Parses the given file.
/// </summary>
/// <param name="pathToFile">The path of the file to parse.</param>
/// <returns></returns>
public static BigramMap ParseFile(string pathToFile)
{
BigramMap map = new BigramMap();
string jsonString = "";
using (FileStream reader = File.OpenRead(pathToFile))
using (var zip = new GZipStream(reader, CompressionMode.Decompress, true))
using (var unzip = new StreamReader(zip))
while (!unzip.EndOfStream)
{
jsonString += unzip.ReadLine();
}
var json = JObject.Parse(jsonString);
foreach (KeyValuePair <string, JToken> app in json)
{
// ignore cardIds, only parse data of bigramMap
if (app.Key.Equals("bigramMap"))
{
var bigramArray = JArray.Parse(app.Value.ToString());
foreach (JObject bigramArrayEntry in bigramArray)
{
AddObjectToBigramMap(map, bigramArrayEntry);
}
}
}
map.Sort();
return(map);
}
/// <summary>
/// Adds the given JSON array object to the bigram map.
/// </summary>
/// <param name="map">The bigram map.</param>
/// <param name="bigramArrayEntry">The new bigram array entry.</param>
private static void AddObjectToBigramMap(BigramMap map, JObject bigramArrayEntry)
{
foreach (KeyValuePair <string, JToken> entry in bigramArrayEntry)
{
string keyCard = entry.Key;
var occurrencesArray = JArray.Parse(entry.Value.ToString());
AddOccurrencesOfKeyCardToMap(map, keyCard, occurrencesArray);
}
}
/// <summary>
/// Add a occurances array of entries of a card to the bigram map.
/// </summary>
/// <param name="map">The bigram map.</param>
/// <param name="keyCard">The key card.</param>
/// <param name="occurrencesArray">The list of entris with the occurrences.</param>
private static void AddOccurrencesOfKeyCardToMap(BigramMap map, string keyCard, JArray occurrencesArray)
{
string valCard = "";
int numOcc = 0;
foreach (JObject occObject in occurrencesArray)
{
foreach (KeyValuePair <string, JToken> occEntry in occObject)
{
if (occEntry.Key.Equals("numOcc"))
{
numOcc = (int)occEntry.Value;
}
else if (occEntry.Key.Equals("cardId"))
{
valCard = (string)occEntry.Value;
}
}
map.Add(keyCard, valCard, numOcc);
}
}
