public static IDictionary <string, int> TopNWords(string document, int n, HashSet <string> stopwords, CultureInfo culture = null)
{
if (document == null)
{
throw new ArgumentNullException("document");
}
culture = CultureUtils.GetCurrentCultureIfNull(culture);
bool dontUseStopwords = stopwords == null;
IDictionary <string, int> result = new Dictionary <string, int>(dontUseStopwords ? StringComparer.Create(culture, true) : stopwords.Comparer);
string[] words = document.Split(s_WordSeparators, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < words.Length; i++)
{
string word = words[i];
if (dontUseStopwords || !stopwords.Contains(word))
{
int count;
if (result.TryGetValue(word, out count))
{
result[word] = count + 1;
}
else
{
result[word] = 1;
}
}
}
return(result.OrderBy(x => x.Value).Take(n).ToDictionary(x => x.Key, x => x.Value));
}
/// <summary>
/// Converts the first character of each word to Uppercase. Example: "the lazy dog" returns "The Lazy Dog"ç
/// </summary>
/// <param name="words">The words.</param>
/// <param name="culture">The culture.</param>
/// <returns>title cased string.</returns>
/// <exception cref="System.ArgumentNullException">words</exception>
public static string ToTitleCase(string[] words, CultureInfo culture = null)
{
if (words == null)
{
throw new ArgumentNullException("words");
}
culture = CultureUtils.GetCurrentCultureIfNull(culture);
string[] titleCasedWords = new string[words.Length];
for (int i = 0; i < words.Length; i++)
{
string word = words[i];
if (string.IsNullOrEmpty(word))
{
titleCasedWords[i] = word;
}
else
{
titleCasedWords[i] = char.ToUpper(word[0], culture) + word.Substring(1);
}
}
return(string.Join(SPACE_STRING, titleCasedWords));
}
public static DataTable ToDataTable <TItem>(IList <TItem> list, CultureInfo culture = null)
where TItem : IDictionary
{
if (list == null)
{
throw new ArgumentNullException("list");
}
culture = CultureUtils.GetCurrentCultureIfNull(culture);
DataTable result = null;
bool succeded = false;
try
{
result = new DataTable
{
Locale = culture
};
if (list.Count == 0)
{
succeded = true;
return(result);
}
// Select column names
HashSet <string> columns = new HashSet <string>();
for (int i = 0; i < list.Count; i++)
{
TItem item = list[i];
foreach (DictionaryEntry dictionaryEntry in item)
{
columns.Add(ConvertUtils.ChangeType <string>(dictionaryEntry.Key, culture));
}
}
result.Columns.AddRange(columns.Select(c => new DataColumn(c, typeof(object))).ToArray());
for (int i = 0; i < list.Count; i++)
{
TItem item = list[i];
AddRow(result, item, culture);
}
succeded = true;
}
finally
{
if (!succeded && result != null)
{
result.Dispose();
result = null;
}
}
return(result);
}
/// <summary>
/// Gets the node attribute value.
/// </summary>
/// <typeparam name="TValue">The type of the value.</typeparam>
/// <param name="node">The node.</param>
/// <param name="propertyName">Name of the property.</param>
/// <param name="culture">The culture.</param>
/// <returns>The node attribute value.</returns>
public static TValue GetNodeAttributeValue <TValue>(XmlNode node, string propertyName, CultureInfo culture = null)
{
if (node == null)
{
throw new XmlUtilsException(Strings.XmlUtils_GetNodeProperty_Error);
}
culture = CultureUtils.GetCurrentCultureIfNull(culture);
return(ConvertUtils.ChangeType <TValue>(GetNodeAttributeValue(node, propertyName, null), culture));
}
/// <summary>
/// Adds the row.
/// </summary>
/// <param name="table">The table.</param>
/// <param name="item">The item.</param>
/// <param name="culture">The culture.</param>
private static void AddRow(DataTable table, IDictionary item, CultureInfo culture = null)
{
DataRow row = table.NewRow();
foreach (var key in item.Keys)
{
string columnName = ConvertUtils.ChangeType <string>(key, CultureUtils.GetCurrentCultureIfNull(culture));
row[columnName] = item[key];
}
table.Rows.Add(row);
}
/// <summary>
/// Gets the month names of the specified culture.
/// </summary>
/// <param name="culture">The culture.</param>
/// <returns>Month names list.</returns>
public static IList <MonthName> GetMonthNames(CultureInfo culture = null)
{
culture = CultureUtils.GetCurrentCultureIfNull(culture);
return(culture.DateTimeFormat.MonthNames
.TakeWhile(m => !m.IsNullOrEmpty())
.Select((m, i) => new MonthName
{
Number = i + 1,
Name = m
}).ToList());
}
/// <summary>
/// Gets the day names.
/// </summary>
/// <param name="culture">The culture.</param>
/// <returns>Day names list.</returns>
public static IList <DayName> GetDayNames(CultureInfo culture = null)
{
culture = CultureUtils.GetCurrentCultureIfNull(culture);
return(culture.DateTimeFormat.DayNames
.TakeWhile(m => !m.IsNullOrEmpty())
.Select((m, i) => new DayName
{
Number = ((i + (7 - (int)culture.DateTimeFormat.FirstDayOfWeek)) % 7) + 1,
Name = m
}).ToList());
}
/// <summary>
/// Gets the node attribute value.
/// </summary>
/// <typeparam name="TValue">The type of the value.</typeparam>
/// <param name="node">The node.</param>
/// <param name="propertyName">Name of the property.</param>
/// <param name="defaultValue">The default value.</param>
/// <param name="culture">The culture.</param>
/// <returns>The node attribute value.</returns>
public static TValue GetNodeAttributeValue <TValue>(XmlNode node, string propertyName, TValue defaultValue, CultureInfo culture = null)
{
culture = CultureUtils.GetCurrentCultureIfNull(culture);
string value;
if (TryGetNodeAttributeValue(node, propertyName, out value))
{
return(ConvertUtils.ChangeType <TValue>(value, culture));
}
return(defaultValue);
}
/// <summary>
/// Capitalizes the specified string.
/// </summary>
/// <param name="string">The string.</param>
/// <param name="culture">The culture.</param>
/// <returns>capitalized string.</returns>
public static string Capitalize(string @string, CultureInfo culture = null)
{
if (string.IsNullOrEmpty(@string))
{
return(string.Empty);
}
culture = CultureUtils.GetCurrentCultureIfNull(culture);
if (@string.Length == 1)
{
return(@string.ToUpper(culture));
}
return(@string.Substring(0, 1).ToUpper(culture) + @string.Substring(1));
}
public static DataTable ToDataTable(ICollection <DynamicDictionary> list, CultureInfo culture = null)
{
if (list == null)
{
throw new ArgumentNullException("list");
}
culture = CultureUtils.GetCurrentCultureIfNull(culture);
DataTable result = null;
bool succeded = false;
try
{
result = new DataTable {
Locale = culture
};
if (list.Count == 0)
{
succeded = true;
return(result);
}
IEnumerable <string> columnNames = list.SelectMany(dict => dict.Keys).Distinct();
result.Columns.AddRange(columnNames.Select(c => new DataColumn(c, typeof(object))).ToArray());
foreach (DynamicDictionary item in list)
{
AddRow(result, item, culture);
}
succeded = true;
}
finally
{
if (!succeded && result != null)
{
result.Dispose();
result = null;
}
}
return(result);
}
/// <summary>
/// To the name value collection.
/// </summary>
/// <param name="dictionary">The dictionary.</param>
/// <param name="culture">The culture for string conversion.</param>
/// <returns>NameValueCollection.</returns>
/// <exception cref="System.ArgumentNullException">dictionary</exception>
public static NameValueCollection ToNameValueCollection(IDictionary dictionary, CultureInfo culture = null)
{
if (dictionary == null)
{
throw new ArgumentNullException("dictionary");
}
culture = CultureUtils.GetCurrentCultureIfNull(culture);
NameValueCollection result = new NameValueCollection(dictionary.Count);
foreach (DictionaryEntry dictionaryEntry in dictionary)
{
result.Add(ConvertUtils.ChangeType <string>(dictionaryEntry.Key, culture), ConvertUtils.ChangeType <string>(dictionaryEntry.Value, culture));
}
return(result);
}
public static IDictionary <string, int> TopNWords(string document, int n, bool stopwordEnabled = false, CultureInfo culture = null)
{
if (document == null)
{
throw new ArgumentNullException("document");
}
culture = CultureUtils.GetCurrentCultureIfNull(culture);
HashSet <string> stopwords = null;
if (stopwordEnabled)
{
s_StopWords.TryGetValue(culture, out stopwords);
}
return(TopNWords(document, n, stopwords, culture));
}
/// <summary>
/// Method to convert a custom Object to XML string
/// </summary>
/// <param name="value">Object that is to be serialized to XML</param>
/// <param name="culture">Culture.</param>
/// <exception cref="ArgumentNullException">value</exception>
/// <returns>XML string</returns>
public static string XmlSerializeObject(object value, CultureInfo culture = null)
{
if (value == null)
{
throw new ArgumentNullException("value");
}
culture = CultureUtils.GetCurrentCultureIfNull(culture);
Type objectType = value.GetType();
XmlSerializer xmlSerializer = new XmlSerializer(objectType);
using (StringWriter stringWriter = new StringWriter(culture))
{
XmlWriter xmlWriter = new XmlTextWriter(stringWriter);
xmlSerializer.Serialize(xmlWriter, value);
return(stringWriter.ToString());
}
}
/// <summary>
/// Determines whether [contains] [the specified target].
/// </summary>
/// <param name="target">The target.</param>
/// <param name="value">The value.</param>
/// <param name="startIndex">The start index.</param>
/// <param name="culture">The culture.</param>
/// <returns>
/// <c>true</c> if [contains] [the specified target]; otherwise, <c>false</c>.
/// </returns>
public static bool Contains(string target, string value, int startIndex, CultureInfo culture = null)
{
culture = CultureUtils.GetCurrentCultureIfNull(culture);
return(target != null && value != null && culture.CompareInfo.IndexOf(target, value, startIndex) >= 0);
}
