/toolkit/PhoneToolkitSample/Data/LoremIpsum.cs

// (c) Copyright Microsoft Corporation.

// This source is subject to the Microsoft Public License (Ms-PL).

// Please see http://go.microsoft.com/fwlink/?LinkID=131993 for details.

// All other rights reserved.



using System;

using System.Collections;

using System.Collections.Generic;

using System.IO;

using System.Text;

using System.Windows;

using System.Windows.Resources;



namespace PhoneToolkitSample.Data

{

    /// <summary>

    /// A class to return paragraphs of random sentences or a word list from lorem ipsum data.

    /// </summary>

    public class LoremIpsum : IEnumerable<string>

    {

        public enum Capitalization

        {

            None,

            FirstWord,

            AllWords

        }



        private static Random _rnd = new Random(42);



        private static StringBuilder _builder = new StringBuilder();

        private static List<string> _sentences;

        private static List<string> _words;



        /// <summary>

        /// Returns random lorem ipsum sentences combined into a single string.

        /// </summary>

        /// <param name="sentenceCount">The nunmber of sentences.</param>

        /// <returns>The paragraph, composed of random sentences.</returns>

        public static string GetParagraph(int sentenceCount)

        {

            EnsureSentences();



            _builder.Length = 0;



            while (sentenceCount-- > 0)

            {

                _builder.Append(_rnd.Next(_sentences));

                if (sentenceCount > 0)

                {

                    _builder.Append(' ');

                }

            }



            return _builder.ToString();

        }



        /// <summary>

        /// Return an alphabetized, lower-case list of lorem ipsum words.

        /// </summary>

        public static ICollection<string> Words

        {

            get

            {

                EnsureWords();

                return (ICollection<string>)_words;

            }

        }



        /// <summary>

        /// Get a string composed of random lorem ipsum words. Will not end with punctuation.

        /// </summary>

        /// <param name="wordCount">Number of words.</param>

        /// <param name="capitalize">How to capitalize the words.</param>

        /// <returns></returns>

        public static string GetWords(int wordCount, Capitalization capitalization)

        {

            EnsureWords();



            _builder.Length = 0;



            while (wordCount-- > 0)

            {

                int position = _builder.Length;

                _builder.Append(_rnd.Next(_words));

                if (capitalization == Capitalization.AllWords || (position == 0 && capitalization == Capitalization.FirstWord))

                {

                    _builder[position] = char.ToUpper(_builder[position]);

                }



                if (wordCount > 0)

                {

                    _builder.Append(' ');

                }

            }



            return _builder.ToString();

        }



        /// <summary>

        /// Enumerates the Words property.

        /// </summary>

        /// <returns>The enumerator.</returns>

        public IEnumerator<string> GetEnumerator()

        {

            return LoremIpsum.Words.GetEnumerator();

        }



        /// <summary>

        /// Enumerates the Words property.

        /// </summary>

        /// <returns>The enumerator.</returns>

        IEnumerator IEnumerable.GetEnumerator()

        {

            return LoremIpsum.Words.GetEnumerator();

        }



        /// <summary>

        /// Reads the lorem ipsum sentences. Supplies some data in case reading fails, which

        /// it will do at design time.

        /// </summary>

        private static void EnsureSentences()

        {

            if (_sentences == null)

            {

                _sentences = new List<string>();



                StreamResourceInfo info = Application.GetResourceStream(new Uri("Data/LoremIpsum.txt", UriKind.Relative));

                if (info != null)

                {

                    Stream stream = info.Stream;

                    if (stream != null)

                    {

                        using (StreamReader reader = new StreamReader(stream))

                        {

                            while (!reader.EndOfStream)

                            {

                                _sentences.Add(reader.ReadLine());

                            }

                        };

                    }

                }



                if (_sentences.Count == 0)

                {

                    _sentences.Add("Lorem ipsum dolor sit amet, consectetuer adipiscing elit.");

                    _sentences.Add("Maecenas porttitor congue massa.");

                    _sentences.Add("Fusce posuere, magna sed pulvinar ultricies, purus lectus malesuada libero, sit amet commodo magna eros quis urna.");

                    _sentences.Add("Nunc viverra imperdiet enim.");

                    _sentences.Add("Fusce est.");

                }

            }

        }



        /// <summary>

        /// Creates an alphabetized list of the words from the lorem ipsum text.

        /// </summary>

        private static void EnsureWords()

        {

            char[] separators = { ' ', ',', '.' };

            

            EnsureSentences();



            if (_words == null)

            {

                Dictionary<string, object> temp = new Dictionary<string, object>();



                foreach (string sentence in _sentences)

                {

                    string[] words = sentence.Split(separators, StringSplitOptions.RemoveEmptyEntries);

                    foreach (string word in words)

                    {

                        temp[word.ToLower()] = null;

                    }

                }



                _words = new List<string>(temp.Keys);

                _words.Sort();

            }

        }

    }

}