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Diffstat (limited to 'docs/HtmlAgilityPack/MixedCodeDocument.cs')
| -rw-r--r-- | docs/HtmlAgilityPack/MixedCodeDocument.cs | 453 |
1 files changed, 453 insertions, 0 deletions
diff --git a/docs/HtmlAgilityPack/MixedCodeDocument.cs b/docs/HtmlAgilityPack/MixedCodeDocument.cs new file mode 100644 index 00000000000..f12ac4521bc --- /dev/null +++ b/docs/HtmlAgilityPack/MixedCodeDocument.cs @@ -0,0 +1,453 @@ +// HtmlAgilityPack V1.0 - Simon Mourier <simon underscore mourier at hotmail dot com>
+using System;
+using System.IO;
+using System.Text;
+
+namespace HtmlAgilityPack
+{
+ /// <summary>
+ /// Represents a document with mixed code and text. ASP, ASPX, JSP, are good example of such documents.
+ /// </summary>
+ public class MixedCodeDocument
+ {
+ #region Fields
+
+ private int _c;
+ internal MixedCodeDocumentFragmentList _codefragments;
+ private MixedCodeDocumentFragment _currentfragment;
+ internal MixedCodeDocumentFragmentList _fragments;
+ private int _index;
+ private int _line;
+ private int _lineposition;
+ private ParseState _state;
+ private Encoding _streamencoding;
+ internal string _text;
+ internal MixedCodeDocumentFragmentList _textfragments;
+
+ /// <summary>
+ /// Gets or sets the token representing code end.
+ /// </summary>
+ public string TokenCodeEnd = "%>";
+
+ /// <summary>
+ /// Gets or sets the token representing code start.
+ /// </summary>
+ public string TokenCodeStart = "<%";
+
+ /// <summary>
+ /// Gets or sets the token representing code directive.
+ /// </summary>
+ public string TokenDirective = "@";
+
+ /// <summary>
+ /// Gets or sets the token representing response write directive.
+ /// </summary>
+ public string TokenResponseWrite = "Response.Write ";
+
+
+ private string TokenTextBlock = "TextBlock({0})";
+
+ #endregion
+
+ #region Constructors
+
+ /// <summary>
+ /// Creates a mixed code document instance.
+ /// </summary>
+ public MixedCodeDocument()
+ {
+ _codefragments = new MixedCodeDocumentFragmentList(this);
+ _textfragments = new MixedCodeDocumentFragmentList(this);
+ _fragments = new MixedCodeDocumentFragmentList(this);
+ }
+
+ #endregion
+
+ #region Properties
+
+ /// <summary>
+ /// Gets the code represented by the mixed code document seen as a template.
+ /// </summary>
+ public string Code
+ {
+ get
+ {
+ string s = "";
+ int i = 0;
+ foreach (MixedCodeDocumentFragment frag in _fragments)
+ {
+ switch (frag._type)
+ {
+ case MixedCodeDocumentFragmentType.Text:
+ s += TokenResponseWrite + string.Format(TokenTextBlock, i) + "\n";
+ i++;
+ break;
+
+ case MixedCodeDocumentFragmentType.Code:
+ s += ((MixedCodeDocumentCodeFragment) frag).Code + "\n";
+ break;
+ }
+ }
+ return s;
+ }
+ }
+
+ /// <summary>
+ /// Gets the list of code fragments in the document.
+ /// </summary>
+ public MixedCodeDocumentFragmentList CodeFragments
+ {
+ get { return _codefragments; }
+ }
+
+ /// <summary>
+ /// Gets the list of all fragments in the document.
+ /// </summary>
+ public MixedCodeDocumentFragmentList Fragments
+ {
+ get { return _fragments; }
+ }
+
+ /// <summary>
+ /// Gets the encoding of the stream used to read the document.
+ /// </summary>
+ public Encoding StreamEncoding
+ {
+ get { return _streamencoding; }
+ }
+
+ /// <summary>
+ /// Gets the list of text fragments in the document.
+ /// </summary>
+ public MixedCodeDocumentFragmentList TextFragments
+ {
+ get { return _textfragments; }
+ }
+
+ #endregion
+
+ #region Public Methods
+
+ /// <summary>
+ /// Create a code fragment instances.
+ /// </summary>
+ /// <returns>The newly created code fragment instance.</returns>
+ public MixedCodeDocumentCodeFragment CreateCodeFragment()
+ {
+ return (MixedCodeDocumentCodeFragment) CreateFragment(MixedCodeDocumentFragmentType.Code);
+ }
+
+ /// <summary>
+ /// Create a text fragment instances.
+ /// </summary>
+ /// <returns>The newly created text fragment instance.</returns>
+ public MixedCodeDocumentTextFragment CreateTextFragment()
+ {
+ return (MixedCodeDocumentTextFragment) CreateFragment(MixedCodeDocumentFragmentType.Text);
+ }
+
+ /// <summary>
+ /// Loads a mixed code document from a stream.
+ /// </summary>
+ /// <param name="stream">The input stream.</param>
+ public void Load(Stream stream)
+ {
+ Load(new StreamReader(stream));
+ }
+
+ /// <summary>
+ /// Loads a mixed code document from a stream.
+ /// </summary>
+ /// <param name="stream">The input stream.</param>
+ /// <param name="detectEncodingFromByteOrderMarks">Indicates whether to look for byte order marks at the beginning of the file.</param>
+ public void Load(Stream stream, bool detectEncodingFromByteOrderMarks)
+ {
+ Load(new StreamReader(stream, detectEncodingFromByteOrderMarks));
+ }
+
+ /// <summary>
+ /// Loads a mixed code document from a stream.
+ /// </summary>
+ /// <param name="stream">The input stream.</param>
+ /// <param name="encoding">The character encoding to use.</param>
+ public void Load(Stream stream, Encoding encoding)
+ {
+ Load(new StreamReader(stream, encoding));
+ }
+
+ /// <summary>
+ /// Loads a mixed code document from a stream.
+ /// </summary>
+ /// <param name="stream">The input stream.</param>
+ /// <param name="encoding">The character encoding to use.</param>
+ /// <param name="detectEncodingFromByteOrderMarks">Indicates whether to look for byte order marks at the beginning of the file.</param>
+ public void Load(Stream stream, Encoding encoding, bool detectEncodingFromByteOrderMarks)
+ {
+ Load(new StreamReader(stream, encoding, detectEncodingFromByteOrderMarks));
+ }
+
+ /// <summary>
+ /// Loads a mixed code document from a stream.
+ /// </summary>
+ /// <param name="stream">The input stream.</param>
+ /// <param name="encoding">The character encoding to use.</param>
+ /// <param name="detectEncodingFromByteOrderMarks">Indicates whether to look for byte order marks at the beginning of the file.</param>
+ /// <param name="buffersize">The minimum buffer size.</param>
+ public void Load(Stream stream, Encoding encoding, bool detectEncodingFromByteOrderMarks, int buffersize)
+ {
+ Load(new StreamReader(stream, encoding, detectEncodingFromByteOrderMarks, buffersize));
+ }
+
+ /// <summary>
+ /// Loads a mixed code document from a file.
+ /// </summary>
+ /// <param name="path">The complete file path to be read.</param>
+ public void Load(string path)
+ {
+ Load(new StreamReader(path));
+ }
+
+ /// <summary>
+ /// Loads a mixed code document from a file.
+ /// </summary>
+ /// <param name="path">The complete file path to be read.</param>
+ /// <param name="detectEncodingFromByteOrderMarks">Indicates whether to look for byte order marks at the beginning of the file.</param>
+ public void Load(string path, bool detectEncodingFromByteOrderMarks)
+ {
+ Load(new StreamReader(path, detectEncodingFromByteOrderMarks));
+ }
+
+ /// <summary>
+ /// Loads a mixed code document from a file.
+ /// </summary>
+ /// <param name="path">The complete file path to be read.</param>
+ /// <param name="encoding">The character encoding to use.</param>
+ public void Load(string path, Encoding encoding)
+ {
+ Load(new StreamReader(path, encoding));
+ }
+
+ /// <summary>
+ /// Loads a mixed code document from a file.
+ /// </summary>
+ /// <param name="path">The complete file path to be read.</param>
+ /// <param name="encoding">The character encoding to use.</param>
+ /// <param name="detectEncodingFromByteOrderMarks">Indicates whether to look for byte order marks at the beginning of the file.</param>
+ public void Load(string path, Encoding encoding, bool detectEncodingFromByteOrderMarks)
+ {
+ Load(new StreamReader(path, encoding, detectEncodingFromByteOrderMarks));
+ }
+
+ /// <summary>
+ /// Loads a mixed code document from a file.
+ /// </summary>
+ /// <param name="path">The complete file path to be read.</param>
+ /// <param name="encoding">The character encoding to use.</param>
+ /// <param name="detectEncodingFromByteOrderMarks">Indicates whether to look for byte order marks at the beginning of the file.</param>
+ /// <param name="buffersize">The minimum buffer size.</param>
+ public void Load(string path, Encoding encoding, bool detectEncodingFromByteOrderMarks, int buffersize)
+ {
+ Load(new StreamReader(path, encoding, detectEncodingFromByteOrderMarks, buffersize));
+ }
+
+ /// <summary>
+ /// Loads the mixed code document from the specified TextReader.
+ /// </summary>
+ /// <param name="reader">The TextReader used to feed the HTML data into the document.</param>
+ public void Load(TextReader reader)
+ {
+ _codefragments.Clear();
+ _textfragments.Clear();
+
+ // all pseudo constructors get down to this one
+ StreamReader sr = reader as StreamReader;
+ if (sr != null)
+ {
+ _streamencoding = sr.CurrentEncoding;
+ }
+
+ _text = reader.ReadToEnd();
+ reader.Close();
+ Parse();
+ }
+
+ /// <summary>
+ /// Loads a mixed document from a text
+ /// </summary>
+ /// <param name="html">The text to load.</param>
+ public void LoadHtml(string html)
+ {
+ Load(new StringReader(html));
+ }
+
+ /// <summary>
+ /// Saves the mixed document to the specified stream.
+ /// </summary>
+ /// <param name="outStream">The stream to which you want to save.</param>
+ public void Save(Stream outStream)
+ {
+ StreamWriter sw = new StreamWriter(outStream, GetOutEncoding());
+ Save(sw);
+ }
+
+ /// <summary>
+ /// Saves the mixed document to the specified stream.
+ /// </summary>
+ /// <param name="outStream">The stream to which you want to save.</param>
+ /// <param name="encoding">The character encoding to use.</param>
+ public void Save(Stream outStream, Encoding encoding)
+ {
+ StreamWriter sw = new StreamWriter(outStream, encoding);
+ Save(sw);
+ }
+
+ /// <summary>
+ /// Saves the mixed document to the specified file.
+ /// </summary>
+ /// <param name="filename">The location of the file where you want to save the document.</param>
+ public void Save(string filename)
+ {
+ StreamWriter sw = new StreamWriter(filename, false, GetOutEncoding());
+ Save(sw);
+ }
+
+ /// <summary>
+ /// Saves the mixed document to the specified file.
+ /// </summary>
+ /// <param name="filename">The location of the file where you want to save the document.</param>
+ /// <param name="encoding">The character encoding to use.</param>
+ public void Save(string filename, Encoding encoding)
+ {
+ StreamWriter sw = new StreamWriter(filename, false, encoding);
+ Save(sw);
+ }
+
+ /// <summary>
+ /// Saves the mixed document to the specified StreamWriter.
+ /// </summary>
+ /// <param name="writer">The StreamWriter to which you want to save.</param>
+ public void Save(StreamWriter writer)
+ {
+ Save((TextWriter) writer);
+ }
+
+ /// <summary>
+ /// Saves the mixed document to the specified TextWriter.
+ /// </summary>
+ /// <param name="writer">The TextWriter to which you want to save.</param>
+ public void Save(TextWriter writer)
+ {
+ writer.Flush();
+ }
+
+ #endregion
+
+ #region Internal Methods
+
+ internal MixedCodeDocumentFragment CreateFragment(MixedCodeDocumentFragmentType type)
+ {
+ switch (type)
+ {
+ case MixedCodeDocumentFragmentType.Text:
+ return new MixedCodeDocumentTextFragment(this);
+
+ case MixedCodeDocumentFragmentType.Code:
+ return new MixedCodeDocumentCodeFragment(this);
+
+ default:
+ throw new NotSupportedException();
+ }
+ }
+
+ internal Encoding GetOutEncoding()
+ {
+ if (_streamencoding != null)
+ return _streamencoding;
+ return Encoding.Default;
+ }
+
+ #endregion
+
+ #region Private Methods
+
+ private void IncrementPosition()
+ {
+ _index++;
+ if (_c == 10)
+ {
+ _lineposition = 1;
+ _line++;
+ }
+ else
+ _lineposition++;
+ }
+
+ private void Parse()
+ {
+ _state = ParseState.Text;
+ _index = 0;
+ _currentfragment = CreateFragment(MixedCodeDocumentFragmentType.Text);
+
+ while (_index < _text.Length)
+ {
+ _c = _text[_index];
+ IncrementPosition();
+
+ switch (_state)
+ {
+ case ParseState.Text:
+ if (_index + TokenCodeStart.Length < _text.Length)
+ {
+ if (_text.Substring(_index - 1, TokenCodeStart.Length) == TokenCodeStart)
+ {
+ _state = ParseState.Code;
+ _currentfragment.Length = _index - 1 - _currentfragment.Index;
+ _currentfragment = CreateFragment(MixedCodeDocumentFragmentType.Code);
+ SetPosition();
+ continue;
+ }
+ }
+ break;
+
+ case ParseState.Code:
+ if (_index + TokenCodeEnd.Length < _text.Length)
+ {
+ if (_text.Substring(_index - 1, TokenCodeEnd.Length) == TokenCodeEnd)
+ {
+ _state = ParseState.Text;
+ _currentfragment.Length = _index + TokenCodeEnd.Length - _currentfragment.Index;
+ _index += TokenCodeEnd.Length;
+ _lineposition += TokenCodeEnd.Length;
+ _currentfragment = CreateFragment(MixedCodeDocumentFragmentType.Text);
+ SetPosition();
+ continue;
+ }
+ }
+ break;
+ }
+ }
+
+ _currentfragment.Length = _index - _currentfragment.Index;
+ }
+
+ private void SetPosition()
+ {
+ _currentfragment.Line = _line;
+ _currentfragment._lineposition = _lineposition;
+ _currentfragment.Index = _index - 1;
+ _currentfragment.Length = 0;
+ }
+
+ #endregion
+
+ #region Nested type: ParseState
+
+ private enum ParseState
+ {
+ Text,
+ Code
+ }
+
+ #endregion
+ }
+}
\ No newline at end of file |