2 // System.Web.Compilation.AspTokenizer
5 // Gonzalo Paniagua Javier (gonzalo@ximian.com)
7 // (C) 2002,2003 Ximian, Inc (http://www.ximian.com)
11 // Permission is hereby granted, free of charge, to any person obtaining
12 // a copy of this software and associated documentation files (the
13 // "Software"), to deal in the Software without restriction, including
14 // without limitation the rights to use, copy, modify, merge, publish,
15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
17 // the following conditions:
19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
32 using System.Collections;
36 namespace System.Web.Compilation
40 public const int EOF = 0x0200000;
41 public const int IDENTIFIER = 0x0200001;
42 public const int DIRECTIVE = 0x0200002;
43 public const int ATTVALUE = 0x0200003;
44 public const int TEXT = 0x0200004;
45 public const int DOUBLEDASH = 0x0200005;
46 public const int CLOSING = 0x0200006;
53 StringBuilder sb, odds;
66 public AspTokenizer (TextReader reader)
69 sb = new StringBuilder ();
70 odds= new StringBuilder();
72 hasPutBack = inTag = false;
77 get { return verbatim; }
78 set { verbatim = value; }
81 public void put_back ()
84 throw new HttpException ("put_back called twice!");
87 position -= Value.Length;
90 public int get_token ()
94 position += Value.Length;
101 current_token = NextToken ();
102 return current_token;
105 bool is_identifier_start_character (char c)
107 return (Char.IsLetter (c) || c == '_' );
110 bool is_identifier_part_character (char c)
112 return (Char.IsLetterOrDigit (c) || c == '_' || c == '-');
115 void ungetc (int value)
120 // Only '/' passes through here now.
121 // If we ever let \n here, update 'line'
136 if (c == '\r' && sr.Peek () == '\n') {
154 int ReadAttValue (int start)
159 if (start == '"' || start == '\'') {
163 sb.Append ((char) start);
168 bool inServerTag = false;
170 while ((c = sr.Peek ()) != -1) {
171 if (c == '%' && last == '<') {
173 } else if (inServerTag && c == '>' && last == '%') {
175 } else if (!inServerTag) {
176 if (!quoted && c == '/') {
181 } else if (c == '>') {
185 } else if (!quoted && (c == '>' || Char.IsWhiteSpace ((char) c))) {
187 } else if (quoted && c == quoteChar && last != '\\') {
193 sb.Append ((char) c);
198 return Token.ATTVALUE;
207 while ((c = read_char ()) != -1){
210 sb.Append ((char) c);
214 if (inTag && expectAttrValue && (c == '"' || c == '\''))
215 return ReadAttValue (c);
219 sb.Append ((char) c);
225 sb.Append ((char) c);
229 if (current_token == '<' && "%/!".IndexOf ((char) c) != -1){
230 sb.Append ((char) c);
234 if (inTag && current_token == '%' && "@#=".IndexOf ((char) c) != -1){
235 sb.Append ((char) c);
239 if (inTag && c == '-' && sr.Peek () == '-'){
242 return Token.DOUBLEDASH;
246 sb.Append ((char) c);
247 while ((c = sr.Peek ()) != -1 && c != '<')
248 sb.Append ((char) read_char ());
250 return (c != -1 || sb.Length > 0) ? Token.TEXT : Token.EOF;
253 if (inTag && current_token == '=' && !Char.IsWhiteSpace ((char) c))
254 return ReadAttValue (c);
256 if (inTag && is_identifier_start_character ((char) c)){
257 sb.Append ((char) c);
258 while ((c = sr.Peek ()) != -1) {
259 if (!is_identifier_part_character ((char) c) && c != ':')
261 sb.Append ((char) read_char ());
264 if (current_token == '@' && Directive.IsDirective (sb.ToString ()))
265 return Token.DIRECTIVE;
267 return Token.IDENTIFIER;
270 if (!Char.IsWhiteSpace ((char) c)) {
271 sb.Append ((char) c);
274 // keep otherwise discarded characters in case we need.
275 odds.Append((char) c);
281 public string Value {
287 val = sb.ToString ();
294 return odds.ToString();
299 get { return inTag; }
300 set { inTag = value; }
303 // Hack for preventing confusion with VB comments (see bug #63451)
304 public bool ExpectAttrValue {
305 get { return expectAttrValue; }
306 set { expectAttrValue = value; }
309 public int BeginLine {
310 get { return begline; }
313 public int BeginColumn {
314 get { return begcol; }
321 public int EndColumn {
325 public int Position {
326 get { return position; }