net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/corext/phpdoc/PHPDocBufferCommentReader.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.corext.phpdoc;
  12
  13 import net.sourceforge.phpdt.core.IBuffer;
  14 import net.sourceforge.phpdt.internal.corext.util.Strings;
  15
  16 /**
  17  * Reads a phpdoc comment from a phpdoc comment. Skips star-character on begin
  18  * of line
  19  */
  20 public class PHPDocBufferCommentReader extends SingleCharReader {
  21
  22         private IBuffer fBuffer;
  23
  24         private int fCurrPos;
  25
  26         private int fStartPos;
  27
  28         private int fEndPos;
  29
  30         private boolean fWasNewLine;
  31
  32         public PHPDocBufferCommentReader(IBuffer buf, int start, int end) {
  33                 fBuffer = buf;
  34                 fStartPos = start + 3;
  35                 fEndPos = end - 2;
  36
  37                 reset();
  38         }
  39
  40         /**
  41          * @see java.io.Reader#read()
  42          */
  43         public int read() {
  44                 if (fCurrPos < fEndPos) {
  45                         char ch;
  46                         if (fWasNewLine) {
  47                                 do {
  48                                         ch = fBuffer.getChar(fCurrPos++);
  49                                 } while (fCurrPos < fEndPos && Character.isWhitespace(ch));
  50                                 if (ch == '*') {
  51                                         if (fCurrPos < fEndPos) {
  52                                                 do {
  53                                                         ch = fBuffer.getChar(fCurrPos++);
  54                                                 } while (ch == '*');
  55                                         } else {
  56                                                 return -1;
  57                                         }
  58                                 }
  59                         } else {
  60                                 ch = fBuffer.getChar(fCurrPos++);
  61                         }
  62                         fWasNewLine = Strings.isLineDelimiterChar(ch);
  63
  64                         return ch;
  65                 }
  66                 return -1;
  67         }
  68
  69         /**
  70          * @see java.io.Reader#close()
  71          */
  72         public void close() {
  73                 fBuffer = null;
  74         }
  75
  76         /**
  77          * @see java.io.Reader#reset()
  78          */
  79         public void reset() {
  80                 fCurrPos = fStartPos;
  81                 fWasNewLine = true;
  82         }
  83
  84 }