reorganized file layout (part 1: moves and renames)

[org.ibex.core.git] / src / gnu / regexp / CharIndexedReader.java

diff --git a/src/gnu/regexp/CharIndexedReader.java b/src/gnu/regexp/CharIndexedReader.java
deleted file mode 100644 (file)
index aa0fa5a..0000000
--- a/src/gnu/regexp/CharIndexedReader.java
+++ /dev/null
@@ -1,142 +0,0 @@
-/*
- *  gnu/regexp/CharIndexedReader.java
- *  Copyright (C) 2001 Lee Sau Dan
- *  Based on gnu.regexp.CharIndexedInputStream by Wes Biggs
- *
- *  This library is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU Lesser General Public License as published
- *  by the Free Software Foundation; either version 2.1 of the License, or
- *  (at your option) any later version.
- *
- *  This library is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU Lesser General Public License for more details.
- *
- *  You should have received a copy of the GNU Lesser General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-package gnu.regexp;
-import java.io.Reader;
-import java.io.BufferedReader;
-import java.io.IOException;
-
-// TODO: move(x) shouldn't rely on calling next() x times
-
-class CharIndexedReader implements CharIndexed {
-    private static final int BUFFER_INCREMENT = 1024;
-    private static final int UNKNOWN = Integer.MAX_VALUE; // value for end
-    
-    private final BufferedReader br;
-    // so that we don't try to reset() right away
-    private int index = -1;
-
-    private int bufsize = BUFFER_INCREMENT;
-
-    private int end = UNKNOWN;
-
-    private char cached = OUT_OF_BOUNDS;
-
-    // Big enough for a \r\n pair
-    // lookBehind[0] = most recent
-    // lookBehind[1] = second most recent
-    private char[] lookBehind = new char[] { OUT_OF_BOUNDS, OUT_OF_BOUNDS }; 
-  
-    CharIndexedReader(Reader reader, int index) {
-       if (reader instanceof BufferedReader) {
-           br = (BufferedReader) reader; 
-       } else {
-           br = new BufferedReader(reader,BUFFER_INCREMENT);
-       }
-       next();
-       if (index > 0) move(index);
-    }
-    
-    private boolean next() {
-       lookBehind[1] = lookBehind[0];
-       lookBehind[0] = cached;
-
-       if (end == 1) {
-           cached = OUT_OF_BOUNDS;
-           return false;
-       }
-       end--; // closer to end
-       
-       try {
-           if (index != -1) {
-               br.reset();
-           }
-           int i = br.read();
-           br.mark(bufsize);
-           if (i == -1) {
-               end = 1;
-               cached = OUT_OF_BOUNDS;
-               return false;
-           }
-
-           // convert the byte read into a char
-           cached = (char) i;
-           index = 1;
-       } catch (IOException e) { 
-           e.printStackTrace();
-           cached = OUT_OF_BOUNDS;
-           return false; 
-       }
-       return true;
-    }
-    
-    public char charAt(int index) {
-       if (index == 0) {
-           return cached;
-       } else if (index >= end) {
-           return OUT_OF_BOUNDS;
-       } else if (index >= bufsize) {
-           // Allocate more space in the buffer.
-           try {
-               while (bufsize <= index) bufsize += BUFFER_INCREMENT;
-               br.reset();
-               br.mark(bufsize);
-               br.skip(index-1);
-           } catch (IOException e) { }
-       } else if (this.index != index) {
-           try {
-               br.reset();
-               br.skip(index-1);
-           } catch (IOException e) { }
-       } else if (index == -1) {
-           return lookBehind[0];
-       } else if (index == -2) {
-           return lookBehind[1];
-       } else if (index < -2) {
-           return OUT_OF_BOUNDS;
-       }
-
-       char ch = OUT_OF_BOUNDS;
-       
-       try {
-           int i = br.read();
-           this.index = index+1; // this.index is index of next pos relative to charAt(0)
-           if (i == -1) {
-               // set flag that next should fail next time?
-               end = index;
-               return ch;
-           }
-           ch = (char) i;
-       } catch (IOException ie) { }
-       
-       return ch;
-    }
-    
-    public boolean move(int index) {
-       // move read position [index] clicks from 'charAt(0)'
-       boolean retval = true;
-       while (retval && (index-- > 0)) retval = next();
-       return retval;
-    }
-    
-    public boolean isValid() {
-       return (cached != OUT_OF_BOUNDS);
-    }
-}