File	Doc	Category	Size	Date	Package
StreamCharacterIterator.java	API Doc	Java SE 6 API	3848	Tue Jun 10 00:22:24 BST 2008	com.sun.org.apache.regexp.internal

StreamCharacterIterator

• java.lang.Object

Fields Summary
private final InputStream	is Underlying is
private final StringBuffer	buff Buffer of read chars
private boolean	closed read end?

Constructors Summary
public StreamCharacterIterator(InputStream is) param is an InputStream, which is parsed this.is = is; this.buff = new StringBuffer(512); this.closed = false;

Methods Summary
public char	charAt(int pos) return a character at the specified position. try { ensure(pos); return buff.charAt(pos); } catch (IOException e) { throw new StringIndexOutOfBoundsException(e.getMessage()); }
private void	ensure(int idx) Reads chars up to the idx if (closed) { return; } if (idx < buff.length()) { return; } read(idx + 1 - buff.length());
public boolean	isEnd(int pos) return true iff if the specified index is after the end of the character stream if (buff.length() > pos) { return false; } else { try { ensure(pos); return (buff.length() <= pos); } catch (IOException e) { throw new StringIndexOutOfBoundsException(e.getMessage()); } }
private int	read(int n) Reads n characters from the stream and appends them to the buffer if (closed) { return 0; } int c; int i = n; while (--i >= 0) { c = is.read(); if (c < 0) // EOF { closed = true; break; } buff.append((char) c); } return n - i;
private void	readAll() Reads rest of the stream. while(! closed) { read(1000); }
public java.lang.String	substring(int beginIndex, int endIndex) return a substring try { ensure(endIndex); return buff.toString().substring(beginIndex, endIndex); } catch (IOException e) { throw new StringIndexOutOfBoundsException(e.getMessage()); }
public java.lang.String	substring(int beginIndex) return a substring try { readAll(); return buff.toString().substring(beginIndex); } catch (IOException e) { throw new StringIndexOutOfBoundsException(e.getMessage()); }