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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2017 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://oss.oracle.com/licenses/CDDL+GPL-1.1
* or LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
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* If you wish your version of this file to be governed by only the CDDL or
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* recipient has the option to distribute your version of this file under
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/* Generated By:JavaCC: Do not edit this line. SimpleCharStream.java Version 4.0 */
package com.sun.xml.xsom.impl.scd;
/**
* An implementation of interface CharStream, where the stream is assumed to
* contain only ASCII characters (without unicode processing).
*/
public class SimpleCharStream
{
public static final boolean staticFlag = false;
int bufsize;
int available;
int tokenBegin;
public int bufpos = -1;
protected int bufline[];
protected int bufcolumn[];
protected int column = 0;
protected int line = 1;
protected boolean prevCharIsCR = false;
protected boolean prevCharIsLF = false;
protected java.io.Reader inputStream;
protected char[] buffer;
protected int maxNextCharInd = 0;
protected int inBuf = 0;
protected int tabSize = 8;
protected void setTabSize(int i) { tabSize = i; }
protected int getTabSize(int i) { return tabSize; }
protected void ExpandBuff(boolean wrapAround)
{
char[] newbuffer = new char[bufsize + 2048];
int newbufline[] = new int[bufsize + 2048];
int newbufcolumn[] = new int[bufsize + 2048];
try
{
if (wrapAround)
{
System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);
System.arraycopy(buffer, 0, newbuffer,
bufsize - tokenBegin, bufpos);
buffer = newbuffer;
System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);
System.arraycopy(bufline, 0, newbufline, bufsize - tokenBegin, bufpos);
bufline = newbufline;
System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);
System.arraycopy(bufcolumn, 0, newbufcolumn, bufsize - tokenBegin, bufpos);
bufcolumn = newbufcolumn;
maxNextCharInd = (bufpos += (bufsize - tokenBegin));
}
else
{
System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);
buffer = newbuffer;
System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);
bufline = newbufline;
System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);
bufcolumn = newbufcolumn;
maxNextCharInd = (bufpos -= tokenBegin);
}
}
catch (Throwable t)
{
throw new Error(t.getMessage());
}
bufsize += 2048;
available = bufsize;
tokenBegin = 0;
}
protected void FillBuff() throws java.io.IOException
{
if (maxNextCharInd == available)
{
if (available == bufsize)
{
if (tokenBegin > 2048)
{
bufpos = maxNextCharInd = 0;
available = tokenBegin;
}
else if (tokenBegin < 0)
bufpos = maxNextCharInd = 0;
else
ExpandBuff(false);
}
else if (available > tokenBegin)
available = bufsize;
else if ((tokenBegin - available) < 2048)
ExpandBuff(true);
else
available = tokenBegin;
}
int i;
try {
if ((i = inputStream.read(buffer, maxNextCharInd,
available - maxNextCharInd)) == -1)
{
inputStream.close();
throw new java.io.IOException();
}
else
maxNextCharInd += i;
return;
}
catch(java.io.IOException e) {
--bufpos;
backup(0);
if (tokenBegin == -1)
tokenBegin = bufpos;
throw e;
}
}
public char BeginToken() throws java.io.IOException
{
tokenBegin = -1;
char c = readChar();
tokenBegin = bufpos;
return c;
}
protected void UpdateLineColumn(char c)
{
column++;
if (prevCharIsLF)
{
prevCharIsLF = false;
line += (column = 1);
}
else if (prevCharIsCR)
{
prevCharIsCR = false;
if (c == '\n')
{
prevCharIsLF = true;
}
else
line += (column = 1);
}
switch (c)
{
case '\r' :
prevCharIsCR = true;
break;
case '\n' :
prevCharIsLF = true;
break;
case '\t' :
column--;
column += (tabSize - (column % tabSize));
break;
default :
break;
}
bufline[bufpos] = line;
bufcolumn[bufpos] = column;
}
public char readChar() throws java.io.IOException
{
if (inBuf > 0)
{
--inBuf;
if (++bufpos == bufsize)
bufpos = 0;
return buffer[bufpos];
}
if (++bufpos >= maxNextCharInd)
FillBuff();
char c = buffer[bufpos];
UpdateLineColumn(c);
return (c);
}
/**
* @deprecated
* @see #getEndColumn
*/
public int getColumn() {
return bufcolumn[bufpos];
}
/**
* @deprecated
* @see #getEndLine
*/
public int getLine() {
return bufline[bufpos];
}
public int getEndColumn() {
return bufcolumn[bufpos];
}
public int getEndLine() {
return bufline[bufpos];
}
public int getBeginColumn() {
return bufcolumn[tokenBegin];
}
public int getBeginLine() {
return bufline[tokenBegin];
}
public void backup(int amount) {
inBuf += amount;
if ((bufpos -= amount) < 0)
bufpos += bufsize;
}
public SimpleCharStream(java.io.Reader dstream, int startline,
int startcolumn, int buffersize)
{
inputStream = dstream;
line = startline;
column = startcolumn - 1;
available = bufsize = buffersize;
buffer = new char[buffersize];
bufline = new int[buffersize];
bufcolumn = new int[buffersize];
}
public SimpleCharStream(java.io.Reader dstream, int startline,
int startcolumn)
{
this(dstream, startline, startcolumn, 4096);
}
public SimpleCharStream(java.io.Reader dstream)
{
this(dstream, 1, 1, 4096);
}
public void ReInit(java.io.Reader dstream, int startline,
int startcolumn, int buffersize)
{
inputStream = dstream;
line = startline;
column = startcolumn - 1;
if (buffer == null || buffersize != buffer.length)
{
available = bufsize = buffersize;
buffer = new char[buffersize];
bufline = new int[buffersize];
bufcolumn = new int[buffersize];
}
prevCharIsLF = prevCharIsCR = false;
tokenBegin = inBuf = maxNextCharInd = 0;
bufpos = -1;
}
public void ReInit(java.io.Reader dstream, int startline,
int startcolumn)
{
ReInit(dstream, startline, startcolumn, 4096);
}
public void ReInit(java.io.Reader dstream)
{
ReInit(dstream, 1, 1, 4096);
}
public SimpleCharStream(java.io.InputStream dstream, String encoding, int startline,
int startcolumn, int buffersize) throws java.io.UnsupportedEncodingException
{
this(encoding == null ? new java.io.InputStreamReader(dstream) : new java.io.InputStreamReader(dstream, encoding), startline, startcolumn, buffersize);
}
public SimpleCharStream(java.io.InputStream dstream, int startline,
int startcolumn, int buffersize)
{
this(new java.io.InputStreamReader(dstream), startline, startcolumn, buffersize);
}
public SimpleCharStream(java.io.InputStream dstream, String encoding, int startline,
int startcolumn) throws java.io.UnsupportedEncodingException
{
this(dstream, encoding, startline, startcolumn, 4096);
}
public SimpleCharStream(java.io.InputStream dstream, int startline,
int startcolumn)
{
this(dstream, startline, startcolumn, 4096);
}
public SimpleCharStream(java.io.InputStream dstream, String encoding) throws java.io.UnsupportedEncodingException
{
this(dstream, encoding, 1, 1, 4096);
}
public SimpleCharStream(java.io.InputStream dstream)
{
this(dstream, 1, 1, 4096);
}
public void ReInit(java.io.InputStream dstream, String encoding, int startline,
int startcolumn, int buffersize) throws java.io.UnsupportedEncodingException
{
ReInit(encoding == null ? new java.io.InputStreamReader(dstream) : new java.io.InputStreamReader(dstream, encoding), startline, startcolumn, buffersize);
}
public void ReInit(java.io.InputStream dstream, int startline,
int startcolumn, int buffersize)
{
ReInit(new java.io.InputStreamReader(dstream), startline, startcolumn, buffersize);
}
public void ReInit(java.io.InputStream dstream, String encoding) throws java.io.UnsupportedEncodingException
{
ReInit(dstream, encoding, 1, 1, 4096);
}
public void ReInit(java.io.InputStream dstream)
{
ReInit(dstream, 1, 1, 4096);
}
public void ReInit(java.io.InputStream dstream, String encoding, int startline,
int startcolumn) throws java.io.UnsupportedEncodingException
{
ReInit(dstream, encoding, startline, startcolumn, 4096);
}
public void ReInit(java.io.InputStream dstream, int startline,
int startcolumn)
{
ReInit(dstream, startline, startcolumn, 4096);
}
public String GetImage()
{
if (bufpos >= tokenBegin)
return new String(buffer, tokenBegin, bufpos - tokenBegin + 1);
else
return new String(buffer, tokenBegin, bufsize - tokenBegin) +
new String(buffer, 0, bufpos + 1);
}
public char[] GetSuffix(int len)
{
char[] ret = new char[len];
if ((bufpos + 1) >= len)
System.arraycopy(buffer, bufpos - len + 1, ret, 0, len);
else
{
System.arraycopy(buffer, bufsize - (len - bufpos - 1), ret, 0,
len - bufpos - 1);
System.arraycopy(buffer, 0, ret, len - bufpos - 1, bufpos + 1);
}
return ret;
}
public void Done()
{
buffer = null;
bufline = null;
bufcolumn = null;
}
/**
* Method to adjust line and column numbers for the start of a token.
*/
public void adjustBeginLineColumn(int newLine, int newCol)
{
int start = tokenBegin;
int len;
if (bufpos >= tokenBegin)
{
len = bufpos - tokenBegin + inBuf + 1;
}
else
{
len = bufsize - tokenBegin + bufpos + 1 + inBuf;
}
int i = 0, j = 0, k = 0;
int nextColDiff = 0, columnDiff = 0;
while (i < len &&
bufline[j = start % bufsize] == bufline[k = ++start % bufsize])
{
bufline[j] = newLine;
nextColDiff = columnDiff + bufcolumn[k] - bufcolumn[j];
bufcolumn[j] = newCol + columnDiff;
columnDiff = nextColDiff;
i++;
}
if (i < len)
{
bufline[j] = newLine++;
bufcolumn[j] = newCol + columnDiff;
while (i++ < len)
{
if (bufline[j = start % bufsize] != bufline[++start % bufsize])
bufline[j] = newLine++;
else
bufline[j] = newLine;
}
}
line = bufline[j];
column = bufcolumn[j];
}
}
