/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.jsp.java;
import com.caucho.java.JavaWriter;
import com.caucho.util.CharBuffer;
import com.caucho.vfs.WriteStream;
import java.io.IOException;
/**
* Writing class for generated Java code.
*/
public class JspJavaWriter extends JavaWriter {
// The JSP generator
private JavaJspGenerator _gen;
private String _filename;
private int _line = -1;
// Current text node.
private CharBuffer _cb = CharBuffer.allocate();
public JspJavaWriter(WriteStream os, JavaJspGenerator gen)
{
super(os);
_gen = gen;
}
/**
* Adds text to the current buffer.
*/
public void addText(String text)
throws IOException
{
if (_filename != null && _cb.length() == 0) {
super.setLocation(_filename, _line);
}
_cb.append(text);
}
/**
* Sets the source filename and line.
*
* @param filename the filename of the source file.
* @param line the line of the source file.
*/
public void setLocation(String filename, int line)
throws IOException
{
_filename = filename;
_line = line;
}
/**
* Flushes text.
*/
/**
* Generates the code for the static text
*
* @param out the output writer for the generated java.
*/
protected void flushText()
throws IOException
{
String filename = _filename;
int line = _line;
_filename = null;
if (_cb.length() > 0) {
int length = _cb.length();
_cb.clear();
generateText(_cb.getBuffer(), 0, length);
}
if (filename != null)
super.setLocation(filename, line);
}
/**
* Generates text from a string.
*
* @param out the output writer for the generated java.
* @param string the text to generate.
* @param offset the offset into the text.
* @param length the length of the text.
*/
private void generateText(char []text, int offset, int length)
throws IOException
{
if (length > 32000) {
generateText(text, offset, 16 * 1024);
generateText(text, offset + 16 * 1024, length - 16 * 1024);
return;
}
if (length == 1) {
int ch = text[offset];
print("out.write('");
switch (ch) {
case '\\':
print("\\\\");
break;
case '\'':
print("\\'");
break;
case '\n':
print("\\n");
break;
case '\r':
print("\\r");
break;
default:
print((char) ch);
break;
}
println("');");
}
else {
int index = _gen.addString(new String(text, offset, length));
print("out.write(_jsp_string" + index + ", 0, ");
println("_jsp_string" + index + ".length);");
}
}
/**
* Prints a Java escaped string
*/
public void printJavaString(String s)
throws IOException
{
flushText();
super.printJavaString(s);
}
/**
* Pushes an indentation depth.
*/
public void pushDepth()
throws IOException
{
flushText();
super.pushDepth();
}
/**
* Pops an indentation depth.
*/
public void popDepth()
throws IOException
{
flushText();
super.popDepth();
}
/**
* Prints a string
*/
public void print(String s)
throws IOException
{
flushText();
super.print(s);
}
/**
* Prints a character.
*/
public void print(char ch)
throws IOException
{
flushText();
super.print(ch);
}
/**
* Prints a boolean.
*/
public void print(boolean b)
throws IOException
{
flushText();
super.print(b);
}
/**
* Prints an integer.
*/
public void print(int i)
throws IOException
{
flushText();
super.print(i);
}
/**
* Prints an long
*/
public void print(long l)
throws IOException
{
flushText();
super.print(l);
}
/**
* Prints an object.
*/
public void print(Object o)
throws IOException
{
flushText();
super.print(o);
}
/**
* Prints a string with a new line
*/
public void println(String s)
throws IOException
{
flushText();
super.println(s);
}
/**
* Prints a boolean with a new line
*/
public void println(boolean v)
throws IOException
{
flushText();
super.println(v);
}
/**
* Prints a character.
*/
public void println(char ch)
throws IOException
{
flushText();
super.println(ch);
}
/**
* Prints an integer with a new line
*/
public void println(int v)
throws IOException
{
flushText();
super.println(v);
}
/**
* Prints an long with a new line
*/
public void println(long v)
throws IOException
{
flushText();
super.println(v);
}
/**
* Prints an object with a new line
*/
public void println(Object v)
throws IOException
{
flushText();
super.println(v);
}
/**
* Prints a newline
*/
public void println()
throws IOException
{
flushText();
super.println();
}
}