/**
* Created with IntelliJ IDEA.
* User: andrei
* Date: 16/10/13
* Time: 10:47
* To change this template use File | Settings | File Templates.
*/
/*
* Copyright 2012,2013 Andrei Mikhailov
*
* This file is part of bystroTeX.
*
* bystroTeX 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 3 of the License, or
* (at your option) any later version.
*
* bystroTeX 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with bystroTeX. If not, see .
*/
import org.scilab.forge.jlatexmath.ParseException;
import org.scilab.forge.jlatexmath.TeXConstants;
import org.scilab.forge.jlatexmath.TeXFormula;
import org.scilab.forge.jlatexmath.TeXIcon;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import javax.xml.parsers.*;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import java.awt.Color;
/**
* Created with IntelliJ IDEA.
* User: andrei
* Date: 29/06/13
* Time: 15:10
*
* Usage:
* java -cp jlatexmath.jar LaTeXServer pipename.fifo logfilename.txt
* The program receives the description of the formula in the XML format on the pipe pipename.fifo
* The XML contains various parameters of the formula, including the LaTeX code and the filename where to save png
* In return, it writes to the same pipename.fifo the XML file containing at least the ``depth'' node, which
* encodes the formula offset. It also saves the resulting png in the file whose name was provided in the input XML.
*/
public class LaTeXServer {
public static FileReader rcv(String pipename) {
FileReader inputStream = null;
try {
inputStream = new FileReader(pipename);
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
return inputStream;
}
public static void snd(String s, String pipename) {
FileWriter outputStream = null;
try {
outputStream = new FileWriter(pipename);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
// System.out.println("======================== WAITING JUST SENT DATA");
outputStream.write(s);
outputStream.close();
// System.out.println("======================== CLOSED PIPE");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static Document processLaTeX(String tex, Integer sz, String fname, java.awt.Color bg, java.awt.Color fg) {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = null;
try {
builder = factory.newDocumentBuilder();
} catch (ParserConfigurationException e) {
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
Document domOut = builder.newDocument();
try {
TeXFormula formula = new TeXFormula(tex);
TeXIcon ti = formula.createTeXIcon(TeXConstants.STYLE_DISPLAY, sz);
int height = ti.getIconHeight();
int newdepth = ti.getIconDepth();
/*
if ((2 * height) > (3 * sz)) {
newdepth = newdepth + 10; // this is a hack around the jlatexmath bug
formula = formula.addStrut(TeXConstants.UNIT_PIXEL, 4, 1, newdepth);
}
*/
// formula.createPNG(TeXConstants.STYLE_DISPLAY, sz, fname, java.awt.Color.WHITE, java.awt.Color.BLACK);
formula.createPNG(TeXConstants.STYLE_DISPLAY, sz, fname, bg, fg);
Element root = domOut.createElement("report");
domOut.appendChild(root);
Element depthElem = domOut.createElement("depth");
root.appendChild(depthElem);
depthElem.appendChild(domOut.createTextNode(Integer.toString(newdepth)));
return domOut;
} catch (ParseException e) {
Element root = domOut.createElement("report");
domOut.appendChild(root);
Element errorElem = domOut.createElement("error");
root.appendChild(errorElem);
errorElem.appendChild(domOut.createTextNode(e.getMessage()));
return domOut;
}
}
/**
* @param args
*/
public static void main(String[] args) {
Boolean doMainLoop = true;
FileWriter log = null;
try {
log = new FileWriter(args[1]);
log.write("Starting LaTeXServer\n");
log.flush();
} catch (IOException e) {
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
while (doMainLoop) {
FileReader inputStream = rcv(args[0]);
BufferedReader br = new BufferedReader(inputStream);
String line1;
try {
line1 = br.readLine();
log.write("--------------------------\n" + line1 + "\n");
log.flush();
} catch (IOException e) {
// TODO Auto-generated catch block
line1 = "ERROR";
e.printStackTrace();
}
String sz_str;
try {
if (line1.equals("HI")) {
try {
inputStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
snd("LISTENING", args[0]);
} else if (line1.equals("STOP")) {
doMainLoop = false;
try {
inputStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} else if (line1.equals("XML")) {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = null;
try {
builder = factory.newDocumentBuilder();
} catch (ParserConfigurationException e) {
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
InputSource is = new InputSource(br);
try {
Document dom = builder.parse(is);
Element formula = dom.getDocumentElement();
Integer sz = Integer.parseInt(formula.getAttribute("size"));
String fn = formula.getAttribute("filename");
String fgcol = formula.getAttribute("fg");
String bgcol = formula.getAttribute("bg");
String tex = formula.getTextContent();
log.write(fn + " \n" + tex + "\nsize:" + formula.getAttribute("size") + "\n");
log.flush();
inputStream.close();
String[] bgcols = bgcol.split(":");
String[] fgcols = fgcol.split(":");
java.awt.Color bg = new Color(Integer.parseInt(bgcols[0]),
Integer.parseInt(bgcols[1]),
Integer.parseInt(bgcols[2]));
java.awt.Color fg = new Color(Integer.parseInt(fgcols[0]),
Integer.parseInt(fgcols[1]),
Integer.parseInt(fgcols[2]));
Document domOut = processLaTeX(tex, sz, fn, bg, fg);
FileWriter outputStream = new FileWriter(args[0]);
Transformer transformer = null;
Transformer logTrans = null;
try {
transformer = TransformerFactory.newInstance().newTransformer();
logTrans = TransformerFactory.newInstance().newTransformer();
} catch (TransformerConfigurationException e) {
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
StreamResult strRes = new StreamResult(outputStream);
StreamResult strLog = new StreamResult(log);
DOMSource source = new DOMSource(domOut);
try {
transformer.transform(source, strRes);
outputStream.flush();
outputStream.close();
logTrans.transform(source, strLog);
log.flush();
} catch (TransformerException e) {
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
} catch (SAXException e) {
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
} else {
try {
inputStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
doMainLoop = false;
System.err.println("*** ERROR: unknown command received by LaTeXServer ***");
}
log.write("========\n");
log.flush();
} catch (NumberFormatException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
try {
log.close();
} catch (IOException e) {
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
}
}