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/*
* Copyright (C) 2001-2013 Michael Fuchs
*
* This file is part of herold.
*
* herold 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.
*
* herold 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 herold. If not, see <http://www.gnu.org/licenses/>.
*/
package org.dbdoclet.template;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.Iterator;
import java.util.Map;
import org.dbdoclet.service.StringServices;
public class TemplateTransformer {
private BufferedReader reader;
public static TemplateTransformer newInstance(File template)
throws TemplateTransformException {
if (template == null) {
throw new IllegalArgumentException("The argument template may not be null!");
}
BufferedReader reader = null;
try {
reader = new BufferedReader(new FileReader(template));
} catch (IOException oops) {
throw new TemplateTransformException(oops.getMessage(), oops);
}
return new TemplateTransformer(reader);
}
public static TemplateTransformer newInstance(BufferedReader template)
throws TemplateTransformException {
if (template == null) {
throw new IllegalArgumentException("The argument template may not be null!");
}
return new TemplateTransformer(template);
}
public static TemplateTransformer newInstance(String template)
throws TemplateTransformException {
if (template == null) {
throw new IllegalArgumentException("The argument template may not be null!");
}
return new TemplateTransformer(new BufferedReader(new StringReader(template)));
}
private TemplateTransformer(BufferedReader reader) {
this.reader = reader;
}
public String transform(Map<String, String> vars)
throws TemplateTransformException {
StringWriter buffer = new StringWriter();
transform(vars, new PrintWriter(buffer));
return buffer.toString();
}
public void transform(Map<String, String> vars, String fileName)
throws TemplateTransformException {
if (fileName == null) {
throw new IllegalArgumentException("The argument fileName must not be null!");
}
transform(vars, new File(fileName));
}
public void transform(Map<String, String> vars, File file)
throws TemplateTransformException {
if (file == null) {
throw new IllegalArgumentException("The argument file must not be null!");
}
try {
// if (file.getName().equals("default.css")) {
// trace = true;
// }
transform(vars, new FileWriter(file));
} catch (IOException oops) {
throw new TemplateTransformException(oops.getMessage(), oops);
}
}
public void transform(Map<String, String> vars, FileWriter fileWriter)
throws TemplateTransformException {
if (fileWriter == null) {
throw new IllegalArgumentException("The argument fileWriter must not be null!");
}
PrintWriter writer = new PrintWriter(fileWriter);
transform(vars, writer);
writer.close();
}
public void transform(Map<String, String> vars, PrintWriter writer)
throws TemplateTransformException {
if (reader == null) {
throw new IllegalStateException("The field reader may not be null!");
}
if (vars == null) {
throw new IllegalArgumentException("The argument vars may not be null!");
}
if (writer == null) {
throw new IllegalArgumentException("The argument writer may not be null!");
}
try {
Iterator<String> iterator;
String name;
Object value;
String line;
StringBuffer buffer = new StringBuffer();
while ((line = reader.readLine()) != null ) {
if (line.trim().length() == 0) {
buffer.append(line);
buffer.append('\n');
continue;
}
if (line.indexOf('$') == -1) {
buffer.append(line);
buffer.append('\n');
continue;
}
// if (trace) {
// System.out.println("line=" + line);
// }
iterator = vars.keySet().iterator();
while (iterator.hasNext()) {
name = iterator.next();
value = vars.get(name);
if (value != null) {
name = "${" + name + "}";
// if (trace && name.equals("${css.hl1.font}")) {
// System.out.println("name=" + name);
// }
line = StringServices.replace(line, name, value.toString());
// if (trace && name.equals("${css.hl1.font}")) {
// System.out.println("new line=" + line);
// }
}
}
buffer.append(line);
buffer.append('\n');
}
reader.close();
// String str = ReplaceServices.replaceAll(buffer.toString(), "\\$\\{\\w*\\}", "");
String str = buffer.toString();
BufferedReader bufferReader = new BufferedReader(new StringReader(str));
while ((line = bufferReader.readLine()) != null ) {
writer.println(line);
}
bufferReader.close();
} catch (Exception oops) {
throw new TemplateTransformException(oops.getMessage(), oops);
}
}
}
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