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package fi.iki.elonen;
/*
* #%L
* NanoHttpd-Webserver-Markdown-Plugin
* %%
* Copyright (C) 2012 - 2015 nanohttpd
* %%
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the nanohttpd nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* #L%
*/
import static fi.iki.elonen.NanoHTTPD.Response.Status.OK;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.pegdown.PegDownProcessor;
/**
* @author Paul S. Hawke (paul.hawke@gmail.com) On: 9/13/13 at 4:03 AM
*/
public class MarkdownWebServerPlugin implements WebServerPlugin {
/**
* logger to log to.
*/
private static final Logger LOG = Logger.getLogger(MarkdownWebServerPlugin.class.getName());
private final PegDownProcessor processor;
public MarkdownWebServerPlugin() {
this.processor = new PegDownProcessor();
}
@Override
public boolean canServeUri(String uri, File rootDir) {
File f = new File(rootDir, uri);
return f.exists();
}
@Override
public void initialize(Map<String, String> commandLineOptions) {
}
private String readSource(File file) {
FileReader fileReader = null;
BufferedReader reader = null;
try {
fileReader = new FileReader(file);
reader = new BufferedReader(fileReader);
String line = null;
StringBuilder sb = new StringBuilder();
do {
line = reader.readLine();
if (line != null) {
sb.append(line).append("\n");
}
} while (line != null);
reader.close();
return sb.toString();
} catch (Exception e) {
MarkdownWebServerPlugin.LOG.log(Level.SEVERE, "could not read source", e);
return null;
} finally {
try {
if (fileReader != null) {
fileReader.close();
}
if (reader != null) {
reader.close();
}
} catch (IOException ignored) {
MarkdownWebServerPlugin.LOG.log(Level.FINEST, "close failed", ignored);
}
}
}
@Override
public NanoHTTPD.Response serveFile(String uri, Map<String, String> headers, NanoHTTPD.IHTTPSession session, File file, String mimeType) {
String markdownSource = readSource(file);
byte[] bytes;
try {
bytes = this.processor.markdownToHtml(markdownSource).getBytes("UTF-8");
} catch (UnsupportedEncodingException e) {
MarkdownWebServerPlugin.LOG.log(Level.SEVERE, "encoding problem, responding nothing", e);
bytes = new byte[0];
}
return markdownSource == null ? null : new NanoHTTPD.Response(OK, NanoHTTPD.MIME_HTML, new ByteArrayInputStream(bytes), bytes.length);
}
}
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