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/*******************************************************************************
* Copyright (c) 1999, 2009 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.http;
import java.io.*;
import java.util.Hashtable;
import java.util.StringTokenizer;
public class StaticDataReader {
protected Http http;
protected static final String defaultMimeType = "application/octet-stream"; //$NON-NLS-1$
protected static final String defaultMimeTable = "mime.types"; //$NON-NLS-1$
protected static final String defaultStatusCodes = "status.codes"; //$NON-NLS-1$
/** file extentsions (String) => MIME type (String) */
protected Hashtable mimeTypes;
/** status code (Integer) => status phrase (String) */
protected Hashtable statusCodes;
/**
* Construct mime table from a standard mime.types file.
*/
public StaticDataReader(Http http) {
this.http = http;
InputStream in = getClass().getResourceAsStream(defaultMimeTable);
mimeTypes = parseMimeTypes(in);
in = getClass().getResourceAsStream(defaultStatusCodes);
statusCodes = parseStatusCodes(in);
}
/**
* Determine the mime type of a file based on the file extension.
* This method is more convenient to use than getMIMEType because
* takes a filename as an argument. It is also able to discern that
* files which are directories, such as
* http://www.ibm.com/ are assumed to be HTML, rather than appOctet.
*
* @param filename - the name of the file, which must
* not be null.
* @returns String - the mime type of the file.
*/
public String computeMimeType(String filename) {
int i = filename.lastIndexOf('.');
if (i >= 0) {
return (getMimeType(filename.substring(i + 1)));
}
return (getMimeType(filename));
}
/**
* This method was created in VisualAge.
* @return java.lang.String
* @param statusCode int
*/
public String computeStatusPhrase(int statusCode) {
String statusPhrase = (String) statusCodes.get(new Integer(statusCode));
if (statusPhrase != null) {
return (statusPhrase);
}
return (HttpMsg.HTTP_STATUS_CODE_NOT_FOUND);
}
private String getMimeType(String extension) {
String type = (String) mimeTypes.get(extension.toLowerCase());
if (type != null) {
return (type);
}
return (defaultMimeType);
}
/**
* Parses the default MIME type table.
*
* @return Default MIME type Hashtable
*/
private Hashtable parseMimeTypes(InputStream in) {
Hashtable resultMimeTypes = new Hashtable();
if (in != null) {
try {
BufferedReader rdr = new BufferedReader(new InputStreamReader(in, "8859_1")); //$NON-NLS-1$
while (true) {
String line = rdr.readLine();
if (line == null) /* EOF */
{
break;
}
if ((line.length() != 0) && (line.charAt(0) != '#')) { // skip comments and blank lines
StringTokenizer tokens = new StringTokenizer(line);
String type = tokens.nextToken();
while (tokens.hasMoreTokens()) {
String ext = tokens.nextToken();
resultMimeTypes.put(ext.toLowerCase(), type);
}
}
}
} catch (Exception e) {
http.logError(HttpMsg.HTTP_DEFAULT_MIME_TABLE_ERROR, e);
} finally {
try {
in.close();
} catch (IOException e) {
// TODO: consider logging
}
}
}
return (resultMimeTypes);
}
/**
* This method was created in VisualAge.
*/
private Hashtable parseStatusCodes(InputStream in) {
Hashtable resultStatusCodes = new Hashtable();
if (in != null) {
try {
BufferedReader rdr = new BufferedReader(new InputStreamReader(in, "8859_1")); //$NON-NLS-1$
while (true) {
String line = rdr.readLine();
if (line == null) /* EOF */
{
break;
}
if ((line.length() != 0) && (line.charAt(0) != '#')) { // skip comments and blank lines
int space = line.indexOf(' ');
Integer status = new Integer(line.substring(0, space));
String statusPhrase = line.substring(space + 1);
resultStatusCodes.put(status, statusPhrase);
}
}
} catch (Exception e) {
http.logError(HttpMsg.HTTP_STATUS_CODES_TABLE_ERROR, e);
} finally {
try {
in.close();
} catch (IOException e) {
// TODO: consider logging
}
}
}
return (resultStatusCodes);
}
/* TODO: Consider Removing this method
* Read alias data and populate a Hashtable.
* The inputstream is always closed.
*
* @param in InputStream from which to read alias data.
* @return Hashtable of aliases.
*/
/*
private static Hashtable parseAliases(InputStream in) {
Hashtable aliases = new Hashtable(37);
if (in != null) {
try {
try {
BufferedReader br = new BufferedReader(new InputStreamReader(in, "8859_1")); //$NON-NLS-1$
while (true) {
String line = br.readLine();
if (line == null) // EOF
{
break; // done
}
Tokenizer tokenizer = new Tokenizer(line);
String master = tokenizer.getString("#"); //$NON-NLS-1$
if (master != null) {
master = master.toUpperCase();
aliases.put(master, master);
parseloop: while (true) {
String alias = tokenizer.getString("#"); //$NON-NLS-1$
if (alias == null) {
break parseloop;
}
aliases.put(alias.toUpperCase(), master);
}
}
}
} catch (IOException e) {
if (Http.DEBUG) {
e.printStackTrace();
}
}
} finally {
try {
in.close();
} catch (IOException ee) {
// TODO: consider logging
}
}
}
return (aliases);
}
*/
}
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