/* * @(#)MimeTable.java 1.12 97/04/08 James Gosling * * Copyright (c) 1994,1996 Sun Microsystems, Inc. All Rights Reserved. * * Permission to use, copy, modify, and distribute this software and its * documentation for NON-COMMERCIAL purposes and without fee is hereby * granted provided that this copyright notice appears in all copies. Please * refer to the file "copyright.html" for further important copyright and * licensing information. * * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, * OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY * LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR * ITS DERIVATIVES. */ package sun.net.www;import java.io.*;import java.util.Calendar;import java.util.Date;import java.net.URL;import java.net.FileNameMap;import java.util.Hashtable;import java.util.Enumeration;import java.util.Properties;import java.util.StringTokenizer; public class MimeTable implements FileNameMap { /** Keyed by content type, returns MimeEntries */ private Hashtable entries = new Hashtable(); /** Keyed by file extension (with the .), returns MimeEntries */ private Hashtable extensionMap = new Hashtable(); // Will be reset if in the platform-specific data file private static String tempFileTemplate = System.getProperty("content.types.temp.file.template", "/tmp/%s"); private static final String filePreamble = "sun.net.www MIME content-types table"; private static final String fileMagic = "#" + filePreamble; private static MimeTable defaultInstance = null; private MimeTable() { load(); } /** * Get the single instance of this class. First use will load the * table from a data file. */ public static MimeTable getDefaultTable() { if (defaultInstance == null) { defaultInstance = new MimeTable(); URLConnection.fileNameMap = defaultInstance; } return defaultInstance; } public synchronized int getSize() { return entries.size(); } public synchronized String getContentTypeFor(String fileName) { MimeEntry entry = findByFileName(fileName); if (entry != null) { return entry.getType(); } else { return null; } } public synchronized void add(MimeEntry m) { entries.put(m.getType(), m); String exts[] = m.getExtensions(); if (exts == null) { return; } for (int i = 0; i < exts.length; i++) { extensionMap.put(exts[i], m); } } public synchronized MimeEntry remove(String type) { MimeEntry entry = (MimeEntry)entries.get(type); return remove(entry); } public synchronized MimeEntry remove(MimeEntry entry) { String[] extensionKeys = entry.getExtensions(); if (extensionKeys != null) { for (int i = 0; i < extensionKeys.length; i++) { extensionMap.remove(extensionKeys[i]); } } return (MimeEntry)entries.remove(entry.getType()); } public synchronized MimeEntry find(String type) { MimeEntry entry = (MimeEntry)entries.get(type); if (entry == null) { // try a wildcard lookup Enumeration e = entries.elements(); while (e.hasMoreElements()) { MimeEntry wild = (MimeEntry)e.nextElement(); if (wild.matches(type)) { return wild; } } } return entry; } /** * Locate a MimeEntry by the file extension that has been associated * with it. Parses general file names, and URLs. */ public MimeEntry findByFileName(String fname) { String ext = ""; int i = fname.lastIndexOf('#'); if (i > 0) { fname = fname.substring(0, i - 1); } i = fname.lastIndexOf('.'); // REMIND: OS specific delimters appear here i = Math.max(i, fname.lastIndexOf('/')); i = Math.max(i, fname.lastIndexOf('?')); if (i != -1 && fname.charAt(i) == '.') { ext = fname.substring(i).toLowerCase(); } return findByExt(ext); } /** * Locate a MimeEntry by the file extension that has been associated * with it. */ public synchronized MimeEntry findByExt(String fileExtension) { return (MimeEntry)extensionMap.get(fileExtension); } public synchronized MimeEntry findByDescription(String description) { Enumeration e = elements(); while (e.hasMoreElements()) { MimeEntry entry = (MimeEntry)e.nextElement(); if (description.equals(entry.getDescription())) { return entry; } } // We failed, now try treating description as type return find(description); } String getTempFileTemplate() { return tempFileTemplate; } public synchronized Enumeration elements() { return entries.elements(); } // For backward compatibility -- mailcap format files // This is not currently used, but may in the future when we add ability // to read BOTH the properties format and the mailcap format. protected static String[] mailcapLocations = { System.getProperty("user.mailcap"), System.getProperty("user.home") + "/.mailcap", "/etc/mailcap", "/usr/etc/mailcap", "/usr/local/etc/mailcap", System.getProperty("hotjava.home", "/usr/local/hotjava") + "/lib/mailcap", }; public synchronized void load() { Properties entries = new Properties(); File file = null; try { InputStream is; // First try to load the user-specific table, if it exists String userTablePath = System.getProperty("content.types.user.table"); if (userTablePath != null) { file = new File(userTablePath); if (!file.exists()) { // No user-table, try to load the default built-in table. file = new File(System.getProperty("java.home") + File.separator + "lib" + File.separator + "content-types.properties"); } } else { // No user table, try to load the default built-in table. file = new File(System.getProperty("java.home") + File.separator + "lib" + File.separator + "content-types.properties"); } is = new BufferedInputStream(new FileInputStream(file)); entries.load(is); is.close(); } catch (IOException e) { // The default table file was not found? System.err.println("MimeTable.load: file = " + file.getPath() + ", " + e); e.printStackTrace(); // The table will be empty since this is called from the // constructor. return; } parse(entries); } void parse(Properties entries) { // first, strip out the platform-specific temp file template String tempFileTemplate = (String)entries.get("temp.file.template"); if (tempFileTemplate != null) { entries.remove("temp.file.template"); this.tempFileTemplate = tempFileTemplate; } // now, parse the mime-type spec's Enumeration types = entries.propertyNames(); while (types.hasMoreElements()) { String type = (String)types.nextElement(); String attrs = entries.getProperty(type); parse(type, attrs); } } // // Table format: // // <entry> ::= <table_tag> | <type_entry> // // <table_tag> ::= <table_format_version> | <temp_file_template> // // <type_entry> ::= <type_subtype_pair> '=' <type_attrs_list> // // <type_subtype_pair> ::= <type> '/' <subtype> // // <type_attrs_list> ::= <attr_value_pair> [ ';' <attr_value_pair> ]* // | [ <attr_value_pair> ]+ // // <attr_value_pair> ::= <attr_name> '=' <attr_value> // // <attr_name> ::= 'description' | 'action' | 'application' // | 'file_extensions' | 'icon' // // <attr_value> ::= <legal_char>* // // Embedded ';' in an <attr_value> are quoted with leading '\' . // // Interpretation of <attr_value> depends on the <attr_name> it is // associated with. // void parse(String type, String attrs) { MimeEntry newEntry = new MimeEntry(type); // REMIND handle embedded ';' and '|' and literal '"' StringTokenizer tokenizer = new StringTokenizer(attrs, ";"); while (tokenizer.hasMoreTokens()) { String pair = tokenizer.nextToken(); parse(pair, newEntry); } add(newEntry); } void parse(String pair, MimeEntry entry) { // REMIND add exception handling... String name = null; String value = null; boolean gotName = false; StringTokenizer tokenizer = new StringTokenizer(pair, "="); while (tokenizer.hasMoreTokens()) { if (gotName) { value = tokenizer.nextToken().trim(); } else { name = tokenizer.nextToken().trim(); gotName = true; } } fill(entry, name, value); } void fill(MimeEntry entry, String name, String value) { if ("description".equalsIgnoreCase(name)) { entry.setDescription(value); } else if ("action".equalsIgnoreCase(name)) { entry.setAction(getActionCode(value)); } else if ("application".equalsIgnoreCase(name)) { entry.setCommand(value); } else if ("icon".equalsIgnoreCase(name)) { entry.setImageFileName(value); } else if ("file_extensions".equalsIgnoreCase(name)) { entry.setExtensions(value); } // else illegal name exception } String[] getExtensions(String list) { StringTokenizer tokenizer = new StringTokenizer(list, ","); int n = tokenizer.countTokens(); String[] extensions = new String[n]; for (int i = 0; i < n; i++) { extensions[i] = tokenizer.nextToken(); } return extensions; } int getActionCode(String action) { for (int i = 0; i < MimeEntry.actionKeywords.length; i++) { if (action.equalsIgnoreCase(MimeEntry.actionKeywords[i])) { return i; } } return MimeEntry.UNKNOWN; } public synchronized boolean save(String filename) { if (filename == null) { filename = System.getProperty("user.home" + File.separator + "lib" + File.separator + "content-types.properties"); } return saveAsProperties(new File(filename)); } public Properties getAsProperties() { Properties properties = new Properties(); Enumeration e = elements(); while (e.hasMoreElements()) { MimeEntry entry = (MimeEntry)e.nextElement(); properties.put(entry.getType(), entry.toProperty()); } return properties; } protected boolean saveAsProperties(File file) { FileOutputStream os = null; try { os = new FileOutputStream(file); Properties properties = getAsProperties(); properties.put("temp.file.template", tempFileTemplate); String tag; String user = System.getProperty("user.name"); if (user != null) { tag = "; customized for " + user; properties.save(os, filePreamble + tag); } else { properties.save(os, filePreamble); } } catch (IOException e) { e.printStackTrace(); return false; } finally { if (os != null) { try { os.close(); } catch (IOException e) {} } } return true; } /* * Debugging utilities * public void list(PrintStream out) { Enumeration keys = entries.keys(); while (keys.hasMoreElements()) { String key = (String)keys.nextElement(); MimeEntry entry = (MimeEntry)entries.get(key); out.println(key + ": " + entry); } } public static void main(String[] args) { MimeTable testTable = MimeTable.getDefaultTable(); Enumeration e = testTable.elements(); while (e.hasMoreElements()) { MimeEntry entry = (MimeEntry)e.nextElement(); System.out.println(entry); } testTable.save(File.separator + "tmp" + File.separator + "mime_table.save"); } */}
/*
* @(#)MimeTable.java 1.12 97/04/08 James Gosling
*
* Copyright (c) 1994,1996 Sun Microsystems, Inc. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for NON-COMMERCIAL purposes and without fee is hereby
* granted provided that this copyright notice appears in all copies. Please
* refer to the file "copyright.html" for further important copyright and
* licensing information.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
* SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
* OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY
* LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR
* ITS DERIVATIVES.
*/
package sun.net.www;
import java.io.*;
import java.util.Calendar;
import java.util.Date;
import java.net.URL;
import java.net.FileNameMap;
import java.util.Hashtable;
import java.util.Enumeration;
import java.util.Properties;
import java.util.StringTokenizer;
public class MimeTable implements FileNameMap {
/** Keyed by content type, returns MimeEntries */
private Hashtable entries = new Hashtable();
/** Keyed by file extension (with the .), returns MimeEntries */
private Hashtable extensionMap = new Hashtable();
// Will be reset if in the platform-specific data file
private static String tempFileTemplate =
System.getProperty("content.types.temp.file.template", "/tmp/%s");
private static final String filePreamble = "sun.net.www MIME content-types table";
private static final String fileMagic = "#" + filePreamble;
private static MimeTable defaultInstance = null;
private MimeTable() {
load();
}
/**
* Get the single instance of this class. First use will load the
* table from a data file.
*/
public static MimeTable getDefaultTable() {
if (defaultInstance == null) {
defaultInstance = new MimeTable();
URLConnection.fileNameMap = defaultInstance;
}
return defaultInstance;
}
public synchronized int getSize() {
return entries.size();
}
public synchronized String getContentTypeFor(String fileName) {
MimeEntry entry = findByFileName(fileName);
if (entry != null) {
return entry.getType();
} else {
return null;
}
}
public synchronized void add(MimeEntry m) {
entries.put(m.getType(), m);
String exts[] = m.getExtensions();
if (exts == null) {
return;
}
for (int i = 0; i < exts.length; i++) {
extensionMap.put(exts[i], m);
}
}
public synchronized MimeEntry remove(String type) {
MimeEntry entry = (MimeEntry)entries.get(type);
return remove(entry);
}
public synchronized MimeEntry remove(MimeEntry entry) {
String[] extensionKeys = entry.getExtensions();
if (extensionKeys != null) {
for (int i = 0; i < extensionKeys.length; i++) {
extensionMap.remove(extensionKeys[i]);
}
}
return (MimeEntry)entries.remove(entry.getType());
}
public synchronized MimeEntry find(String type) {
MimeEntry entry = (MimeEntry)entries.get(type);
if (entry == null) {
// try a wildcard lookup
Enumeration e = entries.elements();
while (e.hasMoreElements()) {
MimeEntry wild = (MimeEntry)e.nextElement();
if (wild.matches(type)) {
return wild;
}
}
}
return entry;
}
/**
* Locate a MimeEntry by the file extension that has been associated
* with it. Parses general file names, and URLs.
*/
public MimeEntry findByFileName(String fname) {
String ext = "";
int i = fname.lastIndexOf('#');
if (i > 0) {
fname = fname.substring(0, i - 1);
}
i = fname.lastIndexOf('.');
// REMIND: OS specific delimters appear here
i = Math.max(i, fname.lastIndexOf('/'));
i = Math.max(i, fname.lastIndexOf('?'));
if (i != -1 && fname.charAt(i) == '.') {
ext = fname.substring(i).toLowerCase();
}
return findByExt(ext);
}
/**
* Locate a MimeEntry by the file extension that has been associated
* with it.
*/
public synchronized MimeEntry findByExt(String fileExtension) {
return (MimeEntry)extensionMap.get(fileExtension);
}
public synchronized MimeEntry findByDescription(String description) {
Enumeration e = elements();
while (e.hasMoreElements()) {
MimeEntry entry = (MimeEntry)e.nextElement();
if (description.equals(entry.getDescription())) {
return entry;
}
}
// We failed, now try treating description as type
return find(description);
}
String getTempFileTemplate() {
return tempFileTemplate;
}
public synchronized Enumeration elements() {
return entries.elements();
}
// For backward compatibility -- mailcap format files
// This is not currently used, but may in the future when we add ability
// to read BOTH the properties format and the mailcap format.
protected static String[] mailcapLocations = {
System.getProperty("user.mailcap"),
System.getProperty("user.home") + "/.mailcap",
"/etc/mailcap",
"/usr/etc/mailcap",
"/usr/local/etc/mailcap",
System.getProperty("hotjava.home",
"/usr/local/hotjava") + "/lib/mailcap",
};
public synchronized void load() {
Properties entries = new Properties();
File file = null;
try {
InputStream is;
// First try to load the user-specific table, if it exists
String userTablePath =
System.getProperty("content.types.user.table");
if (userTablePath != null) {
file = new File(userTablePath);
if (!file.exists()) {
// No user-table, try to load the default built-in table.
file = new File(System.getProperty("java.home") +
File.separator +
"lib" +
File.separator +
"content-types.properties");
}
}
else {
// No user table, try to load the default built-in table.
file = new File(System.getProperty("java.home") +
File.separator +
"lib" +
File.separator +
"content-types.properties");
}
is = new BufferedInputStream(new FileInputStream(file));
entries.load(is);
is.close();
}
catch (IOException e) {
// The default table file was not found?
System.err.println("MimeTable.load: file = " +
file.getPath() +
", " +
e);
e.printStackTrace();
// The table will be empty since this is called from the
// constructor.
return;
}
parse(entries);
}
void parse(Properties entries) {
// first, strip out the platform-specific temp file template
String tempFileTemplate = (String)entries.get("temp.file.template");
if (tempFileTemplate != null) {
entries.remove("temp.file.template");
this.tempFileTemplate = tempFileTemplate;
}
// now, parse the mime-type spec's
Enumeration types = entries.propertyNames();
while (types.hasMoreElements()) {
String type = (String)types.nextElement();
String attrs = entries.getProperty(type);
parse(type, attrs);
}
}
//
// Table format:
//
// <entry> ::= <table_tag> | <type_entry>
//
// <table_tag> ::= <table_format_version> | <temp_file_template>
//
// <type_entry> ::= <type_subtype_pair> '=' <type_attrs_list>
//
// <type_subtype_pair> ::= <type> '/' <subtype>
//
// <type_attrs_list> ::= <attr_value_pair> [ ';' <attr_value_pair> ]*
// | [ <attr_value_pair> ]+
//
// <attr_value_pair> ::= <attr_name> '=' <attr_value>
//
// <attr_name> ::= 'description' | 'action' | 'application'
// | 'file_extensions' | 'icon'
//
// <attr_value> ::= <legal_char>*
//
// Embedded ';' in an <attr_value> are quoted with leading '\' .
//
// Interpretation of <attr_value> depends on the <attr_name> it is
// associated with.
//
void parse(String type, String attrs) {
MimeEntry newEntry = new MimeEntry(type);
// REMIND handle embedded ';' and '|' and literal '"'
StringTokenizer tokenizer = new StringTokenizer(attrs, ";");
while (tokenizer.hasMoreTokens()) {
String pair = tokenizer.nextToken();
parse(pair, newEntry);
}
add(newEntry);
}
void parse(String pair, MimeEntry entry) {
// REMIND add exception handling...
String name = null;
String value = null;
boolean gotName = false;
StringTokenizer tokenizer = new StringTokenizer(pair, "=");
while (tokenizer.hasMoreTokens()) {
if (gotName) {
value = tokenizer.nextToken().trim();
}
else {
name = tokenizer.nextToken().trim();
gotName = true;
}
}
fill(entry, name, value);
}
void fill(MimeEntry entry, String name, String value) {
if ("description".equalsIgnoreCase(name)) {
entry.setDescription(value);
}
else if ("action".equalsIgnoreCase(name)) {
entry.setAction(getActionCode(value));
}
else if ("application".equalsIgnoreCase(name)) {
entry.setCommand(value);
}
else if ("icon".equalsIgnoreCase(name)) {
entry.setImageFileName(value);
}
else if ("file_extensions".equalsIgnoreCase(name)) {
entry.setExtensions(value);
}
// else illegal name exception
}
String[] getExtensions(String list) {
StringTokenizer tokenizer = new StringTokenizer(list, ",");
int n = tokenizer.countTokens();
String[] extensions = new String[n];
for (int i = 0; i < n; i++) {
extensions[i] = tokenizer.nextToken();
}
return extensions;
}
int getActionCode(String action) {
for (int i = 0; i < MimeEntry.actionKeywords.length; i++) {
if (action.equalsIgnoreCase(MimeEntry.actionKeywords[i])) {
return i;
}
}
return MimeEntry.UNKNOWN;
}
public synchronized boolean save(String filename) {
if (filename == null) {
filename = System.getProperty("user.home" +
File.separator +
"lib" +
File.separator +
"content-types.properties");
}
return saveAsProperties(new File(filename));
}
public Properties getAsProperties() {
Properties properties = new Properties();
Enumeration e = elements();
while (e.hasMoreElements()) {
MimeEntry entry = (MimeEntry)e.nextElement();
properties.put(entry.getType(), entry.toProperty());
}
return properties;
}
protected boolean saveAsProperties(File file) {
FileOutputStream os = null;
try {
os = new FileOutputStream(file);
Properties properties = getAsProperties();
properties.put("temp.file.template", tempFileTemplate);
String tag;
String user = System.getProperty("user.name");
if (user != null) {
tag = "; customized for " + user;
properties.save(os, filePreamble + tag);
}
else {
properties.save(os, filePreamble);
}
}
catch (IOException e) {
e.printStackTrace();
return false;
}
finally {
if (os != null) {
try { os.close(); } catch (IOException e) {}
}
}
return true;
}
/*
* Debugging utilities
*
public void list(PrintStream out) {
Enumeration keys = entries.keys();
while (keys.hasMoreElements()) {
String key = (String)keys.nextElement();
MimeEntry entry = (MimeEntry)entries.get(key);
out.println(key + ": " + entry);
}
}
public static void main(String[] args) {
MimeTable testTable = MimeTable.getDefaultTable();
Enumeration e = testTable.elements();
while (e.hasMoreElements()) {
MimeEntry entry = (MimeEntry)e.nextElement();
System.out.println(entry);
}
testTable.save(File.separator + "tmp" +
File.separator + "mime_table.save");
}
*/
}