/
MediaTypeHeaderDelegate.java
186 lines (170 loc) · 5.58 KB
/
MediaTypeHeaderDelegate.java
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package org.jboss.resteasy.plugins.delegates;
import org.jboss.resteasy.resteasy_jaxrs.i18n.Messages;
import org.jboss.resteasy.util.HeaderParameterParser;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.ext.RuntimeDelegate;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
* @version $Revision: 1 $
*/
public class MediaTypeHeaderDelegate implements RuntimeDelegate.HeaderDelegate<MediaType>
{
public static final MediaTypeHeaderDelegate INSTANCE = new MediaTypeHeaderDelegate();
private static Map<String, MediaType> map = new ConcurrentHashMap<String, MediaType>();
private static Map<MediaType, String> reverseMap = new ConcurrentHashMap<MediaType, String>();
private static final int MAX_MT_CACHE_SIZE = System.getSecurityManager() == null
? Integer.getInteger("org.jboss.resteasy.max_mediatype_cache_size", 200)
: AccessController.doPrivileged((PrivilegedAction<Integer>) () ->
Integer.getInteger("org.jboss.resteasy.max_mediatype_cache_size", 200));
public MediaType fromString(String type) throws IllegalArgumentException
{
if (type == null) throw new IllegalArgumentException(Messages.MESSAGES.mediaTypeValueNull());
return parse(type);
}
protected static boolean isValid(String str)
{
if (str == null || str.length() == 0) return false;
for (int i = 0; i < str.length(); i++) {
switch (str.charAt(i))
{
case '/':
case '\\':
case '?':
case ':':
case '<':
case '>':
case ';':
case '(':
case ')':
case '@':
case ',':
case '[':
case ']':
case '=':
case '\n':
return false;
default:
break;
}
}
return true;
}
public static MediaType parse(String type)
{
MediaType result = map.get(type);
if (result == null) {
result = internalParse(type);
final int size = map.size();
if (size >= MAX_MT_CACHE_SIZE) {
map.clear();
reverseMap.clear();
}
map.put(type, result);
reverseMap.put(result, type);
}
return result;
}
private static MediaType internalParse(String type)
{
int typeIndex = type.indexOf('/');
int paramIndex = type.indexOf(';');
String major = null;
String subtype = null;
if (typeIndex < 0) // possible "*"
{
major = type;
if (paramIndex > -1)
{
major = major.substring(0, paramIndex);
}
if (!MediaType.MEDIA_TYPE_WILDCARD.equals(major))
{
throw new IllegalArgumentException(Messages.MESSAGES.failureParsingMediaType(type));
}
subtype = MediaType.MEDIA_TYPE_WILDCARD;
}
else
{
major = type.substring(0, typeIndex);
if (paramIndex > -1)
{
subtype = type.substring(typeIndex + 1, paramIndex);
}
else
{
subtype = type.substring(typeIndex + 1);
}
}
if (major.length() < 1 || subtype.length() < 1)
{
throw new IllegalArgumentException(Messages.MESSAGES.failureParsingMediaType(type));
}
if (!isValid(major) || !isValid(subtype))
{
throw new IllegalArgumentException(Messages.MESSAGES.failureParsingMediaType(type));
}
String params = null;
if (paramIndex > -1) params = type.substring(paramIndex + 1);
if (params != null && !params.equals(""))
{
HashMap<String, String> typeParams = new HashMap<String, String>();
int start = 0;
while (start < params.length())
{
start = HeaderParameterParser.setParam(typeParams, params, start);
}
return new MediaType(major, subtype, typeParams);
}
else
{
return new MediaType(major, subtype);
}
}
private static final char[] quotedChars = "()<>@,;:\\\"/[]?= \t\r\n".toCharArray();
public static boolean quoted(String str)
{
for (int i = 0; i < str.length(); i++)
{
char c = str.charAt(i);
for (char q : quotedChars) {
if (c == q) return true;
}
}
return false;
}
public String toString(MediaType type)
{
if (type == null) throw new IllegalArgumentException(Messages.MESSAGES.paramNull());
String result = reverseMap.get(type);
if (result == null) {
result = internalToString(type);
final int size = reverseMap.size();
if (size >= MAX_MT_CACHE_SIZE) {
reverseMap.clear();
map.clear();
}
reverseMap.put(type, result);
map.put(result, type);
}
return result;
}
private String internalToString(MediaType type)
{
StringBuilder buf = new StringBuilder();
buf.append(type.getType().toLowerCase()).append("/").append(type.getSubtype().toLowerCase());
if (type.getParameters() == null || type.getParameters().size() == 0) return buf.toString();
for (String name : type.getParameters().keySet())
{
buf.append(';').append(name).append('=');
String val = type.getParameters().get(name);
if (quoted(val)) buf.append('"').append(val).append('"');
else buf.append(val);
}
return buf.toString();
}
}