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Jetty example source code file (HttpURI.java)

This example Jetty source code file (HttpURI.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Jetty tags/keywords

auth, auth=4, auth=4, httpuri, httpuri, illegalargumentexception, io, query, query=8, scheme_or_path, scheme_or_path, scheme_or_path=2, start, string, string

The Jetty HttpURI.java source code

//========================================================================
//Copyright 2006 Mort Bay Consulting Pty. Ltd.
//------------------------------------------------------------------------
//Licensed under the Apache License, Version 2.0 (the "License");
//you may not use this file except in compliance with the License.
//You may obtain a copy of the License at 
//http://www.apache.org/licenses/LICENSE-2.0
//Unless required by applicable law or agreed to in writing, software
//distributed under the License is distributed on an "AS IS" BASIS,
//WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//See the License for the specific language governing permissions and
//limitations under the License.
//========================================================================

package org.mortbay.jetty;

import java.io.UnsupportedEncodingException;

import org.mortbay.util.MultiMap;
import org.mortbay.util.StringUtil;
import org.mortbay.util.TypeUtil;
import org.mortbay.util.URIUtil;
import org.mortbay.util.UrlEncoded;


/* ------------------------------------------------------------ */
/** Http URI.
 * Parse a HTTP URI from a string or byte array.  Given a URI
 * <code>http://user@host:port/path/info;param?query#fragment
 * this class will split it into the following undecoded optional elements:<ul>
 * <li>{@link #getScheme()} - http:
 * <li>{@link #getAuthority()} - //name@host:port
 * <li>{@link #getHost()} - host
 * <li>{@link #getPort()} - port
 * <li>{@link #getPath()} - /path/info
 * <li>{@link #getParam()} - param
 * <li>{@link #getQuery()} - query
 * <li>{@link #getFragment()} - fragment
 * </ul>
 * 
 */
public class HttpURI
{
    private static byte[] __empty={}; 
    private final static int 
    START=0,
    AUTH_OR_PATH=1,
    SCHEME_OR_PATH=2,
    AUTH=4,
    PORT=5,
    PATH=6,
    PARAM=7,
    QUERY=8;
    
    boolean _partial=false;
    byte[] _raw=__empty;
    String _rawString;
    int _scheme;
    int _authority;
    int _host;
    int _port;
    int _path;
    int _param;
    int _query;
    int _fragment;
    int _end;
    
    public HttpURI()
    {
        
    } 
    
    /* ------------------------------------------------------------ */
    /**
     * @param parsePartialAuth If True, parse auth without prior scheme, else treat all URIs starting with / as paths
     */
    public HttpURI(boolean parsePartialAuth)
    {
        _partial=parsePartialAuth;
    }
    
    public HttpURI(String raw)
    {
        _rawString=raw;
        byte[] b = raw.getBytes();
        parse(b,0,b.length);
    }
    
    public HttpURI(byte[] raw,int offset, int length)
    {
        parse2(raw,offset,length);
    }
    
    public void parse(String raw)
    {
        byte[] b = raw.getBytes();
        parse2(b,0,b.length);
        _rawString=raw;
    }
    
    public void parse(byte[] raw,int offset, int length)
    {
        _rawString=null;
        parse2(raw,offset,length);
    }
    
    private void parse2(byte[] raw,int offset, int length)
    {
        _raw=raw;
        int i=offset;
        int e=offset+length;
        int state=START;
        int m=offset;
        _end=offset+length;
        _scheme=offset;
        _authority=offset;
        _host=offset;
        _port=offset;
        _path=offset;
        _param=_end;
        _query=_end;
        _fragment=_end;
        while (i<e)
        {
            char c=(char)(0xff&_raw[i]);
            int s=i++;
            
            switch (state)
            {
                case START:
                {
                    m=s;
                    if (c=='/')
                    {
                        state=AUTH_OR_PATH;
                    }
                    else if (Character.isLetterOrDigit(c))
                    {
                        state=SCHEME_OR_PATH;
                    }
                    else if (c==';')
                    {
                        _param=s;
                        state=PARAM;
                    }
                    else if (c=='?')
                    {
                        _param=s;
                        _query=s;
                        state=QUERY;
                    }
                    else if (c=='#')
                    {
                        _param=s;
                        _query=s;
                        _fragment=s;
                        break;
                    }
                    else
                        throw new IllegalArgumentException(new String(_raw,offset,length));
                    
                    continue;
                }

                case AUTH_OR_PATH:
                {
                    if ((_partial||_scheme!=_authority) && c=='/')
                    {
                        _host=i;
                        _port=_end;
                        _path=_end;
                        state=AUTH;
                    }
                    else if (c==';' || c=='?' || c=='#')
                    {
                        i--;
                        state=PATH;
                    }  
                    else
                    {
                        _host=m;
                        _port=m;
                        state=PATH;
                    }  
                    continue;
                }
                
                case SCHEME_OR_PATH:
                {
                    // short cut for http and https
                    if (length>6 && c=='t')
                    {
                        if (_raw[offset+3]==':')
                        {
                            s=offset+3;
                            i=offset+4;
                            c=':';
                        }
                        else if (_raw[offset+4]==':')
                        {
                            s=offset+4;
                            i=offset+5;
                            c=':';
                        }
                        else if (_raw[offset+5]==':')
                        {
                            s=offset+5;
                            i=offset+6;
                            c=':';
                        }
                    }
                    
                    
                    if (c==':')
                    {
                        m=i++;
                        _authority=m;
                        _path=m;
                        c=(char)(0xff&_raw[i]);
                        if (c=='/')
                            state=AUTH_OR_PATH;
                        else 
                        {
                            _host=m;
                            _port=m;
                            state=PATH;
                        }
                    }
                    else if (c=='/')
                    {
                        state=PATH;
                    }
                    else if (c==';')
                    {
                        _param=s;
                        state=PARAM;
                    }
                    else if (c=='?')
                    {
                        _param=s;
                        _query=s;
                        state=QUERY;
                    }
                    else if (c=='#')
                    {
                        _param=s;
                        _query=s;
                        _fragment=s;
                        break;
                    }
                    continue;
                }
                
                case AUTH:
                {
                    if (c=='/')
                    {
                        m=s;
                        _path=m;
                        _port=_path;
                        state=PATH;
                    }
                    else if (c=='@')
                    {
                        _host=i;
                    }
                    else if (c==':')
                    {
                        _port=s;
                        state=PORT;
                    }
                    continue;
                }
                
                case PORT:
                {
                    if (c=='/')
                    {
                        m=s;
                        _path=m;
                        if (_port<=_authority)
                            _port=_path;
                        state=PATH;
                    }
                    continue;
                }
                
                case PATH:
                {
                    if (c==';')
                    {
                        _param=s;
                        state=PARAM;
                    }
                    else if (c=='?')
                    {
                        _param=s;
                        _query=s;
                        state=QUERY;
                    }
                    else if (c=='#')
                    {
                        _param=s;
                        _query=s;
                        _fragment=s;
                        break;
                    }
                    continue;
                }
                
                case PARAM:
                {
                    if (c=='?')
                    {
                        _query=s;
                        state=QUERY;
                    }
                    else if (c=='#')
                    {
                        _query=s;
                        _fragment=s;
                        break;
                    }
                    continue;
                }
                
                case QUERY:
                {
                    if (c=='#')
                    {
                        _fragment=s;
                        break;
                    }
                    continue;
                }
                
            }
        }
    }
    
    
    public String getScheme()
    {
        if (_scheme==_authority)
            return null;
        int l=_authority-_scheme;
        if (l==5 && 
            _raw[_scheme]=='h' && 
            _raw[_scheme+1]=='t' && 
            _raw[_scheme+2]=='t' && 
            _raw[_scheme+3]=='p' )
            return HttpSchemes.HTTP;
        if (l==6 && 
            _raw[_scheme]=='h' && 
            _raw[_scheme+1]=='t' && 
            _raw[_scheme+2]=='t' && 
            _raw[_scheme+3]=='p' && 
            _raw[_scheme+4]=='s' )
            return HttpSchemes.HTTPS;
        return new String(_raw,_scheme,_authority-_scheme-1);
    }
    
    public String getAuthority()
    {
        if (_authority==_path)
            return null;
        return new String(_raw,_authority,_path-_authority);
    }
    
    public String getHost()
    {
        if (_host==_port)
            return null;
        return new String(_raw,_host,_port-_host);
    }
    
    public int getPort()
    {
        if (_port==_path)
            return -1;
        return TypeUtil.parseInt(_raw, _port+1, _path-_port-1,10);
    }
    
    public String getPath()
    {
        if (_path==_param)
            return null;
        return StringUtil.toString(_raw,_path,_param-_path,URIUtil.__CHARSET);
    }
    
    public String getDecodedPath()
    {
        if (_path==_param)
            return null;
        return URIUtil.decodePath(_raw,_path,_param-_path);
    }
    
    public String getPathAndParam()
    {
        if (_path==_query)
            return null;
        return StringUtil.toString(_raw,_path,_query-_path,URIUtil.__CHARSET);
    }
    
    public String getCompletePath()
    {
        if (_path==_end)
            return null;
        return StringUtil.toString(_raw,_path,_end-_path,URIUtil.__CHARSET);
    }
    
    public String getParam()
    {
        if (_param==_query)
            return null;
        return StringUtil.toString(_raw,_param+1,_query-_param-1,URIUtil.__CHARSET);
    }
    
    public String getQuery()
    {
        if (_query==_fragment)
            return null;
        return StringUtil.toString(_raw,_query+1,_fragment-_query-1,URIUtil.__CHARSET);
    }
    
    public String getQuery(String encoding)
    {
        if (_query==_fragment)
            return null;
        return StringUtil.toString(_raw,_query+1,_fragment-_query-1,encoding==null?URIUtil.__CHARSET:encoding);
    }
    
    public String getFragment()
    {
        if (_fragment==_end)
            return null;
        return new String(_raw,_fragment+1,_end-_fragment-1);
    }

    public void decodeQueryTo(MultiMap parameters, String encoding) 
        throws UnsupportedEncodingException
    {
        if (_query==_fragment)
            return;
       
        if (encoding==null)
            encoding=URIUtil.__CHARSET;
        
        if (StringUtil.isUTF8(encoding))
            UrlEncoded.decodeUtf8To(_raw,_query+1,_fragment-_query-1,parameters);
        else
            UrlEncoded.decodeTo(StringUtil.toString(_raw,_query+1,_fragment-_query-1,encoding),parameters,encoding);
    }

    public void clear()
    {
        _scheme=_authority=_host=_port=_path=_param=_query=_fragment=_end=0;
        _raw=__empty;
        _rawString="";
    }
    
    public String toString()
    {
        if (_rawString==null)
            _rawString=new String(_raw,_scheme,_end-_scheme);
        return _rawString;
    }
    
}

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