source: contrib/MailArchiver/sources/vendor/mime4j/custom/dom/src/main/javacc/org/apache/james/mime4j/field/contenttype/ContentTypeParser.jj @ 6785

/****************************************************************
 * Licensed to the Apache Software Foundation (ASF) under one   *
 * or more contributor license agreements.  See the NOTICE file *
 * distributed with this work for additional information        *
 * regarding copyright ownership.  The ASF licenses this file   *
 * to you 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.                                           *
 ****************************************************************/


/**
 * RFC2045 Content-Type parser.
 *
 * Created 10/2/2004
 * by Joe Cheng <code@joecheng.com>
 */

options {
        STATIC=false;
        LOOKAHEAD=1;
        JDK_VERSION = "1.5";
        OUTPUT_DIRECTORY = "../../../../../../../../../target/generated-sources/javacc";
        //DEBUG_PARSER=true;
        //DEBUG_TOKEN_MANAGER=true;
}

PARSER_BEGIN(ContentTypeParser)
/****************************************************************
 * Licensed to the Apache Software Foundation (ASF) under one   *
 * or more contributor license agreements.  See the NOTICE file *
 * distributed with this work for additional information        *
 * regarding copyright ownership.  The ASF licenses this file   *
 * to you 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.apache.james.mime4j.field.contenttype.parser;

import java.util.List;
import java.util.ArrayList;

public class ContentTypeParser {

        private String type;
        private String subtype;
        private List<String> paramNames = new ArrayList<String>();
        private List<String> paramValues = new ArrayList<String>();

        public String getType() { return type; }
        public String getSubType() { return subtype; }
        public List<String> getParamNames() { return paramNames; }
        public List<String> getParamValues() { return paramValues; }

    public static void main(String args[]) throws ParseException {
        while (true) {
            try {
                ContentTypeParser parser = new ContentTypeParser(System.in);
                parser.parseLine();
            } catch (Exception x) {
                x.printStackTrace();
                return;
            }
        }
    }
}

PARSER_END(ContentTypeParser)

void parseLine() :
{}
{
        parse() ["\r"] "\n"
}

void parseAll() :
{}
{
        parse() <EOF>
}

void parse() :
{
        Token type;
        Token subtype;
}
{
        type=<ATOKEN> "/" subtype=<ATOKEN>
        {
                this.type = type.image;
                this.subtype = subtype.image;
        }
        ( ";" parameter() )*
}

void parameter() :
{
        Token attrib;
        String val;
}
{
        attrib=<ATOKEN> "=" val=value()
        {
                paramNames.add(attrib.image);
                paramValues.add(val);
        }
}

String value() :
{Token t;}
{
(       t=<ATOKEN>
|   t=<DIGITS>
|       t=<QUOTEDSTRING>
)
        { return t.image; }
}



SPECIAL_TOKEN :
{
        < WS: ( [" ", "\t"] )+ >
}

TOKEN_MGR_DECLS :
{
        // Keeps track of how many levels of comment nesting
        // we've encountered.  This is only used when the 2nd
        // level is reached, for example ((this)), not (this).
        // This is because the outermost level must be treated
        // specially anyway, because the outermost ")" has a
        // different token type than inner ")" instances.
        static int commentNest;
}

MORE :
{
        // starts a comment
        "(" : INCOMMENT
}

<INCOMMENT>
SKIP :
{
        // ends a comment
        < COMMENT: ")" > : DEFAULT
        // if this is ever changed to not be a SKIP, need
        // to make sure matchedToken.token = token.toString()
        // is called.
}

<INCOMMENT>
MORE :
{
        < <QUOTEDPAIR>> { image.deleteCharAt(image.length() - 2); }
|       "(" { commentNest = 1; } : NESTED_COMMENT
|       < <ANY>>
}

<NESTED_COMMENT>
MORE :
{
        < <QUOTEDPAIR>> { image.deleteCharAt(image.length() - 2); }
|       "(" { ++commentNest; }
|       ")" { --commentNest; if (commentNest == 0) SwitchTo(INCOMMENT); }
|       < <ANY>>
}



// QUOTED STRINGS

MORE :
{
        "\"" { image.deleteCharAt(image.length() - 1); } : INQUOTEDSTRING
}

<INQUOTEDSTRING>
MORE :
{
        < <QUOTEDPAIR>> { image.deleteCharAt(image.length() - 2); }
|       < (~["\"", "\\"])+ >
}

<INQUOTEDSTRING>
TOKEN :
{
        < QUOTEDSTRING: "\"" > { matchedToken.image = image.substring(0, image.length() - 1); } : DEFAULT
}


TOKEN :
{
        < DIGITS: ( ["0"-"9"] )+ >
}

TOKEN :
{
        < ATOKEN: ( ~[" ", "\t", "(", ")", "<", ">", "@", ",", ";", ":", "\\", "\"", "/", "[", "]", "?", "="] )+ >
}


// GLOBALS

<*>
TOKEN :
{
        < #QUOTEDPAIR: "\\" <ANY> >
|       < #ANY: ~[] >
}