| /* MimeType.java -- A MIME type as defined in RFC2046 and RFC2047. |
| Copyright (C) 2004 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package javax.activation; |
| |
| import gnu.java.lang.CPStringBuilder; |
| |
| import java.io.Externalizable; |
| import java.io.IOException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| |
| /** |
| * A MIME content type, as defined in RFCs 2045 and 2046. |
| * |
| * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> |
| * @version 1.1 |
| */ |
| public class MimeType |
| implements Externalizable |
| { |
| |
| static final String TSPECIALS = "()<>@,;:/[]?=\\\""; |
| |
| private String primaryType; |
| private String subType; |
| private MimeTypeParameterList parameters; |
| |
| /** |
| * Constructor for an <code>application/*</code> content type. |
| */ |
| public MimeType() |
| { |
| primaryType = "application"; |
| subType = "*"; |
| parameters = new MimeTypeParameterList(); |
| } |
| |
| /** |
| * Constructor that parses a raw String. |
| * @param rawdata the MIME type string |
| */ |
| public MimeType(String rawdata) |
| throws MimeTypeParseException |
| { |
| parse(rawdata); |
| } |
| |
| /** |
| * Constructor for a new MIME type with the given primary and sub types |
| * and an empty parameter list. |
| * @param primary the primary type |
| * @param sub the subtype |
| */ |
| public MimeType(String primary, String sub) |
| throws MimeTypeParseException |
| { |
| checkValidity(primary, "Primary type is invalid"); |
| checkValidity(sub, "Sub type is invalid"); |
| primaryType = primary.toLowerCase(); |
| subType = sub.toLowerCase(); |
| parameters = new MimeTypeParameterList(); |
| } |
| |
| /** |
| * Returns the primary type. |
| */ |
| public String getPrimaryType() |
| { |
| return primaryType; |
| } |
| |
| /** |
| * Sets the primary type. |
| * @param primary the new primary type |
| */ |
| public void setPrimaryType(String primary) |
| throws MimeTypeParseException |
| { |
| checkValidity(primary, "Primary type is invalid"); |
| primaryType = primary.toLowerCase(); |
| } |
| |
| /** |
| * Returns the subtype. |
| */ |
| public String getSubType() |
| { |
| return subType; |
| } |
| |
| /** |
| * Sets the subtype. |
| * @param sub the new subtype |
| */ |
| public void setSubType(String sub) |
| throws MimeTypeParseException |
| { |
| checkValidity(sub, "Sub type is invalid"); |
| subType = sub.toLowerCase(); |
| } |
| |
| /** |
| * Returns the MIME parameters. |
| */ |
| public MimeTypeParameterList getParameters() |
| { |
| return parameters; |
| } |
| |
| /** |
| * Returns the parameter value for the specified name. |
| * @param name the parameter name |
| */ |
| public String getParameter(String name) |
| { |
| return parameters.get(name); |
| } |
| |
| /** |
| * Sets the parameter value for the specified name. |
| * @param name the parameter name |
| * @param value the new value |
| */ |
| public void setParameter(String name, String value) |
| { |
| parameters.set(name, value); |
| } |
| |
| /** |
| * Removes the parameter value for the specified name. |
| * @param name the parameter name |
| */ |
| public void removeParameter(String name) |
| { |
| parameters.remove(name); |
| } |
| |
| /** |
| * Returns the complete string representation of this MIME type. |
| */ |
| public String toString() |
| { |
| return new CPStringBuilder(primaryType) |
| .append('/') |
| .append(subType) |
| .append(parameters.toString()) |
| .toString(); |
| } |
| |
| /** |
| * Returns the string representation of this MIME type without |
| * parameters. |
| */ |
| public String getBaseType() |
| { |
| return new CPStringBuilder(primaryType) |
| .append('/') |
| .append(subType) |
| .toString(); |
| } |
| |
| /** |
| * Returns true if the primary and subtype of this MIME type are the |
| * same as in the given MIME type. |
| */ |
| public boolean match(MimeType type) |
| { |
| String primary2 = type.getPrimaryType(); |
| String sub2 = type.getSubType(); |
| return primaryType.equals(primary2) && (subType.equals(sub2) || |
| "*".equals(subType) || |
| "*".equals(sub2)); |
| } |
| |
| /** |
| * Returns true if the primary and subtype of this MIME type are the |
| * same as in the given MIME type string. |
| */ |
| public boolean match(String rawdata) |
| throws MimeTypeParseException |
| { |
| return match(new MimeType(rawdata)); |
| } |
| |
| public void writeExternal(ObjectOutput out) |
| throws IOException |
| { |
| out.writeUTF(toString()); |
| out.flush(); |
| } |
| |
| public void readExternal(ObjectInput in) |
| throws IOException, ClassNotFoundException |
| { |
| try |
| { |
| parse(in.readUTF()); |
| } |
| catch (MimeTypeParseException e) |
| { |
| throw new IOException(e.getMessage()); |
| } |
| } |
| |
| private void parse(String rawdata) |
| throws MimeTypeParseException |
| { |
| int si = rawdata.indexOf('/'); |
| int pi = rawdata.indexOf(';'); |
| if (si == -1) |
| { |
| throw new MimeTypeParseException("Unable to find a sub type."); |
| } |
| if (pi == -1) |
| { |
| primaryType = rawdata.substring(0, si).toLowerCase().trim(); |
| subType = rawdata.substring(si + 1).toLowerCase().trim(); |
| parameters = new MimeTypeParameterList(); |
| } |
| else if (si < pi) |
| { |
| primaryType = rawdata.substring(0, si).toLowerCase().trim(); |
| subType = rawdata.substring(si + 1, pi).toLowerCase().trim(); |
| parameters = new MimeTypeParameterList(rawdata.substring(pi)); |
| } |
| else |
| { |
| throw new MimeTypeParseException("Unable to find a sub type."); |
| } |
| checkValidity(primaryType, "Primary type is invalid"); |
| checkValidity(subType, "Sub type is invalid"); |
| } |
| |
| static void checkValidity(String token, String message) |
| throws MimeTypeParseException |
| { |
| int len = token.length(); |
| if (len == 0) |
| { |
| throw new MimeTypeParseException(message, token); |
| } |
| for (int i = 0; i < len; i++) |
| { |
| char c = token.charAt(i); |
| if (!isValidChar(c)) |
| { |
| throw new MimeTypeParseException(message, token); |
| } |
| } |
| } |
| |
| static boolean isValidChar(char c) |
| { |
| return c > ' ' && c <= '~' && TSPECIALS.indexOf(c) == -1; |
| } |
| |
| } |
| |