| /* |
| * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.tools.internal.xjc.util; |
| |
| import java.text.ParseException; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import javax.activation.MimeType; |
| import javax.activation.MimeTypeParseException; |
| |
| /** |
| * @author Kohsuke Kawaguchi |
| */ |
| public class MimeTypeRange { |
| public final String majorType; |
| public final String subType; |
| |
| public final Map<String,String> parameters = new HashMap<String, String>(); |
| |
| /** |
| * Each media-range MAY be followed by one or more accept-params, |
| * beginning with the "q" parameter for indicating a relative quality |
| * factor. The first "q" parameter (if any) separates the media-range |
| * parameter(s) from the accept-params. Quality factors allow the user |
| * or user agent to indicate the relative degree of preference for that |
| * media-range, using the qvalue scale from 0 to 1 (section 3.9). The |
| * default value is q=1. |
| */ |
| public final float q; |
| |
| // accept-extension is not implemented |
| |
| public static List<MimeTypeRange> parseRanges(String s) throws ParseException { |
| StringCutter cutter = new StringCutter(s,true); |
| List<MimeTypeRange> r = new ArrayList<MimeTypeRange>(); |
| while(cutter.length()>0) { |
| r.add(new MimeTypeRange(cutter)); |
| } |
| return r; |
| } |
| |
| public MimeTypeRange(String s) throws ParseException { |
| this(new StringCutter(s,true)); |
| } |
| |
| /** |
| * Used only to produce the static constants within this class. |
| */ |
| private static MimeTypeRange create(String s) { |
| try { |
| return new MimeTypeRange(s); |
| } catch (ParseException e) { |
| // we only use this method for known inputs |
| throw new Error(e); |
| } |
| } |
| |
| /** |
| * @param cutter |
| * A string like "text/html; charset=utf-8; |
| */ |
| private MimeTypeRange(StringCutter cutter) throws ParseException { |
| majorType = cutter.until("/"); |
| cutter.next("/"); |
| subType = cutter.until("[;,]"); |
| |
| float q = 1.0f; |
| |
| while(cutter.length()>0) { |
| String sep = cutter.next("[;,]"); |
| if(sep.equals(",")) |
| break; |
| |
| String key = cutter.until("="); |
| cutter.next("="); |
| String value; |
| char ch = cutter.peek(); |
| if(ch=='"') { |
| // quoted |
| cutter.next("\""); |
| value = cutter.until("\""); |
| cutter.next("\""); |
| } else { |
| value = cutter.until("[;,]"); |
| } |
| |
| if(key.equals("q")) { |
| q = Float.parseFloat(value); |
| } else { |
| parameters.put(key,value); |
| } |
| } |
| |
| this.q = q; |
| } |
| |
| public MimeType toMimeType() throws MimeTypeParseException { |
| // due to the additional error check done in the MimeType class, |
| // an error at this point is possible |
| return new MimeType(toString()); |
| } |
| |
| public String toString() { |
| StringBuilder sb = new StringBuilder(majorType+'/'+subType); |
| if(q!=1) |
| sb.append("; q=").append(q); |
| |
| for( Map.Entry<String,String> p : parameters.entrySet() ) { |
| // I'm too lazy to quote the value |
| sb.append("; ").append(p.getKey()).append('=').append(p.getValue()); |
| } |
| return sb.toString(); |
| } |
| |
| public static final MimeTypeRange ALL = create("*/*"); |
| |
| /** |
| * Creates a range by merging all the given types. |
| */ |
| public static MimeTypeRange merge( Collection<MimeTypeRange> types ) { |
| if(types.size()==0) throw new IllegalArgumentException(); |
| if(types.size()==1) return types.iterator().next(); |
| |
| String majorType=null; |
| for (MimeTypeRange mt : types) { |
| if(majorType==null) majorType = mt.majorType; |
| if(!majorType.equals(mt.majorType)) |
| return ALL; |
| } |
| |
| return create(majorType+"/*"); |
| } |
| |
| public static void main(String[] args) throws ParseException { |
| for( MimeTypeRange m : parseRanges(args[0])) |
| System.out.println(m.toString()); |
| } |
| } |