1package com.google.polo.json;
2
3/*
4Copyright (c) 2002 JSON.org
5
6Permission is hereby granted, free of charge, to any person obtaining a copy
7of this software and associated documentation files (the "Software"), to deal
8in the Software without restriction, including without limitation the rights
9to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10copies of the Software, and to permit persons to whom the Software is
11furnished to do so, subject to the following conditions:
12
13The above copyright notice and this permission notice shall be included in all
14copies or substantial portions of the Software.
15
16The Software shall be used for Good, not Evil.
17
18THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24SOFTWARE.
25*/
26
27/**
28 * The HTTPTokener extends the JSONTokener to provide additional methods
29 * for the parsing of HTTP headers.
30 * @author JSON.org
31 * @version 2008-09-18
32 */
33public class HTTPTokener extends JSONTokener {
34
35    /**
36     * Construct an HTTPTokener from a string.
37     * @param s A source string.
38     */
39    public HTTPTokener(String s) {
40        super(s);
41    }
42
43
44    /**
45     * Get the next token or string. This is used in parsing HTTP headers.
46     * @throws JSONException
47     * @return A String.
48     */
49    public String nextToken() throws JSONException {
50        char c;
51        char q;
52        StringBuffer sb = new StringBuffer();
53        do {
54            c = next();
55        } while (Character.isWhitespace(c));
56        if (c == '"' || c == '\'') {
57            q = c;
58            for (;;) {
59                c = next();
60                if (c < ' ') {
61                    throw syntaxError("Unterminated string.");
62                }
63                if (c == q) {
64                    return sb.toString();
65                }
66                sb.append(c);
67            }
68        }
69        for (;;) {
70            if (c == 0 || Character.isWhitespace(c)) {
71                return sb.toString();
72            }
73            sb.append(c);
74            c = next();
75        }
76    }
77}
78