##### Coverage Report - org.melati.util.CSVStringEnumeration

Classes in this File | Line Coverage | Branch Coverage | Complexity
CSVStringEnumeration |
0% | 0/41
0% | 0/26
| 5.5;5.5

1 |  |
     /*
2 |  |
      * $Source: /usr/cvsroot/melati/melati/src/site/resources/withWebmacro/org.melati.util.CSVStringEnumeration.html,v $
3 |  |
      * $Revision: 1.1 $
4 |  |
      *
5 |  |
      * Copyright (C) 2001 William Chesters
6 |  |
      *
7 |  |
      * Part of Melati (http://melati.org), a framework for the rapid
8 |  |
      * development of clean, maintainable web applications.
9 |  |
      *
10 |  |
      * Melati is free software; Permission is granted to copy, distribute
11 |  |
      * and/or modify this software under the terms either:
12 |  |
      *
13 |  |
      * a) the GNU General Public License as published by the Free Software
14 |  |
      *    Foundation; either version 2 of the License, or (at your option)
15 |  |
      *    any later version,
16 |  |
      *
17 |  |
      *    or
18 |  |
      *
19 |  |
      * b) any version of the Melati Software License, as published
20 |  |
      *    at http://melati.org
21 |  |
      *
22 |  |
      * You should have received a copy of the GNU General Public License and
23 |  |
      * the Melati Software License along with this program;
24 |  |
      * if not, write to the Free Software Foundation, Inc.,
25 |  |
      * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the
26 |  |
      * GNU General Public License and visit http://melati.org to obtain the
27 |  |
      * Melati Software License.
28 |  |
      *
29 |  |
      * Feel free to contact the Developers of Melati (http://melati.org),
30 |  |
      * if you would like to work out a different arrangement than the options
31 |  |
      * outlined here.  It is our intention to allow Melati to be used by as
32 |  |
      * wide an audience as possible.
33 |  |
      *
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      * This program is distributed in the hope that it will be useful,
35 |  |
      * but WITHOUT ANY WARRANTY; without even the implied warranty of
36 |  |
      * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
37 |  |
      * GNU General Public License for more details.
38 |  |
      *
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      * Contact details for copyright holder:
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      *
41 |  |
      *     William Chesters <williamc At paneris.org>
42 |  |
      */
43 |  |
     package org.melati.util;
44 |  |
45 |  |
     import java.util.Enumeration;
46 |  |
     import java.util.NoSuchElementException;
47 |  |
48 |  |
     /**
49 |  |
      * A utility for tokenising a string made up of comma-separated
50 |  |
      * variables.  Unlike Tim's effort, it handles quoted variables as
51 |  |
      * well.
52 |  |
      *
53 |  |
      * <PRE>
54 |  |
      *   foo, bar om,,"baz, ,oof",xyz,   ->
55 |  |
      *     "foo", " bar om", "", "baz, , oof", "xyz", ""
56 |  |
      * </PRE>
57 |  |
      *
58 |  |
      * @author      williamc AT paneris.org
59 |  |
      */
60 |  |
61 | 0 |
     public class CSVStringEnumeration implements Enumeration<String> {
62 |  |
63 | 0 |
       private String line = "";
64 | 0 |
       private boolean emptyLastField = false;
65 | 0 |
       int p = 0;
66 |  |
67 |  |
       /**
68 |  |
        * Look at a new string.
69 |  |
        */
70 |  |
       public void reset(String lineP) {
71 | 0 |
         this.line = lineP;
72 | 0 |
         p = 0;
73 | 0 |
       }
74 |  |
75 |  |
       /**
76 |  |
        * Are there any more tokens to come?
77 |  |
        * {@inheritDoc}
78 |  |
        * @see java.util.Enumeration#hasMoreElements()
79 |  |
        */
80 |  |
       public boolean hasMoreElements() {
81 | 0 |
         return emptyLastField || p < line.length();
82 |  |
       }
83 |  |
84 |  |
       /**
85 |  |
        * Return the next token as an <TT>Object</TT>.
86 |  |
        * {@inheritDoc}
87 |  |
        * @see java.util.Enumeration#nextElement()
88 |  |
        */
89 |  |
       public final String nextElement() {
90 | 0 |
         return nextToken();
91 |  |
       }
92 |  |
93 |  |
       /**
94 |  |
        * @return the next token as a <TT>String</TT>.
95 |  |
        */
96 |  |
       public String nextToken() {
97 |  |
98 | 0 |
         if (emptyLastField) {
99 | 0 |
           emptyLastField = false;
100 | 0 |
           return "";
101 |  |
         }
102 |  |
103 | 0 |
         if (p >= line.length()) throw new NoSuchElementException();
104 |  |
105 | 0 |
         if (line.charAt(p) == '"') {
106 | 0 |
           ++p;
107 |  |
           // we need to allow for quotes inside quoted fields, so now test for ",
108 | 0 |
           int q = line.indexOf("\",", p);
109 |  |
           // if it is not there, we are (hopefully) at the end of a line
110 | 0 |
           if (q == -1 && (line.indexOf('"', p) == line.length()-1))
111 | 0 |
             q = line.length()-1;
112 |  |
113 | 0 |
           if (q == -1) {
114 | 0 |
              p = line.length();
115 | 0 |
              throw new IllegalArgumentException("Unclosed quotes");
116 |  |
           }
117 |  |
118 | 0 |
           String it = line.substring(p, q);
119 |  |
120 | 0 |
           ++q;
121 | 0 |
           p = q+1;
122 | 0 |
           if (q < line.length()) {
123 | 0 |
             if (line.charAt(q) != ',') {
124 | 0 |
               p = line.length();
125 | 0 |
               throw new IllegalArgumentException("No comma after quotes");
126 |  |
             }
127 | 0 |
             else if (q == line.length() - 1)
128 | 0 |
               emptyLastField = true;
129 |  |
           }
130 | 0 |
           return it;
131 |  |
         } else {
132 | 0 |
           int q = line.indexOf(',', p);
133 | 0 |
           if (q == -1) {
134 | 0 |
             String it = line.substring(p);
135 | 0 |
             p = line.length();
136 | 0 |
             return it;
137 |  |
           } else {
138 | 0 |
               String it = line.substring(p, q);
139 | 0 |
               if (q == line.length() - 1)
140 | 0 |
                 emptyLastField = true;
141 | 0 |
               p = q + 1;
142 | 0 |
               return it;
143 |  |
           }
144 |  |
         }
145 |  |
       }
146 |  |
147 |  |
     }