FilterCfg.java revision a921fd048da6858dc24d4370e3bba15fc9cc69ca 
1/* Copyright (C) 2003 Vladimir Roubtsov. All rights reserved.
2 *
3 * This program and the accompanying materials are made available under
4 * the terms of the Common Public License v1.0 which accompanies this distribution,
5 * and is available at http://www.eclipse.org/legal/cpl-v10.html
6 *
7 * $Id: FilterCfg.java,v 1.2 2004/05/20 02:28:07 vlad_r Exp $
8 */
9package com.vladium.emma.instr;
10
11import java.io.File;
12import java.io.IOException;
13import java.util.ArrayList;
14import java.util.Iterator;
15import java.util.List;
16
17import org.apache.tools.ant.BuildException;
18import org.apache.tools.ant.Task;
19
20import com.vladium.util.IConstants;
21import com.vladium.util.Strings;
22import com.vladium.emma.ant.StringValue;
23import com.vladium.emma.ant.SuppressableTask;
24import com.vladium.emma.filter.IInclExclFilter;
25
26// ----------------------------------------------------------------------------
27/**
28 * @author Vlad Roubtsov, (C) 2003
29 */
30public
31class FilterCfg
32{
33    // public: ................................................................
34
35
36    public static final class filterElement extends StringValue
37    {
38        public filterElement (final Task task)
39        {
40            super (task);
41        }
42
43        public void setValue (final String value)
44        {
45            final String [] specs = Strings.merge (new String [] {value}, COMMA_DELIMITERS, true);
46
47            for (int i = 0; i < specs.length; ++ i)
48            {
49                final String spec = specs [i];
50
51                if (spec.startsWith (IInclExclFilter.INCLUSION_PREFIX_STRING) ||
52                    spec.startsWith (IInclExclFilter.EXCLUSION_PREFIX_STRING))
53                {
54                    appendValue (spec, COMMA);
55                }
56                else
57                {
58                    appendValue (IInclExclFilter.INCLUSION_PREFIX + spec, COMMA); // default to inclusion
59                }
60            }
61        }
62
63        /**
64         * Set the 'file' attribute.
65         */
66        public void setFile (final File file)
67        {
68            appendValue ("@".concat (file.getAbsolutePath ()), COMMA); // actual file I/O delayed until getFilterSpecs()
69        }
70
71        public void setIncludes (final String value)
72        {
73            final String [] specs = Strings.merge (new String [] {value}, COMMA_DELIMITERS, true);
74
75            for (int i = 0; i < specs.length; ++ i)
76            {
77                final String spec = specs [i];
78
79                if (spec.startsWith (IInclExclFilter.INCLUSION_PREFIX_STRING))
80                {
81                    appendValue (spec, COMMA);
82                }
83                else
84                {
85                    if (spec.startsWith (IInclExclFilter.EXCLUSION_PREFIX_STRING))
86                        appendValue (IInclExclFilter.INCLUSION_PREFIX + spec.substring (1), COMMA); // override
87                    else
88                        appendValue (IInclExclFilter.INCLUSION_PREFIX + spec, COMMA);
89                }
90            }
91        }
92
93        public void setExcludes (final String value)
94        {
95            final String [] specs = Strings.merge (new String [] {value}, COMMA_DELIMITERS, true);
96
97            for (int i = 0; i < specs.length; ++ i)
98            {
99                final String spec = specs [i];
100
101                if (spec.startsWith (IInclExclFilter.EXCLUSION_PREFIX_STRING))
102                {
103                    appendValue (spec, COMMA);
104                }
105                else
106                {
107                    if (spec.startsWith (IInclExclFilter.INCLUSION_PREFIX_STRING))
108                        appendValue (IInclExclFilter.EXCLUSION_PREFIX + spec.substring (1), COMMA); // override
109                    else
110                        appendValue (IInclExclFilter.EXCLUSION_PREFIX + spec, COMMA);
111                }
112            }
113        }
114
115    } // end of nested class
116
117
118    public FilterCfg (final Task task)
119    {
120        if (task == null) throw new IllegalArgumentException ("null input: task");
121
122        m_task = task;
123        m_filterList = new ArrayList ();
124    }
125
126
127    // filter attribute/element:
128
129    public void setFilter (final String filter)
130    {
131        createFilter ().appendValue (filter, COMMA);
132    }
133
134    public filterElement createFilter ()
135    {
136        final filterElement result = new filterElement (m_task);
137        m_filterList.add (result);
138
139        return result;
140    }
141
142    // ACCESSORS:
143
144    public String [] getFilterSpecs ()
145    {
146        if (m_specs != null)
147            return m_specs;
148        else
149        {
150            if ((m_filterList == null) || m_filterList.isEmpty ())
151            {
152                m_specs = IConstants.EMPTY_STRING_ARRAY;
153            }
154            else
155            {
156                final String [] values = new String [m_filterList.size ()];
157
158                int j = 0;
159                for (Iterator i = m_filterList.iterator (); i.hasNext (); ++ j)
160                    values [j] = ((StringValue) i.next ()).getValue ();
161
162                try
163                {
164                    m_specs = Strings.mergeAT (values, COMMA_DELIMITERS, true);
165                }
166                catch (IOException ioe)
167                {
168                    throw (BuildException) SuppressableTask.newBuildException (m_task.getTaskName ()
169                        + ": I/O exception while processing input" , ioe, m_task.getLocation ()).fillInStackTrace ();
170                }
171            }
172
173            return m_specs;
174        }
175    }
176
177    // protected: .............................................................
178
179
180    protected static final String COMMA               = ",";
181    protected static final String COMMA_DELIMITERS    = COMMA + Strings.WHITE_SPACE;
182    protected static final String PATH_DELIMITERS     = COMMA.concat (File.pathSeparator);
183
184    // package: ...............................................................
185
186    // private: ...............................................................
187
188
189    private final Task m_task; // never null
190    private final List /* filterElement */ m_filterList; // never null
191
192    private transient String [] m_specs;
193
194} // end of class
195// ----------------------------------------------------------------------------