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32
33 package websphinx;
34
35 import java.io.*;
36 import java.net.URL  ;
37 import rcm.util.Str;
38
39 public class RecordTransformer extends RewritableLinkTransformer {
40
41 String prolog = "<HTML><HEAD><TITLE>Extracted Records</TITLE></HEAD><BODY><TABLE>\n";
42 String epilog = "</TABLE></BODY></HTML>\n";
43
44 String recordStart = "<TR>\n<TD><A HREF=\"%u\">%n.</A>\n";
45 String recordEnd = "\n";
46 String recordDivider = "";
47
48 String fieldStart = " <TD>";
49 String fieldEnd = "\n";
50 String fieldDivider = "";
51
52 int nRecords = 0;
53
54 public RecordTransformer (String filename) throws IOException {
55 super (filename);
56 }
57
58 public synchronized void setProlog (String prolog) {
59 this.prolog = prolog;
60 }
61 public synchronized String getProlog () {
62 return prolog;
63 }
64
65 public synchronized void setEpilog (String epilog) {
66 this.epilog = epilog;
67 }
68 public synchronized String getEpilog () {
69 return epilog;
70 }
71
72 public synchronized void setRecordStart (String recordStart) {
73 this.recordStart = recordStart;
74 }
75 public synchronized String getRecordStart () {
76 return recordStart;
77 }
78
79 public synchronized void setRecordEnd (String recordEnd) {
80 this.recordEnd = recordEnd;
81 }
82 public synchronized String getRecordEnd () {
83 return recordEnd;
84 }
85
86 public synchronized void setRecordDivider (String recordDivider) {
87 this.recordDivider = recordDivider;
88 }
89 public synchronized String getRecordDivider () {
90 return recordDivider;
91 }
92
93 public synchronized void setFieldStart (String fieldStart) {
94 this.fieldStart = fieldStart;
95 }
96 public synchronized String getFieldStart () {
97 return fieldStart;
98 }
99
100 public synchronized void setFieldEnd (String fieldEnd) {
101 this.fieldEnd = fieldEnd;
102 }
103 public synchronized String getFieldEnd () {
104 return fieldEnd;
105 }
106
107 public synchronized void setFieldDivider (String fieldDivider) {
108 this.fieldDivider = fieldDivider;
109 }
110 public synchronized String getFieldDivider () {
111 return fieldDivider;
112 }
113
114
117 public synchronized void flush () throws IOException {
118 long p = getFilePointer ();
119 if (nRecords == 0)
120 emit (prolog);
121 emit (epilog);
122 seek (p);
123 super.flush ();
124 }
125
126
127 public synchronized int getRecordCount () {
128 return nRecords;
129 }
130
131 public synchronized void writeRecord (Object [] fields, boolean asText) throws IOException {
132 ++nRecords;
133
134 emit ((nRecords == 1) ? prolog : recordDivider);
135
136 URL url = urlOfFirstRegion (fields);
137
138 emitTemplate (recordStart, url, nRecords);
139 for (int i=0; i<fields.length; ++i) {
140 if (i > 0)
141 emit (fieldDivider);
142 emit (fieldStart);
143
144 Object f = fields[i];
145 if (f instanceof Region) {
146 Region r = (Region)fields[i];
147 if (asText)
148 write (r.toText());
149 else
150 write (r);
151 }
152 else
153 write (f.toString ());
154
155 emit (fieldEnd);
156 }
157 emitTemplate (recordEnd, url, nRecords);
158 }
159
160 private URL urlOfFirstRegion (Object [] fields) {
161 for (int i=0; i<fields.length; ++i)
162 if (fields[i] instanceof Region) {
163 Region r = (Region)fields[i];
164 return r.getSource().getURL();
165 }
166 return null;
167 }
168
169 private void emitTemplate (String template, URL url, int record) throws IOException {
170 if (template == null || template.length() == 0)
171 return;
172
173 template = Str.replace (template, "%n", String.valueOf (record));
174 template = Str.replace (template, "%u", url != null ? url.toString () : "");
175 emit (template);
176 }
177
178
193
194 }
195 |
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