1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
|
12 | |
|
13 | |
|
14 | |
|
15 | |
package org.apache.tapestry.describe; |
16 | |
|
17 | |
import org.apache.hivemind.Location; |
18 | |
import org.apache.tapestry.IMarkupWriter; |
19 | |
import org.apache.tapestry.IRequestCycle; |
20 | |
|
21 | |
import java.io.*; |
22 | |
import java.net.URL; |
23 | |
|
24 | |
|
25 | |
|
26 | |
|
27 | |
|
28 | |
|
29 | |
|
30 | |
|
31 | |
|
32 | |
|
33 | 0 | public class LocationRenderStrategy implements RenderStrategy |
34 | |
{ |
35 | |
|
36 | |
|
37 | |
|
38 | |
|
39 | |
private static final int RANGE = 5; |
40 | |
|
41 | |
public void renderObject(Object object, IMarkupWriter writer, |
42 | |
IRequestCycle cycle) |
43 | |
{ |
44 | 0 | Location l = (Location) object; |
45 | |
|
46 | |
|
47 | |
|
48 | 0 | writer.print(l.toString()); |
49 | |
|
50 | 0 | int lineNumber = l.getLineNumber(); |
51 | |
|
52 | 0 | if (lineNumber < 1) |
53 | 0 | return; |
54 | |
|
55 | 0 | URL url = l.getResource().getResourceURL(); |
56 | |
|
57 | 0 | if (url == null) |
58 | 0 | return; |
59 | |
|
60 | 0 | writeResourceContent(writer, url, lineNumber); |
61 | 0 | } |
62 | |
|
63 | |
private void writeResourceContent(IMarkupWriter writer, URL url, int lineNumber) |
64 | |
{ |
65 | 0 | LineNumberReader reader = null; |
66 | |
|
67 | |
try |
68 | |
{ |
69 | 0 | reader = new LineNumberReader(new BufferedReader( new InputStreamReader(url.openStream()))); |
70 | |
|
71 | 0 | writer.beginEmpty("br"); |
72 | 0 | writer.begin("table"); |
73 | 0 | writer.attribute("class", "location-content"); |
74 | 0 | writer.attribute("cellspacing", "0"); |
75 | 0 | writer.attribute("cellpadding", "0"); |
76 | |
|
77 | |
while(true) |
78 | |
{ |
79 | 0 | String line = reader.readLine(); |
80 | |
|
81 | 0 | if (line == null) |
82 | 0 | break; |
83 | |
|
84 | 0 | int currentLine = reader.getLineNumber(); |
85 | |
|
86 | 0 | if (currentLine > lineNumber + RANGE) |
87 | 0 | break; |
88 | |
|
89 | 0 | if (currentLine < lineNumber - RANGE) |
90 | 0 | continue; |
91 | |
|
92 | 0 | writer.begin("tr"); |
93 | |
|
94 | 0 | if (currentLine == lineNumber) |
95 | 0 | writer.attribute("class", "target-line"); |
96 | |
|
97 | 0 | writer.begin("td"); |
98 | 0 | writer.attribute("class", "line-number"); |
99 | 0 | writer.print(currentLine); |
100 | 0 | writer.end(); |
101 | |
|
102 | 0 | writer.begin("td"); |
103 | |
|
104 | |
|
105 | |
|
106 | 0 | String spacers = extractWhitespaceStart(line); |
107 | |
|
108 | 0 | if (spacers != null && spacers.length() > 0) |
109 | |
{ |
110 | 0 | writer.printRaw(spacers); |
111 | |
} |
112 | |
|
113 | 0 | writer.print(line); |
114 | 0 | writer.end("tr"); |
115 | 0 | writer.println(); |
116 | 0 | } |
117 | |
|
118 | 0 | reader.close(); |
119 | 0 | reader = null; |
120 | |
} |
121 | 0 | catch (Exception ex) |
122 | |
{ |
123 | |
|
124 | |
} |
125 | |
finally |
126 | |
{ |
127 | 0 | writer.end("table"); |
128 | 0 | close(reader); |
129 | 0 | } |
130 | 0 | } |
131 | |
|
132 | |
|
133 | |
|
134 | |
|
135 | |
|
136 | |
|
137 | |
|
138 | |
|
139 | |
|
140 | |
String extractWhitespaceStart(String input) |
141 | |
{ |
142 | 0 | if (input == null || input.length() < 1) |
143 | 0 | return null; |
144 | |
|
145 | 0 | char[] vals = input.toCharArray(); |
146 | 0 | StringBuffer ret = new StringBuffer(); |
147 | |
|
148 | 0 | for (int i=0; i < vals.length; i++) |
149 | |
{ |
150 | 0 | if (Character.isWhitespace(vals[i])) |
151 | |
{ |
152 | 0 | ret.append(" "); |
153 | 0 | continue; |
154 | |
} |
155 | |
|
156 | 0 | if (vals[i] == '\t') |
157 | |
{ |
158 | 0 | ret.append(" "); |
159 | |
continue; |
160 | |
} |
161 | |
|
162 | |
break; |
163 | |
} |
164 | |
|
165 | 0 | return ret.toString(); |
166 | |
} |
167 | |
|
168 | |
private void close(Reader reader) |
169 | |
{ |
170 | |
try |
171 | |
{ |
172 | 0 | if (reader != null) |
173 | 0 | reader.close(); |
174 | |
} |
175 | 0 | catch (IOException ex) |
176 | |
{ |
177 | |
|
178 | 0 | } |
179 | 0 | } |
180 | |
|
181 | |
} |