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1 package org.roller.presentation.velocity.plugins.smileys;
2
3 import org.apache.commons.lang.StringEscapeUtils;
4 import org.apache.commons.logging.Log;
5 import org.apache.commons.logging.LogFactory;
6 import org.apache.velocity.context.Context;
7 import org.roller.RollerException;
8 import org.roller.pojos.WeblogEntryData;
9 import org.roller.presentation.RollerRequest;
10 import org.roller.presentation.velocity.PagePlugin;
11
12 import java.util.Enumeration  ;
13 import java.util.Properties ;
14 import java.util.regex.Matcher ;
15 import java.util.regex.Pattern ;
16
17
23 public class SmileysPlugin implements PagePlugin
24 {
25 private String name = "Emoticons";
26 private String description = "Change ASCII emoticons to graphics. " +
27 ":-) becomes <img SRC='./images/smileys/smile.gif'>";
28
29 public String toString() { return name; }
30
31 static Pattern [] smileyPatterns = new Pattern [0];
32 static String [] imageTags = new String [0];
33
34 private static Log mLogger =
35 LogFactory.getFactory().getInstance(SmileysPlugin.class);
36
37
40 private static Properties smileyDefs = new Properties ();
41 static
42 {
43 try
44 {
45 smileyDefs.load(SmileysPlugin.class.getResourceAsStream("smileys.properties"));
46 }
47 catch (Exception e)
48 {
49 mLogger.error("Unable to load smileys.properties", e);
50 }
51 }
52
53 public SmileysPlugin()
54 {
55 mLogger.debug("SmileysPlugin instantiated.");
56 }
57
58
64 public String render(String text)
65 {
66 Matcher matcher = null;
67 for (int i=0; i<smileyPatterns.length; i++)
68 {
69 matcher = smileyPatterns[i].matcher(text);
70 text = matcher.replaceAll(imageTags[i]);
71 }
72 return text;
73 }
74
75
82 public synchronized void init(RollerRequest rreq, Context ctx) throws RollerException
83 {
84 if (SmileysPlugin.smileyPatterns.length < 1)
86 {
87 String contextPath = "";
88 if (rreq != null && rreq.getRequest() != null)
89 {
90 contextPath = rreq.getRequest().getContextPath();
91 }
92 Pattern [] tempP = new Pattern [SmileysPlugin.smileyDefs.size()];
93 String [] tempS = new String [SmileysPlugin.smileyDefs.size()];
94 int count = 0;
96 Enumeration enum1 = SmileysPlugin.smileyDefs.propertyNames();
97 while(enum1.hasMoreElements())
98 {
99 String smiley = (String )enum1.nextElement();
100 String smileyAlt = htmlEscape(smiley);
101 tempP[count] = Pattern.compile(regexEscape(smiley));
102 tempS[count] = "<img SRC=\"" +
103 contextPath + "/images/smileys/" +
104 smileyDefs.getProperty(smiley, "smile.gif") +
105 "\" class=\"smiley\"" +
106 " alt=\"" + smileyAlt + "\"" +
107 " title=\"" + smileyAlt +"\">";
108 count++;
110 }
111 SmileysPlugin.smileyPatterns = tempP;
112 SmileysPlugin.imageTags = tempS;
113 }
114 }
115
116
120 private String htmlEscape(String smiley)
121 {
122 char[] chars = smiley.toCharArray();
123 StringBuffer buf = new StringBuffer ();
124 for (int i=0; i<chars.length; i++)
125 {
126 if (chars[i] == '"')
127 {
128 buf.append(""");
129 }
130 else if (chars[i] == '>')
131 {
132 buf.append(">");
133 }
134 else if (chars[i] == '<')
135 {
136 buf.append("<");
137 }
138 else
139 {
140 buf.append(chars[i]);
141 }
142 }
143 return buf.toString();
144 }
145
146
153 private static char[] escape_regex = new char[]
154 {'-', '(', ')', '\\', '|', ':', '^', '$', '*', '+', '?',
155 '{', '}', '!', '=', '<', '>', '&', '[', ']' };
156 private String regexEscape(String smiley)
157 {
158 char[] chars = smiley.toCharArray();
159 StringBuffer buf = new StringBuffer ();
160 for (int i=0; i<chars.length; i++)
161 {
162 for (int x=0; x<escape_regex.length; x++)
163 {
164 if (escape_regex[x] == chars[i])
165 {
166 buf.append("\\");
167 break;
168 }
169 }
170 buf.append(chars[i]);
171 }
172 return buf.toString();
173 }
174
175
178 public String render(WeblogEntryData entry, boolean skipFlag)
179 {
180 return render(entry.getText());
181 }
182
183 public String getName() { return name; }
184 public String getDescription() { return StringEscapeUtils.escapeJavaScript(description); }
185 }
186 |
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