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25 package org.snipsnap.util;
26
27 import org.apache.tools.ant.BuildException;
28 import org.apache.tools.ant.Task;
29
30 import java.io.File  ;
31 import java.io.FileInputStream ;
32 import java.io.FileWriter ;
33 import java.io.IOException ;
34 import java.io.PrintWriter ;
35 import java.text.SimpleDateFormat ;
36 import java.util.Date ;
37 import java.util.Iterator ;
38 import java.util.Properties ;
39 import java.util.StringTokenizer ;
40 import java.util.TreeSet ;
41 import java.util.List ;
42
43 public class PropertyConstantBuilder extends Task {
44 public static void main(String args[]) {
45 if (args.length < 2) {
46 System.err.println("usage: " + PropertyConstantBuilder.class.getName() +
47 " propertiesfile interface [prefix]");
48 System.exit(-1);
49 }
50 String prefix = "";
51 if(args.length > 2) {
52 prefix = args[2];
53 }
54
55 try {
56 new PropertyConstantBuilder().buildClass(args[0], new File (args[1]), prefix);
57 } catch (BuildException e) {
58 System.err.println("class build failed: " + e.getMessage());
59 System.exit(-1);
60 }
61 System.exit(0);
62 }
63
64 private String propertiesFile = null;
65 private String stubFile = null;
66 private String prefix = "";
67
68 public void execute() throws BuildException {
69 buildClass(propertiesFile, new File (stubFile), prefix);
70 }
71
72 public void setFile(String file) {
73 this.stubFile = file;
74 }
75
76 public void setProperties(String file) {
77 this.propertiesFile = file;
78 }
79
80 public void setPrefix(String prefix) {
81 this.prefix = prefix;
82 }
83
84 private void buildClass(String propertiesFile, File file, String prefix) throws BuildException {
85 Properties defaults = new Properties ();
86 String [] files = propertiesFile.split(" *, *");
87 for(int fileCount = 0; fileCount < files.length; fileCount++) {
88 try {
89 defaults.load(new FileInputStream (files[fileCount]));
90 } catch (IOException e) {
91 throw new BuildException("properties file '" + files[fileCount] + "' not found.");
92 }
93 }
94 try {
95 PrintWriter stubWriter = new PrintWriter (new FileWriter (stubFile));
96 stubWriter.println();
97 stubWriter.println(" // automatically created interface/constants stub from");
98 stubWriter.println(" // "+propertiesFile);
99 stubWriter.println(" // generated on " + new SimpleDateFormat ().format(new Date ()));
100
101 createConstants(stubWriter, defaults, prefix);
102
103 stubWriter.close();
104 } catch (IOException e) {
105 throw new BuildException("error writing class sources: " + e.getMessage());
106 }
107 }
108
109 private void createConstants(PrintWriter stubWriter, Properties properties, String prefix) {
110 TreeSet sorted = new TreeSet (properties.keySet());
111 Iterator it = sorted.iterator();
112 while (it.hasNext()) {
113 String property = (String ) it.next();
114 stubWriter.println(" // constant/getter for '"+property+"'");
116 stubWriter.print(" public final static String " + property.toUpperCase().replace('.', '_'));
117 stubWriter.println(" = \"" + property + "\";");
118 stubWriter.println(" public String get" + getCamlCase(property, prefix) + "();");
119 stubWriter.println(" public String set" + getCamlCase(property, prefix) + "(String value);");
120 }
121 }
122
123 private String getCamlCase(String name, String prefix) {
124 if(name.startsWith(prefix)) {
125 name = name.substring(prefix.length());
126 }
127 StringTokenizer tokenizer = new StringTokenizer (name, ".", false);
128 StringBuffer result = new StringBuffer ();
129 while (tokenizer.hasMoreTokens()) {
130 String token = tokenizer.nextToken();
131 result.append(token.substring(0, 1).toUpperCase());
132 if (token.length() > 1) {
133 result.append(token.substring(1));
134 }
135 }
136 return result.toString();
137 }
138 }
139 |
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