archive/net.sourceforge.phpeclipse.quantum.sql/src/com/quantum/wizards/URLBuilder.java

   1 package com.quantum.wizards;
   2
   3 import java.util.ArrayList;
   4 import java.util.List;
   5 import java.util.Map;
   6 import java.util.StringTokenizer;
   7
   8
   9 /**
  10  * <p>This class takes a URL pattern and creates a full URL.  A URL pattern might look
  11  * like this: <code>jdbc:postgresql://{hostname}:{port}/{dbname}</code>, and the
  12  * properties should include "hostname", "port" and "dbname".
  13  *
  14  * @author BC Holmes
  15  */
  16 public class URLBuilder {
  17
  18         public static String createURL(String urlPattern, Map properties) {
  19                 StringBuffer buffer = new StringBuffer();
  20                 boolean isVariable = false;
  21                 String variableName = null;
  22                 for (StringTokenizer tokenizer = new StringTokenizer(urlPattern, "{}", true);
  23                         tokenizer.hasMoreTokens(); ) {
  24                         String token = tokenizer.nextToken();
  25
  26                         if ("{".equals(token) && !isVariable) {
  27                                 isVariable = true;
  28                         } else if (isVariable && "}".equals(token) && variableName != null) {
  29                                 if (!properties.containsKey(variableName)) {
  30                                         buffer.append("{");
  31                                         buffer.append(variableName);
  32                                         buffer.append("}");
  33                                 } else {
  34                                         buffer.append(properties.get(variableName));
  35                                 }
  36                                 isVariable = false;
  37                         } else if (isVariable) {
  38                                 variableName = token;
  39                         } else {
  40                                 buffer.append(token);
  41                         }
  42                 }
  43                 return buffer.toString();
  44         }
  45
  46         public static String[] getVariableNames(String urlPattern) {
  47                 List list = new ArrayList();
  48                 if (urlPattern != null) {
  49                         boolean isVariable = false;
  50                         String variableName = null;
  51                         for (StringTokenizer tokenizer = new StringTokenizer(urlPattern, "{}", true);
  52                                 tokenizer.hasMoreTokens(); ) {
  53                                 String token = tokenizer.nextToken();
  54
  55                                 if ("{".equals(token) && !isVariable) {
  56                                         isVariable = true;
  57                                 } else if (isVariable && "}".equals(token) && variableName != null) {
  58                                         list.add(variableName);
  59                                         isVariable = false;
  60                                 } else if (isVariable) {
  61                                         variableName = token;
  62                                 }
  63                         }
  64                 }
  65                 return (String[]) list.toArray(new String[list.size()]);
  66         }
  67 }