StringUtils


1   package SnowMailClient.utils;
2   
3   public class StringUtils
4   {
5   
6     public StringUtils()
7     {
8   
9     } // Constructor
10  
11  
12  
13    /** used for example to detect html files (starting with <html>)
14      ignores the blanks at the text start
15    */
16    public static boolean startsWithIgnoresCaseAndBlanks(String   text, String   start)
17    {
18      // Can be boost with Knuth's algorithm for fast search... ###
19      for(int i=0; i<text.length()-start.length(); i++)
20      {
21         //System.out.println("\""+text.substring(i, i+start.length())+"\"");
22         if( text.substring(i, i+start.length()).equalsIgnoreCase(start)) return true;
23  
24         if( text.charAt(i)==' ' || text.charAt(i)=='\r' || text.charAt(i)=='\n'
25             || text.charAt(i)=='\t') continue;
26         break;
27      }
28      return false;
29    }
30  
31    /** finds the index of <tagName
32       @return the position of the first letter of the tag, not <
33    */
34    public static int indexOfStartTagIgnoreCase(String   text, String   tagName)
35    {
36      for(int i=0; i<text.length()-tagName.length(); i++)
37      {
38        if(text.charAt(i)=='<')
39        {
40           String   tt = text.substring(i+1,i+1+tagName.length());
41           //System.out.println("."+tt+".");
42           if(tt.compareToIgnoreCase(tagName)==0) return i+1;
43        }
44      }
45      return -1;
46    }
47  
48    /** finds the index of tagName>
49       @return the position of >
50    */
51    public static int indexOfEndTagIgnoreCase(String   text, String   tagName)
52    {
53      for(int i=tagName.length(); i<text.length(); i++)
54      {
55        if(text.charAt(i)=='>')
56        {
57           String   tt = text.substring(i-tagName.length(), i);
58           //System.out.println("."+tt+".");
59           if(tt.compareToIgnoreCase(tagName)==0) return i;
60        }
61      }
62      return -1;
63    }
64  
65  
66    public static String   toString(byte[] array)
67    {
68      if(array==null) return "null";
69      if(array.length==0) return "{}";
70      StringBuffer   sb = new StringBuffer  ("{");
71      for(byte b:array)
72      {
73        sb.append(""+b);
74        sb.append(", ");
75  
76      }
77      return sb.substring(0, sb.length()-2)+"}";
78    }
79  
80    public static void main(String  [] a)
81    {
82      System.out.println(indexOfStartTagIgnoreCase("<br>  \r\t\n   <br><p>   <html>", "bR"));
83    }
84  
85  } // StringUtils
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