|
1
18 package org.apache.geronimo.interop.util;
19
20 import java.util.ArrayList  ;
21 import java.util.Collection ;
22 import java.util.Iterator ;
23 import java.util.List ;
24
25
26 public class ListUtil {
27
31 public static void addIfNotPresent(List list, Object item) {
32 if (!list.contains(item)) {
33 list.add(item);
34 }
35 }
36
37 public static ArrayList getCommaSeparatedList(String arg) {
38 return getListWithSeparator(arg, ",");
39 }
40
41 public static ArrayList getPathList(String arg) {
42 return getListWithSeparator(arg, java.io.File.pathSeparator);
43 }
44
45 public static ArrayList getSpaceSeparatedList(String arg) {
46 return getListWithSeparator(arg.replace('\t', ' ').replace('\r', ' ').replace('\n', ' '), " ");
47 }
48
49 public static ArrayList getListWithSeparator(String text, String separator) {
50 ArrayList list = new ArrayList ();
51 int n = text.length();
52 StringBuffer item = new StringBuffer ();
53 char endQuote = 0;
54 for (int i = 0; i < n; i++) {
55 if (endQuote == 0 && text.startsWith(separator, i)) {
56 add(list, item);
57 i += separator.length() - 1;
58 } else {
59 char c = text.charAt(i);
60 item.append(c);
61 if (endQuote != 0) {
62 if (c == endQuote) {
63 endQuote = 0;
64 }
65 } else if (c == '\'' || c == '\"') {
66 endQuote = c;
67 }
68 }
69 }
70 add(list, item);
71 return list;
72 }
73
74 public static String formatCommaSeparatedList(Collection list) {
75 return formatListWithSeparator(list, ",");
76 }
77
78 public static String formatSpaceSeparatedList(Collection list) {
79 return formatListWithSeparator(list, " ");
80 }
81
82 public static String formatListWithSeparator(Collection list, String separator) {
83 StringBuffer buffer = new StringBuffer ();
84 for (Iterator i = list.iterator(); i.hasNext();) {
85 Object item = i.next();
86 if (buffer.length() != 0) {
87 buffer.append(separator);
88 }
89 buffer.append(item.toString());
90 }
91 return buffer.toString();
92 }
93
94 public static ArrayList getArrayList(Object [] array) {
95 int n = array.length;
96 ArrayList list = new ArrayList (n);
97 for (int i = 0; i < n; i++) {
98 list.add(array[i]);
99 }
100 return list;
101 }
102
103 public static String [] getStringArray(List list) {
104 int n = list.size();
105 String [] array = new String [n];
106 int i = 0;
107 for (Iterator j = list.iterator(); j.hasNext(); i++) {
108 String s = (String ) j.next();
109 array[i] = s;
110 }
111 return array;
112 }
113
114 public static void printAll(java.io.PrintStream out, String rowPrefix, Collection values) {
115 for (Iterator i = values.iterator(); i.hasNext();) {
116 Object value = i.next();
117 if (rowPrefix != null) {
118 out.print(rowPrefix);
119 }
120 out.println(value);
121 }
122 }
123
124
128 private static void add(List list, StringBuffer itemBuffer) {
129 String item = itemBuffer.toString().trim();
130 if (item.length() != 0) {
131 list.add(item);
132 }
133 itemBuffer.setLength(0);
134 }
135 }
136 |
Popular Tags |
Java API By Example, From Geeks To Geeks.