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1
4 package com.tc.util;
5
6 import org.apache.commons.lang.ClassUtils;
7
8
12 public class StandardStringifier implements Stringifier {
13
14 public static final StandardStringifier INSTANCE = new StandardStringifier();
15
16 private StandardStringifier() {
17 }
19
20 public String  toString(Object o) {
21 if (o == null) return "<null>";
22 else if (o instanceof Object []) {
23 return toString((Object []) o);
24 } else if (o instanceof byte[]) {
25 return toString((byte[]) o);
26 } else if (o instanceof short[]) {
27 return toString((short[]) o);
28 } else if (o instanceof int[]) {
29 return toString((int[]) o);
30 } else if (o instanceof long[]) {
31 return toString((long[]) o);
32 } else if (o instanceof boolean[]) {
33 return toString((boolean[]) o);
34 } else if (o instanceof char[]) {
35 return toString((char[]) o);
36 } else if (o instanceof float[]) {
37 return toString((float[]) o);
38 } else if (o instanceof double[]) {
39 return toString((double[]) o);
40 } else {
41 return o.toString();
42 }
43 }
44
45 private static final int MAX_ITEMS_TO_SHOW = 20;
46
47 private String toString(Object [] arr) {
48 StringBuffer out = new StringBuffer ();
49
50 out.append(ClassUtils.getShortClassName(arr.getClass().getComponentType()) + "[" + arr.length + "]");
51 if (arr.length > 0) {
52 out.append(": ");
53 int count = Math.min(arr.length, MAX_ITEMS_TO_SHOW);
54 for (int i = 0; i < count; ++i) {
55 if (i > 0) out.append(", ");
56 out.append(toString(arr[i]));
57 }
58
59 if (arr.length > count) {
60 out.append(", ...");
61 }
62 }
63
64 return out.toString();
65 }
66
67 private String toString(byte[] arr) {
68 return HexDump.dump(arr);
69 }
70
71 private String toString(short[] arr) {
72 StringBuffer out = new StringBuffer ();
73
74 out.append(ClassUtils.getShortClassName(arr.getClass().getComponentType()) + "[" + arr.length + "]");
75 if (arr.length > 0) {
76 out.append(": ");
77 int count = Math.min(arr.length, MAX_ITEMS_TO_SHOW);
78 for (int i = 0; i < count; ++i) {
79 if (i > 0) out.append(", ");
80 out.append("" + arr[i]);
81 }
82
83 if (arr.length > count) {
84 out.append(", ...");
85 }
86 }
87
88 return out.toString();
89 }
90
91 private String toString(int[] arr) {
92 StringBuffer out = new StringBuffer ();
93
94 out.append(ClassUtils.getShortClassName(arr.getClass().getComponentType()) + "[" + arr.length + "]");
95 if (arr.length > 0) {
96 out.append(": ");
97 int count = Math.min(arr.length, MAX_ITEMS_TO_SHOW);
98 for (int i = 0; i < count; ++i) {
99 if (i > 0) out.append(", ");
100 out.append("" + arr[i]);
101 }
102
103 if (arr.length > count) {
104 out.append(", ...");
105 }
106 }
107
108 return out.toString();
109 }
110
111 private String toString(long[] arr) {
112 StringBuffer out = new StringBuffer ();
113
114 out.append(ClassUtils.getShortClassName(arr.getClass().getComponentType()) + "[" + arr.length + "]");
115 if (arr.length > 0) {
116 out.append(": ");
117 int count = Math.min(arr.length, MAX_ITEMS_TO_SHOW);
118 for (int i = 0; i < count; ++i) {
119 if (i > 0) out.append(", ");
120 out.append("" + arr[i]);
121 }
122
123 if (arr.length > count) {
124 out.append(", ...");
125 }
126 }
127
128 return out.toString();
129 }
130
131 private String toString(char[] arr) {
132 StringBuffer out = new StringBuffer ();
133
134 out.append(ClassUtils.getShortClassName(arr.getClass().getComponentType()) + "[" + arr.length + "]");
135 if (arr.length > 0) {
136 out.append(": ");
137 int count = Math.min(arr.length, MAX_ITEMS_TO_SHOW);
138 for (int i = 0; i < count; ++i) {
139 if (i > 0) out.append(", ");
140 out.append("" + arr[i]);
141 }
142
143 if (arr.length > count) {
144 out.append(", ...");
145 }
146 }
147
148 return out.toString();
149 }
150
151 private String toString(float[] arr) {
152 StringBuffer out = new StringBuffer ();
153
154 out.append(ClassUtils.getShortClassName(arr.getClass().getComponentType()) + "[" + arr.length + "]");
155 if (arr.length > 0) {
156 out.append(": ");
157 int count = Math.min(arr.length, MAX_ITEMS_TO_SHOW);
158 for (int i = 0; i < count; ++i) {
159 if (i > 0) out.append(", ");
160 out.append("" + arr[i]);
161 }
162
163 if (arr.length > count) {
164 out.append(", ...");
165 }
166 }
167
168 return out.toString();
169 }
170
171 private String toString(double[] arr) {
172 StringBuffer out = new StringBuffer ();
173
174 out.append(ClassUtils.getShortClassName(arr.getClass().getComponentType()) + "[" + arr.length + "]");
175 if (arr.length > 0) {
176 out.append(": ");
177 int count = Math.min(arr.length, MAX_ITEMS_TO_SHOW);
178 for (int i = 0; i < count; ++i) {
179 if (i > 0) out.append(", ");
180 out.append("" + arr[i]);
181 }
182
183 if (arr.length > count) {
184 out.append(", ...");
185 }
186 }
187
188 return out.toString();
189 }
190
191 private String toString(boolean[] arr) {
192 StringBuffer out = new StringBuffer ();
193
194 out.append(ClassUtils.getShortClassName(arr.getClass().getComponentType()) + "[" + arr.length + "]");
195 if (arr.length > 0) {
196 out.append(": ");
197 int count = Math.min(arr.length, MAX_ITEMS_TO_SHOW);
198 for (int i = 0; i < count; ++i) {
199 if (i > 0) out.append(", ");
200 out.append("" + arr[i]);
201 }
202
203 if (arr.length > count) {
204 out.append(", ...");
205 }
206 }
207
208 return out.toString();
209 }
210
211 }
212 |
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