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1
14
15 package org.quickserver.util;
16
17 import java.io.*;
18
19
23 public class MyString {
24 private static Runtime  runtime = Runtime.getRuntime();
25 private static java.text.DecimalFormat doublePrcNum =
26 new java.text.DecimalFormat ("#,##0.00");
27
28 public static String replace(String source, String key,
29 String with) {
30 if(source==null)
31 throw new NullPointerException ("Parameter -> source was null");
32 if(key==null)
33 throw new NullPointerException ("Parameter -> key was null");
34 if(with==null)
35 throw new NullPointerException ("Parameter -> with was null");
36
37 int start=0;
38 int end=0;
39 String result="";
40
41 start=source.indexOf(key);
42 end=start+key.length();
43
44 if(start==-1)
45 return null;
46
47 result=source.substring(0,start);
48 result+=with;
49 result+=source.substring(end,source.length());
50
51 return result;
52 }
53
54 public static String replaceAll(String source, String key,
55 String with) {
56 if(source==null)
57 throw new NullPointerException ("Parameter -> source was null");
58 if(key==null)
59 throw new NullPointerException ("Parameter -> key was null");
60 if(with==null)
61 throw new NullPointerException ("Parameter -> with was null");
62
63 String temp="";
64
65 while(true) {
66 temp="";
67 temp=replace(source,key,with);
68 if(temp==null)
69 break;
70 else
71 source=temp;
72 }
73
74 return source;
75 }
76
77
78 public static int replaceCount(String source,
79 String key) {
80 if(source==null)
81 throw new NullPointerException ("Parameter -> source was null");
82 if(key==null)
83 throw new NullPointerException ("Parameter -> key was null");
84
85 int count=0;
86 String result="";
87 String temp="";
88
89 result=source;
90 while(true) {
91 temp="";
92 temp=replace(result,key,"");
93 if(temp==null) {
94 break;
95 }
96 else {
97 result=temp;
98 count++;
99 }
100 }
101
102 return count;
103 }
104
105 public static String replaceAllNo(String source,
106 String with) {
107 if(source==null)
108 throw new NullPointerException ("One of parameter -> source was null");
109 if(with==null)
110 throw new NullPointerException ("One of parameter -> with was null");
111
112 for(int i=0;i<10;i++)
113 source=replaceAll(source,""+i,with);
114
115 return source;
116 }
117
118
119 public static String removeAllHtmlSpChar(String source) {
120 String temp = source;
121 temp = replaceAll(temp," "," ");
122 temp = replaceAll(temp,"<","<");
123 temp = replaceAll(temp,">",">");
124 temp = replaceAll(temp,"&","&");
125 temp = replaceAll(temp,""","\"");
126 return temp;
127 }
128
129 public static String replaceTags(String source, String with) {
132 if(source==null)
133 throw new NullPointerException ("One of parameter -> source was null");
134 if(with==null)
135 throw new NullPointerException ("One of parameter -> with was null");
136
137 int start=0;
138 int end=0;
139 int error=0;
140 String result="";
141
142 start=source.indexOf("<");
143 end=source.indexOf(">",start+1);
144
145 error=source.indexOf("<",start+1);
146 if(error!=-1 && error<end)
147 throw new IllegalArgumentException ("< found before >");
148
149 if(start==-1 || end==-1)
150 return null;
151
152 result=source.substring(0,start);
153 result+=with;
154 result+=source.substring(end+1,source.length());
155
156 return result;
157 }
158
159 public static String replaceAllTags(String source, String with) {
160 if(source==null)
161 throw new NullPointerException ("One of parameter -> source was null");
162 if(with==null)
163 throw new NullPointerException ("One of parameter -> with was null");
164
165 String temp="";
166
167 while(true) {
168 temp="";
169 temp=replaceTags(source,with);
170 if(temp==null)
171 break;
172 else
173 source=temp;
174 }
175
176 return source;
177 }
178
179
183 public static String getStackTrace(Throwable e) {
184 StringWriter writer = new StringWriter(1024);
185 e.printStackTrace(new PrintWriter(writer));
186 return writer.toString();
187 }
188
189
193 public static String getMemInfo(float bytes) {
194 if(bytes<1024) {
195 return doublePrcNum.format(bytes)+" B";
196 }
197
198 bytes = bytes/1024;
199 if(bytes<1024) {
200 return doublePrcNum.format(bytes)+" KB";
201 }
202
203 bytes = bytes/1024;
204 if(bytes<1024) {
205 return doublePrcNum.format(bytes)+" MB";
206 }
207
208 bytes = bytes/1024;
209 return doublePrcNum.format(bytes)+" GB";
210 }
211
212
216 public static String getSystemInfo(String version) {
217 StringBuffer sb = new StringBuffer ();
218 sb.append("---- System Info Start ---");
219 sb.append("\r\n");
220
221 sb.append("QuickServer v");
222 sb.append(version);
223 sb.append(" is being used.");
224 sb.append("\r\n");
225
226 sb.append("Java VM v");
227 sb.append(System.getProperty("java.version"));
228 sb.append(" is being used.");
229 sb.append("\r\n");
230
231 sb.append("Operating System: ");
232 sb.append(System.getProperty("os.name"));
233 sb.append(" ");
234 sb.append(System.getProperty("os.version"));
235 sb.append("\r\n");
236
237 sb.append("Current working directory: ");
238 sb.append(System.getProperty("user.dir"));
239 sb.append("\r\n");
240
241 sb.append("Class/s loaded from: ");
242 sb.append(new MyString().getClass().getProtectionDomain().getCodeSource().getLocation());
243 sb.append("\r\n");
244
245 sb.append("Total memory currently available: ");
246 sb.append(MyString.getMemInfo(runtime.totalMemory()));
247 sb.append("\r\n");
248 sb.append("Memory currently in use: ");
249 sb.append(MyString.getMemInfo(runtime.totalMemory()-runtime.freeMemory()));
250 sb.append("\r\n");
251 sb.append("Maximum memory available: ");
252 sb.append(MyString.getMemInfo(runtime.maxMemory()));
253 sb.append("\r\n");
254
255
256 sb.append("---- System Info End ---");
257
258 return sb.toString();
259 }
260
261 public static String alignRight(String data, int len) {
262 StringBuffer sb = new StringBuffer (data);
263 while(sb.length()<len) {
264 sb.insert(0, ' ');
265 }
266 return sb.toString();
267 }
268
269 public static String alignLeft(String data, int len) {
270 StringBuffer sb = new StringBuffer (data);
271 while(sb.length()<len) {
272 sb.append( ' ');
273 }
274 return sb.toString();
275 }
276 }
277 |
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