|
1
37 package net.sourceforge.cruisecontrol.util;
38
39 import net.sourceforge.cruisecontrol.CruiseControlException;
40 import org.jdom.Element;
41 import org.jdom.input.SAXBuilder;
42
43 import java.io.BufferedInputStream  ;
44 import java.io.BufferedOutputStream ;
45 import java.io.BufferedReader ;
46 import java.io.File ;
47 import java.io.FileInputStream ;
48 import java.io.FileNotFoundException ;
49 import java.io.FileOutputStream ;
50 import java.io.FileReader ;
51 import java.io.IOException ;
52 import java.io.InputStream ;
53 import java.util.Properties ;
54
55 public final class Util {
56
57 private Util() {
58 }
59
60 public static Element loadConfigFile(File configFile) throws CruiseControlException {
61 try {
62 SAXBuilder builder = new SAXBuilder("org.apache.xerces.parsers.SAXParser");
63 return builder.build(configFile).getRootElement();
64 } catch (Exception e) {
65 throw new CruiseControlException(
66 "failed to load config file [" + (configFile != null
67 ? configFile.getName()
68 : "") + "]",
69 e);
70 }
71 }
72
73 public static Element parseConfig(InputStream in) throws CruiseControlException {
74 try {
75 SAXBuilder builder = new SAXBuilder();
76 return builder.build(in).getRootElement();
77 } catch (Exception e) {
78 throw new CruiseControlException("failed to parse configuration", e);
79 }
80 }
81
82
86 public static void deleteFile(File file) {
87 if (file == null || !file.exists()) {
88 return;
89 }
90 if (file.isDirectory()) {
91 File [] children = file.listFiles();
92 for (int i = 0; i < children.length; i++) {
93 File child = children[i];
94 deleteFile(child);
95 }
96 }
97 file.delete();
98 }
99
100 public static boolean isWindows() {
101 String osName = Util.getOsName();
102 return osName.indexOf("Windows") > -1;
103 }
104
105 public static String getOsName() {
106 return System.getProperty("os.name");
107 }
108
109
121 public static Properties loadPropertiesFromFile(File file)
122 throws CruiseControlException, IOException {
123 Properties properties = new Properties ();
124
125 BufferedInputStream bis = null;
127 try {
128 bis = new BufferedInputStream (new FileInputStream (file));
129 properties.load(bis);
130 } catch (FileNotFoundException e) {
131 throw new CruiseControlException(
132 "Could not load properties from file "
133 + file.getAbsolutePath() + ". It does not exist.",
134 e);
135 } finally {
136 if (bis != null) {
137 bis.close();
138 }
139 }
140
141 return properties;
142 }
143
144
160 public static void storePropertiesToFile(Properties properties,
161 String header, File file) throws CruiseControlException,
162 IOException {
163 BufferedOutputStream bos = null;
164
165 try {
166 bos = new BufferedOutputStream (new FileOutputStream (file));
167 properties.store(bos, header);
168 } catch (FileNotFoundException e) {
169 throw new CruiseControlException(
170 "Could not store properties to file "
171 + file.getAbsolutePath() + ". It does not exist.",
172 e);
173 } finally {
174 if (bos != null) {
175 bos.close();
176 }
177 }
178 }
179
180
183 public static String readFileToString(String fileName) throws IOException {
184 StringBuffer out = new StringBuffer ();
185 appendFileToBuffer(fileName, out);
186 return out.toString();
187 }
188
189 public static String readFileToString(File file) throws IOException {
190 BufferedReader reader = new BufferedReader (new FileReader (file));
191 StringBuffer result = new StringBuffer ();
192
193 String s = reader.readLine();
194 while (s != null) {
195 result.append(s.trim());
196 s = reader.readLine();
197 }
198 reader.close();
199
200 return result.toString();
201 }
202
203
206 public static void appendFileToBuffer(String fileName, StringBuffer out) throws IOException {
207 FileReader fr = null;
208 try {
209 fr = new FileReader (fileName);
210 char[] buff = new char[4096];
211 int size = fr.read(buff, 0, 4096);
212 while (size > 0) {
213 out.append(buff, 0, size);
214 size = fr.read(buff, 0, 4096);
215 }
216 } finally {
217 if (fr != null) {
218 try {
219 fr.close();
220 } catch (IOException ioe) {
221 }
223 }
224 }
225 }
226 }
227 |
Popular Tags |
Java API By Example, From Geeks To Geeks.