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1 package org.ejen.ext;
22
23 import org.ejen.util.XSLUtil;
24 import org.ejen.util.DOMUtil;
25 import java.io.File  ;
26 import java.io.FileFilter ;
27 import java.io.IOException ;
28 import java.net.MalformedURLException ;
29 import org.w3c.dom.Document ;
30 import org.w3c.dom.Element ;
31 import org.apache.regexp.RE;
32 import org.apache.xpath.NodeSet;
33 import org.apache.xml.utils.WrappedRuntimeException;
34 import org.apache.xalan.extensions.ExpressionContext;
35
36
68 public class FileUtil {
69 public static final String S_TRUE = "true";
70 public static final String S_FALSE = "false";
71
72
75 protected FileUtil() {}
76
77
122 public static NodeSet properties(ExpressionContext context, String fileName) {
123 fileName = XSLUtil.evaluate(context, fileName);
124 Document doc = XSLUtil.getContextDocument(context);
125
126 try {
127 File f = new File (fileName);
128 NodeSet ns = new NodeSet();
129
130 ns.addElement(DOMUtil.createCDATANode(doc, "raw", fileName));
131 String s = f.getName();
132
133 ns.addElement(DOMUtil.createCDATANode(doc, "name", s));
134 int i = s.indexOf('.');
135
136 ns.addElement(DOMUtil.createCDATANode(doc, "name-no-ext",
137 ((i != -1) ? s.substring(0, i) : s)));
138 s = f.getParent();
139 ns.addElement(DOMUtil.createCDATANode(doc, "parent",
140 ((s != null) ? s : "")));
141 ns.addElement(DOMUtil.createCDATANode(doc, "path", f.getPath()));
142 ns.addElement(DOMUtil.createCDATANode(doc, "is-absolute",
143 (f.isAbsolute() ? S_TRUE : S_FALSE)));
144 ns.addElement(DOMUtil.createCDATANode(doc, "absolute-path",
145 f.getAbsolutePath()));
146 try {
147 ns.addElement(DOMUtil.createCDATANode(doc, "canonical-path",
148 f.getCanonicalPath()));
149 } catch (IOException e) {}
150 try {
151 ns.addElement(DOMUtil.createCDATANode(doc, "url",
152 f.toURL().toString()));
153 } catch (MalformedURLException e) {}
154 try {
155 ns.addElement(DOMUtil.createCDATANode(doc, "can-read",
156 (f.canRead() ? S_TRUE : S_FALSE)));
157 } catch (SecurityException e) {}
158 try {
159 ns.addElement(DOMUtil.createCDATANode(doc, "can-write",
160 (f.canWrite() ? S_TRUE : S_FALSE)));
161 } catch (SecurityException e) {}
162 try {
163 ns.addElement(DOMUtil.createCDATANode(doc, "exists",
164 (f.exists() ? S_TRUE : S_FALSE)));
165 } catch (SecurityException e) {}
166 try {
167 ns.addElement(DOMUtil.createCDATANode(doc, "is-directory",
168 (f.isDirectory() ? S_TRUE : S_FALSE)));
169 } catch (SecurityException e) {}
170 try {
171 ns.addElement(DOMUtil.createCDATANode(doc, "is-hidden",
172 (f.isHidden() ? S_TRUE : S_FALSE)));
173 } catch (SecurityException e) {}
174 try {
175 ns.addElement(DOMUtil.createCDATANode(doc, "last-modified",
176 Long.toString(f.lastModified())));
177 } catch (SecurityException e) {}
178 try {
179 ns.addElement(DOMUtil.createCDATANode(doc, "length",
180 Long.toString(f.length())));
181 } catch (SecurityException e) {}
182
183 return ns;
184 } catch (WrappedRuntimeException e) {
185 throw e;
186 } catch (Exception e) {
187 throw new WrappedRuntimeException(e);
188 }
189 }
190
191
233 public static NodeSet listFiles(ExpressionContext context, String path) {
234 return listFiles(context, path, null, false);
235 }
236
237
267 public static NodeSet listFiles(ExpressionContext context, String path,
268 String filter) {
269 return listFiles(context, path, filter, false);
270 }
271
272
297 public static NodeSet listFiles(ExpressionContext context, String path,
298 String filter, boolean rec) {
299 path = XSLUtil.evaluate(context, path);
300 final String ffilter = (filter != null)
301 ? XSLUtil.evaluate(context, filter)
302 : null;
303 Document doc = XSLUtil.getContextDocument(context);
304
305 try {
306 File f = new File (path);
307
308 if (!f.isDirectory()) {
309 throw new IllegalArgumentException (path + " is not a directory.");
310 }
311 FileFilter ff = null;
312
313 if (ffilter != null) {
314 ff = new FileFilter () {
315 RE _re = new RE(ffilter);
316 public boolean accept(File f) {
317 return f.isDirectory() || _re.match(f.getName());
318 }
319
320 public String getDescription() {
321 return ffilter;
322 }
323 };
324 }
325 File [] files = f.listFiles(ff);
326 NodeSet ns = new NodeSet();
327
328 appendFiles(doc, ns, files, ff, rec);
329 return ns;
330 } catch (Exception e) {
331 throw new WrappedRuntimeException(e);
332 }
333 }
334
335
345 protected static void appendFiles(Document doc, NodeSet ns, File [] files,
346 FileFilter ff, boolean rec) throws Exception {
347 for (int i = 0; i < files.length; i++) {
348 File f = files[i];
349
350 if (!f.isDirectory()) {
351 Element file = doc.createElement("file");
352 Element elt = doc.createElement("path");
353 String path = f.getCanonicalFile().getParent();
354
355 elt.appendChild(doc.createCDATASection((path != null)
356 ? path
357 : ""));
358 file.appendChild(elt);
359 elt = doc.createElement("sep");
360 elt.appendChild(doc.createCDATASection(f.separator));
361 file.appendChild(elt);
362 elt = doc.createElement("name");
363 elt.appendChild(doc.createCDATASection(f.getName()));
364 file.appendChild(elt);
365 ns.addElement(file);
366 } else if (rec) {
367 appendFiles(doc, ns, f.listFiles(ff), ff, rec);
368 }
369 }
370 }
371 }
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