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129 | .\" ======================================================================== |
130 | .\" |
131 | .IX Title "Template::Plugin::Directory 3" |
132 | .TH Template::Plugin::Directory 3 "2008-11-13" "perl v5.8.7" "User Contributed Perl Documentation" |
133 | .SH "NAME" |
134 | Template::Plugin::Directory \- Plugin for generating directory listings |
135 | .SH "SYNOPSIS" |
136 | .IX Header "SYNOPSIS" |
137 | .Vb 1 |
138 | \& [% USE dir = Directory(dirpath) %] |
139 | .Ve |
140 | .PP |
141 | .Vb 4 |
142 | \& # files returns list of regular files |
143 | \& [% FOREACH file = dir.files %] |
144 | \& [% file.name %] [% file.path %] ... |
145 | \& [% END %] |
146 | .Ve |
147 | .PP |
148 | .Vb 4 |
149 | \& # dirs returns list of sub\-directories |
150 | \& [% FOREACH subdir = dir.dirs %] |
151 | \& [% subdir.name %] [% subdir.path %] ... |
152 | \& [% END %] |
153 | .Ve |
154 | .PP |
155 | .Vb 8 |
156 | \& # list returns both interleaved in order |
157 | \& [% FOREACH item = dir.list %] |
158 | \& [% IF item.isdir %] |
159 | \& Directory: [% item.name %] |
160 | \& [% ELSE %] |
161 | \& File: [% item.name %] |
162 | \& [% END %] |
163 | \& [% END %] |
164 | .Ve |
165 | .PP |
166 | .Vb 5 |
167 | \& # define a VIEW to display dirs/files |
168 | \& [% VIEW myview %] |
169 | \& [% BLOCK file %] |
170 | \& File: [% item.name %] |
171 | \& [% END %] |
172 | .Ve |
173 | .PP |
174 | .Vb 5 |
175 | \& [% BLOCK directory %] |
176 | \& Directory: [% item.name %] |
177 | \& [% item.content(myview) | indent \-%] |
178 | \& [% END %] |
179 | \& [% END %] |
180 | .Ve |
181 | .PP |
182 | .Vb 2 |
183 | \& # display directory content using view |
184 | \& [% myview.print(dir) %] |
185 | .Ve |
186 | .SH "DESCRIPTION" |
187 | .IX Header "DESCRIPTION" |
188 | This Template Toolkit plugin provides a simple interface to directory |
189 | listings. It is derived from the Template::Plugin::File module and |
190 | uses Template::Plugin::File object instances to represent files within |
191 | a directory. Sub-directories within a directory are represented by |
192 | further \f(CW\*(C`Template::Plugin::Directory\*(C'\fR instances. |
193 | .PP |
194 | The constructor expects a directory name as an argument. |
195 | .PP |
196 | .Vb 1 |
197 | \& [% USE dir = Directory('/tmp') %] |
198 | .Ve |
199 | .PP |
200 | It then provides access to the files and sub-directories contained within |
201 | the directory. |
202 | .PP |
203 | .Vb 4 |
204 | \& # regular files (not directories) |
205 | \& [% FOREACH file IN dir.files %] |
206 | \& [% file.name %] |
207 | \& [% END %] |
208 | .Ve |
209 | .PP |
210 | .Vb 4 |
211 | \& # directories only |
212 | \& [% FOREACH file IN dir.dirs %] |
213 | \& [% file.name %] |
214 | \& [% END %] |
215 | .Ve |
216 | .PP |
217 | .Vb 4 |
218 | \& # files and/or directories |
219 | \& [% FOREACH file IN dir.list %] |
220 | \& [% file.name %] ([% file.isdir ? 'directory' : 'file' %]) |
221 | \& [% END %] |
222 | .Ve |
223 | .PP |
224 | The plugin constructor will throw a \f(CW\*(C`Directory\*(C'\fR error if the specified |
225 | path does not exist, is not a directory or fails to \f(CW\*(C`stat()\*(C'\fR (see |
226 | Template::Plugin::File). Otherwise, it will scan the directory and |
227 | create lists named '\f(CW\*(C`files\*(C'\fR' containing files, '\f(CW\*(C`dirs\*(C'\fR' containing |
228 | directories and '\f(CW\*(C`list\*(C'\fR' containing both files and directories combined. |
229 | The \f(CW\*(C`nostat\*(C'\fR option can be set to disable all file/directory checks |
230 | and directory scanning. |
231 | .PP |
232 | Each file in the directory will be represented by a |
233 | Template::Plugin::File object instance, and each directory by another |
234 | \&\f(CW\*(C`Template::Plugin::Directory\*(C'\fR. If the \f(CW\*(C`recurse\*(C'\fR flag is set, then those |
235 | directories will contain further nested entries, and so on. With the |
236 | \&\f(CW\*(C`recurse\*(C'\fR flag unset, as it is by default, then each is just a place |
237 | marker for the directory and does not contain any further content |
238 | unless its \f(CW\*(C`scan()\*(C'\fR method is explicitly called. The \f(CW\*(C`isdir\*(C'\fR flag can |
239 | be tested against files and/or directories, returning true if the item |
240 | is a directory or false if it is a regular file. |
241 | .PP |
242 | .Vb 7 |
243 | \& [% FOREACH file = dir.list %] |
244 | \& [% IF file.isdir %] |
245 | \& * Directory: [% file.name %] |
246 | \& [% ELSE %] |
247 | \& * File: [% file.name %] |
248 | \& [% END %] |
249 | \& [% END %] |
250 | .Ve |
251 | .PP |
252 | This example shows how you might walk down a directory tree, displaying |
253 | content as you go. With the recurse flag disabled, as is the default, |
254 | we need to explicitly call the \f(CW\*(C`scan()\*(C'\fR method on each directory, to force |
255 | it to lookup files and further sub-directories contained within. |
256 | .PP |
257 | .Vb 3 |
258 | \& [% USE dir = Directory(dirpath) %] |
259 | \& * [% dir.path %] |
260 | \& [% INCLUDE showdir %] |
261 | .Ve |
262 | .PP |
263 | .Vb 11 |
264 | \& [% BLOCK showdir \-%] |
265 | \& [% FOREACH file = dir.list \-%] |
266 | \& [% IF file.isdir \-%] |
267 | \& * [% file.name %] |
268 | \& [% file.scan \-%] |
269 | \& [% INCLUDE showdir dir=file FILTER indent(4) \-%] |
270 | \& [% ELSE \-%] |
271 | \& \- [% f.name %] |
272 | \& [% END \-%] |
273 | \& [% END \-%] |
274 | \& [% END %] |
275 | .Ve |
276 | .PP |
277 | This example is adapted (with some re-formatting for clarity) from |
278 | a test in \fIt/directry.t\fR which produces the following output: |
279 | .PP |
280 | .Vb 10 |
281 | \& * test/dir |
282 | \& \- file1 |
283 | \& \- file2 |
284 | \& * sub_one |
285 | \& \- bar |
286 | \& \- foo |
287 | \& * sub_two |
288 | \& \- waz.html |
289 | \& \- wiz.html |
290 | \& \- xyzfile |
291 | .Ve |
292 | .PP |
293 | The \f(CW\*(C`recurse\*(C'\fR flag can be set (disabled by default) to cause the |
294 | constructor to automatically recurse down into all sub\-directories, |
295 | creating a new \f(CW\*(C`Template::Plugin::Directory\*(C'\fR object for each one and |
296 | filling it with any further content. In this case there is no need |
297 | to explicitly call the \f(CW\*(C`scan()\*(C'\fR method. |
298 | .PP |
299 | .Vb 2 |
300 | \& [% USE dir = Directory(dirpath, recurse=1) %] |
301 | \& ... |
302 | .Ve |
303 | .PP |
304 | .Vb 5 |
305 | \& [% IF file.isdir \-%] |
306 | \& * [% file.name %] |
307 | \& [% INCLUDE showdir dir=file FILTER indent(4) \-%] |
308 | \& [% ELSE \-%] |
309 | \& ... |
310 | .Ve |
311 | .PP |
312 | The directory plugin also provides support for views. A view can be defined as |
313 | a \f(CW\*(C`VIEW ... END\*(C'\fR block and should contain \f(CW\*(C`BLOCK\*(C'\fR definitions for files |
314 | ('\f(CW\*(C`file\*(C'\fR') and directories ('\f(CW\*(C`directory\*(C'\fR'). |
315 | .PP |
316 | .Vb 4 |
317 | \& [% VIEW myview %] |
318 | \& [% BLOCK file %] |
319 | \& \- [% item.name %] |
320 | \& [% END %] |
321 | .Ve |
322 | .PP |
323 | .Vb 5 |
324 | \& [% BLOCK directory %] |
325 | \& * [% item.name %] |
326 | \& [% item.content(myview) FILTER indent %] |
327 | \& [% END %] |
328 | \& [% END %] |
329 | .Ve |
330 | .PP |
331 | The view \f(CW\*(C`print()\*(C'\fR method can then be called, passing the |
332 | \&\f(CW\*(C`Directory\*(C'\fR object as an argument. |
333 | .PP |
334 | .Vb 2 |
335 | \& [% USE dir = Directory(dirpath, recurse=1) %] |
336 | \& [% myview.print(dir) %] |
337 | .Ve |
338 | .PP |
339 | When a directory is presented to a view, either as \f(CW\*(C`[% myview.print(dir) %]\*(C'\fR |
340 | or \f(CW\*(C`[% dir.present(view) %]\*(C'\fR, then the \f(CW\*(C`directory\*(C'\fR \f(CW\*(C`BLOCK\*(C'\fR within the |
341 | \&\f(CW\*(C`myview\*(C'\fR \f(CW\*(C`VIEW\*(C'\fR is processed. The \f(CW\*(C`item\*(C'\fR variable will be set to alias the |
342 | \&\f(CW\*(C`Directory\*(C'\fR object. |
343 | .PP |
344 | .Vb 4 |
345 | \& [% BLOCK directory %] |
346 | \& * [% item.name %] |
347 | \& [% item.content(myview) FILTER indent %] |
348 | \& [% END %] |
349 | .Ve |
350 | .PP |
351 | In this example, the directory name is first printed and the content(view) |
352 | method is then called to present each item within the directory to the view. |
353 | Further directories will be mapped to the \f(CW\*(C`directory\*(C'\fR block, and files will be |
354 | mapped to the \f(CW\*(C`file\*(C'\fR block. |
355 | .PP |
356 | With the recurse option disabled, as it is by default, the \f(CW\*(C`directory\*(C'\fR |
357 | block should explicitly call a \f(CW\*(C`scan()\*(C'\fR on each directory. |
358 | .PP |
359 | .Vb 4 |
360 | \& [% VIEW myview %] |
361 | \& [% BLOCK file %] |
362 | \& \- [% item.name %] |
363 | \& [% END %] |
364 | .Ve |
365 | .PP |
366 | .Vb 6 |
367 | \& [% BLOCK directory %] |
368 | \& * [% item.name %] |
369 | \& [% item.scan %] |
370 | \& [% item.content(myview) FILTER indent %] |
371 | \& [% END %] |
372 | \& [% END %] |
373 | .Ve |
374 | .PP |
375 | .Vb 2 |
376 | \& [% USE dir = Directory(dirpath) %] |
377 | \& [% myview.print(dir) %] |
378 | .Ve |
379 | .SH "AUTHORS" |
380 | .IX Header "AUTHORS" |
381 | Michael Stevens wrote the original Directory plugin on which this is based. |
382 | Andy Wardley split it into separate File and |
383 | Directory plugins, added some extra code and |
384 | documentation for \f(CW\*(C`VIEW\*(C'\fR support, and made a few other minor tweaks. |
385 | .SH "COPYRIGHT" |
386 | .IX Header "COPYRIGHT" |
387 | Copyright (C) 2000\-2007 Michael Stevens, Andy Wardley. |
388 | .PP |
389 | This module is free software; you can redistribute it and/or |
390 | modify it under the same terms as Perl itself. |
391 | .SH "SEE ALSO" |
392 | .IX Header "SEE ALSO" |
393 | Template::Plugin, Template::Plugin::File, Template::View |