1 | /* GIO - GLib Input, Output and Streaming Library |
2 | * |
3 | * Copyright (C) 2006-2007 Red Hat, Inc. |
4 | * |
5 | * This library is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU Lesser General Public |
7 | * License as published by the Free Software Foundation; either |
8 | * version 2.1 of the License, or (at your option) any later version. |
9 | * |
10 | * This library is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | * Lesser General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU Lesser General |
16 | * Public License along with this library; if not, see <http://www.gnu.org/licenses/>. |
17 | * |
18 | * Author: Alexander Larsson <alexl@redhat.com> |
19 | */ |
20 | |
21 | #include "config.h" |
22 | |
23 | #include <string.h> |
24 | |
25 | #include "gfileattribute.h" |
26 | #include "gfileattribute-priv.h" |
27 | #include <glib-object.h> |
28 | #include "glibintl.h" |
29 | |
30 | |
31 | /** |
32 | * SECTION:gfileattribute |
33 | * @short_description: Key-Value Paired File Attributes |
34 | * @include: gio/gio.h |
35 | * @see_also: #GFile, #GFileInfo |
36 | * |
37 | * File attributes in GIO consist of a list of key-value pairs. |
38 | * |
39 | * Keys are strings that contain a key namespace and a key name, separated |
40 | * by a colon, e.g. "namespace::keyname". Namespaces are included to sort |
41 | * key-value pairs by namespaces for relevance. Keys can be retrieved |
42 | * using wildcards, e.g. "standard::*" will return all of the keys in the |
43 | * "standard" namespace. |
44 | * |
45 | * The list of possible attributes for a filesystem (pointed to by a #GFile) is |
46 | * available as a #GFileAttributeInfoList. This list is queryable by key names |
47 | * as indicated earlier. |
48 | * |
49 | * Information is stored within the list in #GFileAttributeInfo structures. |
50 | * The info structure can store different types, listed in the enum |
51 | * #GFileAttributeType. Upon creation of a #GFileAttributeInfo, the type will |
52 | * be set to %G_FILE_ATTRIBUTE_TYPE_INVALID. |
53 | * |
54 | * Classes that implement #GFileIface will create a #GFileAttributeInfoList and |
55 | * install default keys and values for their given file system, architecture, |
56 | * and other possible implementation details (e.g., on a UNIX system, a file |
57 | * attribute key will be registered for the user id for a given file). |
58 | * |
59 | * ## Default Namespaces |
60 | * |
61 | * - `"standard"`: The "Standard" namespace. General file information that |
62 | * any application may need should be put in this namespace. Examples |
63 | * include the file's name, type, and size. |
64 | * - `"etag`: The [Entity Tag][gfile-etag] namespace. Currently, the only key |
65 | * in this namespace is "value", which contains the value of the current |
66 | * entity tag. |
67 | * - `"id"`: The "Identification" namespace. This namespace is used by file |
68 | * managers and applications that list directories to check for loops and |
69 | * to uniquely identify files. |
70 | * - `"access"`: The "Access" namespace. Used to check if a user has the |
71 | * proper privileges to access files and perform file operations. Keys in |
72 | * this namespace are made to be generic and easily understood, e.g. the |
73 | * "can_read" key is %TRUE if the current user has permission to read the |
74 | * file. UNIX permissions and NTFS ACLs in Windows should be mapped to |
75 | * these values. |
76 | * - `"mountable"`: The "Mountable" namespace. Includes simple boolean keys |
77 | * for checking if a file or path supports mount operations, e.g. mount, |
78 | * unmount, eject. These are used for files of type %G_FILE_TYPE_MOUNTABLE. |
79 | * - `"time"`: The "Time" namespace. Includes file access, changed, created |
80 | * times. |
81 | * - `"unix"`: The "Unix" namespace. Includes UNIX-specific information and |
82 | * may not be available for all files. Examples include the UNIX "UID", |
83 | * "GID", etc. |
84 | * - `"dos"`: The "DOS" namespace. Includes DOS-specific information and may |
85 | * not be available for all files. Examples include "is_system" for checking |
86 | * if a file is marked as a system file, and "is_archive" for checking if a |
87 | * file is marked as an archive file. |
88 | * - `"owner"`: The "Owner" namespace. Includes information about who owns a |
89 | * file. May not be available for all file systems. Examples include "user" |
90 | * for getting the user name of the file owner. This information is often |
91 | * mapped from some backend specific data such as a UNIX UID. |
92 | * - `"thumbnail"`: The "Thumbnail" namespace. Includes information about file |
93 | * thumbnails and their location within the file system. Examples of keys in |
94 | * this namespace include "path" to get the location of a thumbnail, "failed" |
95 | * to check if thumbnailing of the file failed, and "is-valid" to check if |
96 | * the thumbnail is outdated. |
97 | * - `"filesystem"`: The "Filesystem" namespace. Gets information about the |
98 | * file system where a file is located, such as its type, how much space is |
99 | * left available, and the overall size of the file system. |
100 | * - `"gvfs"`: The "GVFS" namespace. Keys in this namespace contain information |
101 | * about the current GVFS backend in use. |
102 | * - `"xattr"`: The "xattr" namespace. Gets information about extended |
103 | * user attributes. See attr(5). The "user." prefix of the extended user |
104 | * attribute name is stripped away when constructing keys in this namespace, |
105 | * e.g. "xattr::mime_type" for the extended attribute with the name |
106 | * "user.mime_type". Note that this information is only available if |
107 | * GLib has been built with extended attribute support. |
108 | * - `"xattr-sys"`: The "xattr-sys" namespace. Gets information about |
109 | * extended attributes which are not user-specific. See attr(5). Note |
110 | * that this information is only available if GLib has been built with |
111 | * extended attribute support. |
112 | * - `"selinux"`: The "SELinux" namespace. Includes information about the |
113 | * SELinux context of files. Note that this information is only available |
114 | * if GLib has been built with SELinux support. |
115 | * |
116 | * Please note that these are not all of the possible namespaces. |
117 | * More namespaces can be added from GIO modules or by individual applications. |
118 | * For more information about writing GIO modules, see #GIOModule. |
119 | * |
120 | * <!-- TODO: Implementation note about using extended attributes on supported |
121 | * file systems --> |
122 | * |
123 | * ## Default Keys |
124 | * |
125 | * For a list of the built-in keys and their types, see the |
126 | * [GFileInfo][GFileInfo] documentation. |
127 | * |
128 | * Note that there are no predefined keys in the "xattr" and "xattr-sys" |
129 | * namespaces. Keys for the "xattr" namespace are constructed by stripping |
130 | * away the "user." prefix from the extended user attribute, and prepending |
131 | * "xattr::". Keys for the "xattr-sys" namespace are constructed by |
132 | * concatenating "xattr-sys::" with the extended attribute name. All extended |
133 | * attribute values are returned as hex-encoded strings in which bytes outside |
134 | * the ASCII range are encoded as escape sequences of the form \x`nn` |
135 | * where `nn` is a 2-digit hexadecimal number. |
136 | */ |
137 | |
138 | /** |
139 | * _g_file_attribute_value_free: |
140 | * @attr: a #GFileAttributeValue. |
141 | * |
142 | * Frees the memory used by @attr. |
143 | * |
144 | **/ |
145 | void |
146 | _g_file_attribute_value_free (GFileAttributeValue *attr) |
147 | { |
148 | g_return_if_fail (attr != NULL); |
149 | |
150 | _g_file_attribute_value_clear (attr); |
151 | g_free (mem: attr); |
152 | } |
153 | |
154 | /** |
155 | * _g_file_attribute_value_clear: |
156 | * @attr: a #GFileAttributeValue. |
157 | * |
158 | * Clears the value of @attr and sets its type to |
159 | * %G_FILE_ATTRIBUTE_TYPE_INVALID. |
160 | * |
161 | **/ |
162 | void |
163 | _g_file_attribute_value_clear (GFileAttributeValue *attr) |
164 | { |
165 | g_return_if_fail (attr != NULL); |
166 | |
167 | if (attr->type == G_FILE_ATTRIBUTE_TYPE_STRING || |
168 | attr->type == G_FILE_ATTRIBUTE_TYPE_BYTE_STRING) |
169 | g_free (mem: attr->u.string); |
170 | |
171 | if (attr->type == G_FILE_ATTRIBUTE_TYPE_STRINGV) |
172 | g_strfreev (str_array: attr->u.stringv); |
173 | |
174 | if (attr->type == G_FILE_ATTRIBUTE_TYPE_OBJECT && |
175 | attr->u.obj != NULL) |
176 | g_object_unref (object: attr->u.obj); |
177 | |
178 | attr->type = G_FILE_ATTRIBUTE_TYPE_INVALID; |
179 | } |
180 | |
181 | /** |
182 | * g_file_attribute_value_set: |
183 | * @attr: a #GFileAttributeValue to set the value in. |
184 | * @new_value: a #GFileAttributeValue to get the value from. |
185 | * |
186 | * Sets an attribute's value from another attribute. |
187 | **/ |
188 | void |
189 | _g_file_attribute_value_set (GFileAttributeValue *attr, |
190 | const GFileAttributeValue *new_value) |
191 | { |
192 | g_return_if_fail (attr != NULL); |
193 | g_return_if_fail (new_value != NULL); |
194 | |
195 | _g_file_attribute_value_clear (attr); |
196 | *attr = *new_value; |
197 | |
198 | if (attr->type == G_FILE_ATTRIBUTE_TYPE_STRING || |
199 | attr->type == G_FILE_ATTRIBUTE_TYPE_BYTE_STRING) |
200 | attr->u.string = g_strdup (str: attr->u.string); |
201 | |
202 | if (attr->type == G_FILE_ATTRIBUTE_TYPE_STRINGV) |
203 | attr->u.stringv = g_strdupv (str_array: attr->u.stringv); |
204 | |
205 | if (attr->type == G_FILE_ATTRIBUTE_TYPE_OBJECT && |
206 | attr->u.obj != NULL) |
207 | g_object_ref (attr->u.obj); |
208 | } |
209 | |
210 | /** |
211 | * _g_file_attribute_value_new: |
212 | * |
213 | * Creates a new file attribute. |
214 | * |
215 | * Returns: a #GFileAttributeValue. |
216 | **/ |
217 | GFileAttributeValue * |
218 | _g_file_attribute_value_new (void) |
219 | { |
220 | GFileAttributeValue *attr; |
221 | |
222 | attr = g_new (GFileAttributeValue, 1); |
223 | attr->type = G_FILE_ATTRIBUTE_TYPE_INVALID; |
224 | return attr; |
225 | } |
226 | |
227 | gpointer |
228 | _g_file_attribute_value_peek_as_pointer (GFileAttributeValue *attr) |
229 | { |
230 | switch (attr->type) { |
231 | case G_FILE_ATTRIBUTE_TYPE_STRING: |
232 | case G_FILE_ATTRIBUTE_TYPE_BYTE_STRING: |
233 | return attr->u.string; |
234 | case G_FILE_ATTRIBUTE_TYPE_STRINGV: |
235 | return attr->u.stringv; |
236 | case G_FILE_ATTRIBUTE_TYPE_OBJECT: |
237 | return attr->u.obj; |
238 | default: |
239 | return (gpointer) &attr->u; |
240 | } |
241 | } |
242 | |
243 | /** |
244 | * g_file_attribute_value_dup: |
245 | * @other: a #GFileAttributeValue to duplicate. |
246 | * |
247 | * Duplicates a file attribute. |
248 | * |
249 | * Returns: a duplicate of the @other. |
250 | **/ |
251 | GFileAttributeValue * |
252 | _g_file_attribute_value_dup (const GFileAttributeValue *other) |
253 | { |
254 | GFileAttributeValue *attr; |
255 | |
256 | g_return_val_if_fail (other != NULL, NULL); |
257 | |
258 | attr = g_new (GFileAttributeValue, 1); |
259 | attr->type = G_FILE_ATTRIBUTE_TYPE_INVALID; |
260 | _g_file_attribute_value_set (attr, new_value: other); |
261 | return attr; |
262 | } |
263 | |
264 | G_DEFINE_BOXED_TYPE (GFileAttributeInfoList, g_file_attribute_info_list, |
265 | g_file_attribute_info_list_dup, |
266 | g_file_attribute_info_list_unref) |
267 | |
268 | static gboolean |
269 | valid_char (char c) |
270 | { |
271 | return c >= 32 && c <= 126 && c != '\\'; |
272 | } |
273 | |
274 | static char * |
275 | escape_byte_string (const char *str) |
276 | { |
277 | size_t i, len; |
278 | int num_invalid; |
279 | char *escaped_val, *p; |
280 | unsigned char c; |
281 | const char hex_digits[] = "0123456789abcdef" ; |
282 | |
283 | len = strlen (s: str); |
284 | |
285 | num_invalid = 0; |
286 | for (i = 0; i < len; i++) |
287 | { |
288 | if (!valid_char (c: str[i])) |
289 | num_invalid++; |
290 | } |
291 | |
292 | if (num_invalid == 0) |
293 | return g_strdup (str); |
294 | else |
295 | { |
296 | escaped_val = g_malloc (n_bytes: len + num_invalid*3 + 1); |
297 | |
298 | p = escaped_val; |
299 | for (i = 0; i < len; i++) |
300 | { |
301 | c = str[i]; |
302 | if (valid_char (c)) |
303 | *p++ = c; |
304 | else |
305 | { |
306 | *p++ = '\\'; |
307 | *p++ = 'x'; |
308 | *p++ = hex_digits[(c >> 4) & 0xf]; |
309 | *p++ = hex_digits[c & 0xf]; |
310 | } |
311 | } |
312 | *p++ = 0; |
313 | return escaped_val; |
314 | } |
315 | } |
316 | |
317 | /** |
318 | * _g_file_attribute_value_as_string: |
319 | * @attr: a #GFileAttributeValue. |
320 | * |
321 | * Converts a #GFileAttributeValue to a string for display. |
322 | * The returned string should be freed when no longer needed. |
323 | * |
324 | * Returns: a string from the @attr, %NULL on error, or "<invalid>" |
325 | * if @attr is of type %G_FILE_ATTRIBUTE_TYPE_INVALID. |
326 | */ |
327 | char * |
328 | _g_file_attribute_value_as_string (const GFileAttributeValue *attr) |
329 | { |
330 | GString *s; |
331 | int i; |
332 | char *str; |
333 | |
334 | g_return_val_if_fail (attr != NULL, NULL); |
335 | |
336 | switch (attr->type) |
337 | { |
338 | case G_FILE_ATTRIBUTE_TYPE_STRING: |
339 | str = g_strdup (str: attr->u.string); |
340 | break; |
341 | case G_FILE_ATTRIBUTE_TYPE_STRINGV: |
342 | s = g_string_new (init: "[" ); |
343 | for (i = 0; attr->u.stringv[i] != NULL; i++) |
344 | { |
345 | g_string_append (string: s, val: attr->u.stringv[i]); |
346 | if (attr->u.stringv[i+1] != NULL) |
347 | g_string_append (string: s, val: ", " ); |
348 | } |
349 | g_string_append (string: s, val: "]" ); |
350 | str = g_string_free (string: s, FALSE); |
351 | break; |
352 | case G_FILE_ATTRIBUTE_TYPE_BYTE_STRING: |
353 | str = escape_byte_string (str: attr->u.string); |
354 | break; |
355 | case G_FILE_ATTRIBUTE_TYPE_BOOLEAN: |
356 | str = g_strdup_printf (format: "%s" , attr->u.boolean?"TRUE" :"FALSE" ); |
357 | break; |
358 | case G_FILE_ATTRIBUTE_TYPE_UINT32: |
359 | str = g_strdup_printf (format: "%u" , (unsigned int)attr->u.uint32); |
360 | break; |
361 | case G_FILE_ATTRIBUTE_TYPE_INT32: |
362 | str = g_strdup_printf (format: "%i" , (int)attr->u.int32); |
363 | break; |
364 | case G_FILE_ATTRIBUTE_TYPE_UINT64: |
365 | str = g_strdup_printf (format: "%" G_GUINT64_FORMAT, attr->u.uint64); |
366 | break; |
367 | case G_FILE_ATTRIBUTE_TYPE_INT64: |
368 | str = g_strdup_printf (format: "%" G_GINT64_FORMAT, attr->u.int64); |
369 | break; |
370 | case G_FILE_ATTRIBUTE_TYPE_OBJECT: |
371 | str = g_strdup_printf (format: "%s:%p" , g_type_name_from_instance |
372 | (instance: (GTypeInstance *) attr->u.obj), |
373 | attr->u.obj); |
374 | break; |
375 | case G_FILE_ATTRIBUTE_TYPE_INVALID: |
376 | str = g_strdup (str: "<unset>" ); |
377 | break; |
378 | default: |
379 | g_warning ("Invalid type in GFileInfo attribute" ); |
380 | str = g_strdup (str: "<invalid>" ); |
381 | break; |
382 | } |
383 | |
384 | return str; |
385 | } |
386 | |
387 | /** |
388 | * _g_file_attribute_value_get_string: |
389 | * @attr: a #GFileAttributeValue. |
390 | * |
391 | * Gets the string from a file attribute value. If the value is not the |
392 | * right type then %NULL will be returned. |
393 | * |
394 | * Returns: the UTF-8 string value contained within the attribute, or %NULL. |
395 | */ |
396 | const char * |
397 | _g_file_attribute_value_get_string (const GFileAttributeValue *attr) |
398 | { |
399 | if (attr == NULL) |
400 | return NULL; |
401 | |
402 | g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_STRING, NULL); |
403 | |
404 | return attr->u.string; |
405 | } |
406 | |
407 | /** |
408 | * _g_file_attribute_value_get_byte_string: |
409 | * @attr: a #GFileAttributeValue. |
410 | * |
411 | * Gets the byte string from a file attribute value. If the value is not the |
412 | * right type then %NULL will be returned. |
413 | * |
414 | * Returns: the byte string contained within the attribute or %NULL. |
415 | */ |
416 | const char * |
417 | _g_file_attribute_value_get_byte_string (const GFileAttributeValue *attr) |
418 | { |
419 | if (attr == NULL) |
420 | return NULL; |
421 | |
422 | g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_BYTE_STRING, NULL); |
423 | |
424 | return attr->u.string; |
425 | } |
426 | |
427 | char ** |
428 | _g_file_attribute_value_get_stringv (const GFileAttributeValue *attr) |
429 | { |
430 | if (attr == NULL) |
431 | return NULL; |
432 | |
433 | g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_STRINGV, NULL); |
434 | |
435 | return attr->u.stringv; |
436 | } |
437 | |
438 | /** |
439 | * _g_file_attribute_value_get_boolean: |
440 | * @attr: a #GFileAttributeValue. |
441 | * |
442 | * Gets the boolean value from a file attribute value. If the value is not the |
443 | * right type then %FALSE will be returned. |
444 | * |
445 | * Returns: the boolean value contained within the attribute, or %FALSE. |
446 | */ |
447 | gboolean |
448 | _g_file_attribute_value_get_boolean (const GFileAttributeValue *attr) |
449 | { |
450 | if (attr == NULL) |
451 | return FALSE; |
452 | |
453 | g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_BOOLEAN, FALSE); |
454 | |
455 | return attr->u.boolean; |
456 | } |
457 | |
458 | /** |
459 | * _g_file_attribute_value_get_uint32: |
460 | * @attr: a #GFileAttributeValue. |
461 | * |
462 | * Gets the unsigned 32-bit integer from a file attribute value. If the value |
463 | * is not the right type then 0 will be returned. |
464 | * |
465 | * Returns: the unsigned 32-bit integer from the attribute, or 0. |
466 | */ |
467 | guint32 |
468 | _g_file_attribute_value_get_uint32 (const GFileAttributeValue *attr) |
469 | { |
470 | if (attr == NULL) |
471 | return 0; |
472 | |
473 | g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_UINT32, 0); |
474 | |
475 | return attr->u.uint32; |
476 | } |
477 | |
478 | /** |
479 | * _g_file_attribute_value_get_int32: |
480 | * @attr: a #GFileAttributeValue. |
481 | * |
482 | * Gets the signed 32-bit integer from a file attribute value. If the value |
483 | * is not the right type then 0 will be returned. |
484 | * |
485 | * Returns: the signed 32-bit integer from the attribute, or 0. |
486 | */ |
487 | gint32 |
488 | _g_file_attribute_value_get_int32 (const GFileAttributeValue *attr) |
489 | { |
490 | if (attr == NULL) |
491 | return 0; |
492 | |
493 | g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_INT32, 0); |
494 | |
495 | return attr->u.int32; |
496 | } |
497 | |
498 | /** |
499 | * _g_file_attribute_value_get_uint64: |
500 | * @attr: a #GFileAttributeValue. |
501 | * |
502 | * Gets the unsigned 64-bit integer from a file attribute value. If the value |
503 | * is not the right type then 0 will be returned. |
504 | * |
505 | * Returns: the unsigned 64-bit integer from the attribute, or 0. |
506 | */ |
507 | guint64 |
508 | _g_file_attribute_value_get_uint64 (const GFileAttributeValue *attr) |
509 | { |
510 | if (attr == NULL) |
511 | return 0; |
512 | |
513 | g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_UINT64, 0); |
514 | |
515 | return attr->u.uint64; |
516 | } |
517 | |
518 | /** |
519 | * _g_file_attribute_value_get_int64: |
520 | * @attr: a #GFileAttributeValue. |
521 | * |
522 | * Gets the signed 64-bit integer from a file attribute value. If the value |
523 | * is not the right type then 0 will be returned. |
524 | * |
525 | * Returns: the signed 64-bit integer from the attribute, or 0. |
526 | */ |
527 | gint64 |
528 | _g_file_attribute_value_get_int64 (const GFileAttributeValue *attr) |
529 | { |
530 | if (attr == NULL) |
531 | return 0; |
532 | |
533 | g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_INT64, 0); |
534 | |
535 | return attr->u.int64; |
536 | } |
537 | |
538 | /** |
539 | * _g_file_attribute_value_get_object: |
540 | * @attr: a #GFileAttributeValue. |
541 | * |
542 | * Gets the GObject from a file attribute value. If the value |
543 | * is not the right type then %NULL will be returned. |
544 | * |
545 | * Returns: the GObject from the attribute, or %NULL. |
546 | **/ |
547 | GObject * |
548 | _g_file_attribute_value_get_object (const GFileAttributeValue *attr) |
549 | { |
550 | if (attr == NULL) |
551 | return NULL; |
552 | |
553 | g_return_val_if_fail (attr->type == G_FILE_ATTRIBUTE_TYPE_OBJECT, NULL); |
554 | |
555 | return attr->u.obj; |
556 | } |
557 | |
558 | |
559 | void |
560 | _g_file_attribute_value_set_from_pointer (GFileAttributeValue *value, |
561 | GFileAttributeType type, |
562 | gpointer value_p, |
563 | gboolean dup) |
564 | { |
565 | _g_file_attribute_value_clear (attr: value); |
566 | value->type = type; |
567 | switch (type) |
568 | { |
569 | case G_FILE_ATTRIBUTE_TYPE_STRING: |
570 | case G_FILE_ATTRIBUTE_TYPE_BYTE_STRING: |
571 | if (dup) |
572 | value->u.string = g_strdup (str: value_p); |
573 | else |
574 | value->u.string = value_p; |
575 | break; |
576 | |
577 | case G_FILE_ATTRIBUTE_TYPE_STRINGV: |
578 | if (dup) |
579 | value->u.stringv = g_strdupv (str_array: value_p); |
580 | else |
581 | value->u.stringv = value_p; |
582 | break; |
583 | |
584 | case G_FILE_ATTRIBUTE_TYPE_OBJECT: |
585 | if (dup) |
586 | value->u.obj = g_object_ref (value_p); |
587 | else |
588 | value->u.obj = value_p; |
589 | break; |
590 | |
591 | case G_FILE_ATTRIBUTE_TYPE_BOOLEAN: |
592 | value->u.boolean = *(gboolean *)value_p; |
593 | break; |
594 | |
595 | case G_FILE_ATTRIBUTE_TYPE_UINT32: |
596 | value->u.uint32 = *(guint32 *)value_p; |
597 | break; |
598 | |
599 | case G_FILE_ATTRIBUTE_TYPE_INT32: |
600 | value->u.int32 = *(gint32 *)value_p; |
601 | break; |
602 | |
603 | case G_FILE_ATTRIBUTE_TYPE_UINT64: |
604 | value->u.uint64 = *(guint64 *)value_p; |
605 | break; |
606 | |
607 | case G_FILE_ATTRIBUTE_TYPE_INT64: |
608 | value->u.int64 = *(gint64 *)value_p; |
609 | break; |
610 | |
611 | case G_FILE_ATTRIBUTE_TYPE_INVALID: |
612 | break; |
613 | |
614 | default: |
615 | g_warning ("Unknown type specified in g_file_info_set_attribute" ); |
616 | break; |
617 | } |
618 | } |
619 | |
620 | /** |
621 | * _g_file_attribute_value_set_string: |
622 | * @attr: a #GFileAttributeValue. |
623 | * @string: a UTF-8 string to set within the type. |
624 | * |
625 | * Sets the attribute value to a given UTF-8 string. |
626 | */ |
627 | void |
628 | _g_file_attribute_value_set_string (GFileAttributeValue *attr, |
629 | const char *string) |
630 | { |
631 | g_return_if_fail (attr != NULL); |
632 | g_return_if_fail (string != NULL); |
633 | |
634 | _g_file_attribute_value_clear (attr); |
635 | attr->type = G_FILE_ATTRIBUTE_TYPE_STRING; |
636 | attr->u.string = g_strdup (str: string); |
637 | } |
638 | |
639 | /** |
640 | * _g_file_attribute_value_set_byte_string: |
641 | * @attr: a #GFileAttributeValue. |
642 | * @string: a byte string to set within the type. |
643 | * |
644 | * Sets the attribute value to a given byte string. |
645 | */ |
646 | void |
647 | _g_file_attribute_value_set_byte_string (GFileAttributeValue *attr, |
648 | const char *string) |
649 | { |
650 | g_return_if_fail (attr != NULL); |
651 | g_return_if_fail (string != NULL); |
652 | |
653 | _g_file_attribute_value_clear (attr); |
654 | attr->type = G_FILE_ATTRIBUTE_TYPE_BYTE_STRING; |
655 | attr->u.string = g_strdup (str: string); |
656 | } |
657 | |
658 | void |
659 | _g_file_attribute_value_set_stringv (GFileAttributeValue *attr, |
660 | char **value) |
661 | { |
662 | g_return_if_fail (attr != NULL); |
663 | g_return_if_fail (value != NULL); |
664 | |
665 | _g_file_attribute_value_clear (attr); |
666 | attr->type = G_FILE_ATTRIBUTE_TYPE_STRINGV; |
667 | attr->u.stringv = g_strdupv (str_array: value); |
668 | } |
669 | |
670 | |
671 | /** |
672 | * _g_file_attribute_value_set_boolean: |
673 | * @attr: a #GFileAttributeValue. |
674 | * @value: a #gboolean to set within the type. |
675 | * |
676 | * Sets the attribute value to the given boolean value. |
677 | */ |
678 | void |
679 | _g_file_attribute_value_set_boolean (GFileAttributeValue *attr, |
680 | gboolean value) |
681 | { |
682 | g_return_if_fail (attr != NULL); |
683 | |
684 | _g_file_attribute_value_clear (attr); |
685 | attr->type = G_FILE_ATTRIBUTE_TYPE_BOOLEAN; |
686 | attr->u.boolean = !!value; |
687 | } |
688 | |
689 | /** |
690 | * _g_file_attribute_value_set_uint32: |
691 | * @attr: a #GFileAttributeValue. |
692 | * @value: a #guint32 to set within the type. |
693 | * |
694 | * Sets the attribute value to the given unsigned 32-bit integer. |
695 | */ |
696 | void |
697 | _g_file_attribute_value_set_uint32 (GFileAttributeValue *attr, |
698 | guint32 value) |
699 | { |
700 | g_return_if_fail (attr != NULL); |
701 | |
702 | _g_file_attribute_value_clear (attr); |
703 | attr->type = G_FILE_ATTRIBUTE_TYPE_UINT32; |
704 | attr->u.uint32 = value; |
705 | } |
706 | |
707 | /** |
708 | * _g_file_attribute_value_set_int32: |
709 | * @attr: a #GFileAttributeValue. |
710 | * @value: a #gint32 to set within the type. |
711 | * |
712 | * Sets the attribute value to the given signed 32-bit integer. |
713 | */ |
714 | void |
715 | _g_file_attribute_value_set_int32 (GFileAttributeValue *attr, |
716 | gint32 value) |
717 | { |
718 | g_return_if_fail (attr != NULL); |
719 | |
720 | _g_file_attribute_value_clear (attr); |
721 | attr->type = G_FILE_ATTRIBUTE_TYPE_INT32; |
722 | attr->u.int32 = value; |
723 | } |
724 | |
725 | /** |
726 | * _g_file_attribute_value_set_uint64: |
727 | * @attr: a #GFileAttributeValue. |
728 | * @value: a #guint64 to set within the type. |
729 | * |
730 | * Sets the attribute value to a given unsigned 64-bit integer. |
731 | */ |
732 | void |
733 | _g_file_attribute_value_set_uint64 (GFileAttributeValue *attr, |
734 | guint64 value) |
735 | { |
736 | g_return_if_fail (attr != NULL); |
737 | |
738 | _g_file_attribute_value_clear (attr); |
739 | attr->type = G_FILE_ATTRIBUTE_TYPE_UINT64; |
740 | attr->u.uint64 = value; |
741 | } |
742 | |
743 | /** |
744 | * _g_file_attribute_value_set_int64: |
745 | * @attr: a #GFileAttributeValue. |
746 | * @value: a #gint64 to set within the type. |
747 | * |
748 | * Sets the attribute value to a given signed 64-bit integer. |
749 | */ |
750 | void |
751 | _g_file_attribute_value_set_int64 (GFileAttributeValue *attr, |
752 | gint64 value) |
753 | { |
754 | g_return_if_fail (attr != NULL); |
755 | |
756 | _g_file_attribute_value_clear (attr); |
757 | attr->type = G_FILE_ATTRIBUTE_TYPE_INT64; |
758 | attr->u.int64 = value; |
759 | } |
760 | |
761 | /** |
762 | * _g_file_attribute_value_set_object: |
763 | * @attr: a #GFileAttributeValue. |
764 | * @obj: a #GObject. |
765 | * |
766 | * Sets the attribute to contain the value @obj. |
767 | * The @attr references the GObject internally. |
768 | */ |
769 | void |
770 | _g_file_attribute_value_set_object (GFileAttributeValue *attr, |
771 | GObject *obj) |
772 | { |
773 | g_return_if_fail (attr != NULL); |
774 | g_return_if_fail (obj != NULL); |
775 | |
776 | _g_file_attribute_value_clear (attr); |
777 | attr->type = G_FILE_ATTRIBUTE_TYPE_OBJECT; |
778 | attr->u.obj = g_object_ref (obj); |
779 | } |
780 | |
781 | typedef struct { |
782 | GFileAttributeInfoList public; |
783 | GArray *array; |
784 | int ref_count; |
785 | } GFileAttributeInfoListPriv; |
786 | |
787 | static void |
788 | list_update_public (GFileAttributeInfoListPriv *priv) |
789 | { |
790 | priv->public.infos = (GFileAttributeInfo *)priv->array->data; |
791 | priv->public.n_infos = priv->array->len; |
792 | } |
793 | |
794 | /** |
795 | * g_file_attribute_info_list_new: |
796 | * |
797 | * Creates a new file attribute info list. |
798 | * |
799 | * Returns: a #GFileAttributeInfoList. |
800 | */ |
801 | GFileAttributeInfoList * |
802 | g_file_attribute_info_list_new (void) |
803 | { |
804 | GFileAttributeInfoListPriv *priv; |
805 | |
806 | priv = g_new0 (GFileAttributeInfoListPriv, 1); |
807 | |
808 | priv->ref_count = 1; |
809 | priv->array = g_array_new (TRUE, FALSE, element_size: sizeof (GFileAttributeInfo)); |
810 | |
811 | list_update_public (priv); |
812 | |
813 | return (GFileAttributeInfoList *)priv; |
814 | } |
815 | |
816 | /** |
817 | * g_file_attribute_info_list_dup: |
818 | * @list: a #GFileAttributeInfoList to duplicate. |
819 | * |
820 | * Makes a duplicate of a file attribute info list. |
821 | * |
822 | * Returns: a copy of the given @list. |
823 | */ |
824 | GFileAttributeInfoList * |
825 | g_file_attribute_info_list_dup (GFileAttributeInfoList *list) |
826 | { |
827 | GFileAttributeInfoListPriv *new; |
828 | int i; |
829 | |
830 | g_return_val_if_fail (list != NULL, NULL); |
831 | |
832 | new = g_new0 (GFileAttributeInfoListPriv, 1); |
833 | new->ref_count = 1; |
834 | new->array = g_array_new (TRUE, FALSE, element_size: sizeof (GFileAttributeInfo)); |
835 | |
836 | g_array_set_size (array: new->array, length: list->n_infos); |
837 | list_update_public (priv: new); |
838 | for (i = 0; i < list->n_infos; i++) |
839 | { |
840 | new->public.infos[i].name = g_strdup (str: list->infos[i].name); |
841 | new->public.infos[i].type = list->infos[i].type; |
842 | new->public.infos[i].flags = list->infos[i].flags; |
843 | } |
844 | |
845 | return (GFileAttributeInfoList *)new; |
846 | } |
847 | |
848 | /** |
849 | * g_file_attribute_info_list_ref: |
850 | * @list: a #GFileAttributeInfoList to reference. |
851 | * |
852 | * References a file attribute info list. |
853 | * |
854 | * Returns: #GFileAttributeInfoList or %NULL on error. |
855 | */ |
856 | GFileAttributeInfoList * |
857 | g_file_attribute_info_list_ref (GFileAttributeInfoList *list) |
858 | { |
859 | GFileAttributeInfoListPriv *priv = (GFileAttributeInfoListPriv *)list; |
860 | |
861 | g_return_val_if_fail (list != NULL, NULL); |
862 | g_return_val_if_fail (priv->ref_count > 0, NULL); |
863 | |
864 | g_atomic_int_inc (&priv->ref_count); |
865 | |
866 | return list; |
867 | } |
868 | |
869 | /** |
870 | * g_file_attribute_info_list_unref: |
871 | * @list: The #GFileAttributeInfoList to unreference. |
872 | * |
873 | * Removes a reference from the given @list. If the reference count |
874 | * falls to zero, the @list is deleted. |
875 | */ |
876 | void |
877 | g_file_attribute_info_list_unref (GFileAttributeInfoList *list) |
878 | { |
879 | GFileAttributeInfoListPriv *priv = (GFileAttributeInfoListPriv *)list; |
880 | int i; |
881 | |
882 | g_return_if_fail (list != NULL); |
883 | g_return_if_fail (priv->ref_count > 0); |
884 | |
885 | if (g_atomic_int_dec_and_test (&priv->ref_count)) |
886 | { |
887 | for (i = 0; i < list->n_infos; i++) |
888 | g_free (mem: list->infos[i].name); |
889 | g_array_free (array: priv->array, TRUE); |
890 | g_free (mem: list); |
891 | } |
892 | } |
893 | |
894 | static int |
895 | g_file_attribute_info_list_bsearch (GFileAttributeInfoList *list, |
896 | const char *name) |
897 | { |
898 | int start, end, mid; |
899 | |
900 | start = 0; |
901 | end = list->n_infos; |
902 | |
903 | while (start != end) |
904 | { |
905 | mid = start + (end - start) / 2; |
906 | |
907 | if (strcmp (s1: name, s2: list->infos[mid].name) < 0) |
908 | end = mid; |
909 | else if (strcmp (s1: name, s2: list->infos[mid].name) > 0) |
910 | start = mid + 1; |
911 | else |
912 | return mid; |
913 | } |
914 | return start; |
915 | } |
916 | |
917 | /** |
918 | * g_file_attribute_info_list_lookup: |
919 | * @list: a #GFileAttributeInfoList. |
920 | * @name: the name of the attribute to look up. |
921 | * |
922 | * Gets the file attribute with the name @name from @list. |
923 | * |
924 | * Returns: a #GFileAttributeInfo for the @name, or %NULL if an |
925 | * attribute isn't found. |
926 | */ |
927 | const GFileAttributeInfo * |
928 | g_file_attribute_info_list_lookup (GFileAttributeInfoList *list, |
929 | const char *name) |
930 | { |
931 | int i; |
932 | |
933 | g_return_val_if_fail (list != NULL, NULL); |
934 | g_return_val_if_fail (name != NULL, NULL); |
935 | |
936 | i = g_file_attribute_info_list_bsearch (list, name); |
937 | |
938 | if (i < list->n_infos && strcmp (s1: list->infos[i].name, s2: name) == 0) |
939 | return &list->infos[i]; |
940 | |
941 | return NULL; |
942 | } |
943 | |
944 | /** |
945 | * g_file_attribute_info_list_add: |
946 | * @list: a #GFileAttributeInfoList. |
947 | * @name: the name of the attribute to add. |
948 | * @type: the #GFileAttributeType for the attribute. |
949 | * @flags: #GFileAttributeInfoFlags for the attribute. |
950 | * |
951 | * Adds a new attribute with @name to the @list, setting |
952 | * its @type and @flags. |
953 | */ |
954 | void |
955 | g_file_attribute_info_list_add (GFileAttributeInfoList *list, |
956 | const char *name, |
957 | GFileAttributeType type, |
958 | GFileAttributeInfoFlags flags) |
959 | { |
960 | GFileAttributeInfoListPriv *priv = (GFileAttributeInfoListPriv *)list; |
961 | GFileAttributeInfo info; |
962 | int i; |
963 | |
964 | g_return_if_fail (list != NULL); |
965 | g_return_if_fail (name != NULL); |
966 | |
967 | i = g_file_attribute_info_list_bsearch (list, name); |
968 | |
969 | if (i < list->n_infos && strcmp (s1: list->infos[i].name, s2: name) == 0) |
970 | { |
971 | list->infos[i].type = type; |
972 | return; |
973 | } |
974 | |
975 | info.name = g_strdup (str: name); |
976 | info.type = type; |
977 | info.flags = flags; |
978 | g_array_insert_vals (array: priv->array, index_: i, data: &info, len: 1); |
979 | |
980 | list_update_public (priv); |
981 | } |
982 | |