2 * Copyright (C) 2007 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file blob.c Macros and functions for blob handling. */
17 static struct osl_column_description blob_cols[] = {
19 .storage_type = OSL_MAPPED_STORAGE,
20 .storage_flags = OSL_RBTREE | OSL_UNIQUE | OSL_FIXED_SIZE,
23 .compare_function = uint32_compare
26 .storage_type = OSL_MAPPED_STORAGE,
27 .storage_flags = OSL_RBTREE | OSL_UNIQUE,
29 .compare_function = string_compare
32 .storage_type = OSL_DISK_STORAGE,
38 /** \cond doxygen isn't smart enough to recognize these */
39 INIT_BLOB_TABLE(lyrics);
40 INIT_BLOB_TABLE(images);
41 INIT_BLOB_TABLE(moods);
42 INIT_BLOB_TABLE(playlists);
45 /** Flags that may be passed to the \p ls functions of each blob type. */
47 /** List both id and name. */
48 BLOB_LS_FLAG_LONG = 1,
49 /** Reverse sort order. */
50 BLOB_LS_FLAG_REVERSE = 2,
51 /** Sort by id instead of name. */
52 BLOB_LS_FLAG_SORT_BY_ID = 4,
55 /** Structure passed to the \p print_blob function. */
58 struct para_buffer pb;
61 static int print_blob(struct osl_table *table, struct osl_row *row, const char *name, void *data)
63 struct osl_object obj;
66 struct lsblob_data *lbd = data;
68 if (!(lbd->flags & BLOB_LS_FLAG_LONG)) {
69 para_printf(&lbd->pb, "%s\n", name);
72 ret = osl_get_object(table, row, BLOBCOL_ID, &obj);
75 id = *(uint32_t *)obj.data;
76 para_printf(&lbd->pb, "%u\t%s\n", id, name);
80 enum blob_match_loop_flags {
85 struct blob_match_data {
86 struct osl_table *table;
92 int (*action)(struct osl_table *table, struct osl_row *row, const char *name, void *data);
95 static int action_if_blob_matches(struct osl_row *row, void *data)
97 struct blob_match_data *bmd = data;
98 struct osl_object name_obj;
100 int ret = osl_get_object(bmd->table, row, BLOBCOL_NAME, &name_obj);
103 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
106 name = (char *)name_obj.data;
107 if (!*name) /* ignore dummy row */
109 if (!bmd->patterns_size) /* match everything if no pattern was given */
110 return bmd->action(bmd->table, row, name, bmd->data);
111 for (p = bmd->patterns; p < bmd->patterns + bmd->patterns_size;
112 p += strlen(p) + 1) {
113 ret = fnmatch(p, name, bmd->fnmatch_flags);
114 if (ret == FNM_NOMATCH)
118 return bmd->action(bmd->table, row, name, bmd->data);
123 static int for_each_matching_blob(struct blob_match_data *bmd)
125 unsigned col = (bmd->loop_flags & BM_NAME_LOOP)?
126 BLOBCOL_NAME : BLOBCOL_ID;
128 if (bmd->loop_flags & BM_REVERSE_LOOP)
129 return osl_rbtree_loop_reverse(bmd->table, col, bmd, action_if_blob_matches);
130 return osl_rbtree_loop(bmd->table, col, bmd, action_if_blob_matches);
133 int com_lsblob_callback(struct osl_table *table,
134 const struct osl_object *query, struct osl_object *ls_output)
136 struct lsblob_data lbd = {.flags = *(uint32_t *)query};
137 struct blob_match_data bmd = {
139 .patterns = (char *)query->data + sizeof(uint32_t),
140 .patterns_size = query->size - sizeof(uint32_t),
146 if (lbd.flags & BLOB_LS_FLAG_REVERSE)
147 bmd.loop_flags |= BM_REVERSE_LOOP;
148 if (!(lbd.flags & BLOB_LS_FLAG_SORT_BY_ID))
149 bmd.loop_flags |= BM_NAME_LOOP;
150 ret = for_each_matching_blob(&bmd);
152 ls_output->data = lbd.pb.buf;
153 ls_output->size = lbd.pb.size;
161 static int com_lsblob(callback_function *f, int fd, int argc, char * const * const argv)
164 struct osl_object options = {.data = &flags, .size = sizeof(flags)},
168 for (i = 1; i < argc; i++) {
169 const char *arg = argv[i];
172 if (!strcmp(arg, "--")) {
176 if (!strcmp(arg, "-l")) {
177 flags |= BLOB_LS_FLAG_LONG;
180 if (!strcmp(arg, "-i")) {
181 flags |= BLOB_LS_FLAG_SORT_BY_ID;
184 if (!strcmp(arg, "-r")) {
185 flags |= BLOB_LS_FLAG_REVERSE;
190 // return -E_BLOB_SYNTAX;
191 ret = send_option_arg_callback_request(&options, argc - i,
192 argv + i, f, &result);
194 send_buffer(fd, (char *)result.data);
200 static int cat_blob(struct osl_table *table, struct osl_row *row,
201 __a_unused const char *name, void *data)
204 struct osl_object *blobs = data;
205 struct osl_object obj;
207 ret = osl_open_disk_object(table, row, BLOBCOL_DEF, &obj);
211 blobs->data = para_realloc(blobs->data, blobs->size + obj.size);
212 memcpy(blobs->data + blobs->size, obj.data, obj.size);
213 blobs->size += obj.size;
215 return osl_close_disk_object(&obj);
218 static int com_catblob_callback(struct osl_table *table,
219 const struct osl_object *query, struct osl_object *result)
222 struct blob_match_data bmd = {
224 .patterns = (char *)query->data,
225 .patterns_size = query->size,
230 ret = for_each_matching_blob(&bmd);
233 return (ret > 0)? 0 : ret;
236 static int com_catblob(callback_function *f, int fd, int argc,
237 char * const * const argv)
239 struct osl_object result;
243 return -E_BLOB_SYNTAX;
244 ret = send_standard_callback_request(argc - 1, argv + 1, f, &result);
246 ret = send_bin_buffer(fd, (char *)result.data, result.size);
253 struct para_buffer pb;
254 unsigned num_removed;
257 static int remove_blob(struct osl_table *table, struct osl_row *row,
258 const char *name, void *data)
260 struct rmblob_data *rmbd = data;
261 int ret = osl_del_row(table, row);
263 para_printf(&rmbd->pb, "%s: %s\n", name, PARA_STRERROR(-ret));
267 return 1; /* return success to remove other matching blobs. */
270 static int com_rmblob_callback(struct osl_table *table,
271 const struct osl_object *query,
272 __a_unused struct osl_object *result)
275 struct rmblob_data rmbd = {.num_removed = 0};
276 struct blob_match_data bmd = {
278 .patterns = (char *)query->data,
279 .patterns_size = query->size,
281 .action = remove_blob
284 ret = for_each_matching_blob(&bmd);
286 para_printf(&rmbd.pb, "%s\n", PARA_STRERROR(-ret));
287 if (!rmbd.num_removed)
288 para_printf(&rmbd.pb, "no matches, nothing removed\n");
290 para_printf(&rmbd.pb, "removed %d blobs\n", rmbd.num_removed);
291 result->data = rmbd.pb.buf;
292 result->size = rmbd.pb.size;
296 static int com_rmblob(callback_function *f, __a_unused int fd, int argc,
297 char * const * const argv)
300 struct osl_object result;
303 return -E_MOOD_SYNTAX;
304 ret = send_option_arg_callback_request(NULL, argc - 1, argv + 1, f,
307 send_buffer(fd, (char *)result.data);
313 static int com_addblob_callback(struct osl_table *table,
314 const struct osl_object *query,
315 __a_unused struct osl_object *result)
317 struct osl_object objs[NUM_BLOB_COLUMNS];
318 char *name = query->data;
319 size_t name_len = strlen(name) + 1;
324 ret = osl_get_num_rows(table, &num_rows);
327 if (!num_rows) { /* this is the first entry ever added */
328 /* insert dummy row containing the id */
329 id = 2; /* this entry will be entry #1, so 2 is the next */
330 objs[BLOBCOL_ID].data = &id;
331 objs[BLOBCOL_ID].size = sizeof(id);
332 objs[BLOBCOL_NAME].data = "";
333 objs[BLOBCOL_NAME].size = 1;
334 objs[BLOBCOL_DEF].data = "";
335 objs[BLOBCOL_DEF].size = 1;
336 ret = osl_add_row(table, objs);
339 } else { /* get id of the dummy row and increment it */
341 struct osl_object obj = {.data = "", .size = 1};
342 ret = osl_get_row(table, BLOBCOL_NAME, &obj, &row);
345 ret = osl_get_object(table, row, BLOBCOL_ID, &obj);
348 id = *(uint32_t *)obj.data + 1;
350 ret = osl_update_object(table, row, BLOBCOL_ID, &obj);
355 objs[BLOBCOL_ID].data = &id;
356 objs[BLOBCOL_ID].size = sizeof(id);
357 objs[BLOBCOL_NAME].data = name;
358 objs[BLOBCOL_NAME].size = name_len;
359 objs[BLOBCOL_DEF].data = name + name_len;
360 objs[BLOBCOL_DEF].size = query->size - name_len;
361 return osl_add_row(table, objs);
364 static int com_addblob(callback_function *f, int fd, int argc,
365 char * const * const argv)
367 struct osl_object arg_obj;
370 return -E_BLOB_SYNTAX;
371 if (!*argv[1]) /* empty name is reserved for the dummy row */
372 return -E_BLOB_SYNTAX;
373 PARA_NOTICE_LOG("argv[1]: %s\n", argv[1]);
374 arg_obj.size = strlen(argv[1]) + 1;
375 arg_obj.data = (char *)argv[1];
376 return stdin_command(fd, &arg_obj, f, 10 * 1024 * 1024, NULL);
379 static int com_mvblob_callback(struct osl_table *table,
380 const struct osl_object *query,
381 __a_unused struct osl_object *result)
383 char *src = (char *) query->data;
384 struct osl_object obj = {.data = src, .size = strlen(src) + 1};
385 char *dest = src + obj.size;
387 int ret = osl_get_row(table, BLOBCOL_NAME, &obj, &row);
392 obj.size = strlen(dest) + 1;
393 return osl_update_object(table, row, BLOBCOL_NAME, &obj);
396 static int com_mvblob(callback_function *f, __a_unused int fd,
397 int argc, char * const * const argv)
400 return -E_MOOD_SYNTAX;
401 return send_option_arg_callback_request(NULL, argc - 1, argv + 1, f,
405 #define DEFINE_BLOB_COMMAND(cmd_name, table_name, cmd_prefix) \
406 static int com_ ## cmd_name ## cmd_prefix ## _callback(const struct osl_object *query, \
407 struct osl_object *output) \
409 return com_ ## cmd_name ## blob_callback(table_name ## _table, query, output); \
411 int com_ ## cmd_name ## cmd_prefix(int fd, int argc, char * const * const argv) \
413 return com_ ## cmd_name ## blob(com_ ## cmd_name ## cmd_prefix ## _callback, fd, argc, argv); \
416 static int blob_get_name_by_id(struct osl_table *table, uint32_t id,
420 struct osl_object obj = {.data = &id, .size = sizeof(id)};
426 ret = osl_get_row(table, BLOBCOL_ID, &obj, &row);
429 ret = osl_get_object(table, row, BLOBCOL_NAME, &obj);
432 *name = (char *)obj.data;
436 /** Define the \p get_name_by_id function for this blob type. */
437 #define DEFINE_GET_NAME_BY_ID(table_name, cmd_prefix) \
438 int cmd_prefix ## _get_name_by_id(uint32_t id, char **name) \
440 return blob_get_name_by_id(table_name ## _table, id, name); \
443 /** Define the \p shutdown function for this blob type. */
444 #define DEFINE_BLOB_SHUTDOWN(table_name) \
445 void table_name ## _shutdown(enum osl_close_flags flags) \
447 osl_close_table(table_name ## _table, flags); \
448 table_name ## _table = NULL; \
451 static int blob_init(struct osl_table **table,
452 struct osl_table_description *desc,
453 struct table_info *ti, const char *db)
458 ret = osl_open_table(ti->desc, &ti->table);
464 return ret == -E_NOENT? 1 : ret;
467 /** Define the \p init function for this blob type. */
468 #define DEFINE_BLOB_INIT(table_name) \
469 int table_name ## _init(struct table_info *ti, const char *db) \
471 return blob_init(&table_name ## _table, \
472 &table_name ## _table_desc, ti, db); \
476 /** Define all functions for this blob type. */
477 #define DEFINE_BLOB_FUNCTIONS(table_name, cmd_prefix) \
478 DEFINE_BLOB_COMMAND(ls, table_name, cmd_prefix) \
479 DEFINE_BLOB_COMMAND(cat, table_name, cmd_prefix) \
480 DEFINE_BLOB_COMMAND(add, table_name, cmd_prefix) \
481 DEFINE_BLOB_COMMAND(rm, table_name, cmd_prefix) \
482 DEFINE_BLOB_COMMAND(mv, table_name, cmd_prefix) \
483 DEFINE_GET_NAME_BY_ID(table_name, cmd_prefix); \
484 DEFINE_BLOB_SHUTDOWN(table_name); \
485 DEFINE_BLOB_INIT(table_name);
487 /** \cond doxygen isn't smart enough to recognize these */
488 DEFINE_BLOB_FUNCTIONS(lyrics, lyr);
489 DEFINE_BLOB_FUNCTIONS(images, img);
490 DEFINE_BLOB_FUNCTIONS(moods, mood);
491 DEFINE_BLOB_FUNCTIONS(playlists, pl);