8 /** \file blob.c Macros and functions for blob handling. */
10 static struct osl_column_description blob_cols[] = {
12 .storage_type = OSL_MAPPED_STORAGE,
13 .storage_flags = OSL_RBTREE | OSL_UNIQUE | OSL_FIXED_SIZE,
16 .compare_function = uint32_compare
19 .storage_type = OSL_MAPPED_STORAGE,
20 .storage_flags = OSL_RBTREE | OSL_UNIQUE,
22 .compare_function = string_compare
25 .storage_type = OSL_DISK_STORAGE,
31 /** \cond doxygen isn't smart enough to recognize these */
32 INIT_BLOB_TABLE(lyrics);
33 INIT_BLOB_TABLE(images);
34 INIT_BLOB_TABLE(moods);
35 INIT_BLOB_TABLE(playlists);
38 /** Flags that may be passed to the \p ls functions of each blob type. */
40 /** List both id and name. */
41 BLOB_LS_FLAG_LONG = 1,
42 /** Reverse sort order. */
43 BLOB_LS_FLAG_REVERSE = 2,
44 /** Sort by id instead of name. */
45 BLOB_LS_FLAG_SORT_BY_ID = 4,
48 /** Data passed to \p com_lsbob_callback(). */
49 struct com_lsblob_options {
50 /** Given flags for the ls command. */
54 /** Structure passed to the \p print_blob loop function. */
55 struct lsblob_loop_data {
56 struct com_lsblob_options *opts;
57 struct para_buffer *pb;
58 struct osl_table *table;
61 static int print_blob(struct osl_row *row, void *loop_data)
63 struct osl_object obj;
67 struct lsblob_loop_data *lld = loop_data;
69 ret = osl_get_object(lld->table, row, BLOBCOL_NAME, &obj);
73 if (!*name) /* ignore dummy row */
75 ret = osl_get_object(lld->table, row, BLOBCOL_ID, &obj);
78 id = *(uint32_t *)obj.data;
79 if (lld->opts->flags & BLOB_LS_FLAG_LONG)
80 para_printf(lld->pb, "%u\t%s\n", id, name);
82 para_printf(lld->pb, "%s\n", name);
86 int com_lsblob_callback(struct osl_table *table,
87 const struct osl_object *query, struct osl_object *ls_output)
89 struct para_buffer pb = {.buf = NULL};
90 struct lsblob_loop_data lld = {.opts = query->data, .pb = &pb, .table = table};
93 if (lld.opts->flags & BLOB_LS_FLAG_REVERSE) {
94 if (lld.opts->flags & BLOB_LS_FLAG_SORT_BY_ID)
95 ret = osl_rbtree_loop(lld.table, BLOBCOL_ID, &lld, print_blob);
97 ret = osl_rbtree_loop_reverse(lld.table, BLOBCOL_NAME, &lld, print_blob);
99 if (lld.opts->flags & BLOB_LS_FLAG_SORT_BY_ID)
100 ret = osl_rbtree_loop_reverse(lld.table, BLOBCOL_ID, &lld, print_blob);
102 ret = osl_rbtree_loop(lld.table, BLOBCOL_NAME, &lld, print_blob);
104 ls_output->data = pb.buf;
105 ls_output->size = pb.size;
109 static int com_lsblob(callback_function *f, int fd, int argc, char * const * const argv)
111 struct com_lsblob_options clbo = {.flags = 0};
112 struct osl_object query = {.data = &clbo, .size = sizeof(clbo)},
116 for (i = 1; i < argc; i++) {
117 const char *arg = argv[i];
120 if (!strcmp(arg, "--")) {
124 if (!strcmp(arg, "-l")) {
125 clbo.flags |= BLOB_LS_FLAG_LONG;
128 if (!strcmp(arg, "-i")) {
129 clbo.flags |= BLOB_LS_FLAG_SORT_BY_ID;
132 if (!strcmp(arg, "-r")) {
133 clbo.flags |= BLOB_LS_FLAG_REVERSE;
138 return -E_BLOB_SYNTAX;
139 ret = send_option_arg_callback_request(&query, argc - i,
140 argv + i, f, &ls_output);
142 send_buffer(fd, (char *)ls_output.data);
143 free(ls_output.data);
148 static int com_catblob_callback(struct osl_table *table,
149 const struct osl_object *query, struct osl_object *output)
151 struct osl_object obj;
155 ret = osl_get_row(table, BLOBCOL_NAME, query, &row);
158 ret = osl_open_disk_object(table, row, BLOBCOL_DEF, &obj);
161 output->data = para_malloc(obj.size);
162 output->size = obj.size;
163 memcpy(output->data, obj.data, obj.size);
164 return osl_close_disk_object(&obj);
166 static int com_catblob(callback_function *f, int fd, int argc,
167 char * const * const argv)
169 struct osl_object cat_output = {.data = NULL};
173 return -E_BLOB_SYNTAX;
174 if (!*argv[1]) /* empty name is reserved of the dummy row */
175 return -E_BLOB_SYNTAX;
176 ret = send_standard_callback_request(1, argv + 1, f, &cat_output);
177 if (ret >= 0 && cat_output.data)
178 ret = send_buffer(fd, (char *)cat_output.data);
179 free(cat_output.data);
184 static int com_addblob_callback(struct osl_table *table,
185 const struct osl_object *query,
186 __a_unused struct osl_object *result)
188 struct osl_object objs[NUM_BLOB_COLUMNS];
189 char *name = query->data;
190 size_t name_len = strlen(name) + 1;
195 ret = osl_get_num_rows(table, &num_rows);
198 if (!num_rows) { /* this is the first entry ever added */
199 /* insert dummy row containing the id */
200 id = 2; /* this entry will be entry #1, so 2 is the next */
201 objs[BLOBCOL_ID].data = &id;
202 objs[BLOBCOL_ID].size = sizeof(id);
203 objs[BLOBCOL_NAME].data = "";
204 objs[BLOBCOL_NAME].size = 1;
205 objs[BLOBCOL_DEF].data = "";
206 objs[BLOBCOL_DEF].size = 1;
207 ret = osl_add_row(table, objs);
210 } else { /* get id of the dummy row and increment it */
212 struct osl_object obj = {.data = "", .size = 1};
213 ret = osl_get_row(table, BLOBCOL_NAME, &obj, &row);
216 ret = osl_get_object(table, row, BLOBCOL_ID, &obj);
219 id = *(uint32_t *)obj.data + 1;
221 ret = osl_update_object(table, row, BLOBCOL_ID, &obj);
226 objs[BLOBCOL_ID].data = &id;
227 objs[BLOBCOL_ID].size = sizeof(id);
228 objs[BLOBCOL_NAME].data = name;
229 objs[BLOBCOL_NAME].size = name_len;
230 objs[BLOBCOL_DEF].data = name + name_len;
231 objs[BLOBCOL_DEF].size = query->size - name_len;
232 return osl_add_row(table, objs);
235 static int com_addblob(callback_function *f, __a_unused int fd, int argc,
236 char * const * const argv)
238 struct osl_object arg_obj;
241 return -E_BLOB_SYNTAX;
242 if (!*argv[1]) /* empty name is reserved for the dummy row */
243 return -E_BLOB_SYNTAX;
244 PARA_NOTICE_LOG("argv[1]: %s\n", argv[1]);
245 arg_obj.size = strlen(argv[1]) + 1;
246 arg_obj.data = (char *)argv[1];
247 return stdin_command(&arg_obj, f, 10 * 1024 * 1024, NULL);
250 static int com_rmblob_callback(struct osl_table *table,
251 const struct osl_object *query,
252 __a_unused struct osl_object *result)
254 char *p = query->data;
258 for (; p < (char *)query->data + query->size; p += len + 1) {
260 struct osl_object obj;
265 ret = osl_get_row(table, BLOBCOL_NAME, &obj, &row);
268 ret = osl_del_row(table, row);
275 static int com_rmblob(callback_function *f, __a_unused int fd, int argc,
276 char * const * const argv)
279 return -E_MOOD_SYNTAX;
280 return send_option_arg_callback_request(NULL, argc - 1, argv + 1, f,
284 static int com_mvblob_callback(struct osl_table *table,
285 const struct osl_object *query,
286 __a_unused struct osl_object *result)
288 char *src = (char *) query->data;
289 struct osl_object obj = {.data = src, .size = strlen(src) + 1};
290 char *dest = src + obj.size;
292 int ret = osl_get_row(table, BLOBCOL_NAME, &obj, &row);
297 obj.size = strlen(dest) + 1;
298 return osl_update_object(table, row, BLOBCOL_NAME, &obj);
301 static int com_mvblob(callback_function *f, __a_unused int fd,
302 int argc, char * const * const argv)
305 return -E_MOOD_SYNTAX;
306 return send_option_arg_callback_request(NULL, argc - 1, argv + 1, f,
310 #define DEFINE_BLOB_COMMAND(cmd_name, table_name, cmd_prefix) \
311 static int com_ ## cmd_name ## cmd_prefix ## _callback(const struct osl_object *query, \
312 struct osl_object *output) \
314 return com_ ## cmd_name ## blob_callback(table_name ## _table, query, output); \
316 int com_ ## cmd_name ## cmd_prefix(int fd, int argc, char * const * const argv) \
318 return com_ ## cmd_name ## blob(com_ ## cmd_name ## cmd_prefix ## _callback, fd, argc, argv); \
321 static int blob_get_name_by_id(struct osl_table *table, uint32_t id,
325 struct osl_object obj = {.data = &id, .size = sizeof(id)};
331 ret = osl_get_row(table, BLOBCOL_ID, &obj, &row);
334 ret = osl_get_object(table, row, BLOBCOL_NAME, &obj);
337 *name = (char *)obj.data;
340 /** Define the \p get_name_by_id function for this blob type. */
341 #define DEFINE_GET_NAME_BY_ID(table_name, cmd_prefix) \
342 int cmd_prefix ## _get_name_by_id(uint32_t id, char **name) \
344 return blob_get_name_by_id(table_name ## _table, id, name); \
347 /** Define the \p shutdown function for this blob type. */
348 #define DEFINE_BLOB_SHUTDOWN(table_name) \
349 void table_name ## _shutdown(enum osl_close_flags flags) \
351 osl_close_table(table_name ## _table, flags); \
352 table_name ## _table = NULL; \
355 static int blob_init(struct osl_table **table,
356 struct osl_table_description *desc,
357 struct table_info *ti, const char *db)
362 ret = osl_open_table(ti->desc, &ti->table);
368 return ret == -E_NOENT? 1 : ret;
371 /** Define the \p init function for this blob type. */
372 #define DEFINE_BLOB_INIT(table_name) \
373 int table_name ## _init(struct table_info *ti, const char *db) \
375 return blob_init(&table_name ## _table, \
376 &table_name ## _table_desc, ti, db); \
380 /** Define all functions for this blob type. */
381 #define DEFINE_BLOB_FUNCTIONS(table_name, cmd_prefix) \
382 DEFINE_BLOB_COMMAND(ls, table_name, cmd_prefix) \
383 DEFINE_BLOB_COMMAND(cat, table_name, cmd_prefix) \
384 DEFINE_BLOB_COMMAND(add, table_name, cmd_prefix) \
385 DEFINE_BLOB_COMMAND(rm, table_name, cmd_prefix) \
386 DEFINE_BLOB_COMMAND(mv, table_name, cmd_prefix) \
387 DEFINE_GET_NAME_BY_ID(table_name, cmd_prefix); \
388 DEFINE_BLOB_SHUTDOWN(table_name); \
389 DEFINE_BLOB_INIT(table_name);
391 /** \cond doxygen isn't smart enough to recognize these */
392 DEFINE_BLOB_FUNCTIONS(lyrics, lyr);
393 DEFINE_BLOB_FUNCTIONS(images, img);
394 DEFINE_BLOB_FUNCTIONS(moods, mood);
395 DEFINE_BLOB_FUNCTIONS(playlists, pl);