2 * Copyright (C) 2007 Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 #include <atompub/atom.h>
28 AtomEntry * (*retrieve_entry) (AtomCtx *, AtomID *);
29 void (*enumerate_entries) (AtomCtx *, char ***, AtomEntry ***, size_t *);
30 int (*is_feed) (AtomCtx *, AtomID *);
37 backend = g_slice_new (AtomBackend);
38 backend->retrieve_entry = NULL;
39 backend->enumerate_entries = NULL;
40 backend->is_feed = NULL;
45 atom_backend_delete (AtomBackend *backend)
47 g_slice_free (AtomBackend, backend);
51 atom_backend_retrieve_entry_set (AtomBackend *backend,
52 AtomEntry *retrieve_entry (AtomCtx *,
55 backend->retrieve_entry = retrieve_entry;
59 atom_backend_enumerate_entries_set (AtomBackend *backend,
60 void enumerate_entries (AtomCtx *,
65 backend->enumerate_entries = enumerate_entries;
69 atom_backend_is_feed_set (AtomBackend *backend,
70 int is_feed (AtomCtx *, AtomID *))
72 backend->is_feed = is_feed;
76 atom_retrieve_entry (AtomCtx *ctx, AtomID *id)
79 backend = atom_backend (ctx);
80 if (backend && backend->retrieve_entry)
81 return backend->retrieve_entry (ctx, id);
86 atom_backend_enumerate_entries (AtomCtx *ctx, char *** reqs,
87 AtomEntry *** entries, size_t *len)
91 AtomEntry **rentries = NULL;
94 backend = atom_backend (ctx);
95 if (backend && backend->enumerate_entries)
97 backend->enumerate_entries (ctx, &rreqs, &rentries, &rlen);
98 atom_map_backend_requests (ctx, rreqs, rentries, rlen);
99 atom_frontend_map_entries (ctx, rreqs, rentries, rlen);
107 for (i = 0; i < rlen; i++)
117 for (i = 0; i < rlen; i++)
118 atom_entry_delete (rentries[i]);
126 atom_is_feed (AtomCtx *ctx, AtomID *id)
128 AtomBackend *backend;
130 backend = atom_backend (ctx);
131 if (backend && backend->is_feed)
133 return backend->is_feed (ctx, id);
135 /* Frontend may make the decision of whether the requested resource is
136 * a feed or not. If it is not able to do so and backend isn't either,
139 aerr = atom_error_new ();
140 atom_error_code_set (aerr, 404);
141 atom_error_message_set (aerr, "Not Found");
142 atom_error_set (ctx, aerr);
147 atom_retrieve_feed (AtomCtx *ctx)
152 atom_backend_enumerate_entries (ctx, NULL, &entries, &len);
153 if (atom_error_get (ctx) != NULL)
155 feed = atom_feed_new ();
156 atom_feed_entry_append_array (feed, entries, len);