1 /* notmuch-private.h - Internal interfaces for notmuch.
3 * Copyright © 2009 Carl Worth
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program 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
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see http://www.gnu.org/licenses/ .
18 * Author: Carl Worth <cworth@cworth.org>
21 #ifndef NOTMUCH_PRIVATE_H
22 #define NOTMUCH_PRIVATE_H
25 #define _GNU_SOURCE /* For getline and asprintf */
37 #include <sys/types.h>
49 #include <gmime/gmime.h>
52 #include "error_util.h"
54 #pragma GCC visibility push(hidden)
57 # define DEBUG_DATABASE_SANITY 1
58 # define DEBUG_QUERY 1
61 #define COMPILE_TIME_ASSERT(pred) ((void)sizeof(char[1 - 2*!(pred)]))
63 #define STRNCMP_LITERAL(var, literal) \
64 strncmp ((var), (literal), sizeof (literal) - 1)
66 #define unused(x) x __attribute__ ((unused))
69 # define visible __attribute__((visibility("default")))
74 /* Thanks to Andrew Tridgell's (SAMBA's) talloc for this definition of
75 * unlikely. The talloc source code comes to us via the GNU LGPL v. 3.
77 /* these macros gain us a few percent of speed on gcc */
79 /* the strange !! is to ensure that __builtin_expect() takes either 0 or 1
80 as its first argument */
82 #define likely(x) __builtin_expect(!!(x), 1)
85 #define unlikely(x) __builtin_expect(!!(x), 0)
92 #define unlikely(x) (x)
97 NOTMUCH_VALUE_TIMESTAMP = 0,
98 NOTMUCH_VALUE_MESSAGE_ID,
100 NOTMUCH_VALUE_SUBJECT
103 /* Xapian (with flint backend) complains if we provide a term longer
104 * than this, but I haven't yet found a way to query the limit
105 * programmatically. */
106 #define NOTMUCH_TERM_MAX 245
108 #define NOTMUCH_METADATA_THREAD_ID_PREFIX "thread_id_"
110 /* For message IDs we have to be even more restrictive. Beyond fitting
111 * into the term limit, we also use message IDs to construct
112 * metadata-key values. And the documentation says that these should
113 * be restricted to about 200 characters. (The actual limit for the
114 * chert backend at least is 252.)
116 #define NOTMUCH_MESSAGE_ID_MAX (200 - sizeof (NOTMUCH_METADATA_THREAD_ID_PREFIX))
118 typedef enum _notmuch_private_status {
119 /* First, copy all the public status values. */
120 NOTMUCH_PRIVATE_STATUS_SUCCESS = NOTMUCH_STATUS_SUCCESS,
121 NOTMUCH_PRIVATE_STATUS_OUT_OF_MEMORY = NOTMUCH_STATUS_OUT_OF_MEMORY,
122 NOTMUCH_PRIVATE_STATUS_READ_ONLY_DATABASE = NOTMUCH_STATUS_READ_ONLY_DATABASE,
123 NOTMUCH_PRIVATE_STATUS_XAPIAN_EXCEPTION = NOTMUCH_STATUS_XAPIAN_EXCEPTION,
124 NOTMUCH_PRIVATE_STATUS_FILE_NOT_EMAIL = NOTMUCH_STATUS_FILE_NOT_EMAIL,
125 NOTMUCH_PRIVATE_STATUS_NULL_POINTER = NOTMUCH_STATUS_NULL_POINTER,
126 NOTMUCH_PRIVATE_STATUS_TAG_TOO_LONG = NOTMUCH_STATUS_TAG_TOO_LONG,
127 NOTMUCH_PRIVATE_STATUS_UNBALANCED_FREEZE_THAW = NOTMUCH_STATUS_UNBALANCED_FREEZE_THAW,
129 /* Then add our own private values. */
130 NOTMUCH_PRIVATE_STATUS_TERM_TOO_LONG = NOTMUCH_STATUS_LAST_STATUS,
131 NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND,
133 NOTMUCH_PRIVATE_STATUS_LAST_STATUS
134 } notmuch_private_status_t;
136 /* Coerce a notmuch_private_status_t value to a notmuch_status_t
137 * value, generating an internal error if the private value is equal
138 * to or greater than NOTMUCH_STATUS_LAST_STATUS. (The idea here is
139 * that the caller has previously handled any expected
140 * notmuch_private_status_t values.)
142 * Note that the function _internal_error does not return. Evaluating
143 * to NOTMUCH_STATUS_SUCCESS is done purely to appease the compiler.
145 #define COERCE_STATUS(private_status, format, ...) \
146 ((private_status >= (notmuch_private_status_t) NOTMUCH_STATUS_LAST_STATUS)\
148 _internal_error (format " (%s).\n", \
151 (notmuch_status_t) NOTMUCH_PRIVATE_STATUS_SUCCESS \
153 (notmuch_status_t) private_status)
155 /* Flags shared by various lookup functions. */
156 typedef enum _notmuch_find_flags {
157 /* Lookup without creating any documents. This is the default
159 NOTMUCH_FIND_LOOKUP = 0,
160 /* If set, create the necessary document (or documents) if they
161 * are missing. Requires a read/write database. */
162 NOTMUCH_FIND_CREATE = 1<<0,
163 } notmuch_find_flags_t;
165 typedef struct _notmuch_doc_id_set notmuch_doc_id_set_t;
169 /* Lookup a prefix value by name.
171 * XXX: This should really be static inside of message.cc, and we can
172 * do that once we convert database.cc to use the
173 * _notmuch_message_add/remove_term functions. */
175 _find_prefix (const char *name);
178 _notmuch_message_id_compressed (void *ctx, const char *message_id);
181 _notmuch_database_ensure_writable (notmuch_database_t *notmuch);
184 _notmuch_database_relative_path (notmuch_database_t *notmuch,
188 _notmuch_database_split_path (void *ctx,
190 const char **directory,
191 const char **basename);
194 _notmuch_database_get_directory_db_path (const char *path);
197 _notmuch_database_generate_doc_id (notmuch_database_t *notmuch);
199 notmuch_private_status_t
200 _notmuch_database_find_unique_doc_id (notmuch_database_t *notmuch,
201 const char *prefix_name,
203 unsigned int *doc_id);
206 _notmuch_database_find_directory_id (notmuch_database_t *database,
208 notmuch_find_flags_t flags,
209 unsigned int *directory_id);
212 _notmuch_database_get_directory_path (void *ctx,
213 notmuch_database_t *notmuch,
214 unsigned int doc_id);
217 _notmuch_database_filename_to_direntry (void *ctx,
218 notmuch_database_t *notmuch,
219 const char *filename,
220 notmuch_find_flags_t flags,
225 notmuch_directory_t *
226 _notmuch_directory_create (notmuch_database_t *notmuch,
228 notmuch_find_flags_t flags,
229 notmuch_status_t *status_ret);
232 _notmuch_directory_get_document_id (notmuch_directory_t *directory);
237 _notmuch_message_create (const void *talloc_owner,
238 notmuch_database_t *notmuch,
240 notmuch_private_status_t *status);
243 _notmuch_message_create_for_message_id (notmuch_database_t *notmuch,
244 const char *message_id,
245 notmuch_private_status_t *status);
248 _notmuch_message_get_doc_id (notmuch_message_t *message);
251 _notmuch_message_get_in_reply_to (notmuch_message_t *message);
253 notmuch_private_status_t
254 _notmuch_message_add_term (notmuch_message_t *message,
255 const char *prefix_name,
258 notmuch_private_status_t
259 _notmuch_message_remove_term (notmuch_message_t *message,
260 const char *prefix_name,
263 notmuch_private_status_t
264 _notmuch_message_gen_terms (notmuch_message_t *message,
265 const char *prefix_name,
269 _notmuch_message_upgrade_filename_storage (notmuch_message_t *message);
272 _notmuch_message_upgrade_folder (notmuch_message_t *message);
275 _notmuch_message_add_filename (notmuch_message_t *message,
276 const char *filename);
279 _notmuch_message_remove_filename (notmuch_message_t *message,
280 const char *filename);
283 _notmuch_message_rename (notmuch_message_t *message,
284 const char *new_filename);
287 _notmuch_message_ensure_thread_id (notmuch_message_t *message);
290 _notmuch_message_set_header_values (notmuch_message_t *message,
293 const char *subject);
295 _notmuch_message_sync (notmuch_message_t *message);
298 _notmuch_message_delete (notmuch_message_t *message);
301 _notmuch_message_close (notmuch_message_t *message);
303 /* Get a copy of the data in this message document.
305 * Caller should talloc_free the result when done.
307 * This function is intended to support database upgrade and really
308 * shouldn't be used otherwise. */
310 _notmuch_message_talloc_copy_data (notmuch_message_t *message);
312 /* Clear the data in this message document.
314 * This function is intended to support database upgrade and really
315 * shouldn't be used otherwise. */
317 _notmuch_message_clear_data (notmuch_message_t *message);
319 /* Set the author member of 'message' - this is the representation used
320 * when displaying the message */
322 _notmuch_message_set_author (notmuch_message_t *message, const char *author);
324 /* Get the author member of 'message' */
326 _notmuch_message_get_author (notmuch_message_t *message);
330 /* XXX: I haven't decided yet whether these will actually get exported
331 * into the public interface in notmuch.h
334 typedef struct _notmuch_message_file notmuch_message_file_t;
336 /* Open a file containing a single email message.
338 * The caller should call notmuch_message_close when done with this.
340 * Returns NULL if any error occurs.
342 notmuch_message_file_t *
343 _notmuch_message_file_open (const char *filename);
345 /* Like notmuch_message_file_open but with 'ctx' as the talloc owner. */
346 notmuch_message_file_t *
347 _notmuch_message_file_open_ctx (void *ctx, const char *filename);
349 /* Close a notmuch message previously opened with notmuch_message_open. */
351 _notmuch_message_file_close (notmuch_message_file_t *message);
353 /* Parse the message.
355 * This will be done automatically as necessary on other calls
356 * depending on it, but an explicit call allows for better error
360 _notmuch_message_file_parse (notmuch_message_file_t *message);
362 /* Get the gmime message of a message file.
364 * The message file is parsed as necessary.
366 * The GMimeMessage* is set to *mime_message on success (which the
367 * caller must not unref).
369 * XXX: Would be nice to not have to expose GMimeMessage here.
372 _notmuch_message_file_get_mime_message (notmuch_message_file_t *message,
373 GMimeMessage **mime_message);
375 /* Get the value of the specified header from the message as a UTF-8 string.
377 * The message file is parsed as necessary.
379 * The header name is case insensitive.
381 * The Received: header is special - for it all Received: headers in
382 * the message are concatenated
384 * The returned value is owned by the notmuch message and is valid
385 * only until the message is closed. The caller should copy it if
386 * needing to modify the value or to hold onto it for longer.
388 * Returns NULL on errors, empty string if the message does not
389 * contain a header line matching 'header'.
392 _notmuch_message_file_get_header (notmuch_message_file_t *message,
398 _notmuch_message_index_file (notmuch_message_t *message,
399 notmuch_message_file_t *message_file);
403 typedef struct _notmuch_message_node {
404 notmuch_message_t *message;
405 struct _notmuch_message_node *next;
406 } notmuch_message_node_t;
408 typedef struct _notmuch_message_list {
409 notmuch_message_node_t *head;
410 notmuch_message_node_t **tail;
411 } notmuch_message_list_t;
413 /* There's a rumor that there's an alternate struct _notmuch_messages
414 * somewhere with some nasty C++ objects in it. We'll try to maintain
415 * ignorance of that here. (See notmuch_mset_messages_t in query.cc)
417 struct visible _notmuch_messages {
418 notmuch_bool_t is_of_list_type;
419 notmuch_doc_id_set_t *excluded_doc_ids;
420 notmuch_message_node_t *iterator;
423 notmuch_message_list_t *
424 _notmuch_message_list_create (const void *ctx);
427 _notmuch_message_list_add_message (notmuch_message_list_t *list,
428 notmuch_message_t *message);
431 _notmuch_messages_create (notmuch_message_list_t *list);
436 _notmuch_mset_messages_valid (notmuch_messages_t *messages);
439 _notmuch_mset_messages_get (notmuch_messages_t *messages);
442 _notmuch_mset_messages_move_to_next (notmuch_messages_t *messages);
445 _notmuch_doc_id_set_contains (notmuch_doc_id_set_t *doc_ids,
446 unsigned int doc_id);
449 _notmuch_doc_id_set_remove (notmuch_doc_id_set_t *doc_ids,
450 unsigned int doc_id);
455 _notmuch_message_add_reply (notmuch_message_t *message,
456 notmuch_message_t *reply);
461 _notmuch_sha1_of_string (const char *str);
464 _notmuch_sha1_of_file (const char *filename);
468 typedef struct _notmuch_string_node {
470 struct _notmuch_string_node *next;
471 } notmuch_string_node_t;
473 typedef struct visible _notmuch_string_list {
475 notmuch_string_node_t *head;
476 notmuch_string_node_t **tail;
477 } notmuch_string_list_t;
479 notmuch_string_list_t *
480 _notmuch_string_list_create (const void *ctx);
482 /* Add 'string' to 'list'.
484 * The list will create its own talloced copy of 'string'.
487 _notmuch_string_list_append (notmuch_string_list_t *list,
491 _notmuch_string_list_sort (notmuch_string_list_t *list);
496 _notmuch_tags_create (const void *ctx, notmuch_string_list_t *list);
500 /* The notmuch_filenames_t iterates over a notmuch_string_list_t of
502 notmuch_filenames_t *
503 _notmuch_filenames_create (const void *ctx,
504 notmuch_string_list_t *list);
509 _notmuch_thread_create (void *ctx,
510 notmuch_database_t *notmuch,
511 unsigned int seed_doc_id,
512 notmuch_doc_id_set_t *match_set,
513 notmuch_string_list_t *excluded_terms,
514 notmuch_exclude_t omit_exclude,
515 notmuch_sort_t sort);
520 /* Implicit typecast from 'void *' to 'T *' is okay in C, but not in
521 * C++. In talloc_steal, an explicit cast is provided for type safety
522 * in some GCC versions. Otherwise, a cast is required. Provide a
523 * template function for this to maintain type safety, and redefine
524 * talloc_steal to use it.
527 template <class T> T *
528 _notmuch_talloc_steal (const void *new_ctx, const T *ptr)
530 return static_cast<T *> (talloc_steal (new_ctx, ptr));
533 #define talloc_steal _notmuch_talloc_steal
537 #pragma GCC visibility pop