notmuch_message_file_t *message_file;
notmuch_message_list_t *replies;
unsigned long flags;
+ /* For flags that are initialized on-demand, lazy_flags indicates
+ * if each flag has been initialized. */
+ unsigned long lazy_flags;
+
+ /* Message document modified since last sync */
+ notmuch_bool_t modified;
Xapian::Document doc;
Xapian::termcount termpos;
message->frozen = 0;
message->flags = 0;
+ message->lazy_flags = 0;
/* Each of these will be lazily created as needed. */
message->message_id = NULL;
*
* There is already a document with message ID 'message_id' in the
* database. The returned message can be used to query/modify the
- * document.
+ * document. The message may be a ghost message.
+ *
* NOTMUCH_PRIVATE_STATUS_NO_DOCUMENT_FOUND:
*
* No document with 'message_id' exists in the database. The
* returned message contains a newly created document (not yet
* added to the database) and a document ID that is known not to
- * exist in the database. The caller can modify the message, and a
- * call to _notmuch_message_sync will add * the document to the
- * database.
+ * exist in the database. This message is "blank"; that is, it
+ * contains only a message ID and no other metadata. The caller
+ * can modify the message, and a call to _notmuch_message_sync
+ * will add the document to the database.
*
* If an error occurs, this function will return NULL and *status
* will be set as appropriate. (The status pointer argument must
else if (*status_ret)
return NULL;
+ /* If the message ID is too long, substitute its sha1 instead. */
+ if (strlen (message_id) > NOTMUCH_MESSAGE_ID_MAX)
+ message_id = _notmuch_message_id_compressed (message, message_id);
+
term = talloc_asprintf (NULL, "%s%s",
_find_prefix ("id"), message_id);
if (term == NULL) {
doc_id = _notmuch_database_generate_doc_id (notmuch);
} catch (const Xapian::Error &error) {
- fprintf (stderr, "A Xapian exception occurred creating message: %s\n",
+ _notmuch_database_log(_notmuch_message_database (message), "A Xapian exception occurred creating message: %s\n",
error.get_msg().c_str());
notmuch->exception_reported = TRUE;
*status_ret = NOTMUCH_PRIVATE_STATUS_XAPIAN_EXCEPTION;
if (i == end)
return NULL;
- std::string term = *i;
+ const std::string &term = *i;
if (strncmp (term.c_str(), prefix, prefix_len))
return NULL;
const char *thread_prefix = _find_prefix ("thread"),
*tag_prefix = _find_prefix ("tag"),
*id_prefix = _find_prefix ("id"),
+ *type_prefix = _find_prefix ("type"),
*filename_prefix = _find_prefix ("file-direntry"),
*replyto_prefix = _find_prefix ("replyto");
message->message_id =
_notmuch_message_get_term (message, i, end, id_prefix);
+ /* Get document type */
+ assert (strcmp (id_prefix, type_prefix) < 0);
+ if (! NOTMUCH_TEST_BIT (message->lazy_flags, NOTMUCH_MESSAGE_FLAG_GHOST)) {
+ i.skip_to (type_prefix);
+ /* "T" is the prefix "type" fields. See
+ * BOOLEAN_PREFIX_INTERNAL. */
+ if (*i == "Tmail")
+ NOTMUCH_CLEAR_BIT (&message->flags, NOTMUCH_MESSAGE_FLAG_GHOST);
+ else if (*i == "Tghost")
+ NOTMUCH_SET_BIT (&message->flags, NOTMUCH_MESSAGE_FLAG_GHOST);
+ else
+ INTERNAL_ERROR ("Message without type term");
+ NOTMUCH_SET_BIT (&message->lazy_flags, NOTMUCH_MESSAGE_FLAG_GHOST);
+ }
+
/* Get filename list. Here we get only the terms. We lazily
* expand them to full file names when needed in
* _notmuch_message_ensure_filename_list. */
- assert (strcmp (id_prefix, filename_prefix) < 0);
+ assert (strcmp (type_prefix, filename_prefix) < 0);
if (!message->filename_term_list && !message->filename_list)
message->filename_term_list =
_notmuch_database_get_terms_with_prefix (message, i, end,
message->tag_list = NULL;
}
+ if (strcmp ("type", prefix_name) == 0) {
+ NOTMUCH_CLEAR_BIT (&message->flags, NOTMUCH_MESSAGE_FLAG_GHOST);
+ NOTMUCH_CLEAR_BIT (&message->lazy_flags, NOTMUCH_MESSAGE_FLAG_GHOST);
+ }
+
if (strcmp ("file-direntry", prefix_name) == 0) {
talloc_free (message->filename_term_list);
talloc_free (message->filename_list);
if (unlikely (filename == NULL))
return;
- message->message_file = _notmuch_message_file_open_ctx (message, filename);
+ message->message_file = _notmuch_message_file_open_ctx (
+ _notmuch_message_database (message), message, filename);
}
const char *
notmuch_message_get_header (notmuch_message_t *message, const char *header)
{
- std::string value;
+ Xapian::valueno slot = Xapian::BAD_VALUENO;
/* Fetch header from the appropriate xapian value field if
* available */
if (strcasecmp (header, "from") == 0)
- value = message->doc.get_value (NOTMUCH_VALUE_FROM);
+ slot = NOTMUCH_VALUE_FROM;
else if (strcasecmp (header, "subject") == 0)
- value = message->doc.get_value (NOTMUCH_VALUE_SUBJECT);
+ slot = NOTMUCH_VALUE_SUBJECT;
else if (strcasecmp (header, "message-id") == 0)
- value = message->doc.get_value (NOTMUCH_VALUE_MESSAGE_ID);
+ slot = NOTMUCH_VALUE_MESSAGE_ID;
- if (!value.empty())
- return talloc_strdup (message, value.c_str ());
+ if (slot != Xapian::BAD_VALUENO) {
+ try {
+ std::string value = message->doc.get_value (slot);
+
+ /* If we have NOTMUCH_FEATURE_FROM_SUBJECT_ID_VALUES, then
+ * empty values indicate empty headers. If we don't, then
+ * it could just mean we didn't record the header. */
+ if ((message->notmuch->features &
+ NOTMUCH_FEATURE_FROM_SUBJECT_ID_VALUES) ||
+ ! value.empty())
+ return talloc_strdup (message, value.c_str ());
+
+ } catch (Xapian::Error &error) {
+ _notmuch_database_log(_notmuch_message_database (message), "A Xapian exception occurred when reading header: %s\n",
+ error.get_msg().c_str());
+ message->notmuch->exception_reported = TRUE;
+ return NULL;
+ }
+ }
/* Otherwise fall back to parsing the file */
_notmuch_message_ensure_message_file (message);
if (message->message_file == NULL)
return NULL;
- return notmuch_message_file_get_header (message->message_file, header);
+ return _notmuch_message_file_get_header (message->message_file, header);
}
/* Return the message ID from the In-Reply-To header of 'message'.
return _notmuch_messages_create (message->replies);
}
+static void
+_notmuch_message_remove_terms (notmuch_message_t *message, const char *prefix)
+{
+ Xapian::TermIterator i;
+ size_t prefix_len = strlen (prefix);
+
+ while (1) {
+ i = message->doc.termlist_begin ();
+ i.skip_to (prefix);
+
+ /* Terminate loop when no terms remain with desired prefix. */
+ if (i == message->doc.termlist_end () ||
+ strncmp ((*i).c_str (), prefix, prefix_len))
+ break;
+
+ try {
+ message->doc.remove_term ((*i));
+ message->modified = TRUE;
+ } catch (const Xapian::InvalidArgumentError) {
+ /* Ignore failure to remove non-existent term. */
+ }
+ }
+}
+
+/* Return true if p points at "new" or "cur". */
+static bool is_maildir (const char *p)
+{
+ return strcmp (p, "cur") == 0 || strcmp (p, "new") == 0;
+}
+
+/* Add "folder:" term for directory. */
+static notmuch_status_t
+_notmuch_message_add_folder_terms (notmuch_message_t *message,
+ const char *directory)
+{
+ char *folder, *last;
+
+ folder = talloc_strdup (NULL, directory);
+ if (! folder)
+ return NOTMUCH_STATUS_OUT_OF_MEMORY;
+
+ /*
+ * If the message file is in a leaf directory named "new" or
+ * "cur", presume maildir and index the parent directory. Thus a
+ * "folder:" prefix search matches messages in the specified
+ * maildir folder, i.e. in the specified directory and its "new"
+ * and "cur" subdirectories.
+ *
+ * Note that this means the "folder:" prefix can't be used for
+ * distinguishing between message files in "new" or "cur". The
+ * "path:" prefix needs to be used for that.
+ *
+ * Note the deliberate difference to _filename_is_in_maildir(). We
+ * don't want to index different things depending on the existence
+ * or non-existence of all maildir sibling directories "new",
+ * "cur", and "tmp". Doing so would be surprising, and difficult
+ * for the user to fix in case all subdirectories were not in
+ * place during indexing.
+ */
+ last = strrchr (folder, '/');
+ if (last) {
+ if (is_maildir (last + 1))
+ *last = '\0';
+ } else if (is_maildir (folder)) {
+ *folder = '\0';
+ }
+
+ _notmuch_message_add_term (message, "folder", folder);
+
+ talloc_free (folder);
+
+ return NOTMUCH_STATUS_SUCCESS;
+}
+
+#define RECURSIVE_SUFFIX "/**"
+
+/* Add "path:" terms for directory. */
+static notmuch_status_t
+_notmuch_message_add_path_terms (notmuch_message_t *message,
+ const char *directory)
+{
+ /* Add exact "path:" term. */
+ _notmuch_message_add_term (message, "path", directory);
+
+ if (strlen (directory)) {
+ char *path, *p;
+
+ path = talloc_asprintf (NULL, "%s%s", directory, RECURSIVE_SUFFIX);
+ if (! path)
+ return NOTMUCH_STATUS_OUT_OF_MEMORY;
+
+ /* Add recursive "path:" terms for directory and all parents. */
+ for (p = path + strlen (path) - 1; p > path; p--) {
+ if (*p == '/') {
+ strcpy (p, RECURSIVE_SUFFIX);
+ _notmuch_message_add_term (message, "path", path);
+ }
+ }
+
+ talloc_free (path);
+ }
+
+ /* Recursive all-matching path:** for consistency. */
+ _notmuch_message_add_term (message, "path", "**");
+
+ return NOTMUCH_STATUS_SUCCESS;
+}
+
+/* Add directory based terms for all filenames of the message. */
+static notmuch_status_t
+_notmuch_message_add_directory_terms (void *ctx, notmuch_message_t *message)
+{
+ const char *direntry_prefix = _find_prefix ("file-direntry");
+ int direntry_prefix_len = strlen (direntry_prefix);
+ Xapian::TermIterator i = message->doc.termlist_begin ();
+ notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
+
+ for (i.skip_to (direntry_prefix); i != message->doc.termlist_end (); i++) {
+ unsigned int directory_id;
+ const char *direntry, *directory;
+ char *colon;
+ const std::string &term = *i;
+
+ /* Terminate loop at first term without desired prefix. */
+ if (strncmp (term.c_str (), direntry_prefix, direntry_prefix_len))
+ break;
+
+ /* Indicate that there are filenames remaining. */
+ status = NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID;
+
+ direntry = term.c_str ();
+ direntry += direntry_prefix_len;
+
+ directory_id = strtol (direntry, &colon, 10);
+
+ if (colon == NULL || *colon != ':')
+ INTERNAL_ERROR ("malformed direntry");
+
+ directory = _notmuch_database_get_directory_path (ctx,
+ message->notmuch,
+ directory_id);
+
+ _notmuch_message_add_folder_terms (message, directory);
+ _notmuch_message_add_path_terms (message, directory);
+ }
+
+ return status;
+}
+
/* Add an additional 'filename' for 'message'.
*
* This change will not be reflected in the database until the next
if (filename == NULL)
INTERNAL_ERROR ("Message filename cannot be NULL.");
+ if (! (message->notmuch->features & NOTMUCH_FEATURE_FILE_TERMS) ||
+ ! (message->notmuch->features & NOTMUCH_FEATURE_BOOL_FOLDER))
+ return NOTMUCH_STATUS_UPGRADE_REQUIRED;
+
relative = _notmuch_database_relative_path (message->notmuch, filename);
status = _notmuch_database_split_path (local, relative, &directory, NULL);
* notmuch_directory_get_child_files() . */
_notmuch_message_add_term (message, "file-direntry", direntry);
- /* New terms allow user to search with folder: specification. */
- _notmuch_message_gen_terms (message, "folder", directory);
+ _notmuch_message_add_folder_terms (message, directory);
+ _notmuch_message_add_path_terms (message, directory);
talloc_free (local);
* Note: This function does not remove a document from the database,
* even if the specified filename is the only filename for this
* message. For that functionality, see
- * _notmuch_database_remove_message. */
+ * notmuch_database_remove_message. */
notmuch_status_t
_notmuch_message_remove_filename (notmuch_message_t *message,
const char *filename)
{
- const char *direntry_prefix = _find_prefix ("file-direntry");
- int direntry_prefix_len = strlen (direntry_prefix);
- const char *folder_prefix = _find_prefix ("folder");
- int folder_prefix_len = strlen (folder_prefix);
void *local = talloc_new (message);
- char *zfolder_prefix = talloc_asprintf(local, "Z%s", folder_prefix);
- int zfolder_prefix_len = strlen (zfolder_prefix);
char *direntry;
notmuch_private_status_t private_status;
notmuch_status_t status;
- Xapian::TermIterator i, last;
+
+ if (! (message->notmuch->features & NOTMUCH_FEATURE_FILE_TERMS) ||
+ ! (message->notmuch->features & NOTMUCH_FEATURE_BOOL_FOLDER))
+ return NOTMUCH_STATUS_UPGRADE_REQUIRED;
status = _notmuch_database_filename_to_direntry (
local, message->notmuch, filename, NOTMUCH_FIND_LOOKUP, &direntry);
if (status)
return status;
- /* Re-synchronize "folder:" terms for this message. This requires:
- * 1. removing all "folder:" terms
- * 2. removing all "folder:" stemmed terms
- * 3. adding back terms for all remaining filenames of the message. */
+ /* Re-synchronize "folder:" and "path:" terms for this message. */
- /* 1. removing all "folder:" terms */
- while (1) {
- i = message->doc.termlist_begin ();
- i.skip_to (folder_prefix);
+ /* Remove all "folder:" terms. */
+ _notmuch_message_remove_terms (message, _find_prefix ("folder"));
- /* Terminate loop when no terms remain with desired prefix. */
- if (i == message->doc.termlist_end () ||
- strncmp ((*i).c_str (), folder_prefix, folder_prefix_len))
- {
- break;
- }
+ /* Remove all "path:" terms. */
+ _notmuch_message_remove_terms (message, _find_prefix ("path"));
- try {
- message->doc.remove_term ((*i));
- } catch (const Xapian::InvalidArgumentError) {
- /* Ignore failure to remove non-existent term. */
- }
- }
-
- /* 2. removing all "folder:" stemmed terms */
- while (1) {
- i = message->doc.termlist_begin ();
- i.skip_to (zfolder_prefix);
+ /* Add back terms for all remaining filenames of the message. */
+ status = _notmuch_message_add_directory_terms (local, message);
- /* Terminate loop when no terms remain with desired prefix. */
- if (i == message->doc.termlist_end () ||
- strncmp ((*i).c_str (), zfolder_prefix, zfolder_prefix_len))
- {
- break;
- }
-
- try {
- message->doc.remove_term ((*i));
- } catch (const Xapian::InvalidArgumentError) {
- /* Ignore failure to remove non-existent term. */
- }
- }
-
- /* 3. adding back terms for all remaining filenames of the message. */
- i = message->doc.termlist_begin ();
- i.skip_to (direntry_prefix);
-
- for (; i != message->doc.termlist_end (); i++) {
- unsigned int directory_id;
- const char *direntry, *directory;
- char *colon;
-
- /* Terminate loop at first term without desired prefix. */
- if (strncmp ((*i).c_str (), direntry_prefix, direntry_prefix_len))
- break;
-
- /* Indicate that there are filenames remaining. */
- status = NOTMUCH_STATUS_DUPLICATE_MESSAGE_ID;
-
- direntry = (*i).c_str ();
- direntry += direntry_prefix_len;
-
- directory_id = strtol (direntry, &colon, 10);
+ talloc_free (local);
- if (colon == NULL || *colon != ':')
- INTERNAL_ERROR ("malformed direntry");
+ return status;
+}
- directory = _notmuch_database_get_directory_path (local,
- message->notmuch,
- directory_id);
- if (strlen (directory))
- _notmuch_message_gen_terms (message, "folder", directory);
- }
+/* Upgrade the "folder:" prefix from V1 to V2. */
+#define FOLDER_PREFIX_V1 "XFOLDER"
+#define ZFOLDER_PREFIX_V1 "Z" FOLDER_PREFIX_V1
+void
+_notmuch_message_upgrade_folder (notmuch_message_t *message)
+{
+ /* Remove all old "folder:" terms. */
+ _notmuch_message_remove_terms (message, FOLDER_PREFIX_V1);
- talloc_free (local);
+ /* Remove all old "folder:" stemmed terms. */
+ _notmuch_message_remove_terms (message, ZFOLDER_PREFIX_V1);
- return status;
+ /* Add new boolean "folder:" and "path:" terms. */
+ _notmuch_message_add_directory_terms (message, message);
}
char *
_notmuch_message_clear_data (notmuch_message_t *message)
{
message->doc.set_data ("");
+ message->modified = TRUE;
}
static void
notmuch_message_get_flag (notmuch_message_t *message,
notmuch_message_flag_t flag)
{
- return message->flags & (1 << flag);
+ if (flag == NOTMUCH_MESSAGE_FLAG_GHOST &&
+ ! NOTMUCH_TEST_BIT (message->lazy_flags, flag))
+ _notmuch_message_ensure_metadata (message);
+
+ return NOTMUCH_TEST_BIT (message->flags, flag);
}
void
notmuch_message_flag_t flag, notmuch_bool_t enable)
{
if (enable)
- message->flags |= (1 << flag);
+ NOTMUCH_SET_BIT (&message->flags, flag);
else
- message->flags &= ~(1 << flag);
+ NOTMUCH_CLEAR_BIT (&message->flags, flag);
+ NOTMUCH_SET_BIT (&message->lazy_flags, flag);
}
time_t
try {
value = message->doc.get_value (NOTMUCH_VALUE_TIMESTAMP);
} catch (Xapian::Error &error) {
- INTERNAL_ERROR ("Failed to read timestamp value from document.");
+ _notmuch_database_log(_notmuch_message_database (message), "A Xapian exception occurred when reading date: %s\n",
+ error.get_msg().c_str());
+ message->notmuch->exception_reported = TRUE;
return 0;
}
+ if (value.empty ())
+ /* sortable_unserialise is undefined on empty string */
+ return 0;
return Xapian::sortable_unserialise (value);
}
}
const char *
-notmuch_message_get_author (notmuch_message_t *message)
+_notmuch_message_get_author (notmuch_message_t *message)
{
return message->author;
}
void
-notmuch_message_set_author (notmuch_message_t *message,
+_notmuch_message_set_author (notmuch_message_t *message,
const char *author)
{
if (message->author)
Xapian::sortable_serialise (time_value));
message->doc.add_value (NOTMUCH_VALUE_FROM, from);
message->doc.add_value (NOTMUCH_VALUE_SUBJECT, subject);
+ message->modified = TRUE;
+}
+
+/* Upgrade a message to support NOTMUCH_FEATURE_LAST_MOD. The caller
+ * must call _notmuch_message_sync. */
+void
+_notmuch_message_upgrade_last_mod (notmuch_message_t *message)
+{
+ /* _notmuch_message_sync will update the last modification
+ * revision; we just have to ask it to. */
+ message->modified = TRUE;
}
/* Synchronize changes made to message->doc out into the database. */
if (message->notmuch->mode == NOTMUCH_DATABASE_MODE_READ_ONLY)
return;
+ if (! message->modified)
+ return;
+
+ /* Update the last modification of this message. */
+ if (message->notmuch->features & NOTMUCH_FEATURE_LAST_MOD)
+ /* sortable_serialise gives a reasonably compact encoding,
+ * which directly translates to reduced IO when scanning the
+ * value stream. Since it's built for doubles, we only get 53
+ * effective bits, but that's still enough for the database to
+ * last a few centuries at 1 million revisions per second. */
+ message->doc.add_value (NOTMUCH_VALUE_LAST_MOD,
+ Xapian::sortable_serialise (
+ _notmuch_database_new_revision (
+ message->notmuch)));
+
db = static_cast <Xapian::WritableDatabase *> (message->notmuch->xapian_db);
db->replace_document (message->doc_id, message->doc);
+ message->modified = FALSE;
}
/* Delete a message document from the database. */
return NOTMUCH_STATUS_SUCCESS;
}
+/* Transform a blank message into a ghost message. The caller must
+ * _notmuch_message_sync the message. */
+notmuch_private_status_t
+_notmuch_message_initialize_ghost (notmuch_message_t *message,
+ const char *thread_id)
+{
+ notmuch_private_status_t status;
+
+ status = _notmuch_message_add_term (message, "type", "ghost");
+ if (status)
+ return status;
+ status = _notmuch_message_add_term (message, "thread", thread_id);
+ if (status)
+ return status;
+
+ return NOTMUCH_PRIVATE_STATUS_SUCCESS;
+}
+
/* Ensure that 'message' is not holding any file object open. Future
* calls to various functions will still automatically open the
* message file as needed.
_notmuch_message_close (notmuch_message_t *message)
{
if (message->message_file) {
- notmuch_message_file_close (message->message_file);
+ _notmuch_message_file_close (message->message_file);
message->message_file = NULL;
}
}
return NOTMUCH_PRIVATE_STATUS_TERM_TOO_LONG;
message->doc.add_term (term, 0);
+ message->modified = TRUE;
talloc_free (term);
return NOTMUCH_PRIVATE_STATUS_NULL_POINTER;
term_gen->set_document (message->doc);
- term_gen->set_termpos (message->termpos);
if (prefix_name) {
const char *prefix = _find_prefix (prefix_name);
+ term_gen->set_termpos (message->termpos);
term_gen->index_text (text, 1, prefix);
- message->termpos = term_gen->get_termpos ();
+ /* Create a gap between this an the next terms so they don't
+ * appear to be a phrase. */
+ message->termpos = term_gen->get_termpos () + 100;
+
+ _notmuch_message_invalidate_metadata (message, prefix_name);
}
+ term_gen->set_termpos (message->termpos);
term_gen->index_text (text);
+ /* Create a term gap, as above. */
+ message->termpos = term_gen->get_termpos () + 100;
return NOTMUCH_PRIVATE_STATUS_SUCCESS;
}
try {
message->doc.remove_term (term);
+ message->modified = TRUE;
} catch (const Xapian::InvalidArgumentError) {
- /* We'll let the philosopher's try to wrestle with the
+ /* We'll let the philosophers try to wrestle with the
* question of whether failing to remove that which was not
* there in the first place is failure. For us, we'll silently
* consider it all good. */
* compute the new maildir filename.
*
* If the existing filename is in the directory "new", the new
- * filename will be in the directory "cur".
+ * filename will be in the directory "cur", except for the case when
+ * no flags are changed and the existing filename does not contain
+ * maildir info (starting with ",2:").
*
* After a sequence of ":2," in the filename, any subsequent
* single-character flags will be added or removed according to the
char *filename_new, *dir;
char flag_map[128];
int flags_in_map = 0;
+ notmuch_bool_t flags_changed = FALSE;
unsigned int i;
char *s;
if (flag_map[flag] == 0) {
flag_map[flag] = 1;
flags_in_map++;
+ flags_changed = TRUE;
}
}
if (flag_map[flag]) {
flag_map[flag] = 0;
flags_in_map--;
+ flags_changed = TRUE;
}
}
+ /* Messages in new/ without maildir info can be kept in new/ if no
+ * flags have changed. */
+ dir = (char *) _filename_is_in_maildir (filename);
+ if (dir && STRNCMP_LITERAL (dir, "new/") == 0 && !*info && !flags_changed)
+ return talloc_strdup (ctx, filename);
+
filename_new = (char *) talloc_size (ctx,
info - filename +
strlen (":2,") + flags_in_map + 1);
talloc_free (to_set);
talloc_free (to_clear);
- return NOTMUCH_STATUS_SUCCESS;
+ return status;
}
notmuch_status_t
{
talloc_free (message);
}
+
+notmuch_database_t *
+_notmuch_message_database (notmuch_message_t *message)
+{
+ return message->notmuch;
+}
projects / notmuch / blobdiff