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c3c52e464b
This patch adds a new function called notmuch_database_get_all_tags which can be used to obtain a list of all tags from the database (in other words, the list contains all tags from all messages). The function produces an alphabetically sorted list. To add support for the new function, we rip the guts off of notmuch_message_get_tags and put them in a new generic function called _notmuch_convert_tags. The generic function takes a Xapian::TermIterator as argument and uses the iterator to find tags. This makes the function usable with different Xapian objects. Function notmuch_message_get_tags is then reimplemented to call the generic function with message->doc.termlist_begin() as argument. Similarly, we implement notmuch_message_database_get_all_tags, the function calls the generic function with db->xapian_db->allterms_begin() as argument. Finally, notmuch_database_get_all_tags is exported through lib/notmuch.h Signed-off-by: Jan Janak <jan@ryngle.com>
51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
/* database-private.h - For peeking into the internals of notmuch_database_t
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*
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* Copyright © 2009 Carl Worth
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see http://www.gnu.org/licenses/ .
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*
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* Author: Carl Worth <cworth@cworth.org>
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*/
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#ifndef NOTMUCH_DATABASE_PRIVATE_H
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#define NOTMUCH_DATABASE_PRIVATE_H
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#include "notmuch-private.h"
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#include <xapian.h>
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struct _notmuch_database {
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notmuch_bool_t exception_reported;
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char *path;
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notmuch_database_mode_t mode;
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Xapian::Database *xapian_db;
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Xapian::QueryParser *query_parser;
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Xapian::TermGenerator *term_gen;
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Xapian::ValueRangeProcessor *value_range_processor;
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};
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/* Convert tags from Xapian internal format to notmuch format.
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*
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* The function gets a TermIterator as argument and uses that iterator to find
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* all tag terms in the object. The tags are then converted to a
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* notmuch_tags_t list and returned. The function needs to allocate memory for
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* the resulting list and it uses the argument ctx as talloc context.
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*
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* The function returns NULL on failure.
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*/
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notmuch_tags_t *
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_notmuch_convert_tags (void *ctx, Xapian::TermIterator &i,
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Xapian::TermIterator &end);
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#endif
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