mirror of
https://git.notmuchmail.org/git/notmuch
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4743e87c2c
The main goal is to allow configuration information to be temporarily overridden by a separate config file. That will require further changes not in this commit. The performance impact is unclear, and will depend on the balance between number of queries and number of distinct metadata items read on the first call to n_d_get_config.
210 lines
7.3 KiB
C++
210 lines
7.3 KiB
C++
#include "database-private.h"
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#include "query-fp.h"
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#include "thread-fp.h"
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#include "regexp-fields.h"
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#include "parse-time-vrp.h"
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typedef struct {
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const char *name;
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const char *prefix;
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notmuch_field_flag_t flags;
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} prefix_t;
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/* With these prefix values we follow the conventions published here:
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*
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* https://xapian.org/docs/omega/termprefixes.html
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*
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* as much as makes sense. Note that I took some liberty in matching
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* the reserved prefix values to notmuch concepts, (for example, 'G'
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* is documented as "newsGroup (or similar entity - e.g. a web forum
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* name)", for which I think the thread is the closest analogue in
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* notmuch. This in spite of the fact that we will eventually be
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* storing mailing-list messages where 'G' for "mailing list name"
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* might be even a closer analogue. I'm treating the single-character
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* prefixes preferentially for core notmuch concepts (which will be
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* nearly universal to all mail messages).
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*/
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static const
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prefix_t prefix_table[] = {
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/* name term prefix flags */
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{ "type", "T", NOTMUCH_FIELD_NO_FLAGS },
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{ "reference", "XREFERENCE", NOTMUCH_FIELD_NO_FLAGS },
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{ "replyto", "XREPLYTO", NOTMUCH_FIELD_NO_FLAGS },
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{ "directory", "XDIRECTORY", NOTMUCH_FIELD_NO_FLAGS },
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{ "file-direntry", "XFDIRENTRY", NOTMUCH_FIELD_NO_FLAGS },
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{ "directory-direntry", "XDDIRENTRY", NOTMUCH_FIELD_NO_FLAGS },
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{ "body", "", NOTMUCH_FIELD_EXTERNAL |
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NOTMUCH_FIELD_PROBABILISTIC },
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{ "thread", "G", NOTMUCH_FIELD_EXTERNAL |
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NOTMUCH_FIELD_PROCESSOR },
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{ "tag", "K", NOTMUCH_FIELD_EXTERNAL |
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NOTMUCH_FIELD_PROCESSOR },
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{ "is", "K", NOTMUCH_FIELD_EXTERNAL |
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NOTMUCH_FIELD_PROCESSOR },
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{ "id", "Q", NOTMUCH_FIELD_EXTERNAL },
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{ "mid", "Q", NOTMUCH_FIELD_EXTERNAL |
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NOTMUCH_FIELD_PROCESSOR },
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{ "path", "P", NOTMUCH_FIELD_EXTERNAL |
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NOTMUCH_FIELD_PROCESSOR },
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{ "property", "XPROPERTY", NOTMUCH_FIELD_EXTERNAL },
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/*
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* Unconditionally add ':' to reduce potential ambiguity with
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* overlapping prefixes and/or terms that start with capital
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* letters. See Xapian document termprefixes.html for related
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* discussion.
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*/
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{ "folder", "XFOLDER:", NOTMUCH_FIELD_EXTERNAL |
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NOTMUCH_FIELD_PROCESSOR },
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{ "date", NULL, NOTMUCH_FIELD_EXTERNAL |
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NOTMUCH_FIELD_PROCESSOR },
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{ "query", NULL, NOTMUCH_FIELD_EXTERNAL |
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NOTMUCH_FIELD_PROCESSOR },
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{ "from", "XFROM", NOTMUCH_FIELD_EXTERNAL |
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NOTMUCH_FIELD_PROBABILISTIC |
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NOTMUCH_FIELD_PROCESSOR },
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{ "to", "XTO", NOTMUCH_FIELD_EXTERNAL |
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NOTMUCH_FIELD_PROBABILISTIC },
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{ "attachment", "XATTACHMENT", NOTMUCH_FIELD_EXTERNAL |
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NOTMUCH_FIELD_PROBABILISTIC },
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{ "mimetype", "XMIMETYPE", NOTMUCH_FIELD_EXTERNAL |
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NOTMUCH_FIELD_PROBABILISTIC },
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{ "subject", "XSUBJECT", NOTMUCH_FIELD_EXTERNAL |
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NOTMUCH_FIELD_PROBABILISTIC |
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NOTMUCH_FIELD_PROCESSOR },
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};
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static const char *
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_user_prefix (void *ctx, const char *name)
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{
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return talloc_asprintf (ctx, "XU%s:", name);
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}
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const char *
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_find_prefix (const char *name)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE (prefix_table); i++) {
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if (strcmp (name, prefix_table[i].name) == 0)
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return prefix_table[i].prefix;
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}
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INTERNAL_ERROR ("No prefix exists for '%s'\n", name);
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return "";
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}
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/* Like find prefix, but include the possibility of user defined
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* prefixes specific to this database */
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const char *
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_notmuch_database_prefix (notmuch_database_t *notmuch, const char *name)
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{
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unsigned int i;
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/*XXX TODO: reduce code duplication */
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for (i = 0; i < ARRAY_SIZE (prefix_table); i++) {
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if (strcmp (name, prefix_table[i].name) == 0)
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return prefix_table[i].prefix;
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}
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if (notmuch->user_prefix)
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return _notmuch_string_map_get (notmuch->user_prefix, name);
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return NULL;
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}
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static void
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_setup_query_field_default (const prefix_t *prefix, notmuch_database_t *notmuch)
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{
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if (prefix->prefix)
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notmuch->query_parser->add_prefix ("", prefix->prefix);
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if (prefix->flags & NOTMUCH_FIELD_PROBABILISTIC)
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notmuch->query_parser->add_prefix (prefix->name, prefix->prefix);
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else
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notmuch->query_parser->add_boolean_prefix (prefix->name, prefix->prefix);
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}
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static void
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_setup_query_field (const prefix_t *prefix, notmuch_database_t *notmuch)
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{
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if (prefix->flags & NOTMUCH_FIELD_PROCESSOR) {
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Xapian::FieldProcessor *fp;
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if (STRNCMP_LITERAL (prefix->name, "date") == 0)
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fp = (new DateFieldProcessor(NOTMUCH_VALUE_TIMESTAMP))->release ();
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else if (STRNCMP_LITERAL(prefix->name, "query") == 0)
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fp = (new QueryFieldProcessor (*notmuch->query_parser, notmuch))->release ();
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else if (STRNCMP_LITERAL (prefix->name, "thread") == 0)
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fp = (new ThreadFieldProcessor (*notmuch->query_parser, notmuch))->release ();
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else
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fp = (new RegexpFieldProcessor (prefix->name, prefix->flags,
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*notmuch->query_parser, notmuch))->release ();
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/* we treat all field-processor fields as boolean in order to get the raw input */
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if (prefix->prefix)
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notmuch->query_parser->add_prefix ("", prefix->prefix);
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notmuch->query_parser->add_boolean_prefix (prefix->name, fp);
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} else {
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_setup_query_field_default (prefix, notmuch);
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}
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}
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notmuch_status_t
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_notmuch_database_setup_standard_query_fields (notmuch_database_t *notmuch)
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{
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for (unsigned int i = 0; i < ARRAY_SIZE (prefix_table); i++) {
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const prefix_t *prefix = &prefix_table[i];
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if (prefix->flags & NOTMUCH_FIELD_EXTERNAL) {
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_setup_query_field (prefix, notmuch);
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}
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}
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return NOTMUCH_STATUS_SUCCESS;
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}
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notmuch_status_t
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_notmuch_database_setup_user_query_fields (notmuch_database_t *notmuch)
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{
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notmuch_string_map_iterator_t *list;
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notmuch->user_prefix = _notmuch_string_map_create (notmuch);
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if (notmuch->user_prefix == NULL)
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return NOTMUCH_STATUS_OUT_OF_MEMORY;
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notmuch->user_header = _notmuch_string_map_create (notmuch);
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if (notmuch->user_header == NULL)
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return NOTMUCH_STATUS_OUT_OF_MEMORY;
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list = _notmuch_string_map_iterator_create (notmuch->config, CONFIG_HEADER_PREFIX, FALSE);
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if (! list)
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INTERNAL_ERROR ("unable to read headers from configuration");
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for (; _notmuch_string_map_iterator_valid (list);
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_notmuch_string_map_iterator_move_to_next (list)) {
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prefix_t query_field;
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const char *key = _notmuch_string_map_iterator_key (list)
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+ sizeof (CONFIG_HEADER_PREFIX) - 1;
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_notmuch_string_map_append (notmuch->user_prefix,
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key,
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_user_prefix (notmuch, key));
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_notmuch_string_map_append (notmuch->user_header,
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key,
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_notmuch_string_map_iterator_value (list));
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query_field.name = talloc_strdup (notmuch, key);
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query_field.prefix = _user_prefix (notmuch, key);
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query_field.flags = NOTMUCH_FIELD_PROBABILISTIC
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| NOTMUCH_FIELD_EXTERNAL;
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_setup_query_field_default (&query_field, notmuch);
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}
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_notmuch_string_map_iterator_destroy (list);
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return NOTMUCH_STATUS_SUCCESS;
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}
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