From: Tomi Ollila <tomi.ollila@iki.fi>
To: David Bremner <david@tethera.net>, notmuch@notmuchmail.org
Cc: David Bremner <david@tethera.net>
Subject: Re: [PATCH 3/6] lib: factor out prefix related code to its own file
Date: Sun, 20 Dec 2020 17:36:50 +0200 [thread overview]
Message-ID: <m2a6u8a3ql.fsf@guru.guru-group.fi> (raw)
In-Reply-To: <20201220121024.1122362-4-david@tethera.net>
On Sun, Dec 20 2020, David Bremner wrote:
> Reduce the size of database.cc, and limit the scope of prefix_table,
> make sure it's accessed via a well-defined internal API.
> ---
> lib/Makefile.local | 4 +-
> lib/database-private.h | 7 ++
> lib/database.cc | 203 ++-------------------------------------
> lib/prefix.cc | 210 +++++++++++++++++++++++++++++++++++++++++
> 4 files changed, 229 insertions(+), 195 deletions(-)
> create mode 100644 lib/prefix.cc
>
> diff --git a/lib/Makefile.local b/lib/Makefile.local
> index 04418fa8..3aa9e80f 100644
> --- a/lib/Makefile.local
> +++ b/lib/Makefile.local
> @@ -60,7 +60,9 @@ libnotmuch_cxx_srcs = \
> $(dir)/regexp-fields.cc \
> $(dir)/thread.cc \
> $(dir)/thread-fp.cc \
> - $(dir)/features.cc
> + $(dir)/features.cc \
> + $(dir)/prefix.cc
> +
Good stuff! is this extra line above intentional ?
(otherwise I did not find anything else, but I may have
got tired looking through the series ;/)
Tomi
>
> libnotmuch_modules := $(libnotmuch_c_srcs:.c=.o) $(libnotmuch_cxx_srcs:.cc=.o)
>
> diff --git a/lib/database-private.h b/lib/database-private.h
> index 2d220811..c9bc712b 100644
> --- a/lib/database-private.h
> +++ b/lib/database-private.h
> @@ -277,4 +277,11 @@ _notmuch_database_parse_features (const void *ctx, const char *features, unsigne
> char *
> _notmuch_database_print_features (const void *ctx, unsigned int features);
>
> +/* prefix.cc */
> +notmuch_status_t
> +_notmuch_database_setup_standard_query_fields (notmuch_database_t *notmuch);
> +
> +notmuch_status_t
> +_notmuch_database_setup_user_query_fields (notmuch_database_t *notmuch);
> +
> #endif
> diff --git a/lib/database.cc b/lib/database.cc
> index 4a477bd7..defa3062 100644
> --- a/lib/database.cc
> +++ b/lib/database.cc
> @@ -263,80 +263,6 @@ _notmuch_database_mode (notmuch_database_t *notmuch)
> * same thread.
> */
>
> -/* With these prefix values we follow the conventions published here:
> - *
> - * https://xapian.org/docs/omega/termprefixes.html
> - *
> - * as much as makes sense. Note that I took some liberty in matching
> - * the reserved prefix values to notmuch concepts, (for example, 'G'
> - * is documented as "newsGroup (or similar entity - e.g. a web forum
> - * name)", for which I think the thread is the closest analogue in
> - * notmuch. This in spite of the fact that we will eventually be
> - * storing mailing-list messages where 'G' for "mailing list name"
> - * might be even a closer analogue. I'm treating the single-character
> - * prefixes preferentially for core notmuch concepts (which will be
> - * nearly universal to all mail messages).
> - */
> -
> -static const
> -prefix_t prefix_table[] = {
> - /* name term prefix flags */
> - { "type", "T", NOTMUCH_FIELD_NO_FLAGS },
> - { "reference", "XREFERENCE", NOTMUCH_FIELD_NO_FLAGS },
> - { "replyto", "XREPLYTO", NOTMUCH_FIELD_NO_FLAGS },
> - { "directory", "XDIRECTORY", NOTMUCH_FIELD_NO_FLAGS },
> - { "file-direntry", "XFDIRENTRY", NOTMUCH_FIELD_NO_FLAGS },
> - { "directory-direntry", "XDDIRENTRY", NOTMUCH_FIELD_NO_FLAGS },
> - { "body", "", NOTMUCH_FIELD_EXTERNAL |
> - NOTMUCH_FIELD_PROBABILISTIC },
> - { "thread", "G", NOTMUCH_FIELD_EXTERNAL |
> - NOTMUCH_FIELD_PROCESSOR },
> - { "tag", "K", NOTMUCH_FIELD_EXTERNAL |
> - NOTMUCH_FIELD_PROCESSOR },
> - { "is", "K", NOTMUCH_FIELD_EXTERNAL |
> - NOTMUCH_FIELD_PROCESSOR },
> - { "id", "Q", NOTMUCH_FIELD_EXTERNAL },
> - { "mid", "Q", NOTMUCH_FIELD_EXTERNAL |
> - NOTMUCH_FIELD_PROCESSOR },
> - { "path", "P", NOTMUCH_FIELD_EXTERNAL |
> - NOTMUCH_FIELD_PROCESSOR },
> - { "property", "XPROPERTY", NOTMUCH_FIELD_EXTERNAL },
> - /*
> - * Unconditionally add ':' to reduce potential ambiguity with
> - * overlapping prefixes and/or terms that start with capital
> - * letters. See Xapian document termprefixes.html for related
> - * discussion.
> - */
> - { "folder", "XFOLDER:", NOTMUCH_FIELD_EXTERNAL |
> - NOTMUCH_FIELD_PROCESSOR },
> - { "date", NULL, NOTMUCH_FIELD_EXTERNAL |
> - NOTMUCH_FIELD_PROCESSOR },
> - { "query", NULL, NOTMUCH_FIELD_EXTERNAL |
> - NOTMUCH_FIELD_PROCESSOR },
> - { "from", "XFROM", NOTMUCH_FIELD_EXTERNAL |
> - NOTMUCH_FIELD_PROBABILISTIC |
> - NOTMUCH_FIELD_PROCESSOR },
> - { "to", "XTO", NOTMUCH_FIELD_EXTERNAL |
> - NOTMUCH_FIELD_PROBABILISTIC },
> - { "attachment", "XATTACHMENT", NOTMUCH_FIELD_EXTERNAL |
> - NOTMUCH_FIELD_PROBABILISTIC },
> - { "mimetype", "XMIMETYPE", NOTMUCH_FIELD_EXTERNAL |
> - NOTMUCH_FIELD_PROBABILISTIC },
> - { "subject", "XSUBJECT", NOTMUCH_FIELD_EXTERNAL |
> - NOTMUCH_FIELD_PROBABILISTIC |
> - NOTMUCH_FIELD_PROCESSOR },
> -};
> -
> -static void
> -_setup_query_field_default (const prefix_t *prefix, notmuch_database_t *notmuch)
> -{
> - if (prefix->prefix)
> - notmuch->query_parser->add_prefix ("", prefix->prefix);
> - if (prefix->flags & NOTMUCH_FIELD_PROBABILISTIC)
> - notmuch->query_parser->add_prefix (prefix->name, prefix->prefix);
> - else
> - notmuch->query_parser->add_boolean_prefix (prefix->name, prefix->prefix);
> -}
>
> notmuch_string_map_iterator_t *
> _notmuch_database_user_headers (notmuch_database_t *notmuch)
> @@ -344,118 +270,6 @@ _notmuch_database_user_headers (notmuch_database_t *notmuch)
> return _notmuch_string_map_iterator_create (notmuch->user_header, "", false);
> }
>
> -const char *
> -_user_prefix (void *ctx, const char *name)
> -{
> - return talloc_asprintf (ctx, "XU%s:", name);
> -}
> -
> -static notmuch_status_t
> -_setup_user_query_fields (notmuch_database_t *notmuch)
> -{
> - notmuch_config_list_t *list;
> - notmuch_status_t status;
> -
> - notmuch->user_prefix = _notmuch_string_map_create (notmuch);
> - if (notmuch->user_prefix == NULL)
> - return NOTMUCH_STATUS_OUT_OF_MEMORY;
> -
> - notmuch->user_header = _notmuch_string_map_create (notmuch);
> - if (notmuch->user_header == NULL)
> - return NOTMUCH_STATUS_OUT_OF_MEMORY;
> -
> - status = notmuch_database_get_config_list (notmuch, CONFIG_HEADER_PREFIX, &list);
> - if (status)
> - return status;
> -
> - for (; notmuch_config_list_valid (list); notmuch_config_list_move_to_next (list)) {
> -
> - prefix_t query_field;
> -
> - const char *key = notmuch_config_list_key (list)
> - + sizeof (CONFIG_HEADER_PREFIX) - 1;
> -
> - _notmuch_string_map_append (notmuch->user_prefix,
> - key,
> - _user_prefix (notmuch, key));
> -
> - _notmuch_string_map_append (notmuch->user_header,
> - key,
> - notmuch_config_list_value (list));
> -
> - query_field.name = talloc_strdup (notmuch, key);
> - query_field.prefix = _user_prefix (notmuch, key);
> - query_field.flags = NOTMUCH_FIELD_PROBABILISTIC
> - | NOTMUCH_FIELD_EXTERNAL;
> -
> - _setup_query_field_default (&query_field, notmuch);
> - }
> -
> - notmuch_config_list_destroy (list);
> -
> - return NOTMUCH_STATUS_SUCCESS;
> -}
> -
> -static void
> -_setup_query_field (const prefix_t *prefix, notmuch_database_t *notmuch)
> -{
> - if (prefix->flags & NOTMUCH_FIELD_PROCESSOR) {
> - Xapian::FieldProcessor *fp;
> -
> - if (STRNCMP_LITERAL (prefix->name, "date") == 0)
> - fp = (new DateFieldProcessor(NOTMUCH_VALUE_TIMESTAMP))->release ();
> - else if (STRNCMP_LITERAL(prefix->name, "query") == 0)
> - fp = (new QueryFieldProcessor (*notmuch->query_parser, notmuch))->release ();
> - else if (STRNCMP_LITERAL (prefix->name, "thread") == 0)
> - fp = (new ThreadFieldProcessor (*notmuch->query_parser, notmuch))->release ();
> - else
> - fp = (new RegexpFieldProcessor (prefix->name, prefix->flags,
> - *notmuch->query_parser, notmuch))->release ();
> -
> - /* we treat all field-processor fields as boolean in order to get the raw input */
> - if (prefix->prefix)
> - notmuch->query_parser->add_prefix ("", prefix->prefix);
> - notmuch->query_parser->add_boolean_prefix (prefix->name, fp);
> - } else {
> - _setup_query_field_default (prefix, notmuch);
> - }
> -}
> -
> -const char *
> -_find_prefix (const char *name)
> -{
> - unsigned int i;
> -
> - for (i = 0; i < ARRAY_SIZE (prefix_table); i++) {
> - if (strcmp (name, prefix_table[i].name) == 0)
> - return prefix_table[i].prefix;
> - }
> -
> - INTERNAL_ERROR ("No prefix exists for '%s'\n", name);
> -
> - return "";
> -}
> -
> -/* Like find prefix, but include the possibility of user defined
> - * prefixes specific to this database */
> -
> -const char *
> -_notmuch_database_prefix (notmuch_database_t *notmuch, const char *name)
> -{
> - unsigned int i;
> -
> - /*XXX TODO: reduce code duplication */
> - for (i = 0; i < ARRAY_SIZE (prefix_table); i++) {
> - if (strcmp (name, prefix_table[i].name) == 0)
> - return prefix_table[i].prefix;
> - }
> -
> - if (notmuch->user_prefix)
> - return _notmuch_string_map_get (notmuch->user_prefix, name);
> -
> - return NULL;
> -}
> -
> const char *
> notmuch_status_to_string (notmuch_status_t status)
> {
> @@ -898,7 +712,7 @@ notmuch_database_open_verbose (const char *path,
>
> /* Check features. */
> incompat_features = NULL;
> - notmuch->features = _parse_features (
> + notmuch->features = _notmuch_database_parse_features (
> local, notmuch->xapian_db->get_metadata ("features").c_str (),
> version, mode == NOTMUCH_DATABASE_MODE_READ_WRITE ? 'w' : 'r',
> &incompat_features);
> @@ -952,13 +766,14 @@ notmuch_database_open_verbose (const char *path,
> notmuch->query_parser->add_rangeprocessor (notmuch->date_range_processor);
> notmuch->query_parser->add_rangeprocessor (notmuch->last_mod_range_processor);
>
> - for (i = 0; i < ARRAY_SIZE (prefix_table); i++) {
> - const prefix_t *prefix = &prefix_table[i];
> - if (prefix->flags & NOTMUCH_FIELD_EXTERNAL) {
> - _setup_query_field (prefix, notmuch);
> - }
> - }
> - status = _setup_user_query_fields (notmuch);
> + status = _notmuch_database_setup_standard_query_fields (notmuch);
> + if (status)
> + goto DONE;
> +
> + status = _notmuch_database_setup_user_query_fields (notmuch);
> + if (status)
> + goto DONE;
> +
> } catch (const Xapian::Error &error) {
> IGNORE_RESULT (asprintf (&message, "A Xapian exception occurred opening database: %s\n",
> error.get_msg ().c_str ()));
> diff --git a/lib/prefix.cc b/lib/prefix.cc
> new file mode 100644
> index 00000000..dd7b193d
> --- /dev/null
> +++ b/lib/prefix.cc
> @@ -0,0 +1,210 @@
> +#include "database-private.h"
> +#include "query-fp.h"
> +#include "thread-fp.h"
> +#include "regexp-fields.h"
> +#include "parse-time-vrp.h"
> +
> +typedef struct {
> + const char *name;
> + const char *prefix;
> + notmuch_field_flag_t flags;
> +} prefix_t;
> +
> +/* With these prefix values we follow the conventions published here:
> + *
> + * https://xapian.org/docs/omega/termprefixes.html
> + *
> + * as much as makes sense. Note that I took some liberty in matching
> + * the reserved prefix values to notmuch concepts, (for example, 'G'
> + * is documented as "newsGroup (or similar entity - e.g. a web forum
> + * name)", for which I think the thread is the closest analogue in
> + * notmuch. This in spite of the fact that we will eventually be
> + * storing mailing-list messages where 'G' for "mailing list name"
> + * might be even a closer analogue. I'm treating the single-character
> + * prefixes preferentially for core notmuch concepts (which will be
> + * nearly universal to all mail messages).
> + */
> +
> +static const
> +prefix_t prefix_table[] = {
> + /* name term prefix flags */
> + { "type", "T", NOTMUCH_FIELD_NO_FLAGS },
> + { "reference", "XREFERENCE", NOTMUCH_FIELD_NO_FLAGS },
> + { "replyto", "XREPLYTO", NOTMUCH_FIELD_NO_FLAGS },
> + { "directory", "XDIRECTORY", NOTMUCH_FIELD_NO_FLAGS },
> + { "file-direntry", "XFDIRENTRY", NOTMUCH_FIELD_NO_FLAGS },
> + { "directory-direntry", "XDDIRENTRY", NOTMUCH_FIELD_NO_FLAGS },
> + { "body", "", NOTMUCH_FIELD_EXTERNAL |
> + NOTMUCH_FIELD_PROBABILISTIC },
> + { "thread", "G", NOTMUCH_FIELD_EXTERNAL |
> + NOTMUCH_FIELD_PROCESSOR },
> + { "tag", "K", NOTMUCH_FIELD_EXTERNAL |
> + NOTMUCH_FIELD_PROCESSOR },
> + { "is", "K", NOTMUCH_FIELD_EXTERNAL |
> + NOTMUCH_FIELD_PROCESSOR },
> + { "id", "Q", NOTMUCH_FIELD_EXTERNAL },
> + { "mid", "Q", NOTMUCH_FIELD_EXTERNAL |
> + NOTMUCH_FIELD_PROCESSOR },
> + { "path", "P", NOTMUCH_FIELD_EXTERNAL |
> + NOTMUCH_FIELD_PROCESSOR },
> + { "property", "XPROPERTY", NOTMUCH_FIELD_EXTERNAL },
> + /*
> + * Unconditionally add ':' to reduce potential ambiguity with
> + * overlapping prefixes and/or terms that start with capital
> + * letters. See Xapian document termprefixes.html for related
> + * discussion.
> + */
> + { "folder", "XFOLDER:", NOTMUCH_FIELD_EXTERNAL |
> + NOTMUCH_FIELD_PROCESSOR },
> + { "date", NULL, NOTMUCH_FIELD_EXTERNAL |
> + NOTMUCH_FIELD_PROCESSOR },
> + { "query", NULL, NOTMUCH_FIELD_EXTERNAL |
> + NOTMUCH_FIELD_PROCESSOR },
> + { "from", "XFROM", NOTMUCH_FIELD_EXTERNAL |
> + NOTMUCH_FIELD_PROBABILISTIC |
> + NOTMUCH_FIELD_PROCESSOR },
> + { "to", "XTO", NOTMUCH_FIELD_EXTERNAL |
> + NOTMUCH_FIELD_PROBABILISTIC },
> + { "attachment", "XATTACHMENT", NOTMUCH_FIELD_EXTERNAL |
> + NOTMUCH_FIELD_PROBABILISTIC },
> + { "mimetype", "XMIMETYPE", NOTMUCH_FIELD_EXTERNAL |
> + NOTMUCH_FIELD_PROBABILISTIC },
> + { "subject", "XSUBJECT", NOTMUCH_FIELD_EXTERNAL |
> + NOTMUCH_FIELD_PROBABILISTIC |
> + NOTMUCH_FIELD_PROCESSOR },
> +};
> +
> +static const char *
> +_user_prefix (void *ctx, const char *name)
> +{
> + return talloc_asprintf (ctx, "XU%s:", name);
> +}
> +
> +const char *
> +_find_prefix (const char *name)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE (prefix_table); i++) {
> + if (strcmp (name, prefix_table[i].name) == 0)
> + return prefix_table[i].prefix;
> + }
> +
> + INTERNAL_ERROR ("No prefix exists for '%s'\n", name);
> +
> + return "";
> +}
> +
> +/* Like find prefix, but include the possibility of user defined
> + * prefixes specific to this database */
> +
> +const char *
> +_notmuch_database_prefix (notmuch_database_t *notmuch, const char *name)
> +{
> + unsigned int i;
> +
> + /*XXX TODO: reduce code duplication */
> + for (i = 0; i < ARRAY_SIZE (prefix_table); i++) {
> + if (strcmp (name, prefix_table[i].name) == 0)
> + return prefix_table[i].prefix;
> + }
> +
> + if (notmuch->user_prefix)
> + return _notmuch_string_map_get (notmuch->user_prefix, name);
> +
> + return NULL;
> +}
> +
> +static void
> +_setup_query_field_default (const prefix_t *prefix, notmuch_database_t *notmuch)
> +{
> + if (prefix->prefix)
> + notmuch->query_parser->add_prefix ("", prefix->prefix);
> + if (prefix->flags & NOTMUCH_FIELD_PROBABILISTIC)
> + notmuch->query_parser->add_prefix (prefix->name, prefix->prefix);
> + else
> + notmuch->query_parser->add_boolean_prefix (prefix->name, prefix->prefix);
> +}
> +
> +static void
> +_setup_query_field (const prefix_t *prefix, notmuch_database_t *notmuch)
> +{
> + if (prefix->flags & NOTMUCH_FIELD_PROCESSOR) {
> + Xapian::FieldProcessor *fp;
> +
> + if (STRNCMP_LITERAL (prefix->name, "date") == 0)
> + fp = (new DateFieldProcessor(NOTMUCH_VALUE_TIMESTAMP))->release ();
> + else if (STRNCMP_LITERAL(prefix->name, "query") == 0)
> + fp = (new QueryFieldProcessor (*notmuch->query_parser, notmuch))->release ();
> + else if (STRNCMP_LITERAL (prefix->name, "thread") == 0)
> + fp = (new ThreadFieldProcessor (*notmuch->query_parser, notmuch))->release ();
> + else
> + fp = (new RegexpFieldProcessor (prefix->name, prefix->flags,
> + *notmuch->query_parser, notmuch))->release ();
> +
> + /* we treat all field-processor fields as boolean in order to get the raw input */
> + if (prefix->prefix)
> + notmuch->query_parser->add_prefix ("", prefix->prefix);
> + notmuch->query_parser->add_boolean_prefix (prefix->name, fp);
> + } else {
> + _setup_query_field_default (prefix, notmuch);
> + }
> +}
> +
> +notmuch_status_t
> +_notmuch_database_setup_standard_query_fields (notmuch_database_t *notmuch)
> +{
> + for (unsigned int i = 0; i < ARRAY_SIZE (prefix_table); i++) {
> + const prefix_t *prefix = &prefix_table[i];
> + if (prefix->flags & NOTMUCH_FIELD_EXTERNAL) {
> + _setup_query_field (prefix, notmuch);
> + }
> + }
> + return NOTMUCH_STATUS_SUCCESS;
> +}
> +
> +notmuch_status_t
> +_notmuch_database_setup_user_query_fields (notmuch_database_t *notmuch)
> +{
> + notmuch_config_list_t *list;
> + notmuch_status_t status;
> +
> + notmuch->user_prefix = _notmuch_string_map_create (notmuch);
> + if (notmuch->user_prefix == NULL)
> + return NOTMUCH_STATUS_OUT_OF_MEMORY;
> +
> + notmuch->user_header = _notmuch_string_map_create (notmuch);
> + if (notmuch->user_header == NULL)
> + return NOTMUCH_STATUS_OUT_OF_MEMORY;
> +
> + status = notmuch_database_get_config_list (notmuch, CONFIG_HEADER_PREFIX, &list);
> + if (status)
> + return status;
> +
> + for (; notmuch_config_list_valid (list); notmuch_config_list_move_to_next (list)) {
> +
> + prefix_t query_field;
> +
> + const char *key = notmuch_config_list_key (list)
> + + sizeof (CONFIG_HEADER_PREFIX) - 1;
> +
> + _notmuch_string_map_append (notmuch->user_prefix,
> + key,
> + _user_prefix (notmuch, key));
> +
> + _notmuch_string_map_append (notmuch->user_header,
> + key,
> + notmuch_config_list_value (list));
> +
> + query_field.name = talloc_strdup (notmuch, key);
> + query_field.prefix = _user_prefix (notmuch, key);
> + query_field.flags = NOTMUCH_FIELD_PROBABILISTIC
> + | NOTMUCH_FIELD_EXTERNAL;
> +
> + _setup_query_field_default (&query_field, notmuch);
> + }
> +
> + notmuch_config_list_destroy (list);
> +
> + return NOTMUCH_STATUS_SUCCESS;
> +}
> --
> 2.29.2
> _______________________________________________
> notmuch mailing list -- notmuch@notmuchmail.org
> To unsubscribe send an email to notmuch-leave@notmuchmail.org
next prev parent reply other threads:[~2020-12-20 15:37 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-20 12:10 v2 preliminaries for merged config David Bremner
2020-12-20 12:10 ` [PATCH 1/6] test: use keys with group 'test' in T590-libconfig David Bremner
2020-12-20 12:10 ` [PATCH 2/6] lib: factor out feature name related code David Bremner
2020-12-20 12:10 ` [PATCH 3/6] lib: factor out prefix related code to its own file David Bremner
2020-12-20 15:36 ` Tomi Ollila [this message]
2020-12-20 20:03 ` David Bremner
2020-12-20 12:10 ` [PATCH 4/6] lib/config: delay setting talloc destructor David Bremner
2020-12-20 12:10 ` [PATCH 5/6] test: add regression test for searching with alternate config David Bremner
2020-12-20 12:10 ` [PATCH 6/6] lib: factor out notmuch_database_open* related code to own file David Bremner
2020-12-23 23:50 ` v2 preliminaries for merged config David Bremner
-- strict thread matches above, loose matches on Subject: below --
2020-08-12 22:49 David Bremner
2020-08-12 22:49 ` [PATCH 3/6] lib: factor out prefix related code to its own file David Bremner
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