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-rw-r--r--calendar/pcs/query.c1261
1 files changed, 0 insertions, 1261 deletions
diff --git a/calendar/pcs/query.c b/calendar/pcs/query.c
deleted file mode 100644
index 94a998aa44..0000000000
--- a/calendar/pcs/query.c
+++ /dev/null
@@ -1,1261 +0,0 @@
-/* Evolution calendar - Live search query implementation
- *
- * Copyright (C) 2001 Ximian, Inc.
- *
- * Author: Federico Mena-Quintero <federico@ximian.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <string.h>
-#include <glib.h>
-#include <libgnome/gnome-defs.h>
-#include <libgnome/gnome-i18n.h>
-#include <gtk/gtksignal.h>
-#include <gal/widgets/e-unicode.h>
-#include <e-util/e-sexp.h>
-#include <cal-util/cal-recur.h>
-#include <cal-util/timeutil.h>
-#include "query.h"
-
-
-
-/* Private part of the Query structure */
-struct _QueryPrivate {
- /* The backend we are monitoring */
- CalBackend *backend;
-
- /* Listener to which we report changes in the live query */
- GNOME_Evolution_Calendar_QueryListener ql;
-
- /* Sexp that defines the query */
- char *sexp;
- ESExp *esexp;
-
- /* Idle handler ID for asynchronous queries */
- guint idle_id;
-
- /* List of UIDs that we still have to process */
- GList *pending_uids;
- int n_pending;
- int pending_total;
-
- /* Table of the UIDs we know do match the query */
- GHashTable *uids;
-
- /* The next component that will be handled in e_sexp_eval(); put here
- * just because the query object itself is the esexp context.
- */
- CalComponent *next_comp;
-};
-
-
-
-static void query_class_init (QueryClass *class);
-static void query_init (Query *query);
-static void query_destroy (GtkObject *object);
-
-static BonoboXObjectClass *parent_class;
-
-
-
-BONOBO_X_TYPE_FUNC_FULL (Query,
- GNOME_Evolution_Calendar_Query,
- BONOBO_X_OBJECT_TYPE,
- query);
-
-/* Class initialization function for the live search query */
-static void
-query_class_init (QueryClass *class)
-{
- GtkObjectClass *object_class;
-
- object_class = (GtkObjectClass *) class;
-
- parent_class = gtk_type_class (BONOBO_X_OBJECT_TYPE);
-
- object_class->destroy = query_destroy;
-
- /* The Query interface (ha ha! query interface!) has no methods, so we
- * don't need to fiddle with the epv.
- */
-}
-
-/* Object initialization function for the live search query */
-static void
-query_init (Query *query)
-{
- QueryPrivate *priv;
-
- priv = g_new0 (QueryPrivate, 1);
- query->priv = priv;
-
- priv->backend = NULL;
- priv->ql = CORBA_OBJECT_NIL;
- priv->sexp = NULL;
-
- priv->pending_uids = NULL;
- priv->uids = g_hash_table_new (g_str_hash, g_str_equal);
-
- priv->next_comp = NULL;
-}
-
-/* Used from g_hash_table_foreach(); frees a UID */
-static void
-free_uid_cb (gpointer key, gpointer value, gpointer data)
-{
- char *uid;
-
- uid = key;
- g_free (uid);
-}
-
-/* Destroy handler for the live search query */
-static void
-query_destroy (GtkObject *object)
-{
- Query *query;
- QueryPrivate *priv;
-
- g_return_if_fail (object != NULL);
- g_return_if_fail (IS_QUERY (object));
-
- query = QUERY (object);
- priv = query->priv;
-
- if (priv->backend) {
- gtk_signal_disconnect_by_data (GTK_OBJECT (priv->backend), query);
- gtk_object_unref (GTK_OBJECT (priv->backend));
- priv->backend = NULL;
- }
-
- if (priv->ql != CORBA_OBJECT_NIL) {
- CORBA_Environment ev;
-
- CORBA_exception_init (&ev);
- bonobo_object_release_unref (priv->ql, &ev);
-
- if (ev._major != CORBA_NO_EXCEPTION)
- g_message ("query_destroy(): Could not unref the listener\n");
-
- CORBA_exception_free (&ev);
-
- priv->ql = CORBA_OBJECT_NIL;
- }
-
- if (priv->sexp) {
- g_free (priv->sexp);
- priv->sexp = NULL;
- }
-
- if (priv->esexp) {
- e_sexp_unref (priv->esexp);
- priv->esexp = NULL;
- }
-
- if (priv->idle_id) {
- g_source_remove (priv->idle_id);
- priv->idle_id = 0;
- }
-
- if (priv->pending_uids) {
- GList *l;
-
- for (l = priv->pending_uids; l; l = l->next) {
- char *uid;
-
- uid = l->data;
- g_assert (uid != NULL);
- g_free (uid);
- }
-
- g_list_free (priv->pending_uids);
- priv->pending_uids = NULL;
- priv->n_pending = 0;
- }
-
- g_hash_table_foreach (priv->uids, free_uid_cb, NULL);
- g_hash_table_destroy (priv->uids);
- priv->uids = NULL;
-
- g_free (priv);
- query->priv = NULL;
-
- if (GTK_OBJECT_CLASS (parent_class)->destroy)
- (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
-}
-
-
-
-/* E-Sexp functions */
-
-/* (time-now)
- *
- * Returns a time_t of time (NULL).
- */
-static ESExpResult *
-func_time_now (ESExp *esexp, int argc, ESExpResult **argv, void *data)
-{
- ESExpResult *result;
-
- if (argc != 0) {
- e_sexp_fatal_error (esexp, _("time-now expects 0 arguments"));
- return NULL;
- }
-
- result = e_sexp_result_new (esexp, ESEXP_RES_TIME);
- result->value.time = time (NULL);
-
- return result;
-}
-
-/* (make-time ISODATE)
- *
- * ISODATE - string, ISO 8601 date/time representation
- *
- * Constructs a time_t value for the specified date.
- */
-static ESExpResult *
-func_make_time (ESExp *esexp, int argc, ESExpResult **argv, void *data)
-{
- const char *str;
- time_t t;
- ESExpResult *result;
-
- if (argc != 1) {
- e_sexp_fatal_error (esexp, _("make-time expects 1 argument"));
- return NULL;
- }
-
- if (argv[0]->type != ESEXP_RES_STRING) {
- e_sexp_fatal_error (esexp, _("make-time expects argument 1 "
- "to be a string"));
- return NULL;
- }
- str = argv[0]->value.string;
-
- t = time_from_isodate (str);
- if (t == -1) {
- e_sexp_fatal_error (esexp, _("make-time argument 1 must be an "
- "ISO 8601 date/time string"));
- return NULL;
- }
-
- result = e_sexp_result_new (esexp, ESEXP_RES_TIME);
- result->value.time = t;
-
- return result;
-}
-
-/* (time-add-day TIME N)
- *
- * TIME - time_t, base time
- * N - int, number of days to add
- *
- * Adds the specified number of days to a time value.
- *
- * FIXME: TIMEZONES - need to use a timezone or daylight saving changes will
- * make the result incorrect.
- */
-static ESExpResult *
-func_time_add_day (ESExp *esexp, int argc, ESExpResult **argv, void *data)
-{
- ESExpResult *result;
- time_t t;
- int n;
-
- if (argc != 2) {
- e_sexp_fatal_error (esexp, _("time-add-day expects 2 arguments"));
- return NULL;
- }
-
- if (argv[0]->type != ESEXP_RES_TIME) {
- e_sexp_fatal_error (esexp, _("time-add-day expects argument 1 "
- "to be a time_t"));
- return NULL;
- }
- t = argv[0]->value.time;
-
- if (argv[1]->type != ESEXP_RES_INT) {
- e_sexp_fatal_error (esexp, _("time-add-day expects argument 2 "
- "to be an integer"));
- return NULL;
- }
- n = argv[1]->value.number;
-
- result = e_sexp_result_new (esexp, ESEXP_RES_TIME);
- result->value.time = time_add_day (t, n);
-
- return result;
-}
-
-/* (time-day-begin TIME)
- *
- * TIME - time_t, base time
- *
- * Returns the start of the day, according to the local time.
- *
- * FIXME: TIMEZONES - this uses the current Unix timezone.
- */
-static ESExpResult *
-func_time_day_begin (ESExp *esexp, int argc, ESExpResult **argv, void *data)
-{
- time_t t;
- ESExpResult *result;
-
- if (argc != 1) {
- e_sexp_fatal_error (esexp, _("time-day-begin expects 1 argument"));
- return NULL;
- }
-
- if (argv[0]->type != ESEXP_RES_TIME) {
- e_sexp_fatal_error (esexp, _("time-day-begin expects argument 1 "
- "to be a time_t"));
- return NULL;
- }
- t = argv[0]->value.time;
-
- result = e_sexp_result_new (esexp, ESEXP_RES_TIME);
- result->value.time = time_day_begin (t);
-
- return result;
-}
-
-/* (time-day-end TIME)
- *
- * TIME - time_t, base time
- *
- * Returns the end of the day, according to the local time.
- *
- * FIXME: TIMEZONES - this uses the current Unix timezone.
- */
-static ESExpResult *
-func_time_day_end (ESExp *esexp, int argc, ESExpResult **argv, void *data)
-{
- time_t t;
- ESExpResult *result;
-
- if (argc != 1) {
- e_sexp_fatal_error (esexp, _("time-day-end expects 1 argument"));
- return NULL;
- }
-
- if (argv[0]->type != ESEXP_RES_TIME) {
- e_sexp_fatal_error (esexp, _("time-day-end expects argument 1 "
- "to be a time_t"));
- return NULL;
- }
- t = argv[0]->value.time;
-
- result = e_sexp_result_new (esexp, ESEXP_RES_TIME);
- result->value.time = time_day_end (t);
-
- return result;
-}
-
-/* (get-vtype)
- *
- * Returns a string indicating the type of component (VEVENT, VTODO, VJOURNAL,
- * VFREEBUSY, VTIMEZONE, UNKNOWN).
- */
-static ESExpResult *
-func_get_vtype (ESExp *esexp, int argc, ESExpResult **argv, void *data)
-{
- Query *query;
- QueryPrivate *priv;
- CalComponent *comp;
- CalComponentVType vtype;
- char *str;
- ESExpResult *result;
-
- query = QUERY (data);
- priv = query->priv;
-
- g_assert (priv->next_comp != NULL);
- comp = priv->next_comp;
-
- /* Check argument types */
-
- if (argc != 0) {
- e_sexp_fatal_error (esexp, _("get-vtype expects 0 arguments"));
- return NULL;
- }
-
- /* Get the type */
-
- vtype = cal_component_get_vtype (comp);
-
- switch (vtype) {
- case CAL_COMPONENT_EVENT:
- str = g_strdup ("VEVENT");
- break;
-
- case CAL_COMPONENT_TODO:
- str = g_strdup ("VTODO");
- break;
-
- case CAL_COMPONENT_JOURNAL:
- str = g_strdup ("VJOURNAL");
- break;
-
- case CAL_COMPONENT_FREEBUSY:
- str = g_strdup ("VFREEBUSY");
- break;
-
- case CAL_COMPONENT_TIMEZONE:
- str = g_strdup ("VTIMEZONE");
- break;
-
- default:
- str = g_strdup ("UNKNOWN");
- break;
- }
-
- result = e_sexp_result_new (esexp, ESEXP_RES_STRING);
- result->value.string = str;
-
- return result;
-}
-
-/* Sets a boolean value in the data to TRUE; called from
- * cal_recur_generate_instances() to indicate that at least one instance occurs
- * in the sought time range. We always return FALSE because we want the
- * recurrence engine to finish as soon as possible.
- */
-static gboolean
-instance_occur_cb (CalComponent *comp, time_t start, time_t end, gpointer data)
-{
- gboolean *occurs;
-
- occurs = data;
- *occurs = TRUE;
-
- return FALSE;
-}
-
-/* Call the backend function to get a timezone from a TZID. */
-static icaltimezone*
-resolve_tzid (const char *tzid, gpointer data)
-{
- Query *query = data;
-
- if (!tzid || !tzid[0])
- return NULL;
- else
- return cal_backend_get_timezone (query->priv->backend, tzid);
-}
-
-
-/* (occur-in-time-range? START END)
- *
- * START - time_t, start of the time range
- * END - time_t, end of the time range
- *
- * Returns a boolean indicating whether the component has any occurrences in the
- * specified time range.
- */
-static ESExpResult *
-func_occur_in_time_range (ESExp *esexp, int argc, ESExpResult **argv, void *data)
-{
- Query *query;
- QueryPrivate *priv;
- CalComponent *comp;
- time_t start, end;
- gboolean occurs;
- ESExpResult *result;
-
- query = QUERY (data);
- priv = query->priv;
-
- g_assert (priv->next_comp != NULL);
- comp = priv->next_comp;
-
- /* Check argument types */
-
- if (argc != 2) {
- e_sexp_fatal_error (esexp, _("occur-in-time-range? expects 2 arguments"));
- return NULL;
- }
-
- if (argv[0]->type != ESEXP_RES_TIME) {
- e_sexp_fatal_error (esexp, _("occur-in-time-range? expects argument 1 "
- "to be a time_t"));
- return NULL;
- }
- start = argv[0]->value.time;
-
- if (argv[1]->type != ESEXP_RES_TIME) {
- e_sexp_fatal_error (esexp, _("occur-in-time-range? expects argument 2 "
- "to be a time_t"));
- return NULL;
- }
- end = argv[1]->value.time;
-
- /* See if there is at least one instance in that range */
-
- occurs = FALSE;
-
- cal_recur_generate_instances (comp, start, end,
- instance_occur_cb, &occurs,
- resolve_tzid, query);
-
- result = e_sexp_result_new (esexp, ESEXP_RES_BOOL);
- result->value.bool = occurs;
-
- return result;
-}
-
-/* Returns whether a list of CalComponentText items matches the specified string */
-static gboolean
-matches_text_list (GSList *text_list, const char *str)
-{
- GSList *l;
- gboolean matches;
-
- matches = FALSE;
-
- for (l = text_list; l; l = l->next) {
- CalComponentText *text;
-
- text = l->data;
- g_assert (text->value != NULL);
-
- if (e_utf8_strstrcasedecomp (text->value, str) != NULL) {
- matches = TRUE;
- break;
- }
- }
-
- return matches;
-}
-
-/* Returns whether the comments in a component matches the specified string */
-static gboolean
-matches_comment (CalComponent *comp, const char *str)
-{
- GSList *list;
- gboolean matches;
-
- cal_component_get_comment_list (comp, &list);
- matches = matches_text_list (list, str);
- cal_component_free_text_list (list);
-
- return matches;
-}
-
-/* Returns whether the description in a component matches the specified string */
-static gboolean
-matches_description (CalComponent *comp, const char *str)
-{
- GSList *list;
- gboolean matches;
-
- cal_component_get_description_list (comp, &list);
- matches = matches_text_list (list, str);
- cal_component_free_text_list (list);
-
- return matches;
-}
-
-/* Returns whether the summary in a component matches the specified string */
-static gboolean
-matches_summary (CalComponent *comp, const char *str)
-{
- CalComponentText text;
-
- cal_component_get_summary (comp, &text);
-
- if (!text.value)
- return FALSE;
-
- return e_utf8_strstrcasedecomp (text.value, str) != NULL;
-}
-
-/* Returns whether any text field in a component matches the specified string */
-static gboolean
-matches_any (CalComponent *comp, const char *str)
-{
- /* As an optimization, and to make life easier for the individual
- * predicate functions, see if we are looking for the empty string right
- * away.
- */
- if (strlen (str) == 0)
- return TRUE;
-
- return (matches_comment (comp, str)
- || matches_description (comp, str)
- || matches_summary (comp, str));
-}
-
-/* (contains? FIELD STR)
- *
- * FIELD - string, name of field to match (any, comment, description, summary)
- * STR - string, match string
- *
- * Returns a boolean indicating whether the specified field contains the
- * specified string.
- */
-static ESExpResult *
-func_contains (ESExp *esexp, int argc, ESExpResult **argv, void *data)
-{
- Query *query;
- QueryPrivate *priv;
- CalComponent *comp;
- const char *field;
- const char *str;
- gboolean matches;
- ESExpResult *result;
-
- query = QUERY (data);
- priv = query->priv;
-
- g_assert (priv->next_comp != NULL);
- comp = priv->next_comp;
-
- /* Check argument types */
-
- if (argc != 2) {
- e_sexp_fatal_error (esexp, _("contains? expects 2 arguments"));
- return NULL;
- }
-
- if (argv[0]->type != ESEXP_RES_STRING) {
- e_sexp_fatal_error (esexp, _("contains? expects argument 1 "
- "to be a string"));
- return NULL;
- }
- field = argv[0]->value.string;
-
- if (argv[1]->type != ESEXP_RES_STRING) {
- e_sexp_fatal_error (esexp, _("contains? expects argument 2 "
- "to be a string"));
- return NULL;
- }
- str = argv[1]->value.string;
-
- /* See if it matches */
-
- if (strcmp (field, "any") == 0)
- matches = matches_any (comp, str);
- else if (strcmp (field, "comment") == 0)
- matches = matches_comment (comp, str);
- else if (strcmp (field, "description") == 0)
- matches = matches_description (comp, str);
- else if (strcmp (field, "summary") == 0)
- matches = matches_summary (comp, str);
- else {
- e_sexp_fatal_error (esexp, _("contains? expects argument 1 to "
- "be one of \"any\", \"summary\", \"description\""));
- return NULL;
- }
-
- result = e_sexp_result_new (esexp, ESEXP_RES_BOOL);
- result->value.bool = matches;
-
- return result;
-}
-
-/* (has-categories? STR+)
- * (has-categories? #f)
- *
- * STR - At least one string specifying a category
- * Or you can specify a single #f (boolean false) value for components
- * that have no categories assigned to them ("unfiled").
- *
- * Returns a boolean indicating whether the component has all the specified
- * categories.
- */
-static ESExpResult *
-func_has_categories (ESExp *esexp, int argc, ESExpResult **argv, void *data)
-{
- Query *query;
- QueryPrivate *priv;
- CalComponent *comp;
- gboolean unfiled;
- int i;
- GSList *categories;
- gboolean matches;
- ESExpResult *result;
-
- query = QUERY (data);
- priv = query->priv;
-
- g_assert (priv->next_comp != NULL);
- comp = priv->next_comp;
-
- /* Check argument types */
-
- if (argc < 1) {
- e_sexp_fatal_error (esexp, _("has-categories? expects at least 1 argument"));
- return NULL;
- }
-
- if (argc == 1 && argv[0]->type == ESEXP_RES_BOOL)
- unfiled = TRUE;
- else
- unfiled = FALSE;
-
- if (!unfiled)
- for (i = 0; i < argc; i++)
- if (argv[i]->type != ESEXP_RES_STRING) {
- e_sexp_fatal_error (esexp, _("has-categories? expects all arguments "
- "to be strings or one and only one "
- "argument to be a boolean false (#f)"));
- return NULL;
- }
-
- /* Search categories. First, if there are no categories we return
- * whether unfiled components are supposed to match.
- */
-
- cal_component_get_categories_list (comp, &categories);
- if (!categories) {
- result = e_sexp_result_new (esexp, ESEXP_RES_BOOL);
- result->value.bool = unfiled;
-
- return result;
- }
-
- /* Otherwise, we *do* have categories but unfiled components were
- * requested, so this component does not match.
- */
- if (unfiled) {
- result = e_sexp_result_new (esexp, ESEXP_RES_BOOL);
- result->value.bool = FALSE;
-
- return result;
- }
-
- matches = TRUE;
-
- for (i = 0; i < argc; i++) {
- const char *sought;
- GSList *l;
- gboolean has_category;
-
- sought = argv[i]->value.string;
-
- has_category = FALSE;
-
- for (l = categories; l; l = l->next) {
- const char *category;
-
- category = l->data;
-
- if (strcmp (category, sought) == 0) {
- has_category = TRUE;
- break;
- }
- }
-
- if (!has_category) {
- matches = FALSE;
- break;
- }
- }
-
- cal_component_free_categories_list (categories);
-
- result = e_sexp_result_new (esexp, ESEXP_RES_BOOL);
- result->value.bool = matches;
-
- return result;
-}
-
-
-
-/* Adds a component to our the UIDs hash table and notifies the client */
-static void
-add_component (Query *query, const char *uid, gboolean query_in_progress, int n_scanned, int total)
-{
- QueryPrivate *priv;
- char *old_uid;
- CORBA_Environment ev;
-
- if (query_in_progress)
- g_assert (n_scanned > 0 || n_scanned <= total);
-
- priv = query->priv;
-
- if (g_hash_table_lookup_extended (priv->uids, uid, (gpointer *) &old_uid, NULL)) {
- g_hash_table_remove (priv->uids, old_uid);
- g_free (old_uid);
- }
-
- g_hash_table_insert (priv->uids, g_strdup (uid), NULL);
-
- CORBA_exception_init (&ev);
- GNOME_Evolution_Calendar_QueryListener_notifyObjUpdated (
- priv->ql,
- (char *) uid,
- query_in_progress,
- n_scanned,
- total,
- &ev);
-
- if (ev._major != CORBA_NO_EXCEPTION)
- g_message ("add_component(): Could not notify the listener of an "
- "updated component");
-
- CORBA_exception_free (&ev);
-}
-
-/* Removes a component from our the UIDs hash table and notifies the client */
-static void
-remove_component (Query *query, const char *uid)
-{
- QueryPrivate *priv;
- char *old_uid;
- CORBA_Environment ev;
-
- priv = query->priv;
-
- if (!g_hash_table_lookup_extended (priv->uids, uid, (gpointer *) &old_uid, NULL))
- return;
-
- /* The component did match the query before but it no longer does, so we
- * have to notify the client.
- */
-
- g_hash_table_remove (priv->uids, old_uid);
- g_free (old_uid);
-
- CORBA_exception_init (&ev);
- GNOME_Evolution_Calendar_QueryListener_notifyObjRemoved (
- priv->ql,
- (char *) uid,
- &ev);
-
- if (ev._major != CORBA_NO_EXCEPTION)
- g_message ("remove_component(): Could not notify the listener of a "
- "removed component");
-
- CORBA_exception_free (&ev);
-}
-
-/* Removes a component from the list of pending UIDs */
-static void
-remove_from_pending (Query *query, const char *remove_uid)
-{
- QueryPrivate *priv;
- GList *l;
-
- priv = query->priv;
-
- for (l = priv->pending_uids; l; l = l->next) {
- char *uid;
-
- g_assert (priv->n_pending > 0);
-
- uid = l->data;
- if (strcmp (remove_uid, uid))
- continue;
-
- g_free (uid);
-
- priv->pending_uids = g_list_remove_link (priv->pending_uids, l);
- g_list_free_1 (l);
- priv->n_pending--;
-
- g_assert ((priv->pending_uids && priv->n_pending != 0)
- || (!priv->pending_uids && priv->n_pending == 0));
-
- break;
- }
-}
-
-static struct {
- char *name;
- ESExpFunc *func;
-} functions[] = {
- /* Time-related functions */
- { "time-now", func_time_now },
- { "make-time", func_make_time },
- { "time-add-day", func_time_add_day },
- { "time-day-begin", func_time_day_begin },
- { "time-day-end", func_time_day_end },
-
- /* Component-related functions */
- { "get-vtype", func_get_vtype },
- { "occur-in-time-range?", func_occur_in_time_range },
- { "contains?", func_contains },
- { "has-categories?", func_has_categories }
-};
-
-/* Initializes a sexp by interning our own symbols */
-static ESExp *
-create_sexp (Query *query)
-{
- ESExp *esexp;
- int i;
-
- esexp = e_sexp_new ();
-
- for (i = 0; i < (sizeof (functions) / sizeof (functions[0])); i++)
- e_sexp_add_function (esexp, 0, functions[i].name, functions[i].func, query);
-
- return esexp;
-}
-
-/* Evaluates the query sexp on the specified component and notifies the listener
- * as appropriate.
- */
-static void
-match_component (Query *query, const char *uid,
- gboolean query_in_progress, int n_scanned, int total)
-{
- QueryPrivate *priv;
- char *comp_str;
- CalComponent *comp;
- icalcomponent *icalcomp;
- gboolean set_succeeded;
- ESExpResult *result;
-
- priv = query->priv;
-
- comp_str = cal_backend_get_object (priv->backend, uid);
- g_assert (comp_str != NULL);
-
- icalcomp = icalparser_parse_string (comp_str);
- g_assert (icalcomp != NULL);
-
- g_free (comp_str);
-
- comp = cal_component_new ();
- set_succeeded = cal_component_set_icalcomponent (comp, icalcomp);
- g_assert (set_succeeded);
-
- /* Eval the sexp */
-
- g_assert (priv->next_comp == NULL);
-
- priv->next_comp = comp;
- result = e_sexp_eval (priv->esexp);
- gtk_object_unref (GTK_OBJECT (comp));
- priv->next_comp = NULL;
-
- if (!result) {
- const char *error_str;
- CORBA_Environment ev;
-
- error_str = e_sexp_error (priv->esexp);
- g_assert (error_str != NULL);
-
- CORBA_exception_init (&ev);
- GNOME_Evolution_Calendar_QueryListener_notifyEvalError (
- priv->ql,
- error_str,
- &ev);
-
- if (ev._major != CORBA_NO_EXCEPTION)
- g_message ("match_component(): Could not notify the listener of "
- "an evaluation error");
-
- CORBA_exception_free (&ev);
- return;
- } else if (result->type != ESEXP_RES_BOOL) {
- CORBA_Environment ev;
-
- CORBA_exception_init (&ev);
- GNOME_Evolution_Calendar_QueryListener_notifyEvalError (
- priv->ql,
- _("Evaluation of the search expression did not yield a boolean value"),
- &ev);
-
- if (ev._major != CORBA_NO_EXCEPTION)
- g_message ("match_component(): Could not notify the listener of "
- "an unexpected result value type when evaluating the "
- "search expression");
-
- CORBA_exception_free (&ev);
- } else {
- /* Success; process the component accordingly */
-
- if (result->value.bool)
- add_component (query, uid, query_in_progress, n_scanned, total);
- else
- remove_component (query, uid);
- }
-
- e_sexp_result_free (priv->esexp, result);
-}
-
-/* Processes a single component that is queued in the list */
-static gboolean
-process_component_cb (gpointer data)
-{
- Query *query;
- QueryPrivate *priv;
- char *uid;
- GList *l;
-
- query = QUERY (data);
- priv = query->priv;
-
- /* No more components? */
-
- if (!priv->pending_uids) {
- g_assert (priv->n_pending == 0);
-
- priv->idle_id = 0;
- return FALSE;
- }
-
- g_assert (priv->n_pending > 0);
-
- /* Fetch the component */
-
- l = priv->pending_uids;
- priv->pending_uids = g_list_remove_link (priv->pending_uids, l);
- priv->n_pending--;
-
- g_assert ((priv->pending_uids && priv->n_pending != 0)
- || (!priv->pending_uids && priv->n_pending == 0));
-
- uid = l->data;
- g_assert (uid != NULL);
-
- g_list_free_1 (l);
-
- bonobo_object_ref (BONOBO_OBJECT (query));
-
- match_component (query, uid,
- TRUE,
- priv->pending_total - priv->n_pending,
- priv->pending_total);
-
- bonobo_object_unref (BONOBO_OBJECT (query));
-
- g_free (uid);
-
- return TRUE;
-}
-
-/* Populates the query with pending UIDs so that they can be processed
- * asynchronously.
- */
-static void
-populate_query (Query *query)
-{
- QueryPrivate *priv;
-
- priv = query->priv;
- g_assert (priv->idle_id == 0);
-
- priv->pending_uids = cal_backend_get_uids (priv->backend, CALOBJ_TYPE_ANY);
- priv->pending_total = g_list_length (priv->pending_uids);
- priv->n_pending = priv->pending_total;
-
- priv->idle_id = g_idle_add (process_component_cb, query);
-}
-
-/* Idle handler for starting a query */
-static gboolean
-start_query_cb (gpointer data)
-{
- Query *query;
- QueryPrivate *priv;
- CORBA_Environment ev;
-
- query = QUERY (data);
- priv = query->priv;
-
- priv->idle_id = 0;
-
- priv->esexp = create_sexp (query);
-
- /* Compile the query string */
-
- g_assert (priv->sexp != NULL);
- e_sexp_input_text (priv->esexp, priv->sexp, strlen (priv->sexp));
-
- if (e_sexp_parse (priv->esexp) == -1) {
- const char *error_str;
-
- error_str = e_sexp_error (priv->esexp);
- g_assert (error_str != NULL);
-
- CORBA_exception_init (&ev);
- GNOME_Evolution_Calendar_QueryListener_notifyQueryDone (
- priv->ql,
- GNOME_Evolution_Calendar_QueryListener_PARSE_ERROR,
- error_str,
- &ev);
-
- if (ev._major != CORBA_NO_EXCEPTION)
- g_message ("start_query_cb(): Could not notify the listener of "
- "a parse error");
-
- CORBA_exception_free (&ev);
- return FALSE;
- }
-
- /* Populate the query with UIDs so that we can process them asynchronously */
-
- populate_query (query);
-
- return FALSE;
-}
-
-/* Callback used when the backend gets loaded; we just queue the query to be
- * started later.
- */
-static void
-backend_opened_cb (CalBackend *backend, CalBackendOpenStatus status, gpointer data)
-{
- Query *query;
- QueryPrivate *priv;
-
- query = QUERY (data);
- priv = query->priv;
-
- if (status == CAL_BACKEND_OPEN_SUCCESS) {
- g_assert (cal_backend_is_loaded (backend));
- g_assert (priv->idle_id == 0);
-
- priv->idle_id = g_idle_add (start_query_cb, query);
- }
-}
-
-/* Callback used when a component changes in the backend */
-static void
-backend_obj_updated_cb (CalBackend *backend, const char *uid, gpointer data)
-{
- Query *query;
-
- query = QUERY (data);
-
- bonobo_object_ref (BONOBO_OBJECT (query));
-
- match_component (query, uid, FALSE, 0, 0);
- remove_from_pending (query, uid);
-
- bonobo_object_unref (BONOBO_OBJECT (query));
-}
-
-/* Callback used when a component is removed from the backend */
-static void
-backend_obj_removed_cb (CalBackend *backend, const char *uid, gpointer data)
-{
- Query *query;
- QueryPrivate *priv;
-
- query = QUERY (data);
- priv = query->priv;
-
- bonobo_object_ref (BONOBO_OBJECT (query));
-
- remove_component (query, uid);
- remove_from_pending (query, uid);
-
- bonobo_object_unref (BONOBO_OBJECT (query));
-}
-
-/**
- * query_construct:
- * @query: A live search query.
- * @backend: Calendar backend that the query object will monitor.
- * @ql: Listener for query results.
- * @sexp: Sexp that defines the query.
- *
- * Constructs a #Query object by binding it to a calendar backend and a query
- * listener. The @query object will start to populate itself asynchronously and
- * call the listener as appropriate.
- *
- * Return value: The same value as @query, or NULL if the query could not
- * be constructed.
- **/
-Query *
-query_construct (Query *query,
- CalBackend *backend,
- GNOME_Evolution_Calendar_QueryListener ql,
- const char *sexp)
-{
- QueryPrivate *priv;
- CORBA_Environment ev;
-
- g_return_val_if_fail (query != NULL, NULL);
- g_return_val_if_fail (IS_QUERY (query), NULL);
- g_return_val_if_fail (backend != NULL, NULL);
- g_return_val_if_fail (IS_CAL_BACKEND (backend), NULL);
- g_return_val_if_fail (ql != CORBA_OBJECT_NIL, NULL);
- g_return_val_if_fail (sexp != NULL, NULL);
-
- priv = query->priv;
-
- CORBA_exception_init (&ev);
- priv->ql = CORBA_Object_duplicate (ql, &ev);
- if (ev._major != CORBA_NO_EXCEPTION) {
- g_message ("query_construct(): Could not duplicate the listener");
- priv->ql = CORBA_OBJECT_NIL;
- CORBA_exception_free (&ev);
- return NULL;
- }
- CORBA_exception_free (&ev);
-
- priv->backend = backend;
- gtk_object_ref (GTK_OBJECT (priv->backend));
-
- gtk_signal_connect (GTK_OBJECT (priv->backend), "obj_updated",
- GTK_SIGNAL_FUNC (backend_obj_updated_cb),
- query);
- gtk_signal_connect (GTK_OBJECT (priv->backend), "obj_removed",
- GTK_SIGNAL_FUNC (backend_obj_removed_cb),
- query);
-
- priv->sexp = g_strdup (sexp);
-
- /* Queue the query to be started asynchronously */
-
- if (cal_backend_is_loaded (priv->backend)) {
- g_assert (priv->idle_id == 0);
- priv->idle_id = g_idle_add (start_query_cb, query);
- } else
- gtk_signal_connect (GTK_OBJECT (priv->backend), "opened",
- GTK_SIGNAL_FUNC (backend_opened_cb),
- query);
-
- return query;
-}
-
-/**
- * query_new:
- * @backend: Calendar backend that the query object will monitor.
- * @ql: Listener for query results.
- * @sexp: Sexp that defines the query.
- *
- * Creates a new query engine object that monitors a calendar backend.
- *
- * Return value: A newly-created query object, or NULL on failure.
- **/
-Query *
-query_new (CalBackend *backend,
- GNOME_Evolution_Calendar_QueryListener ql,
- const char *sexp)
-{
- Query *query;
-
- query = QUERY (gtk_type_new (QUERY_TYPE));
- if (!query_construct (query, backend, ql, sexp)) {
- bonobo_object_unref (BONOBO_OBJECT (query));
- return NULL;
- }
-
- return query;
-}