Trying very hard not to miss calendar events
First commit, basic C version working
Co-authored-by: Claude <noreply@anthropic.com>
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.clang-format
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.clang-format
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---
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BasedOnStyle: LLVM
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IndentWidth: 4
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ColumnLimit: 100
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BreakBeforeBraces: Linux
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AllowShortIfStatementsOnASingleLine: false
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AllowShortFunctionsOnASingleLine: None
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AllowShortLoopsOnASingleLine: false
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IndentCaseLabels: false
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PointerAlignment: Right
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SpaceAfterCStyleCast: true
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AlignConsecutiveAssignments: false
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AlignConsecutiveDeclarations: false
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.gitignore
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.gitignore
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# Created by https://www.toptal.com/developers/gitignore/api/c,ninja
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# Edit at https://www.toptal.com/developers/gitignore?templates=c,ninja
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### C ###
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# Prerequisites
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*.d
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# Object files
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*.o
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*.ko
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*.obj
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*.elf
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# Linker output
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*.ilk
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*.map
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*.exp
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# Precompiled Headers
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*.gch
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*.pch
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# Libraries
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*.lib
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*.a
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*.la
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*.lo
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# Shared objects (inc. Windows DLLs)
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*.dll
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*.so
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*.so.*
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*.dylib
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# Executables
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*.exe
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*.out
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*.app
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*.i*86
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*.x86_64
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*.hex
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# Debug files
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*.dSYM/
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*.su
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*.idb
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*.pdb
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# Kernel Module Compile Results
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*.mod*
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*.cmd
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.tmp_versions/
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modules.order
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Module.symvers
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Mkfile.old
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dkms.conf
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### Ninja ###
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.ninja_deps
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.ninja_log
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# End of https://www.toptal.com/developers/gitignore/api/c,ninja
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.vscode/
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build.ninja
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build.ninja
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rule cc
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command = gcc -c $cflags $in -o $out
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description = Compiling $in
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rule link
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command = gcc $in $ldflags -o $out
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description = Linking $out
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rule format
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command = clang-format -i $in
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description = Formatting $in
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cflags = -Wall -Wextra `pkg-config --cflags libedataserver-1.2 libecal-2.0 libsoup-3.0 glib-2.0`
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ldflags = `pkg-config --libs libedataserver-1.2 libecal-2.0 libsoup-3.0 glib-2.0`
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build list_events.o: cc list_events.c
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build list_events.out: link list_events.o
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build format: format list_events.c
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list_events.c
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list_events.c
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#include <glib.h>
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#include <libecal/libecal.h>
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#include <libedataserver/libedataserver.h>
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#include <libical-glib/libical-glib.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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void print_version()
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{
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printf("Evolution Data Server test program\n");
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printf("Library version info:\n");
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printf(" GLib version: %d.%d.%d\n", glib_major_version, glib_minor_version,
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glib_micro_version);
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}
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void print_usage(const char *program_name)
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{
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printf("Usage: %s [COMMAND]\n", program_name);
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printf("\nCommands:\n");
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printf(" --version Show version information\n");
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printf(" sources list List available calendar sources\n");
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printf(" events list List events from now to 30 days ahead\n");
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}
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int list_sources()
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{
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GError *error = NULL;
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ESourceRegistry *registry = e_source_registry_new_sync(NULL, &error);
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if (error) {
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fprintf(stderr, "Failed to create source registry: %s\n", error->message);
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g_error_free(error);
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return 1;
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}
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if (registry) {
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printf("Successfully connected to Evolution Data Server\n");
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// List available sources
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GList *sources = e_source_registry_list_sources(registry, E_SOURCE_EXTENSION_CALENDAR);
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printf("Found %d calendar source(s)\n", g_list_length(sources));
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for (GList *l = sources; l != NULL; l = l->next) {
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ESource *source = E_SOURCE(l->data);
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const char *display_name = e_source_get_display_name(source);
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const char *uid = e_source_get_uid(source);
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printf(" - %s (UID: %s)\n", display_name, uid);
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}
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g_list_free_full(sources, g_object_unref);
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g_object_unref(registry);
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}
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return 0;
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}
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int list_events()
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{
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GError *error = NULL;
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ESourceRegistry *registry = e_source_registry_new_sync(NULL, &error);
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if (error) {
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fprintf(stderr, "Failed to create source registry: %s\n", error->message);
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g_error_free(error);
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return 1;
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}
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// Calculate time range: now to 30 days ahead
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time_t now = time(NULL);
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time_t end_time = now + (60 * 24 * 60 * 60);
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// Get all calendar sources
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GList *sources = e_source_registry_list_sources(registry, E_SOURCE_EXTENSION_CALENDAR);
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int total_events = 0;
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for (GList *l = sources; l != NULL; l = l->next) {
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ESource *source = E_SOURCE(l->data);
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const char *display_name = e_source_get_display_name(source);
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// Create calendar client
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EClient *client_base =
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e_cal_client_connect_sync(source, E_CAL_CLIENT_SOURCE_TYPE_EVENTS, 30, NULL, &error);
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if (error) {
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fprintf(stderr, "Failed to connect to calendar '%s': %s\n", display_name,
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error->message);
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g_clear_error(&error);
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continue;
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}
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ECalClient *client = E_CAL_CLIENT(client_base);
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// Query for events in the time range
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char *iso_start = isodate_from_time_t(now);
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char *iso_end = isodate_from_time_t(end_time);
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char *query = g_strdup_printf(
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"(occur-in-time-range? (make-time \"%s\") (make-time \"%s\"))", iso_start, iso_end);
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GSList *ical_components = NULL;
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gboolean success =
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e_cal_client_get_object_list_sync(client, query, &ical_components, NULL, &error);
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if (error) {
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fprintf(stderr, "Failed to query events from '%s': %s\n", display_name, error->message);
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g_clear_error(&error);
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g_free(query);
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g_free(iso_start);
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g_free(iso_end);
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g_object_unref(client_base);
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continue;
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}
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if (success && ical_components) {
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for (GSList *comp = ical_components; comp != NULL; comp = comp->next) {
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ICalComponent *icalcomp = (ICalComponent *) comp->data;
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if (!icalcomp) {
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continue;
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}
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const char *summary = i_cal_component_get_summary(icalcomp);
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ICalTime *start = i_cal_component_get_dtstart(icalcomp);
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ICalTime *end = i_cal_component_get_dtend(icalcomp);
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time_t start_t = i_cal_time_as_timet(start);
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time_t end_t = i_cal_time_as_timet(end);
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char start_buf[64], end_buf[64];
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strftime(start_buf, sizeof(start_buf), "%Y-%m-%d %H:%M", localtime(&start_t));
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strftime(end_buf, sizeof(end_buf), "%Y-%m-%d %H:%M", localtime(&end_t));
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printf("[%s] %s | %s - %s\n", display_name, summary ? summary : "(No title)",
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start_buf, end_buf);
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total_events++;
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g_object_unref(start);
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g_object_unref(end);
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}
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g_slist_free_full(ical_components, g_object_unref);
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}
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g_free(query);
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g_free(iso_start);
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g_free(iso_end);
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g_object_unref(client_base);
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}
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printf("\nTotal events: %d\n", total_events);
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g_list_free_full(sources, g_object_unref);
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g_object_unref(registry);
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return 0;
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}
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int main(int argc, char *argv[])
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{
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if (argc < 2) {
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print_usage(argv[0]);
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return 1;
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}
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if (strcmp(argv[1], "--version") == 0) {
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print_version();
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return 0;
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}
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if (argc >= 3 && strcmp(argv[1], "sources") == 0 && strcmp(argv[2], "list") == 0) {
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return list_sources();
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}
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if (argc >= 3 && strcmp(argv[1], "events") == 0 && strcmp(argv[2], "list") == 0) {
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return list_events();
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}
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fprintf(stderr, "Unknown command\n\n");
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print_usage(argv[0]);
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return 1;
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}