1 files changed, 91 insertions, 0 deletions
diff --git a/update.c b/update.c
new file mode 100644
index 0000000..2686943
--- /dev/null
+++ b/update.c
@@ -0,0 +1,91 @@
+#include <assert.h>
+#include <err.h>
+#include <stdio.h>
+
+#include <libical/ical.h>
+
+#include "sqlite/sqlite3.h"
+
+static char *SCHEMA = "CREATE TABLE event ("
+		      "    start   TIMESTAMP,"
+		      "    end     TIMESTAMP,"
+		      "    summary TEXT"
+		      ")";
+
+static char *
+read_stream(char *s, size_t size, void *d)
+{
+	return fgets(s, (int)size, (FILE *)d);
+}
+
+static void
+component(sqlite3 *db, icalcomponent *c)
+{
+	struct icaltimetype dts = icalcomponent_get_dtstart(c);
+	struct icaltimetype dte = icalcomponent_get_dtend(c);
+
+	time_t start = icaltime_as_timet(dts);
+	time_t end = icaltime_as_timet(dte);
+	const char *summary = icalcomponent_get_summary(c);
+
+	sqlite3_stmt *stmt = NULL;
+	const char *sql = "INSERT INTO event (start, end, summary) VALUES ("
+			  "datetime(?, 'unixepoch'),"
+			  "datetime(?, 'unixepoch')"
+			  ", ?)";
+	if (sqlite3_prepare_v2(db, sql, -1, &stmt, NULL))
+		errx(1, "sqlite3_prepare_v2");
+
+	if (sqlite3_bind_int64(stmt, 1, start))
+		errx(1, "sqlite3_bind_int64");
+	if (sqlite3_bind_int64(stmt, 2, end))
+		errx(1, "sqlite3_bind_int64");
+	if (sqlite3_bind_text(stmt, 3, summary, -1, SQLITE_STATIC))
+		errx(1, "sqlite3_bind_text");
+	if (SQLITE_DONE != sqlite3_step(stmt))
+		errx(1, "sqlite3_step");
+}
+
+int
+main(int argc, const char *argv[static argc])
+{
+	if (2 != argc)
+		errx(1, "usage: %s dbfile < icalfile", argv[0]);
+
+	icalparser *parser = icalparser_new();
+	assert(parser);
+	FILE *stream = stdin;
+	assert(stream);
+	icalparser_set_gen_data(parser, stream);
+
+	sqlite3 *db;
+	char *errmsg = NULL;
+	if (sqlite3_open(argv[1], &db))
+		errx(1, "sqlite3_open: %s", errmsg);
+	if (sqlite3_exec(db, "BEGIN", NULL, NULL, &errmsg))
+		errx(1, "sqlite3_exec: %s", errmsg);
+	if (sqlite3_exec(db, "DROP TABLE IF EXISTS event", NULL, NULL, &errmsg))
+		errx(1, "sqlite3_exec: %s", errmsg);
+	if (sqlite3_exec(db, SCHEMA, NULL, NULL, &errmsg))
+		errx(1, "sqlite3_exec: %s", errmsg);
+	for (;;) {
+		char *line = icalparser_get_line(parser, read_stream);
+		if (!line)
+			break;
+		icalcomponent *c = icalparser_add_line(parser, line);
+		if (!c)
+			continue;
+		for (icalcompiter i = icalcomponent_begin_component(
+			 c, ICAL_VEVENT_COMPONENT);
+		     icalcompiter_deref(&i); icalcompiter_next(&i)) {
+			icalcomponent *ic = icalcompiter_deref(&i);
+			component(db, ic);
+		}
+		icalcomponent_free(c);
+	}
+	if (sqlite3_exec(db, "COMMIT", NULL, NULL, &errmsg))
+		errx(1, "sqlite3_exec: %s", errmsg);
+	sqlite3_close(db);
+
+	icalparser_free(parser);
+}