main(): Detect and report speech_new() errors

1 files changed, 36 insertions, 1 deletions

diff --git a/src/main.c b/src/main.c
index b35d079..3963e88 100644
--- a/src/main.c
+++ b/src/main.c
@@ -19,16 +19,51 @@
  * along with Timeteller.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
 #include "speech.h"
 
+static const char *program_name;
+
+static void
+set_program_name(const char *name)
+{
+	assert(name && *name);
+
+	program_name = name;
+}
+
+static void
+error(const char *format, ...)
+{
+	va_list ap;
+
+	assert(format);
+
+	fprintf(stderr, "%s: Error: ", program_name);
+	va_start(ap, format);
+	vfprintf(stderr, format, ap);
+	va_end(ap);
+	fputs("\n", stderr);
+}
+
 int
 main(int argc, char **argv)
 {
 	struct speech *speech;
 
+	set_program_name(argv[0]);
+
 	speech = speech_new();
+	if (speech == NULL) {
+		error("Failed to initialize speech synthesis engine");
+		return EXIT_FAILURE;
+	}
 	speech_play_time(speech);
 	speech_destroy(&speech);
 
-	return 0;
+	return EXIT_SUCCESS;
 }