1 files changed, 77 insertions, 0 deletions
diff --git a/utils.c b/utils.c
new file mode 100644
index 0000000..084d795
--- /dev/null
+++ b/utils.c
@@ -0,0 +1,77 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "utils.h"
+
+static void
+info_va (const char *msg, va_list va)
+{
+  fprintf (stderr, "%s: ", progname);
+  vfprintf (stderr, msg, va);
+  fputs ("", stderr);
+}
+
+void
+info (const char *msg, ...)
+{
+  va_list ap;
+
+  va_start (ap, msg);
+  info_va (msg, ap);
+  va_end (ap);
+}
+
+static void
+warning_va (const char *msg, va_list va)
+{
+  fprintf (stderr, "%s: WARNING: ", progname);
+  vfprintf (stderr, msg, va);
+  if (errno)
+    {
+      fprintf (stderr, ": %s", strerror (errno));
+    }
+  fputs ("", stderr);
+}
+
+void
+warning (const char *msg, ...)
+{
+  va_list ap;
+
+  va_start (ap, msg);
+  warning_va (msg, ap);
+  va_end (ap);
+}
+
+static void
+fatal_va (const char *msg, va_list va)
+{
+  fprintf (stderr, "%s: FATAL: ", progname);
+  vfprintf (stderr, msg, va);
+  if (errno)
+    {
+      fprintf (stderr, ": %s", strerror (errno));
+    }
+  fputs ("", stderr);
+}
+
+void
+fatal (const char *msg, ...)
+{
+  va_list ap;
+
+  va_start (ap, msg);
+  fatal_va (msg, ap);
+  va_end (ap);
+  exit (EXIT_FAILURE);
+}