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-rw-r--r--lib/debug.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/lib/debug.c b/lib/debug.c
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+++ b/lib/debug.c
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+/*
+ * debug.c: debugging messages
+ *
+ * Copyright (C) 2007 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+
+#include "attribute.h"
+
+#include "manconfig.h"
+
+#include "debug.h"
+
+bool debug_level = false;
+
+void init_debug (void)
+{
+ const char *man_debug = getenv ("MAN_DEBUG");
+ if (man_debug && STREQ (man_debug, "1"))
+ debug_level = true;
+}
+
+static void ATTRIBUTE_FORMAT ((__printf__, 1, 0)) vdebug (const char *message,
+ va_list args)
+{
+ if (debug_level)
+ vfprintf (stderr, message, args);
+}
+
+void debug (const char *message, ...)
+{
+ if (debug_level) {
+ va_list args;
+
+ va_start (args, message);
+ vdebug (message, args);
+ va_end (args);
+ }
+}
+
+void debug_error (const char *message, ...)
+{
+ if (debug_level) {
+ va_list args;
+
+ va_start (args, message);
+ vdebug (message, args);
+ va_end (args);
+
+ debug (": %s\n", strerror (errno));
+ }
+}