Initial Commit - Copy from Altus Metrum AltOS

ao-tools/ao-sky-flash/sky_debug.c

@@ -0,0 +1,112 @@
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * This program 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.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <stdint.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/time.h>
+#include "sky_flash.h"
+
+static int	dbg_input;
+static int	dbg_newline = 1;
+
+int
+skytraq_millis(void)
+{
+	struct timeval	tv;
+	gettimeofday(&tv, NULL);
+	return tv.tv_sec * 1000 + tv.tv_usec / 1000;
+}
+
+static void
+skytraq_dbg_time(void)
+{
+	int	delta = skytraq_millis() - skytraq_open_time;
+
+	if (!skytraq_verbose)
+		return;
+	printf ("%4d.%03d ", delta / 1000, delta % 1000);
+}
+
+void
+skytraq_dbg_newline(void)
+{
+	if (!skytraq_verbose)
+		return;
+	if (!dbg_newline) {
+		putchar('\n');
+		dbg_newline = 1;
+	}
+}
+
+static void
+skytraq_dbg_set(int input)
+{
+	if (!skytraq_verbose)
+		return;
+	if (input != dbg_input) {
+		skytraq_dbg_newline();
+		if (input)
+			putchar('\t');
+		dbg_input = input;
+	}
+}
+
+void
+skytraq_dbg_char(int input, char c)
+{
+	if (!skytraq_verbose)
+		return;
+	skytraq_dbg_set(input);
+	if (dbg_newline)
+		skytraq_dbg_time();
+	if (c < ' '  || c > '~')
+		printf ("\\%02x", (unsigned char) c);
+	else
+		putchar(c);
+	dbg_newline = 0;
+	if (c == '\n')
+		dbg_input = 2;
+	fflush(stdout);
+}
+
+void
+skytraq_dbg_buf(int input, const char *buf, int len)
+{
+	if (!skytraq_verbose)
+		return;
+	while (len--)
+		skytraq_dbg_char(input, *buf++);
+}
+
+void
+skytraq_dbg_printf(int input, const char *fmt, ...)
+{
+	va_list ap;
+
+	if (!skytraq_verbose)
+		return;
+	skytraq_dbg_set(input);
+	if (dbg_newline)
+		skytraq_dbg_time();
+	va_start (ap, fmt);
+	vprintf(fmt, ap);
+	va_end(ap);
+	dbg_newline = 0;
+}