- prepare OpenOCD for branching, created ./trunk/

git-svn-id: svn://svn.berlios.de/openocd/trunk@64 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/helper/log.c

@@ -0,0 +1,134 @@
+/***************************************************************************
+ *   Copyright (C) 2005 by Dominic Rath                                    *
+ *   Dominic.Rath@gmx.de                                                   *
+ *                                                                         *
+ *   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 "log.h"
+#include "configuration.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+
+int debug_level = -1;
+
+static FILE* log_output;
+
+static char *log_strings[4] = 
+{
+	"Error:  ",
+	"Warning:",
+	"Info:   ",
+	"Debug:  ",
+};
+
+void log_printf(enum log_levels level, const char *file, int line, const char *function, const char *format, ...)
+{
+	va_list args;
+	char buffer[512];
+
+	if (level > debug_level)
+		return;
+
+	va_start(args, format);
+	vsnprintf(buffer, 512, format, args);
+
+	fprintf(log_output, "%s %s:%d %s(): %s\n", log_strings[level], file, line, function, buffer);
+	fflush(log_output);
+	
+	va_end(args);
+}
+
+void short_log_printf(enum log_levels level, const char *format, ...)
+{
+	va_list args;
+	char buffer[512];
+
+	if (level > debug_level)
+		return;
+
+	va_start(args, format);
+	vsnprintf(buffer, 512, format, args);
+
+	fprintf(log_output, "%s %s\n", log_strings[level], buffer);
+	fflush(log_output);
+
+	va_end(args);
+}
+
+/* change the current debug level on the fly
+ * 0: only ERRORS
+ * 1: + WARNINGS
+ * 2: + INFORMATIONAL MSGS
+ * 3: + DEBUG MSGS
+ */
+int handle_debug_level_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+	if (argc == 0)
+		command_print(cmd_ctx, "debug_level: %i", debug_level);
+
+	if (argc > 0)
+		debug_level = strtoul(args[0], NULL, 0);
+
+	if (debug_level < 0)
+		debug_level = 0;
+
+	if (debug_level > 3)
+		debug_level = 3;
+
+	return ERROR_OK;
+}
+
+int handle_log_output_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+	if (argc == 1)
+	{
+		FILE* file = fopen(args[0], "w");
+		
+		if (file)
+		{
+			log_output = file;
+		}
+	}
+
+	return ERROR_OK;
+}
+
+int log_register_commands(struct command_context_s *cmd_ctx)
+{
+	register_command(cmd_ctx, NULL, "log_output", handle_log_output_command,
+		COMMAND_ANY, "redirect logging to <file> (default: stderr)");
+	register_command(cmd_ctx, NULL, "debug_level", handle_debug_level_command,
+		COMMAND_ANY, "adjust debug level <0-3>");
+
+	return ERROR_OK;
+}
+
+int log_init(struct command_context_s *cmd_ctx)
+{
+	/* set defaults for daemon configuration, if not set by cmdline or cfgfile */
+	if (debug_level == -1)
+		debug_level = LOG_INFO;
+	
+	if (log_output == NULL)
+	{
+		log_output = stderr;
+	}
+	
+	return ERROR_OK;
+}