log: let command "log_output" to set back its default

[openocd.git] / src / helper / log.c

diff --git a/src/helper/log.c b/src/helper/log.c
index 8f48b928b5640791b1fd757be7d1150bdb24a742..ae26df5a1cf7c3913141c9de16ec92aa23e1eee1 100644 (file)
--- a/src/helper/log.c
+++ b/src/helper/log.c
@@ -220,6 +220,15 @@ COMMAND_HANDLER(handle_debug_level_command)
 
 COMMAND_HANDLER(handle_log_output_command)
 {
+       if (CMD_ARGC == 0 || (CMD_ARGC == 1 && strcmp(CMD_ARGV[0], "default") == 0)) {
+               if (log_output != stderr && log_output != NULL) {
+                       /* Close previous log file, if it was open and wasn't stderr. */
+                       fclose(log_output);
+               }
+               log_output = stderr;
+               LOG_DEBUG("set log_output to default");
+               return ERROR_OK;
+       }
        if (CMD_ARGC == 1) {
                FILE *file = fopen(CMD_ARGV[0], "w");
                if (file == NULL) {
@@ -231,9 +240,11 @@ COMMAND_HANDLER(handle_log_output_command)
                        fclose(log_output);
                }
                log_output = file;
+               LOG_DEBUG("set log_output to \"%s\"", CMD_ARGV[0]);
+               return ERROR_OK;
        }
 
-       return ERROR_OK;
+       return ERROR_COMMAND_SYNTAX_ERROR;
 }
 
 static const struct command_registration log_command_handlers[] = {
@@ -242,7 +253,7 @@ static const struct command_registration log_command_handlers[] = {
                .handler = handle_log_output_command,
                .mode = COMMAND_ANY,
                .help = "redirect logging to a file (default: stderr)",
-               .usage = "file_name",
+               .usage = "[file_name | \"default\"]",
        },
        {
                .name = "debug_level",