parse-event: Add way to just test a filter string

If pevent->test_filters is set when a filter string is added,
then it will print the filters strings that were created and exit.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

2 files changed, 12 insertions, 0 deletions

diff --git a/parse-events.h b/parse-events.h
index 43213d4..3a4ef08 100644
--- a/parse-events.h
+++ b/parse-events.h
@@ -332,6 +332,8 @@ struct pevent {
 
         int print_raw;
 
+        int test_filters;
+
         struct format_field *bprint_ip_field;
         struct format_field *bprint_fmt_field;
         struct format_field *bprint_buf_field;
diff --git a/parse-filter.c b/parse-filter.c
index bd52033..d84a22b 100644
--- a/parse-filter.c
+++ b/parse-filter.c
@@ -1252,10 +1252,20 @@ int pevent_filter_add_filter_str(struct event_filter *filter,
                 /* Failures are returned if a parse error happened */
                 if (ret < 0)
                         rtn = ret;
+
+                if (ret >= 0 && pevent->test_filters) {
+                        char *test;
+                        test = pevent_filter_make_string(filter, event->event->id);
+                        printf(" '%s: %s'\n", event->event->name, test);
+                        free(test);
+                }
         }
 
         free_events(events);
 
+        if (rtn >= 0 && pevent->test_filters)
+                exit(0);
+
         return rtn;
 }